Materiały źródłowe

• #1 Sudden Infant Death Syndrome – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560807/

  Sudden infant death syndrome (SIDS) is the abrupt and unexplained death of an infant less than 1-year old. Despite investigation (review of clinical history, investigation of the death, and a complete autopsy), no evidence supports a specific single cause of death. […] The exact etiology of SIDS is not clear. Studies suggest that SIDS is associated with suboptimal physiologic responses to hypoxemia and hypercarbia and a combination of several intrinsic and extrinsic factors. […] A generally accepted model is a triple-risk model: SIDS occurs in infants with underlying vulnerability who undergo a trigger event at a vulnerable developmental stage. […] Infants dying as a result of SIDS display suboptimal physiologic regulatory responses. Post-mortem examination of the brainstems of SIDS victims demonstrates abnormalities in serotonergic signaling abnormalities in the arcuate nucleus and tissues that modulate ventilation and blood pressure in response to hypoxia and hypercarbia.

• #2 Sudden Infant Death Syndrome: Beyond Risk Factors

  https://www.mdpi.com/2075-1729/11/3/184

  Sudden infant death syndrome (SIDS) is defined as “the sudden death of an infant under 1 year of age which remains unexplained after thorough investigation including a complete autopsy, death scene investigation, and detailed clinical and pathological review”. […] SIDS pathogenesis is associated with a multifactorial condition that comprehends genetic, environmental and sociocultural factors. […] The most recent evidence suggests that SIDS pathogenesis is a multifactorial condition that comprehends genetic, environmental and sociocultural factors. […] The combination of intrinsic and extrinsic factors which overlap during a period of respiratory, autonomic and cardiac development, usually occurring between two to four months of age, leads to a life-threatening event during a period of sleep.

• #3 Sudden infant death syndrome pathophysiology – wikidoc

  https://www.wikidoc.org/index.php/Sudden_infant_death_syndrome_pathophysiology

  The exact pathogenesis of Sudden infant death syndrome (SIDS) is not fully understood. It is thought that Sudden infant death syndrome (SIDS) may be caused by either genetic mutations, brainstem abnormality, airflow obstruction, maternal smoking, or infection. […] The exact pathogenesis of Sudden infant death syndrome (SIDS) is not completely understood. […] New evidence shows that brainstem anomalies which involves cardiorespiratory control in the midbrain is a significant player in developing Sudden infant death syndrome (SIDS). […] Abnormal 5-hydroxytryptamine [5-HT] which is also called serotonin signalling pathway is also implicated in the pathogenesis of developing Sudden infant death syndrome (SIDS). […] Alterations in the serotonin signalling pathway leads to disturbances in medulla which in turn results in disturbances in autonomic processes.

• #4 Sudden Infant Death Syndrome – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560807/

  Sudden infant death syndrome (SIDS) is the abrupt and unexplained death of an infant less than 1-year old. Despite investigation (review of clinical history, investigation of the death, and a complete autopsy), no evidence supports a specific single cause of death. […] The exact etiology of SIDS is not clear. Studies suggest that SIDS is associated with suboptimal physiologic responses to hypoxemia and hypercarbia and a combination of several intrinsic and extrinsic factors. […] A generally accepted model is a triple-risk model: SIDS occurs in infants with underlying vulnerability who undergo a trigger event at a vulnerable developmental stage. […] Infants dying as a result of SIDS display suboptimal physiologic regulatory responses. Post-mortem examination of the brainstems of SIDS victims demonstrates abnormalities in serotonergic signaling abnormalities in the arcuate nucleus and tissues that modulate ventilation and blood pressure in response to hypoxia and hypercarbia.

• #5 Sudden Infant Death Syndrome, Sleep, and the Physiology and Pathophysiology of the Respiratory Network – SIDS Sudden Infant and Early Childhood Death – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK513387/

  The identification of risk factors associated with sudden infant death syndrome (SIDS) has led to significant advances in the prevention of this tragic outcome. […] Unfortunately, SIDS still remains the number-one cause of death in infants under 1 year of age in many countries, despite epidemiological and pathological studies that continue to identify additional risk factors, such as hearing deficiencies, or various genetic alterations associated with SIDS. […] The Triple Risk hypothesis by Dr Hannah Kinney and collaborators can partly resolve this confusion. This hypothesis states that SIDS is caused by an incident in which not just one but three risk factors come together to bring an infant into a situation that leads to the sudden death. […] The awareness campaigns have shown that it is possible to significantly reduce the risk of an infant being exposed to exogenous stressors.

• #6 Sudden Infant Death Syndrome (SIDS/Cot Death)

  https://patient.info/doctor/sudden-infant-death-syndrome

  In this model, SIDS occurs when three factors are present simultaneously. These factors are: An underlying vulnerability in the infant – eg, low birth weight or prematurity. A critical developmental period – usually 1-3 months of age. An 'exogenous stressor’ – eg, sleeping prone. It is thought that a combination of immature cardiorespiratory control systems and a failure to be roused from sleep lead to death.

• #7 Sudden Infant Death Syndrome | AAFP

  https://www.aafp.org/pubs/afp/issues/2015/0601/p778.html/1000

  Sudden infant death syndrome (SIDS) is the sudden unexpected death of a child younger than one year during sleep that cannot be explained after a postmortem evaluation including autopsy, a thorough history, and scene evaluation. […] The exact mechanism of SIDS is unknown. The triple-risk hypothesis states that it occurs when three factors overlap: an infant with inherent vulnerability who is within a critical developmental period and is exposed to a stressful sleep environment. Infants who die of SIDS appear to have abnormalities of cardiac and respiratory control within the brainstem, and it is thought that these abnormalities in combination with environmental stresses (e.g., sleep positioning, temperature, exposure to tobacco smoke) lead to a terminal cascade of hypoxia, bradycardia, apnea, and death.

• #8 Sudden Infant Death Syndrome: Beyond Risk Factors

  https://www.mdpi.com/2075-1729/11/3/184

  Sudden infant death syndrome (SIDS) is defined as “the sudden death of an infant under 1 year of age which remains unexplained after thorough investigation including a complete autopsy, death scene investigation, and detailed clinical and pathological review”. […] SIDS pathogenesis is associated with a multifactorial condition that comprehends genetic, environmental and sociocultural factors. […] The most recent evidence suggests that SIDS pathogenesis is a multifactorial condition that comprehends genetic, environmental and sociocultural factors. […] The combination of intrinsic and extrinsic factors which overlap during a period of respiratory, autonomic and cardiac development, usually occurring between two to four months of age, leads to a life-threatening event during a period of sleep.

• #9 Sudden Infant Death Syndrome | Encyclopedia MDPI

  https://encyclopedia.pub/entry/7937

  Sudden infant death syndrome (SIDS) is defined as “the sudden death of an infant under 1 year of age which remains unexplained after thorough investigation including a complete autopsy, death scene investigation, and detailed clinical and pathological review”. […] The most recent evidence suggests that SIDS pathogenesis is a multifactorial condition that comprehends genetic, environmental and sociocultural factors. […] The Triple-Risk Model, first described in 1994, affirms that SIDS occurs in infants with latent biological vulnerability (brainstem abnormality or genetic pattern), who is exposed to a trigger event or extrinsic risk factor (prone sleeping, airway obstruction) during a critical phase of development. […] The combination of intrinsic and extrinsic factors which overlap during a period of respiratory, autonomic and cardiac development, usually occurring between two to four months of age, leads to a life-threatening event during a period of sleep.

• #10 Sudden Infant Death Syndrome | Encyclopedia MDPI

  https://encyclopedia.pub/entry/7937

  Failure of protective mechanisms during these episodes finally concludes with unexpected death. […] On the contrary, SIDS is less likely to occur with the removal of one of these factors. […] Most of these life-threatening events occur during the sleep period. […] These considerations highlight, indeed, the increased risk of SIDS occurring during sleeping, mainly in the prone position during specific infant development windows.

• #11 Sudden Infant Death Syndrome – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560807/

  Sudden infant death syndrome (SIDS) is the abrupt and unexplained death of an infant less than 1-year old. Despite investigation (review of clinical history, investigation of the death, and a complete autopsy), no evidence supports a specific single cause of death. […] The exact etiology of SIDS is not clear. Studies suggest that SIDS is associated with suboptimal physiologic responses to hypoxemia and hypercarbia and a combination of several intrinsic and extrinsic factors. […] A generally accepted model is a triple-risk model: SIDS occurs in infants with underlying vulnerability who undergo a trigger event at a vulnerable developmental stage. […] Infants dying as a result of SIDS display suboptimal physiologic regulatory responses. Post-mortem examination of the brainstems of SIDS victims demonstrates abnormalities in serotonergic signaling abnormalities in the arcuate nucleus and tissues that modulate ventilation and blood pressure in response to hypoxia and hypercarbia.

• #12 Sudden Infant Death Syndrome: Beyond Risk Factors

  https://www.mdpi.com/2075-1729/11/3/184

  Failure of protective mechanisms during these episodes finally concludes with unexpected death. […] In particular, serotonin brainstem abnormalities have been identified in up to 70% of infants who have died of SIDS. […] These anomalies may possibly lead to a network dysfunction that affects arousal and cardiorespiratory functions. […] The combination of multiple extrinsic and intrinsic factors leads to asphyxia. […] Consequently, asphyxia leads to bradycardia and insufficient gasping breathing, which eventually terminate with death. […] Most of these life-threatening events occur during the sleep period. […] The brainstem hypothesis in SIDS suggests that developmental abnormalities in specific brainstem regions lead to a failure of protective mechanisms against exogenous stressors associated with asphyxia, hypoxia, hypercapnia, or thermal imbalance during sleep.

• #13 Sudden Infant Death Syndrome: Beyond Risk Factors

  https://www.mdpi.com/2075-1729/11/3/184

  Failure of protective mechanisms during these episodes finally concludes with unexpected death. […] In particular, serotonin brainstem abnormalities have been identified in up to 70% of infants who have died of SIDS. […] These anomalies may possibly lead to a network dysfunction that affects arousal and cardiorespiratory functions. […] The combination of multiple extrinsic and intrinsic factors leads to asphyxia. […] Consequently, asphyxia leads to bradycardia and insufficient gasping breathing, which eventually terminate with death. […] Most of these life-threatening events occur during the sleep period. […] The brainstem hypothesis in SIDS suggests that developmental abnormalities in specific brainstem regions lead to a failure of protective mechanisms against exogenous stressors associated with asphyxia, hypoxia, hypercapnia, or thermal imbalance during sleep.

• #14 Sudden infant death syndrome: Melatonin, serotonin, and CD34 factor as possible diagnostic markers and prophylactic targets | PLOS One

  https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0256197

  The analysis of objective postmortem markers of regulatory mechanisms will help us find out new methods for SIDS prophylaxis. […] Serotonin takes part in regulating the breathing process in the respiratory center of the brain, and therefore this molecule might play an important role in SIDS pathogenesis. […] A decrease in the number of serotonin receptors was observed in the brain of infants who died from SIDS. […] It has been shown that prenatal epigenetic adverse effects, caused by the mothers smoking, obesity, pre-eclampsia, stress, etc. can disrupt serotonin metabolism and expression of serotonin receptors in the mother, placenta and brain of the fetus, which leads to a whole range of adverse postnatal and later consequences. […] The significant decrease of expression of melatonin Mt1 and Mt2 receptors in medulla, heart, and aorta tissues of infants with SIDS, as shown in our research, presents objective evidence of melatonins role in its genesis. […] The role of melatonin and such signaling molecules as serotonin and CD34 in SIDS pathogenesis can open the new prospects for elaborating new methods of predictive diagnosis of development and targeted prophylaxis of SIDS.

• #15

  https://www.wikipathways.org/pathways/WP706.html

  In 75% of infants with SIDS, there is decreased HTR1A expression relative to controls along with an increase in the number of raphe serotonin neurons. […] Over-expression of the mouse orthologue of the HTR1A gene in the juvenile mouse medulla produces an analogous phenotype to SIDS with death due to bradycardia and hypothermia. […] These genes as well as those involved in serotonin synthesis are predicted to be transcriptionally regulated by a common factor, FEV. […] In addition to serotonin, vasopressin signaling and its regulation by serotonin appear to be important in a common pathway of cardiopulmonary regulation. […] A protein that associates with vasopressin signaling, named pituitary adenylate cyclase-activating polypeptide (ADCYAP1), results in a SIDS like phenotype, characterized by a high increase in spontaneous neonatal death, exacerbated by hypothermia and hypoxia, when disrupted in mice.

• #16

  https://www.wikipathways.org/pathways/WP706.html

  In 75% of infants with SIDS, there is decreased HTR1A expression relative to controls along with an increase in the number of raphe serotonin neurons. […] Over-expression of the mouse orthologue of the HTR1A gene in the juvenile mouse medulla produces an analogous phenotype to SIDS with death due to bradycardia and hypothermia. […] These genes as well as those involved in serotonin synthesis are predicted to be transcriptionally regulated by a common factor, FEV. […] In addition to serotonin, vasopressin signaling and its regulation by serotonin appear to be important in a common pathway of cardiopulmonary regulation. […] A protein that associates with vasopressin signaling, named pituitary adenylate cyclase-activating polypeptide (ADCYAP1), results in a SIDS like phenotype, characterized by a high increase in spontaneous neonatal death, exacerbated by hypothermia and hypoxia, when disrupted in mice.

• #17 Sudden Infant Death Syndrome: Beyond Risk Factors

  https://www.mdpi.com/2075-1729/11/3/184

  Impairment of the brainstem has been related to sudden death. […] A study conducted by Kinney et al. identified a serotonergic impairment in the medullary reticular formation of the brainstem as a “core” lesion in SIDS. […] The affected serotonin brainstem network is supposed to involve serotonin neurons interconnected among arcuate nucleus, paragigantocellularis lateralis, gigantocellularis, intermediate reticular zone and caudal raphe.

• #18 Sudden Infant Death Syndrome: Beyond Risk Factors

  https://www.mdpi.com/2075-1729/11/3/184

  Failure of protective mechanisms during these episodes finally concludes with unexpected death. […] In particular, serotonin brainstem abnormalities have been identified in up to 70% of infants who have died of SIDS. […] These anomalies may possibly lead to a network dysfunction that affects arousal and cardiorespiratory functions. […] The combination of multiple extrinsic and intrinsic factors leads to asphyxia. […] Consequently, asphyxia leads to bradycardia and insufficient gasping breathing, which eventually terminate with death. […] Most of these life-threatening events occur during the sleep period. […] The brainstem hypothesis in SIDS suggests that developmental abnormalities in specific brainstem regions lead to a failure of protective mechanisms against exogenous stressors associated with asphyxia, hypoxia, hypercapnia, or thermal imbalance during sleep.

• #19 Sudden Infant Death Syndrome – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560807/

  Sudden infant death syndrome (SIDS) is the abrupt and unexplained death of an infant less than 1-year old. Despite investigation (review of clinical history, investigation of the death, and a complete autopsy), no evidence supports a specific single cause of death. […] The exact etiology of SIDS is not clear. Studies suggest that SIDS is associated with suboptimal physiologic responses to hypoxemia and hypercarbia and a combination of several intrinsic and extrinsic factors. […] A generally accepted model is a triple-risk model: SIDS occurs in infants with underlying vulnerability who undergo a trigger event at a vulnerable developmental stage. […] Infants dying as a result of SIDS display suboptimal physiologic regulatory responses. Post-mortem examination of the brainstems of SIDS victims demonstrates abnormalities in serotonergic signaling abnormalities in the arcuate nucleus and tissues that modulate ventilation and blood pressure in response to hypoxia and hypercarbia.

• #20 Sudden Infant Death Syndrome, Sleep, and the Physiology and Pathophysiology of the Respiratory Network – SIDS Sudden Infant and Early Childhood Death – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK513387/

  The failure to arouse in the presence of a hypoxic challenge can lead to SIDS. […] An important aspect of this behavioral sequence is the coupling between the respiratory behavior and heart rate control. […] Although the link between sigh and arousal is the first line of defense against a hypoxic situation, it is not the last chance to arouse. […] In conclusion, the defense against a hypoxic exposure follows a two-stage stereotypic sequence of events. […] Ultimately any death is caused by a loss of cardiorespiratory control that results in the cessation of breathing and heartbeat. […] The preBtC also reconfigures in response to hypoxia. […] It has been specifically hypothesized that a loss of serotonergic drive could lead to the loss of activity in neurons that are required for the generation of gasping or sighing.

• #21 Sudden Infant Death Syndrome, Sleep, and the Physiology and Pathophysiology of the Respiratory Network – SIDS Sudden Infant and Early Childhood Death – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK513387/

  The failure to arouse in the presence of a hypoxic challenge can lead to SIDS. […] An important aspect of this behavioral sequence is the coupling between the respiratory behavior and heart rate control. […] Although the link between sigh and arousal is the first line of defense against a hypoxic situation, it is not the last chance to arouse. […] In conclusion, the defense against a hypoxic exposure follows a two-stage stereotypic sequence of events. […] Ultimately any death is caused by a loss of cardiorespiratory control that results in the cessation of breathing and heartbeat. […] The preBtC also reconfigures in response to hypoxia. […] It has been specifically hypothesized that a loss of serotonergic drive could lead to the loss of activity in neurons that are required for the generation of gasping or sighing.

• #22 Sudden Infant Death Syndrome

  https://social.jrank.org/pages/629/Sudden-Infant-Death-Syndrome-Mechanism-Pathophysiology.html

  Current thinking regarding the mechanism of SIDS is focused on disordered regulation of the cardiorespiratory systems. The primary area of physiological regulation in humans is within the brain stem, which is located anatomically at the base of the brain. Abnormal findings on autopsy, combined with clinical observations of abnormal regulatory control, support the view that delayed maturation or disruption of brain stem function results in the infant’s lack of ability to respond when breathing and circulation patterns are insufficient to maintain life. […] Diminished respiratory responsiveness to excessive buildup of carbon dioxide (hypercarbia) or to excessively low levels of oxygen (hypoxia) has also been found in infants at risk for SIDS. […] A third respiratory regulation control mechanism is the arousal response. When experiencing hypocarbia or hypoxia, a normal sleeping infant will arouse and increase respiratory efforts in response to this life-threatening situation. Infants lacking sufficient arousal responsiveness will continue sleeping, becoming progressively more hypoxic, resulting in cardiorespiratory failure and sudden death.

• #23 Sudden Infant Death Syndrome

  https://social.jrank.org/pages/629/Sudden-Infant-Death-Syndrome-Mechanism-Pathophysiology.html

  Current thinking regarding the mechanism of SIDS is focused on disordered regulation of the cardiorespiratory systems. The primary area of physiological regulation in humans is within the brain stem, which is located anatomically at the base of the brain. Abnormal findings on autopsy, combined with clinical observations of abnormal regulatory control, support the view that delayed maturation or disruption of brain stem function results in the infant’s lack of ability to respond when breathing and circulation patterns are insufficient to maintain life. […] Diminished respiratory responsiveness to excessive buildup of carbon dioxide (hypercarbia) or to excessively low levels of oxygen (hypoxia) has also been found in infants at risk for SIDS. […] A third respiratory regulation control mechanism is the arousal response. When experiencing hypocarbia or hypoxia, a normal sleeping infant will arouse and increase respiratory efforts in response to this life-threatening situation. Infants lacking sufficient arousal responsiveness will continue sleeping, becoming progressively more hypoxic, resulting in cardiorespiratory failure and sudden death.

• #24

  https://link.springer.com/article/10.1007/s12519-024-00860-9

  This paper uniquely reveals compelling evidence for a connection between metabolic acidosis, sepsis, viral infections, and sudden unexpected child deaths and provides a solid basis for further work to define which pathway (or pathways) lead to the tragedy of SIDS. […] Mention of metabolic acidosis in the SIDS research literature is largely missing or perfunctory. […] The data of the oral presentation, documented in the Medscape report, challenge the notion that respiratory acidosis is the etiology of most, if not all, SIDS cases. Rather, McGaffey’s findings suggested that severe metabolic acidosis underlies SIDS. […] The findings were compared with children and adults who had died from other causes (number not stated), including respiratory and cardiac illness, acute trauma and various chronic diseases. The SIDS cases demonstrated extreme acidosis, with an average pH of 6.15, whereas it was 6.65 among children who died from respiratory causes.

• #25

  https://link.springer.com/article/10.1007/s12519-024-00860-9

  Dr. McGaffey speculated that brainstem respiratory center shutdown is secondary to severe metabolic acidosis, with an increase in carbonic acid levels suggesting that metabolic acidosis was the cause of death, whereas respiratory acidosis is associated with lower, not higher, carbonic acid. […] The findings suggest that viral myositis and the myopathic changes in the diaphragms of young children with respiratory infections could have interfered with excitation-contraction coupling or electromechanical function of this organ, leading to escalating diaphragm fatigue and terminating in death by paroxysmal diaphragmatic failure. […] Given that infection strongly correlates with all SIDS risk factors, this logically leaves sepsis/septic shock as the common link in generating conditions that lead to metabolic acidosis. […] The evidence for a connection between metabolic acidosis and SIDS uniquely revealed in this review is compelling and provides a solid basis for further work to define which pathway (or pathways), leads to the tragedy of SIDS.

• #26 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  Breastfeeding is associated with a lower risk of SIDS. It is not clear if co-sleeping among mothers who breastfeed without any other risk factors increases SIDS risk. SIDS rates decrease with increasing maternal age, with teenage mothers at greatest risk. Delayed or inadequate prenatal care also increases risk. Low birth weight is a significant risk factor. Premature birth increases the risk of SIDS death roughly fourfold. […] Genetics plays a role, as SIDS is more prevalent in males. There is a consistent 50% male excess in SIDS per 1000 live births of each sex. About 10 to 20% of SIDS cases are believed to be due to channelopathies, which are inherited defects in the ion channels that play an important role in the contraction of the heart. […] Drinking of alcohol by parents is linked to SIDS. One study found a positive correlation between the two during New Years celebrations and weekends. A 2022 study found that infants who died of SIDS exhibited significantly lower specific activity of butyrylcholinesterase, an enzyme involved in the brain’s arousal pathway, shortly after birth. This can serve as a biomarker to identify infants with a potential autonomic cholinergic dysfunction and elevated risk for SIDS. […] SIDS has been linked to cold weather, with this association believed to be due to over-bundling and thus, overheating. Premature babies are at four times the risk of SIDS, possibly related to an underdeveloped ability to automatically control the cardiovascular system.

• #27 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  Breastfeeding is associated with a lower risk of SIDS. It is not clear if co-sleeping among mothers who breastfeed without any other risk factors increases SIDS risk. SIDS rates decrease with increasing maternal age, with teenage mothers at greatest risk. Delayed or inadequate prenatal care also increases risk. Low birth weight is a significant risk factor. Premature birth increases the risk of SIDS death roughly fourfold. […] Genetics plays a role, as SIDS is more prevalent in males. There is a consistent 50% male excess in SIDS per 1000 live births of each sex. About 10 to 20% of SIDS cases are believed to be due to channelopathies, which are inherited defects in the ion channels that play an important role in the contraction of the heart. […] Drinking of alcohol by parents is linked to SIDS. One study found a positive correlation between the two during New Years celebrations and weekends. A 2022 study found that infants who died of SIDS exhibited significantly lower specific activity of butyrylcholinesterase, an enzyme involved in the brain’s arousal pathway, shortly after birth. This can serve as a biomarker to identify infants with a potential autonomic cholinergic dysfunction and elevated risk for SIDS. […] SIDS has been linked to cold weather, with this association believed to be due to over-bundling and thus, overheating. Premature babies are at four times the risk of SIDS, possibly related to an underdeveloped ability to automatically control the cardiovascular system.

• #28

  https://www.wikipathways.org/pathways/WP706.html

  In addition to CNS abnormalities, several studies have identified a critical link between cardiac arrhythmia (long QT syndrome) and SIDS. […] A number of genetic association studies identified functionally modifying mutations in critical cardiac channels in as many as 10% of all SIDS cases. […] The highest proportion of SIDS associated mutations (both inherited and sporadic) is found in the sodium channel gene SCN5A. […] Infection is considered a significant risk factor for SIDS. […] For inflammatory associated genes, such as TNF alpha, interleukin 10 and complement component 4, many of these mutations are only significant in the presence of infection and SIDS. […] In addition to these mutations, cerebrospinal fluid levels of IL6 are increased in SIDS cases as well as IL6R levels in the arcuate nucleus of the brain, another major site of serotonin synthesis.

• #29

  https://omim.org/entry/272120

  A number sign (#) is used with this entry because mutations in the mitochondrial genes MTTL1 (590050) and MTND1 (516000) may play a role in some cases of SIDS. Evidence has also been presented for a relationship between SIDS and mutations in the SCN5A (600163), KCNQ1 (607542), and CAV3 (601253) genes, which cause various forms of long QT syndrome (see LQT1, 192500). There is also evidence for associations between SIDS and mutation in the SLC6A4 gene (182138) and the GPD1L gene (611778). […] After death-scene investigations, Bass et al. (1986) emphasized that accidental asphyxiation by an object in the crib, smothering by 'overlying’ while sharing a bed with a parent, hyperthermia, and violent shaking (’shaken baby syndrome’) were frequent causes of sudden infant death. […] Kinney et al. (1995) hypothesized that SIDS, or a subset of SIDS, is associated with deficiency in muscarinic cholinergic receptor binding in the arcuate nucleus of the ventral surface of the medulla (ventral medullary surface, VMS), which results in an impaired response to hypercarbia or asphyxia during sleep and sudden death.

• #30

  https://www.healio.com/news/cardiology/20120225/genetic-mutations-identified-in-sudden-infant-death-syndrome

  Genetic abnormalities of the KATP channel have been implicated as a pathogenic mechanism in sudden infant death syndrome in a new study. […] Sudden infant death syndrome (SIDS) affects infants younger than 1 year and is currently unexplained, despite having a complete autopsy and clinical history review, according to researchers. […] Researchers reported finding two novel KCNJ8 mutations, one an in-frame deletion (E332del) in a 5-month-old white boy and the other a missense mutation (V346I) in a 2-month-old black girl. […] However, the researchers did write that whether the mutant KATP channels precipitated a lethal ventricular arrhythmia or a maladaptive cardiac/coronary response to a systemic metabolic stressor remains speculative since KCNJ8 is expressed in multiple tissues including heart, vascular and neuronal tissue.

• #31 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  Breastfeeding is associated with a lower risk of SIDS. It is not clear if co-sleeping among mothers who breastfeed without any other risk factors increases SIDS risk. SIDS rates decrease with increasing maternal age, with teenage mothers at greatest risk. Delayed or inadequate prenatal care also increases risk. Low birth weight is a significant risk factor. Premature birth increases the risk of SIDS death roughly fourfold. […] Genetics plays a role, as SIDS is more prevalent in males. There is a consistent 50% male excess in SIDS per 1000 live births of each sex. About 10 to 20% of SIDS cases are believed to be due to channelopathies, which are inherited defects in the ion channels that play an important role in the contraction of the heart. […] Drinking of alcohol by parents is linked to SIDS. One study found a positive correlation between the two during New Years celebrations and weekends. A 2022 study found that infants who died of SIDS exhibited significantly lower specific activity of butyrylcholinesterase, an enzyme involved in the brain’s arousal pathway, shortly after birth. This can serve as a biomarker to identify infants with a potential autonomic cholinergic dysfunction and elevated risk for SIDS. […] SIDS has been linked to cold weather, with this association believed to be due to over-bundling and thus, overheating. Premature babies are at four times the risk of SIDS, possibly related to an underdeveloped ability to automatically control the cardiovascular system.

• #32 Sudden Infant Death Syndrome (SIDS): State of the Art and Future Directions

  https://www.medsci.org/v21p0848.htm

  Infections and immune dysfunction are thought to be major pathogenic mechanisms involved in SIDS pathogenesis. […] Immune dysfunction in SIDS has been studied mainly from the perspective of dysregulation of the balance of different pro-inflammatory and anti-inflammatory cytokines. […] The existence of a wide variety of pathogens potentially related to SIDS and immune dysfunction has been evidenced, including enteric bacteria, respiratory viruses, enteroviruses, and even certain fungi. […] Overall and as previously commented, rather than a cause itself as proposed in the triple risk hypothesis, sleeping in a prone position might be potentially linked to infections and lethal toxins, explaining its role in SIDS.

• #33 Sudden Infant Death Syndrome (SIDS): State of the Art and Future Directions

  https://www.medsci.org/v21p0848.htm

  Infections and immune dysfunction are thought to be major pathogenic mechanisms involved in SIDS pathogenesis. […] Immune dysfunction in SIDS has been studied mainly from the perspective of dysregulation of the balance of different pro-inflammatory and anti-inflammatory cytokines. […] The existence of a wide variety of pathogens potentially related to SIDS and immune dysfunction has been evidenced, including enteric bacteria, respiratory viruses, enteroviruses, and even certain fungi. […] Overall and as previously commented, rather than a cause itself as proposed in the triple risk hypothesis, sleeping in a prone position might be potentially linked to infections and lethal toxins, explaining its role in SIDS.

• #34

  https://omim.org/entry/272120

  In 17 of 17 patients who died of SIDS, Kadhim et al. (2003) detected high immunoreactivity for interleukin-1-beta (IL1B; 147720) in the arcuate and dorsal vagal nuclei in the brainstem compared to controls. […] Treluyer et al. (1996) showed that the hepatic content of CYP2C proteins (see 124020) in SIDS patients was significantly enhanced; this resulted from the accumulation of RNA encoding CYP2C and was associated with a stimulation of CYP2C-dependent monooxygenase activities. […] Boles et al. (1998) concluded that approximately 5% of SIDS cases may be caused by fatty acid oxidation disorders. […] On the basis of a large study of 34,442 infants over an 18-year period with a 1-year follow-up on 33,034 infants, Schwartz et al. (1998) concluded that prolongation of the QT interval is a risk factor in SIDS. […] Audero et al. (2008) concluded that their findings showed that excessive serotonin autoinhibition is a risk factor for catastrophic autonomic dysregulation and provided a mechanism for a role of altered serotonin homeostasis in sudden infant death syndrome.

• #35

  https://www.wikipathways.org/pathways/WP706.html

  In addition to CNS abnormalities, several studies have identified a critical link between cardiac arrhythmia (long QT syndrome) and SIDS. […] A number of genetic association studies identified functionally modifying mutations in critical cardiac channels in as many as 10% of all SIDS cases. […] The highest proportion of SIDS associated mutations (both inherited and sporadic) is found in the sodium channel gene SCN5A. […] Infection is considered a significant risk factor for SIDS. […] For inflammatory associated genes, such as TNF alpha, interleukin 10 and complement component 4, many of these mutations are only significant in the presence of infection and SIDS. […] In addition to these mutations, cerebrospinal fluid levels of IL6 are increased in SIDS cases as well as IL6R levels in the arcuate nucleus of the brain, another major site of serotonin synthesis.

• #36 Sudden Infant Death Syndrome (SIDS): State of the Art and Future Directions

  https://www.medsci.org/v21p0848.htm

  Infections and immune dysfunction are thought to be major pathogenic mechanisms involved in SIDS pathogenesis. […] Immune dysfunction in SIDS has been studied mainly from the perspective of dysregulation of the balance of different pro-inflammatory and anti-inflammatory cytokines. […] The existence of a wide variety of pathogens potentially related to SIDS and immune dysfunction has been evidenced, including enteric bacteria, respiratory viruses, enteroviruses, and even certain fungi. […] Overall and as previously commented, rather than a cause itself as proposed in the triple risk hypothesis, sleeping in a prone position might be potentially linked to infections and lethal toxins, explaining its role in SIDS.

• #37 The missing link? Sudden infant death syndrome and the diaphragm – Research Outreach

  https://researchoutreach.org/articles/missing-link-sudden-infant-death-syndrome-diaphragm/

  The cause of death in sudden infant death syndrome (SIDS) is unknown. […] SIDS likely has a respiratory origin, but the diaphragm that powers the vital respiratory pump has not been adequately investigated in the context of SIDS. […] Given that SIDS likely has a respiratory origin, Mr Pontus Siren an independent researcher based in Switzerland argues that the diaphragm’s possible role in SIDS should be investigated since existing research offers no compelling reasons to exclude it. […] The hypothesis posits that the diaphragm is a vital organ that must continuously generate adequate force to maintain ventilation, and that CDF is a terminal event and the cause of death in SIDS. […] Research has shown that even minor infections can significantly reduce the force generating capacity of the human diaphragm and in experimental settings, infections have been shown to reduce the diaphragm force generating capacity by as much as 50% in 24 hours.

• #38 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  Placing an infant to sleep while lying on the belly or side rather than on the back increases the risk for SIDS. This increased risk is greatest at two to three months of age. Elevated or reduced room temperature also increases the risk, as does excessive bedding, clothing, soft sleep surfaces, and stuffed animals in the bed. Sharing a bed with parents or siblings increases the risk for SIDS. This risk is greatest in the first three months of life, when the mattress is soft, when one or more persons share the infant’s bed, especially when the bed partners are using drugs or alcohol or are smoking. The risk remains, however, even in parents who do not smoke or use drugs. The American Academy of Pediatrics thus recommends „room-sharing without bed-sharing”, stating that such an arrangement can decrease the risk of SIDS by up to 50%.

• #39 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  Placing an infant to sleep while lying on the belly or side rather than on the back increases the risk for SIDS. This increased risk is greatest at two to three months of age. Elevated or reduced room temperature also increases the risk, as does excessive bedding, clothing, soft sleep surfaces, and stuffed animals in the bed. Sharing a bed with parents or siblings increases the risk for SIDS. This risk is greatest in the first three months of life, when the mattress is soft, when one or more persons share the infant’s bed, especially when the bed partners are using drugs or alcohol or are smoking. The risk remains, however, even in parents who do not smoke or use drugs. The American Academy of Pediatrics thus recommends „room-sharing without bed-sharing”, stating that such an arrangement can decrease the risk of SIDS by up to 50%.

• #40 Sudden infant death syndrome pathophysiology – wikidoc

  https://www.wikidoc.org/index.php/Sudden_infant_death_syndrome_pathophysiology

  The exact pathogenesis of prone position and the development of sudden infant death syndrome (SIDS) is not completely understood. […] According to some new studies infant being in prone position increases the risk of infant to the following: Suffocation of the baby, Decrease in arousal of the baby, Overheating of the baby.

• #41 Sudden infant death syndrome pathophysiology – wikidoc

  https://www.wikidoc.org/index.php/Sudden_infant_death_syndrome_pathophysiology

  The exact pathogenesis of prone position and the development of sudden infant death syndrome (SIDS) is not completely understood. […] According to some new studies infant being in prone position increases the risk of infant to the following: Suffocation of the baby, Decrease in arousal of the baby, Overheating of the baby.

• #42 The missing link? Sudden infant death syndrome and the diaphragm – Research Outreach

  https://researchoutreach.org/articles/missing-link-sudden-infant-death-syndrome-diaphragm/

  Mr Siren points out that the prone sleeping position significantly increases the workload of the infant diaphragm compared to the supine position. […] Research shows that SIDS victims experience one or more hypoxic events over several hours to days before death that is characterised by decreased systemic oxygen levels. […] Mr Siren highlights that hyperthermia, or overheating, is also associated with SIDS even though a causal mechanism has not been established. […] Mr Siren has repeatedly argued that the diaphragm, which powers the critical respiratory pump, remains a serious blind spot in SIDS research. […] Mr Siren suggests that more research is needed to explore the potential role of the diaphragm in SIDS.

• #43

  https://link.springer.com/article/10.1007/s12519-024-00860-9

  Dr. McGaffey speculated that brainstem respiratory center shutdown is secondary to severe metabolic acidosis, with an increase in carbonic acid levels suggesting that metabolic acidosis was the cause of death, whereas respiratory acidosis is associated with lower, not higher, carbonic acid. […] The findings suggest that viral myositis and the myopathic changes in the diaphragms of young children with respiratory infections could have interfered with excitation-contraction coupling or electromechanical function of this organ, leading to escalating diaphragm fatigue and terminating in death by paroxysmal diaphragmatic failure. […] Given that infection strongly correlates with all SIDS risk factors, this logically leaves sepsis/septic shock as the common link in generating conditions that lead to metabolic acidosis. […] The evidence for a connection between metabolic acidosis and SIDS uniquely revealed in this review is compelling and provides a solid basis for further work to define which pathway (or pathways), leads to the tragedy of SIDS.

• #44 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  Placing an infant to sleep while lying on the belly or side rather than on the back increases the risk for SIDS. This increased risk is greatest at two to three months of age. Elevated or reduced room temperature also increases the risk, as does excessive bedding, clothing, soft sleep surfaces, and stuffed animals in the bed. Sharing a bed with parents or siblings increases the risk for SIDS. This risk is greatest in the first three months of life, when the mattress is soft, when one or more persons share the infant’s bed, especially when the bed partners are using drugs or alcohol or are smoking. The risk remains, however, even in parents who do not smoke or use drugs. The American Academy of Pediatrics thus recommends „room-sharing without bed-sharing”, stating that such an arrangement can decrease the risk of SIDS by up to 50%.

• #45 Sudden Infant Death Syndrome | AAFP

  https://www.aafp.org/pubs/afp/issues/2015/0601/p778.html/1000

  Sudden infant death syndrome (SIDS) is the sudden unexpected death of a child younger than one year during sleep that cannot be explained after a postmortem evaluation including autopsy, a thorough history, and scene evaluation. […] The exact mechanism of SIDS is unknown. The triple-risk hypothesis states that it occurs when three factors overlap: an infant with inherent vulnerability who is within a critical developmental period and is exposed to a stressful sleep environment. Infants who die of SIDS appear to have abnormalities of cardiac and respiratory control within the brainstem, and it is thought that these abnormalities in combination with environmental stresses (e.g., sleep positioning, temperature, exposure to tobacco smoke) lead to a terminal cascade of hypoxia, bradycardia, apnea, and death.

• #46 Understanding SIDS Risk Factors and Pathogenesislogo-32logo-40logo-60NEJM Journal WatchnejmJW_1L_RGB-b

  https://www.jwatch.org/pa200908190000001/2009/08/19/understanding-sids-risk-factors-and-pathogenesis

  In infants with underlying vulnerability, certain stressors can trigger the sequence of events that lead to asphyxia and sudden infant death. […] Sudden infant death syndrome (SIDS) refers to the unexpected death of an infant younger than 12 months during sleep with no known cause. […] SIDS is now believed to be caused by the interaction of multiple factors — a critical developmental period (first 12 months of life), underlying intrinsic vulnerability, and exogenous stressors. […] Although the risk factors listed above for SIDS have been identified, the pathway that leads to death is still uncertain. Currently, the predominant theory is failure in the respiratory pathway described as follows: […] In vulnerable infants, the various genetic, developmental, and environmental risk factors described above can affect the respiratory pathway at any stage, leading to fewer arousal periods, ineffectual gasping, or a failure of the autonomic nervous system to stimulate resuscitation.

• #47 Sudden Infant Death Syndrome | AAFP

  https://www.aafp.org/pubs/afp/issues/2015/0601/p778.html/1000

  Sudden infant death syndrome (SIDS) is the sudden unexpected death of a child younger than one year during sleep that cannot be explained after a postmortem evaluation including autopsy, a thorough history, and scene evaluation. […] The exact mechanism of SIDS is unknown. The triple-risk hypothesis states that it occurs when three factors overlap: an infant with inherent vulnerability who is within a critical developmental period and is exposed to a stressful sleep environment. Infants who die of SIDS appear to have abnormalities of cardiac and respiratory control within the brainstem, and it is thought that these abnormalities in combination with environmental stresses (e.g., sleep positioning, temperature, exposure to tobacco smoke) lead to a terminal cascade of hypoxia, bradycardia, apnea, and death.

• #48 Understanding SIDS Risk Factors and Pathogenesislogo-32logo-40logo-60NEJM Journal WatchnejmJW_1L_RGB-b

  https://www.jwatch.org/pa200908190000001/2009/08/19/understanding-sids-risk-factors-and-pathogenesis

  In infants with underlying vulnerability, certain stressors can trigger the sequence of events that lead to asphyxia and sudden infant death. […] Sudden infant death syndrome (SIDS) refers to the unexpected death of an infant younger than 12 months during sleep with no known cause. […] SIDS is now believed to be caused by the interaction of multiple factors — a critical developmental period (first 12 months of life), underlying intrinsic vulnerability, and exogenous stressors. […] Although the risk factors listed above for SIDS have been identified, the pathway that leads to death is still uncertain. Currently, the predominant theory is failure in the respiratory pathway described as follows: […] In vulnerable infants, the various genetic, developmental, and environmental risk factors described above can affect the respiratory pathway at any stage, leading to fewer arousal periods, ineffectual gasping, or a failure of the autonomic nervous system to stimulate resuscitation.

• #49 Sudden Infant Death Syndrome: Beyond Risk Factors

  https://www.mdpi.com/2075-1729/11/3/184

  Failure of protective mechanisms during these episodes finally concludes with unexpected death. […] In particular, serotonin brainstem abnormalities have been identified in up to 70% of infants who have died of SIDS. […] These anomalies may possibly lead to a network dysfunction that affects arousal and cardiorespiratory functions. […] The combination of multiple extrinsic and intrinsic factors leads to asphyxia. […] Consequently, asphyxia leads to bradycardia and insufficient gasping breathing, which eventually terminate with death. […] Most of these life-threatening events occur during the sleep period. […] The brainstem hypothesis in SIDS suggests that developmental abnormalities in specific brainstem regions lead to a failure of protective mechanisms against exogenous stressors associated with asphyxia, hypoxia, hypercapnia, or thermal imbalance during sleep.

• #50 Sudden Infant Death Syndrome: Beyond Risk Factors

  https://www.mdpi.com/2075-1729/11/3/184

  Failure of protective mechanisms during these episodes finally concludes with unexpected death. […] In particular, serotonin brainstem abnormalities have been identified in up to 70% of infants who have died of SIDS. […] These anomalies may possibly lead to a network dysfunction that affects arousal and cardiorespiratory functions. […] The combination of multiple extrinsic and intrinsic factors leads to asphyxia. […] Consequently, asphyxia leads to bradycardia and insufficient gasping breathing, which eventually terminate with death. […] Most of these life-threatening events occur during the sleep period. […] The brainstem hypothesis in SIDS suggests that developmental abnormalities in specific brainstem regions lead to a failure of protective mechanisms against exogenous stressors associated with asphyxia, hypoxia, hypercapnia, or thermal imbalance during sleep.

• #51

  https://ujms.net/index.php/ujms/article/view/6082

  Sudden infant death syndrome (SIDS) is the leading cause of death in infants between the ages of 1 and 12 months in developed countries. SIDS is by definition a diagnosis of exclusion, and its mechanism of action is unknown. The SIDSCritical Diaphragm Failure (CDF) hypothesis postulates that the cause of death in SIDS is respiratory failure caused by CDF. Four principal risk factors contribute to CDF in young infants: undeveloped respiratory muscles, non-lethal infections, prone resting position, and REM sleep. Even relatively minor infections can cause an acute and significant reduction in diaphragm force generation capacity that in conjunction with other risk factors can precipitate CDF. […] Understanding the underlying mechanism of SIDS may help in formulating new approaches to child care that can help to further reduce the incidence of SIDS.

• #52

  https://ujms.net/index.php/ujms/article/view/6082

  Sudden infant death syndrome (SIDS) is the leading cause of death in infants between the ages of 1 and 12 months in developed countries. SIDS is by definition a diagnosis of exclusion, and its mechanism of action is unknown. The SIDSCritical Diaphragm Failure (CDF) hypothesis postulates that the cause of death in SIDS is respiratory failure caused by CDF. Four principal risk factors contribute to CDF in young infants: undeveloped respiratory muscles, non-lethal infections, prone resting position, and REM sleep. Even relatively minor infections can cause an acute and significant reduction in diaphragm force generation capacity that in conjunction with other risk factors can precipitate CDF. […] Understanding the underlying mechanism of SIDS may help in formulating new approaches to child care that can help to further reduce the incidence of SIDS.

• #53

  https://ujms.net/index.php/ujms/article/view/6082

  Sudden infant death syndrome (SIDS) is the leading cause of death in infants between the ages of 1 and 12 months in developed countries. SIDS is by definition a diagnosis of exclusion, and its mechanism of action is unknown. The SIDSCritical Diaphragm Failure (CDF) hypothesis postulates that the cause of death in SIDS is respiratory failure caused by CDF. Four principal risk factors contribute to CDF in young infants: undeveloped respiratory muscles, non-lethal infections, prone resting position, and REM sleep. Even relatively minor infections can cause an acute and significant reduction in diaphragm force generation capacity that in conjunction with other risk factors can precipitate CDF. […] Understanding the underlying mechanism of SIDS may help in formulating new approaches to child care that can help to further reduce the incidence of SIDS.

• #54

  https://www.wikipathways.org/pathways/WP706.html

  In addition to CNS abnormalities, several studies have identified a critical link between cardiac arrhythmia (long QT syndrome) and SIDS. […] A number of genetic association studies identified functionally modifying mutations in critical cardiac channels in as many as 10% of all SIDS cases. […] The highest proportion of SIDS associated mutations (both inherited and sporadic) is found in the sodium channel gene SCN5A. […] Infection is considered a significant risk factor for SIDS. […] For inflammatory associated genes, such as TNF alpha, interleukin 10 and complement component 4, many of these mutations are only significant in the presence of infection and SIDS. […] In addition to these mutations, cerebrospinal fluid levels of IL6 are increased in SIDS cases as well as IL6R levels in the arcuate nucleus of the brain, another major site of serotonin synthesis.

• #55

  https://www.wikipathways.org/pathways/WP706.html

  In addition to CNS abnormalities, several studies have identified a critical link between cardiac arrhythmia (long QT syndrome) and SIDS. […] A number of genetic association studies identified functionally modifying mutations in critical cardiac channels in as many as 10% of all SIDS cases. […] The highest proportion of SIDS associated mutations (both inherited and sporadic) is found in the sodium channel gene SCN5A. […] Infection is considered a significant risk factor for SIDS. […] For inflammatory associated genes, such as TNF alpha, interleukin 10 and complement component 4, many of these mutations are only significant in the presence of infection and SIDS. […] In addition to these mutations, cerebrospinal fluid levels of IL6 are increased in SIDS cases as well as IL6R levels in the arcuate nucleus of the brain, another major site of serotonin synthesis.

• #56

  https://www.wikipathways.org/pathways/WP706.html

  In addition to CNS abnormalities, several studies have identified a critical link between cardiac arrhythmia (long QT syndrome) and SIDS. […] A number of genetic association studies identified functionally modifying mutations in critical cardiac channels in as many as 10% of all SIDS cases. […] The highest proportion of SIDS associated mutations (both inherited and sporadic) is found in the sodium channel gene SCN5A. […] Infection is considered a significant risk factor for SIDS. […] For inflammatory associated genes, such as TNF alpha, interleukin 10 and complement component 4, many of these mutations are only significant in the presence of infection and SIDS. […] In addition to these mutations, cerebrospinal fluid levels of IL6 are increased in SIDS cases as well as IL6R levels in the arcuate nucleus of the brain, another major site of serotonin synthesis.

• #57

  https://www.healio.com/news/cardiology/20120225/genetic-mutations-identified-in-sudden-infant-death-syndrome

  Genetic abnormalities of the KATP channel have been implicated as a pathogenic mechanism in sudden infant death syndrome in a new study. […] Sudden infant death syndrome (SIDS) affects infants younger than 1 year and is currently unexplained, despite having a complete autopsy and clinical history review, according to researchers. […] Researchers reported finding two novel KCNJ8 mutations, one an in-frame deletion (E332del) in a 5-month-old white boy and the other a missense mutation (V346I) in a 2-month-old black girl. […] However, the researchers did write that whether the mutant KATP channels precipitated a lethal ventricular arrhythmia or a maladaptive cardiac/coronary response to a systemic metabolic stressor remains speculative since KCNJ8 is expressed in multiple tissues including heart, vascular and neuronal tissue.

• #58

  https://www.wikipathways.org/pathways/WP706.html

  Regulation of thermogenesis by brown adipose tissue has been proposed be an important component of SIDS, given that SIDS incidence is highest in the winter time and that animal models of SIDS demonstrate variation in body temperature. […] It is important to note that in the large majority of all these studies, sleeping position and smoking were among the most significant risk factors for SIDS.

• #59 Systems-level perspective of sudden infant death syndrome | Pediatric Research

  https://www.nature.com/articles/pr201490

  Infection is considered a significant risk factor for SIDS, and several mutations have been identified in genes associated with inflammatory responses and thermoregulation. […] Regulation of thermogenesis by brown adipose tissue has been proposed to be an important component of SIDS, given that SIDS incidence is highest in the winter months and that animal models of SIDS demonstrate variations in body temperature compared with controls. […] An intriguing strategy to evaluate the penetrance of reported SIDS polymorphisms is in reference to the large and growing DNA sequence and single-nucleotide polymorphism databases. […] Although the incidence of SIDS has decreased substantially through educational campaigns that promote safe sleep, the number of SIDS deaths remains high. […] The SIDS WikiPathway resource described herein represents an important starting point from which to begin evaluating next-generation genomic profiles in a focused way, to identify events that may not immediately seem to be related. […] More importantly, we identified a number of proteins that regulate key biological processes associated with SIDS pathophysiology, such as brainstem gliosis, hypoxia, and inhibition of synaptic vesicle fusion.

• #60 The missing link? Sudden infant death syndrome and the diaphragm – Research Outreach

  https://researchoutreach.org/articles/missing-link-sudden-infant-death-syndrome-diaphragm/

  The cause of death in sudden infant death syndrome (SIDS) is unknown. […] SIDS likely has a respiratory origin, but the diaphragm that powers the vital respiratory pump has not been adequately investigated in the context of SIDS. […] Given that SIDS likely has a respiratory origin, Mr Pontus Siren an independent researcher based in Switzerland argues that the diaphragm’s possible role in SIDS should be investigated since existing research offers no compelling reasons to exclude it. […] The hypothesis posits that the diaphragm is a vital organ that must continuously generate adequate force to maintain ventilation, and that CDF is a terminal event and the cause of death in SIDS. […] Research has shown that even minor infections can significantly reduce the force generating capacity of the human diaphragm and in experimental settings, infections have been shown to reduce the diaphragm force generating capacity by as much as 50% in 24 hours.

• #61 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  Breastfeeding is associated with a lower risk of SIDS. It is not clear if co-sleeping among mothers who breastfeed without any other risk factors increases SIDS risk. SIDS rates decrease with increasing maternal age, with teenage mothers at greatest risk. Delayed or inadequate prenatal care also increases risk. Low birth weight is a significant risk factor. Premature birth increases the risk of SIDS death roughly fourfold. […] Genetics plays a role, as SIDS is more prevalent in males. There is a consistent 50% male excess in SIDS per 1000 live births of each sex. About 10 to 20% of SIDS cases are believed to be due to channelopathies, which are inherited defects in the ion channels that play an important role in the contraction of the heart. […] Drinking of alcohol by parents is linked to SIDS. One study found a positive correlation between the two during New Years celebrations and weekends. A 2022 study found that infants who died of SIDS exhibited significantly lower specific activity of butyrylcholinesterase, an enzyme involved in the brain’s arousal pathway, shortly after birth. This can serve as a biomarker to identify infants with a potential autonomic cholinergic dysfunction and elevated risk for SIDS. […] SIDS has been linked to cold weather, with this association believed to be due to over-bundling and thus, overheating. Premature babies are at four times the risk of SIDS, possibly related to an underdeveloped ability to automatically control the cardiovascular system.

• #62 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  Breastfeeding is associated with a lower risk of SIDS. It is not clear if co-sleeping among mothers who breastfeed without any other risk factors increases SIDS risk. SIDS rates decrease with increasing maternal age, with teenage mothers at greatest risk. Delayed or inadequate prenatal care also increases risk. Low birth weight is a significant risk factor. Premature birth increases the risk of SIDS death roughly fourfold. […] Genetics plays a role, as SIDS is more prevalent in males. There is a consistent 50% male excess in SIDS per 1000 live births of each sex. About 10 to 20% of SIDS cases are believed to be due to channelopathies, which are inherited defects in the ion channels that play an important role in the contraction of the heart. […] Drinking of alcohol by parents is linked to SIDS. One study found a positive correlation between the two during New Years celebrations and weekends. A 2022 study found that infants who died of SIDS exhibited significantly lower specific activity of butyrylcholinesterase, an enzyme involved in the brain’s arousal pathway, shortly after birth. This can serve as a biomarker to identify infants with a potential autonomic cholinergic dysfunction and elevated risk for SIDS. […] SIDS has been linked to cold weather, with this association believed to be due to over-bundling and thus, overheating. Premature babies are at four times the risk of SIDS, possibly related to an underdeveloped ability to automatically control the cardiovascular system.

• #63 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  Breastfeeding is associated with a lower risk of SIDS. It is not clear if co-sleeping among mothers who breastfeed without any other risk factors increases SIDS risk. SIDS rates decrease with increasing maternal age, with teenage mothers at greatest risk. Delayed or inadequate prenatal care also increases risk. Low birth weight is a significant risk factor. Premature birth increases the risk of SIDS death roughly fourfold. […] Genetics plays a role, as SIDS is more prevalent in males. There is a consistent 50% male excess in SIDS per 1000 live births of each sex. About 10 to 20% of SIDS cases are believed to be due to channelopathies, which are inherited defects in the ion channels that play an important role in the contraction of the heart. […] Drinking of alcohol by parents is linked to SIDS. One study found a positive correlation between the two during New Years celebrations and weekends. A 2022 study found that infants who died of SIDS exhibited significantly lower specific activity of butyrylcholinesterase, an enzyme involved in the brain’s arousal pathway, shortly after birth. This can serve as a biomarker to identify infants with a potential autonomic cholinergic dysfunction and elevated risk for SIDS. […] SIDS has been linked to cold weather, with this association believed to be due to over-bundling and thus, overheating. Premature babies are at four times the risk of SIDS, possibly related to an underdeveloped ability to automatically control the cardiovascular system.

• #64 Sudden infant death syndrome may have a biological cause | New Scientist

  https://www.newscientist.com/article/2375424-sudden-infant-death-syndrome-may-have-a-biological-cause/

  Sudden infant death syndrome may partly be caused by reduced binding of the neurotransmitter serotonin to receptors in the lower brainstem. Researchers may have identified a biological mechanism behind sudden infant death syndrome (SIDS). Among the babies who died of SIDS, the researchers identified differences in how the neurotransmitter serotonin bound to their so-called 5-HT2A/C receptors, found in the lower brainstem. Among the babies who died of SIDS, there was reduced serotonin binding to the 5-HT2A/C receptors or the binding didn’t increase as expected as the infants got older, compared with the babies who died of non-SIDS causes, says Haynes. These differences may combine with other biological and environmental factors, such as an infant’s sleeping position, to increase their risk of SIDS, say the researchers. Better understanding the various mechanisms that can lead to SIDS, such as potential genetic abnormalities, could one day help scientists develop a test that predicts an infant’s risk, says Haynes. The fact that the study found that some of the babies who died from SIDS didn’t have increased serotonin binding as they aged could explain why these deaths often occur between 2 and 4 months of age, he says, as this is when infants undergo rapid changes in their breathing control.

• #65 Sudden Infant Death Syndrome: Beyond Risk Factors – ADS

  https://ui.adsabs.harvard.edu/abs/2021Life…11..184P/abstract

  Sudden infant death syndrome (SIDS) is defined as „the sudden death of an infant under 1 year of age which remains unexplained after thorough investigation including a complete autopsy, death scene investigation, and detailed clinical and pathological review”. […] SIDS pathogenesis is associated with a multifactorial condition that comprehends genetic, environmental and sociocultural factors. […] Developing brain susceptibility, intrinsic vulnerability and early identification of infants with high risk of SIDS represents a challenge. […] Progress in SIDS research appears to be fundamental to the ultimate aim of eradicating SIDS deaths. […] A complex model that combines different risk factor data from biomarkers and omic analysis may represent a tool to identify a SIDS risk profile in newborn settings.

• #66 New Step in Understanding the Pathogenetic Mechanism of Sudden Infant Death Syndrome: Involvement of the Pontine Reticular Gigantocellular Nucleus

  https://www.mdpi.com/1422-0067/25/13/6920

  This study aimed to investigate, for the first time, the potential role of the gigantocellular nucleus, a component of the reticular formation, in the pathogenetic mechanism of Sudden Infant Death Syndrome (SIDS), an event frequently ascribed to failure to arouse from sleep. […] In 68% of SIDS cases, but never in controls, we observed hypoplasia of the pontine portion of the gigantocellular nucleus. […] A strong correlation was observed between these findings and maternal smoking in SIDS cases when compared with controls. […] In conclusion we believe that this study sheds new light on the pathogenetic processes underlying SIDS, particularly in cases associated with maternal smoking during pregnancy. […] The focus of this study was on one of the components of the reticular formation, namely the gigantocellular nucleus (GCn), with the aim of broadening our knowledge on the pontine tract (pGCn) due to its involvement in the control of sleep–wake cycles, as highlighted in experimental studies.

• #67 New Step in Understanding the Pathogenetic Mechanism of Sudden Infant Death Syndrome: Involvement of the Pontine Reticular Gigantocellular Nucleus

  https://www.mdpi.com/1422-0067/25/13/6920

  The results of our study fulfilled our expectations as they highlighted a significantly higher incidence of both structural and functional neuronal abnormalities in the pontine portion of the GCn in SIDS cases than in the age-matched controls. […] More specifically, neuronal deficiency (hypoplasia, even severe) of the pGCn was found in a high percentage of SIDS cases (68%), contrary to what was observed in all control cases, in which the development of the pGCn constantly showed a normal structure. […] The significant association observed between abnormal findings (namely hypoplasia and TH-negative/low immunoexpression) and maternal smoking, particularly within the SIDS group, is noteworthy. […] This finding suggests biological variability in response to prenatal smoke exposure, impacting the development of specific structures in different brain areas. […] As a concluding remark, our findings suggest that pGCn developmental defects, encompassing both structural and functional abnormalities, alone or in association with other brain abnormalities, may contribute to impaired motor activation during awakening, a hallmark of SIDS.

• #68 New Step in Understanding the Pathogenetic Mechanism of Sudden Infant Death Syndrome: Involvement of the Pontine Reticular Gigantocellular Nucleus

  https://www.mdpi.com/1422-0067/25/13/6920

  This study aimed to investigate, for the first time, the potential role of the gigantocellular nucleus, a component of the reticular formation, in the pathogenetic mechanism of Sudden Infant Death Syndrome (SIDS), an event frequently ascribed to failure to arouse from sleep. […] In 68% of SIDS cases, but never in controls, we observed hypoplasia of the pontine portion of the gigantocellular nucleus. […] A strong correlation was observed between these findings and maternal smoking in SIDS cases when compared with controls. […] In conclusion we believe that this study sheds new light on the pathogenetic processes underlying SIDS, particularly in cases associated with maternal smoking during pregnancy. […] The focus of this study was on one of the components of the reticular formation, namely the gigantocellular nucleus (GCn), with the aim of broadening our knowledge on the pontine tract (pGCn) due to its involvement in the control of sleep–wake cycles, as highlighted in experimental studies.

• #69 New Step in Understanding the Pathogenetic Mechanism of Sudden Infant Death Syndrome: Involvement of the Pontine Reticular Gigantocellular Nucleus

  https://www.mdpi.com/1422-0067/25/13/6920

  The results of our study fulfilled our expectations as they highlighted a significantly higher incidence of both structural and functional neuronal abnormalities in the pontine portion of the GCn in SIDS cases than in the age-matched controls. […] More specifically, neuronal deficiency (hypoplasia, even severe) of the pGCn was found in a high percentage of SIDS cases (68%), contrary to what was observed in all control cases, in which the development of the pGCn constantly showed a normal structure. […] The significant association observed between abnormal findings (namely hypoplasia and TH-negative/low immunoexpression) and maternal smoking, particularly within the SIDS group, is noteworthy. […] This finding suggests biological variability in response to prenatal smoke exposure, impacting the development of specific structures in different brain areas. […] As a concluding remark, our findings suggest that pGCn developmental defects, encompassing both structural and functional abnormalities, alone or in association with other brain abnormalities, may contribute to impaired motor activation during awakening, a hallmark of SIDS.

• #70 Scientists Seek Connection Between Toxin-causing Bacterium and Sudden Infant Death Syndrome | National Institute of Justice

  https://nij.ojp.gov/topics/articles/scientists-seek-connection-between-toxin-causing-bacterium-and-sudden-infant-death

  Researchers believe a bacterium that causes food poisoning and other diseases may underlie some SIDS cases. […] The current theory is that selective neuronal loss and/or reduced neurotransmitter binding within [a portion of the medulla oblongata] makes SIDS victims uniquely susceptible to accidental asphyxiation during periods of sleep. […] How the resulting enterotoxin might result in the lack of respiratory drive present in SIDS has been attributed to its effects as a parasympathomimetic poison, which suppresses cardiorespiratory function, the researchers noted. However, a definitive mechanism is yet to be identified. […] The researchers work suggests that neurons that comprise the VMS are susceptible to enterotoxin-mediated damage. Furthermore, it may provide a mechanism for how enterotoxin might cause brain damage commonly found in SIDS victims on autopsy. […] The researchers concluded that their results suggest a strong association between CPE exposure and SIDS, and perhaps also a relationship to death by respiratory compromise more generally (through respiratory infections).

• #71 Scientists Seek Connection Between Toxin-causing Bacterium and Sudden Infant Death Syndrome | National Institute of Justice

  https://nij.ojp.gov/topics/articles/scientists-seek-connection-between-toxin-causing-bacterium-and-sudden-infant-death

  Researchers believe a bacterium that causes food poisoning and other diseases may underlie some SIDS cases. […] The current theory is that selective neuronal loss and/or reduced neurotransmitter binding within [a portion of the medulla oblongata] makes SIDS victims uniquely susceptible to accidental asphyxiation during periods of sleep. […] How the resulting enterotoxin might result in the lack of respiratory drive present in SIDS has been attributed to its effects as a parasympathomimetic poison, which suppresses cardiorespiratory function, the researchers noted. However, a definitive mechanism is yet to be identified. […] The researchers work suggests that neurons that comprise the VMS are susceptible to enterotoxin-mediated damage. Furthermore, it may provide a mechanism for how enterotoxin might cause brain damage commonly found in SIDS victims on autopsy. […] The researchers concluded that their results suggest a strong association between CPE exposure and SIDS, and perhaps also a relationship to death by respiratory compromise more generally (through respiratory infections).

• #72 Scientists Seek Connection Between Toxin-causing Bacterium and Sudden Infant Death Syndrome | National Institute of Justice

  https://nij.ojp.gov/topics/articles/scientists-seek-connection-between-toxin-causing-bacterium-and-sudden-infant-death

  Researchers believe a bacterium that causes food poisoning and other diseases may underlie some SIDS cases. […] The current theory is that selective neuronal loss and/or reduced neurotransmitter binding within [a portion of the medulla oblongata] makes SIDS victims uniquely susceptible to accidental asphyxiation during periods of sleep. […] How the resulting enterotoxin might result in the lack of respiratory drive present in SIDS has been attributed to its effects as a parasympathomimetic poison, which suppresses cardiorespiratory function, the researchers noted. However, a definitive mechanism is yet to be identified. […] The researchers work suggests that neurons that comprise the VMS are susceptible to enterotoxin-mediated damage. Furthermore, it may provide a mechanism for how enterotoxin might cause brain damage commonly found in SIDS victims on autopsy. […] The researchers concluded that their results suggest a strong association between CPE exposure and SIDS, and perhaps also a relationship to death by respiratory compromise more generally (through respiratory infections).

• #73

  https://link.springer.com/article/10.1007/s12519-024-00860-9

  Decades of mainstream SIDS research based on the Triple Risk Model and neuropathological findings have failed to provide convincing evidence for a primary CNS-based mechanism behind putative secondary dyshomeostasis (respiratory or cardiac) or impaired arousal. […] Newly revealed data indicate that severe metabolic acidosis (and severe hyperkalemia) is a common accompaniment in SIDS. This supports the direct effect of sepsis on vital-organ function and occurrence of secondary CNS changes accompanied by the dyshomeostasis leading to SIDS. […] Most SIDS risk factors relate directly or indirectly to infection. This consequently elevated the position of septic or superantigenic shock and viremia in causing secondary organ failure leading to SIDS. […] Just as acidosis lowers the threshold for ventricular fibrillation and sudden cardiac arrest, it could also contribute to similarly unstable diaphragm excitation states leading to respiratory failure.

• #74

  https://link.springer.com/article/10.1007/s12519-024-00860-9

  Decades of mainstream SIDS research based on the Triple Risk Model and neuropathological findings have failed to provide convincing evidence for a primary CNS-based mechanism behind putative secondary dyshomeostasis (respiratory or cardiac) or impaired arousal. […] Newly revealed data indicate that severe metabolic acidosis (and severe hyperkalemia) is a common accompaniment in SIDS. This supports the direct effect of sepsis on vital-organ function and occurrence of secondary CNS changes accompanied by the dyshomeostasis leading to SIDS. […] Most SIDS risk factors relate directly or indirectly to infection. This consequently elevated the position of septic or superantigenic shock and viremia in causing secondary organ failure leading to SIDS. […] Just as acidosis lowers the threshold for ventricular fibrillation and sudden cardiac arrest, it could also contribute to similarly unstable diaphragm excitation states leading to respiratory failure.

• #75

  https://link.springer.com/article/10.1007/s12519-024-00860-9

  This paper uniquely reveals compelling evidence for a connection between metabolic acidosis, sepsis, viral infections, and sudden unexpected child deaths and provides a solid basis for further work to define which pathway (or pathways) lead to the tragedy of SIDS. […] Mention of metabolic acidosis in the SIDS research literature is largely missing or perfunctory. […] The data of the oral presentation, documented in the Medscape report, challenge the notion that respiratory acidosis is the etiology of most, if not all, SIDS cases. Rather, McGaffey’s findings suggested that severe metabolic acidosis underlies SIDS. […] The findings were compared with children and adults who had died from other causes (number not stated), including respiratory and cardiac illness, acute trauma and various chronic diseases. The SIDS cases demonstrated extreme acidosis, with an average pH of 6.15, whereas it was 6.65 among children who died from respiratory causes.

• #76

  https://link.springer.com/article/10.1007/s12519-024-00860-9

  This paper uniquely reveals compelling evidence for a connection between metabolic acidosis, sepsis, viral infections, and sudden unexpected child deaths and provides a solid basis for further work to define which pathway (or pathways) lead to the tragedy of SIDS. […] Mention of metabolic acidosis in the SIDS research literature is largely missing or perfunctory. […] The data of the oral presentation, documented in the Medscape report, challenge the notion that respiratory acidosis is the etiology of most, if not all, SIDS cases. Rather, McGaffey’s findings suggested that severe metabolic acidosis underlies SIDS. […] The findings were compared with children and adults who had died from other causes (number not stated), including respiratory and cardiac illness, acute trauma and various chronic diseases. The SIDS cases demonstrated extreme acidosis, with an average pH of 6.15, whereas it was 6.65 among children who died from respiratory causes.

• #77

  https://link.springer.com/article/10.1007/s12519-024-00860-9

  Dr. McGaffey speculated that brainstem respiratory center shutdown is secondary to severe metabolic acidosis, with an increase in carbonic acid levels suggesting that metabolic acidosis was the cause of death, whereas respiratory acidosis is associated with lower, not higher, carbonic acid. […] The findings suggest that viral myositis and the myopathic changes in the diaphragms of young children with respiratory infections could have interfered with excitation-contraction coupling or electromechanical function of this organ, leading to escalating diaphragm fatigue and terminating in death by paroxysmal diaphragmatic failure. […] Given that infection strongly correlates with all SIDS risk factors, this logically leaves sepsis/septic shock as the common link in generating conditions that lead to metabolic acidosis. […] The evidence for a connection between metabolic acidosis and SIDS uniquely revealed in this review is compelling and provides a solid basis for further work to define which pathway (or pathways), leads to the tragedy of SIDS.

• #78 Sudden Infant Death Syndrome: Beyond Risk Factors

  https://www.mdpi.com/2075-1729/11/3/184

  Sudden infant death syndrome (SIDS) is defined as “the sudden death of an infant under 1 year of age which remains unexplained after thorough investigation including a complete autopsy, death scene investigation, and detailed clinical and pathological review”. […] SIDS pathogenesis is associated with a multifactorial condition that comprehends genetic, environmental and sociocultural factors. […] The most recent evidence suggests that SIDS pathogenesis is a multifactorial condition that comprehends genetic, environmental and sociocultural factors. […] The combination of intrinsic and extrinsic factors which overlap during a period of respiratory, autonomic and cardiac development, usually occurring between two to four months of age, leads to a life-threatening event during a period of sleep.

• #79 Sudden Infant Death Syndrome (SIDS/Cot Death)

  https://patient.info/doctor/sudden-infant-death-syndrome

  Sudden infant death syndrome is defined as the sudden and unexpected death of an infant under 1 year of age, apparently occurring during sleep, which remains unexplained after a thorough investigation including a complete autopsy and review of the circumstances of death. […] Whilst the pathogenesis of SIDS is not yet fully elucidated, there is evidence that an important subset of SIDS infants have serotonergic abnormalities resulting from a problem in the medullary reticular formation which is comprised of nuclei that contain serotonin neurons. This lesion could lead to a failure of protective brainstem responses to homeostatic challenges during sleep in a critical developmental period which cause sleep-related sudden death. This is known as the serotonin brainstem hypothesis. […] A 'Triple Risk Model’ was proposed in 1994, emphasising the role and interaction of a number of factors in the pathogenesis of SIDS.

• #80 Sudden Infant Death Syndrome SIDS | Boston Children’s Hospital

  https://www.childrenshospital.org/conditions/sudden-infant-death-syndrome-sids

  SIDS is a mysterious syndrome, and by its very definition the cause cannot be determined. Childrens researchers have uncovered strong evidence that SIDS has a biological basis, and are continuing to work towards determining the underlying causes and identifying at-risk babies. […] Recent autopsy data provide the strongest evidence yet that sudden infant death syndrome (SIDS) has a concrete biological basis. […] Our researchers found that the brainstems of SIDS infants have lower levels of the neurochemical serotonin and a signaling protein called 14-3-3. They also had significantly fewer receptors for serotonin and another neurochemical gamma-amino-butyric acid (GABA). These abnormalities are thought to prevent SIDS infants from properly controlling the vital functions that keep them alive and ultimately to lead to their death.

• #81 Sudden Infant Death Syndrome | AAFP

  https://www.aafp.org/pubs/afp/issues/2015/0601/p778.html/1000

  Sudden infant death syndrome (SIDS) is the sudden unexpected death of a child younger than one year during sleep that cannot be explained after a postmortem evaluation including autopsy, a thorough history, and scene evaluation. […] The exact mechanism of SIDS is unknown. The triple-risk hypothesis states that it occurs when three factors overlap: an infant with inherent vulnerability who is within a critical developmental period and is exposed to a stressful sleep environment. Infants who die of SIDS appear to have abnormalities of cardiac and respiratory control within the brainstem, and it is thought that these abnormalities in combination with environmental stresses (e.g., sleep positioning, temperature, exposure to tobacco smoke) lead to a terminal cascade of hypoxia, bradycardia, apnea, and death.

• #82

  https://link.springer.com/article/10.1007/s12519-024-00860-9

  Decades of mainstream SIDS research based on the Triple Risk Model and neuropathological findings have failed to provide convincing evidence for a primary CNS-based mechanism behind putative secondary dyshomeostasis (respiratory or cardiac) or impaired arousal. […] Newly revealed data indicate that severe metabolic acidosis (and severe hyperkalemia) is a common accompaniment in SIDS. This supports the direct effect of sepsis on vital-organ function and occurrence of secondary CNS changes accompanied by the dyshomeostasis leading to SIDS. […] Most SIDS risk factors relate directly or indirectly to infection. This consequently elevated the position of septic or superantigenic shock and viremia in causing secondary organ failure leading to SIDS. […] Just as acidosis lowers the threshold for ventricular fibrillation and sudden cardiac arrest, it could also contribute to similarly unstable diaphragm excitation states leading to respiratory failure.

• #83 The missing link? Sudden infant death syndrome and the diaphragm – Research Outreach

  https://researchoutreach.org/articles/missing-link-sudden-infant-death-syndrome-diaphragm/

  Mr Siren points out that the prone sleeping position significantly increases the workload of the infant diaphragm compared to the supine position. […] Research shows that SIDS victims experience one or more hypoxic events over several hours to days before death that is characterised by decreased systemic oxygen levels. […] Mr Siren highlights that hyperthermia, or overheating, is also associated with SIDS even though a causal mechanism has not been established. […] Mr Siren has repeatedly argued that the diaphragm, which powers the critical respiratory pump, remains a serious blind spot in SIDS research. […] Mr Siren suggests that more research is needed to explore the potential role of the diaphragm in SIDS.

• #84

  https://ujms.net/index.php/ujms/article/view/6082

  Sudden infant death syndrome (SIDS) is the leading cause of death in infants between the ages of 1 and 12 months in developed countries. SIDS is by definition a diagnosis of exclusion, and its mechanism of action is unknown. The SIDSCritical Diaphragm Failure (CDF) hypothesis postulates that the cause of death in SIDS is respiratory failure caused by CDF. Four principal risk factors contribute to CDF in young infants: undeveloped respiratory muscles, non-lethal infections, prone resting position, and REM sleep. Even relatively minor infections can cause an acute and significant reduction in diaphragm force generation capacity that in conjunction with other risk factors can precipitate CDF. […] Understanding the underlying mechanism of SIDS may help in formulating new approaches to child care that can help to further reduce the incidence of SIDS.

• #85 SIDS – Wikipedia

  https://en.wikipedia.org/wiki/SIDS

  The most effective method of reducing the risk of SIDS is putting a child less than one-year-old on their back to sleep. Other measures include a firm mattress separate from but close to caregivers, no loose bedding, a relatively cool sleeping environment, using a pacifier, and avoiding exposure to tobacco smoke. Breastfeeding and immunization may also be preventative. Measures not shown to be useful include positioning devices and baby monitors. Evidence is not sufficient for the use of fans. Grief support for families affected by SIDS is important, as the death of the infant is unexpected, unexplained, and can cause suspicion that the infant may have been intentionally harmed. […] SIDS has a four-parameter lognormal age distribution that spares infants shortly after birth—the time of maximal risk for almost all other causes of non-trauma infant death. By definition, SIDS deaths occur under the age of one year, with the peak incidence occurring when the infant is two to four months old. This is considered a critical period because the infant’s ability to rouse from sleep is not yet mature.

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