Zatrucie tlenkiem węgla
Objawy

Zatrucie tlenkiem węgla (CO) jest poważnym stanem zagrożenia życia, wynikającym z tworzenia karboksyhemoglobiny (COHb), która wiąże się z hemoglobiną około 250 razy silniej niż tlen, prowadząc do niedotlenienia tkanek. Objawy zatrucia są niespecyficzne i zależą od stężenia CO oraz czasu ekspozycji, przy czym poziomy COHb od 10% do 30% manifestują się bólem głowy, nudnościami, zawrotami głowy, osłabieniem i zaburzeniami poznawczymi, a stężenia powyżej 50% mogą prowadzić do drgawek, śpiączki i śmierci. Ekspozycja na stężenia CO powyżej 12,800 ppm może wywołać natychmiastowe efekty fizjologiczne i zagrożenie życia w ciągu 1-3 minut. Szczególnie narażone są osoby starsze, dzieci, kobiety w ciąży oraz pacjenci z chorobami serca i układu oddechowego. Przewlekłe zatrucie niskimi stężeniami CO objawia się m.in. przewlekłymi bólami głowy, zaburzeniami pamięci i parestezjami, co utrudnia diagnostykę.

  1. Zatrucie tlenkiem węgla: objawy i progresja
    1. Mechanizm działania tlenku węgla
    2. Wczesne objawy zatrucia tlenkiem węgla
    3. Objawy umiarkowanego zatrucia tlenkiem węgla
    4. Objawy ciężkiego zatrucia tlenkiem węgla
    5. Progresja objawów w zależności od czasu i stężenia tlenku węgla
    6. Korelacja objawów z poziomem karboksyhemoglobiny
    7. Szczególne grupy ryzyka
    8. Zatrucie chroniczne tlenkiem węgla
    9. Odróżnienie zatrucia tlenkiem węgla od innych chorób
    10. Odległe następstwa zatrucia tlenkiem węgla
    11. Czynniki prognostyczne w zatruciu tlenkiem węgla
    12. Specyficzne cechy zatrucia tlenkiem węgla
    13. Progresja w czasie i wskazania do natychmiastowej interwencji
  2. Wnioski
    1. Kolejne rozdziały

Zatrucie tlenkiem węgla: objawy i progresja

Zatrucie tlenkiem węgla (CO) stanowi poważne zagrożenie dla zdrowia i życia, często określane jako „cichy zabójca” ze względu na brak możliwości wykrycia tego gazu zmysłami człowieka – jest on bezbarwny, bezwonny i bezsmakowy. Symptomy zatrucia CO mogą być niespecyficzne i często przypominają inne schorzenia, co utrudnia prawidłową diagnozę i opóźnia wdrożenie odpowiedniego leczenia.12

Mechanizm działania tlenku węgla

Tlenek węgla działa poprzez wypieranie tlenu z hemoglobiny, tworząc karboksyhemoglobinę (COHb), co prowadzi do niedotlenienia tkanek i narządów. CO wiąże się z hemoglobiną około 250 razy silniej niż tlen, co skutkuje zmniejszoną zdolnością krwi do transportowania tlenu. Jednocześnie tlenek węgla wiąże się z mioglobiną sercową z jeszcze większym powinowactwem niż z hemoglobiną, powodując depresję mięśnia sercowego i hipotensję, co dodatkowo nasila niedotlenienie tkanek.123

Wczesne objawy zatrucia tlenkiem węgla

Początkowe symptomy zatrucia CO są często niespecyficzne i mogą być mylone z objawami grypy bez gorączki, zatrucia pokarmowego lub innych chorób infekcyjnych, co znacznie utrudnia postawienie prawidłowej diagnozy.12 Do najczęstszych wczesnych objawów zatrucia tlenkiem węgla należą:

  • Ból głowy – występuje u około 58% pacjentów, często opisywany jako tępy, zlokalizowany w przedniej i bocznej części głowy12
  • Zawroty głowy – obserwowane u około 29% osób zatrutych CO1
  • Nudności – zgłaszane przez około 33% pacjentów1
  • Ogólne osłabienie i zmęczenie1
  • Duszność – może występować jako jeden z pierwszych objawów1
  • Drażliwość1

123

Objawy umiarkowanego zatrucia tlenkiem węgla

Wraz ze wzrostem stężenia karboksyhemoglobiny we krwi (około 20-30%) objawy stają się bardziej wyraźne i mogą obejmować:1

  • Nasilony ból głowy1
  • Dezorientację i zaburzenia poznawcze – problemy z koncentracją, zaburzenia osądu1
  • Ból w klatce piersiowej – szczególnie u osób z chorobą wieńcową1
  • Tachykardię – przyspieszenie akcji serca powyżej 100 uderzeń na minutę1
  • Zaburzenia koordynacji ruchowej1
  • Wymioty1
  • Osłabienie mięśniowe1

12

Objawy ciężkiego zatrucia tlenkiem węgla

Przy wysokim stężeniu karboksyhemoglobiny (powyżej 30-50%) dochodzi do ciężkiego zatrucia, które manifestuje się następującymi objawami:1

12

Zatrucie CO o wysokim stężeniu może doprowadzić do śmierci w ciągu zaledwie kilku minut do godziny od ekspozycji.123 Warto podkreślić, że stężenie CO w powietrzu wynoszące powyżej 12,800 ppm może wywołać natychmiastowe efekty fizjologiczne, utratę przytomności i zagrożenie życia już po 1-3 minutach ekspozycji.1

Progresja objawów w zależności od czasu i stężenia tlenku węgla

Objawy zatrucia CO zależą zarówno od stężenia gazu w otoczeniu, jak i od czasu ekspozycji. Poniżej przedstawiono progresję objawów w zależności od stężenia CO (wyrażonego w częściach na milion – ppm) i czasu narażenia:1

Stężenie CO (ppm) Czas ekspozycji Objawy
50 ppm 8 godzin Brak niekorzystnych efektów
200 ppm 2-3 godziny Łagodny ból głowy
400 ppm 1-2 godziny Ból głowy i nudności
800 ppm 45 minut Ból głowy, nudności i zawroty głowy
800 ppm 1 godzina Zapaść i utrata przytomności
1,600 ppm 20 minut Ból głowy, nudności i zawroty głowy
3,200 ppm 5-10 minut Ból głowy i zawroty głowy
3,200 ppm 30 minut Zapaść i utrata przytomności
6,400 ppm 1-2 minuty Ból głowy i zawroty głowy
6,400 ppm 10-15 minut Utrata przytomności i zagrożenie życia
12,800 ppm 1-3 minuty Natychmiastowe efekty fizjologiczne, utrata przytomności i zagrożenie życia

1

Jak widać, przy niskim stężeniu CO objawy mogą pojawić się dopiero po dłuższym czasie ekspozycji, natomiast wysokie stężenia mogą powodować szybki rozwój ciężkich objawów w ciągu kilku minut.12

Korelacja objawów z poziomem karboksyhemoglobiny

Objawy zatrucia tlenkiem węgla korelują z poziomem karboksyhemoglobiny (COHb) we krwi:1

  • 10-20% COHb – pojawienie się bólu głowy i nudności1
  • 20% COHb – ogólne zawroty głowy, osłabienie, trudności z koncentracją, zaburzenia osądu1
  • 30% COHb – duszność podczas wysiłku, ból w klatce piersiowej (u pacjentów z chorobą wieńcową), dezorientacja1
  • 50-70% COHb – może prowadzić do drgawek, śpiączki i śmierci1

Symptomy pojawiają się zazwyczaj przy poziomie COHb między 10% a 30%, choć należy podkreślić, że poziom COHb nie zawsze w pełni odzwierciedla stan kliniczny pacjenta.12

Szczególne grupy ryzyka

Niektóre grupy osób są szczególnie narażone na poważne skutki zatrucia tlenkiem węgla:1

  • Osoby starsze – mają większe ryzyko wystąpienia późnych powikłań neurologicznych1
  • Dzieci – zwłaszcza z astmą1
  • Kobiety w ciąży – zatrucie CO może prowadzić do poronienia, śmierci płodu lub porażenia mózgowego u dziecka12
  • Osoby z chorobami serca – już przy niższych stężeniach CO mogą doświadczać bólu w klatce piersiowej i innych objawów sercowych1
  • Osoby z anemią lub problemami oddechowymi1
  • Osoby śpiące lub po spożyciu alkoholu – mogą umrzeć na skutek zatrucia CO zanim wystąpią objawy ostrzegawcze12

Zatrucie chroniczne tlenkiem węgla

Długotrwała ekspozycja na niskie stężenia tlenku węgla może prowadzić do przewlekłego zatrucia, które charakteryzuje się odmiennymi objawami i trudnościami diagnostycznymi.12

Najczęstsze objawy przewlekłego zatrucia CO obejmują:12

  • Uporczywe bóle głowy1
  • Przewlekłe zmęczenie1
  • Zaburzenia pamięci i koncentracji1
  • Zaburzenia snu1
  • Zawroty głowy1
  • Nudności1
  • Zaburzenia słuchu1
  • Bóle brzucha i zaburzenia żołądkowo-jelitowe1
  • Nawracające infekcje1
  • Zaburzenia neurologiczne1
  • Parestezje (zaburzenia czucia)1

Przewlekłe zatrucie CO jest często mylone z chorobami grypopodobnymi, co prowadzi do opóźnienia właściwej diagnozy i leczenia.1

Odróżnienie zatrucia tlenkiem węgla od innych chorób

Ze względu na niespecyficzność objawów, zatrucie tlenkiem węgla może być mylone z wieloma innymi schorzeniami, takimi jak:1

  • Grypa – najczęstsza błędna diagnoza, jednak w zatruciu CO nie występuje gorączka12
  • Zatrucie pokarmowe1
  • Depresja lub zaburzenia lękowe1
  • Choroby serca1

Kluczowe wskazówki, które mogą pomóc w rozpoznaniu zatrucia CO w przeciwieństwie do innych chorób:

  • Poprawa stanu po opuszczeniu budynku lub przebywaniu na świeżym powietrzu12
  • Jednoczesne występowanie podobnych objawów u wielu osób przebywających w tym samym pomieszczeniu lub budynku12
  • Występowanie objawów u zwierząt domowych1
  • Brak gorączki i powiększonych węzłów chłonnych, które są typowe dla infekcji1
  • Nasilenie objawów podczas korzystania z urządzeń spalających paliwo1

Odległe następstwa zatrucia tlenkiem węgla

U znacznego odsetka osób, które przeżyły zatrucie tlenkiem węgla, mogą wystąpić odległe następstwa neurologiczne i psychologiczne. Opóźnione zespoły neurologiczne (Delayed Neurological Sequelae – DNS) pojawiają się u 15-50% pacjentów po znacznej ekspozycji na CO, zwykle w ciągu 2-40 dni od pozornego wyzdrowienia.123

Do najczęstszych odległych następstw zatrucia CO należą:12

  • Zaburzenia poznawcze – problemy z pamięcią, koncentracją, uwagą, funkcjami wykonawczymi, płynnością słowną1
  • Zaburzenia ruchowe – problemy z równowagą, sztywność, zaburzenia chodu, objawy parkinsonowskie12
  • Zaburzenia emocjonalne i behawioralne – depresja, lęk, drażliwość, zmiany osobowości12
  • Zaburzenia sercowo-naczyniowe – zwiększone ryzyko incydentów sercowych12
  • Zaburzenia zwieraczy – nietrzymanie moczu i stolca w ciężkich przypadkach1

Ryzyko wystąpienia odległych następstw neurologicznych jest wyższe u osób starszych oraz u tych, którzy utracili przytomność w wyniku zatrucia CO.12

Czynniki prognostyczne w zatruciu tlenkiem węgla

Wyniki leczenia i rokowanie pacjentów z zatruciem CO zależą od wielu czynników:1

  • Intensywność i czas ekspozycji na tlenek węgla1
  • Początkowa prezentacja kliniczna – ciężkość objawów przy przyjęciu1
  • Choroby współistniejące1
  • Wiek pacjenta – osoby starsze mają gorsze rokowanie1
  • Utrata przytomności podczas zatrucia – zwiększa ryzyko odległych następstw1
  • Niski poziom świadomości wg skali Glasgow przy przyjęciu1
  • Wysoki poziom leukocytów przy przyjęciu1
  • Podwyższony poziom troponiny T1
  • Uszkodzenie mięśnia sercowego – zwiększa ryzyko zgonu krótkoterminowego i zawału serca w przyszłości1

Warto podkreślić, że u pacjentów, którzy nadal wykazują zaburzenia funkcji poznawczych po 2 tygodniach od zatrucia, prawdopodobieństwo pełnego powrotu do zdrowia jest mniejsze.1 Ponadto, zaburzenia funkcji poznawczych mogą pojawić się ponownie nawet po okresie bezobjawowym trwającym 1-2 tygodnie.1

Specyficzne cechy zatrucia tlenkiem węgla

Istnieją pewne charakterystyczne cechy zatrucia tlenkiem węgla, które warto uwzględnić w diagnostyce różnicowej:1

  • Sezonowość – zatrucia CO występują częściej zimą, w sezonie grzewczym1
  • Typowy wiśniowy kolor skóry – klasyczny objaw zatrucia CO, częściej obserwowany jednak u osób zmarłych niż żywych1
  • Jednoczesne wystąpienie podobnych objawów u kilku osób w tym samym miejscu1
  • Poprawa po opuszczeniu budynku1
  • Związek z korzystaniem z urządzeń spalających paliwo1

Progresja w czasie i wskazania do natychmiastowej interwencji

Szybkość progresji objawów zatrucia CO zależy od stężenia gazu i czasu ekspozycji:1

  • Przy ekspozycji na niskie stężenia CO objawy mogą rozwijać się powoli, przez okres tygodni lub miesięcy1
  • Przy wysokich stężeniach CO objawy mogą pojawić się już po 5 minutach ekspozycji1

Wskazania do natychmiastowej interwencji medycznej obejmują:1

  • Utrata przytomności1
  • Drgawki1
  • Trudności z oddychaniem1
  • Dezorientacja lub inne znaczące zaburzenia świadomości1
  • Ból w klatce piersiowej1

W przypadku podejrzenia zatrucia CO, należy natychmiast opuścić pomieszczenie i udać się na świeże powietrze, a następnie wezwać pomoc medyczną.11 Szybka interwencja może zapobiec ciężkim powikłaniom i śmierci.1

Wnioski

Zatrucie tlenkiem węgla stanowi poważne zagrożenie zdrowotne, które może prowadzić do trwałych uszkodzeń neurologicznych, sercowo-naczyniowych i nawet do śmierci. Objawy zatrucia CO są często niespecyficzne i mogą być mylone z wieloma innymi schorzeniami, co utrudnia prawidłową diagnozę. Kluczowe znaczenie ma świadomość czynników ryzyka, objawów oraz możliwości zapobiegania zatruciom poprzez instalację czujników CO i regularne serwisowanie urządzeń spalających paliwo.121

Szybkie rozpoznanie i leczenie zatrucia CO ma decydujące znaczenie dla minimalizacji długoterminowych powikłań. Wszystkich pacjentów z zatruciem CO należy monitorować pod kątem opóźnionych następstw neurologicznych, które mogą pojawić się do kilku tygodni po pozornym wyzdrowieniu. U pacjentów z ciężkim zatruciem CO zaleca się wykonanie EKG i oznaczenie poziomu troponiny oraz enzymów sercowych ze względu na zwiększone ryzyko powikłań sercowo-naczyniowych.12

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  1. 09.04.2026
  2. www.leksykon.com.pl

Materiały źródłowe

  • #1 Carbon monoxide poisoning – Symptoms and causes – Mayo Clinic
    https://www.mayoclinic.org/diseases-conditions/carbon-monoxide/symptoms-causes/syc-20370642
    Carbon monoxide poisoning affects the brain and heart the most. Exposure over time might lead to symptoms that can be mistaken for those of the flu without the fever. Clearer symptoms of carbon monoxide poisoning can include: […] Symptoms related to the nervous system and brain can come on after recovery from carbon monoxide poisoning. The risk of these is higher in older people and people who lost consciousness from breathing carbon monoxide. Symptoms might include: […] Carbon monoxide poisoning can be especially dangerous for people who are asleep or have used illicit drugs, alcohol or medicines that make them very sleepy. Carbon monoxide poisoning can cause brain damage or death before anyone realizes there’s a problem.
  • #1 Carbon Monoxide: Poisoning, Treatment, Symptoms, and Prevention
    https://www.webmd.com/first-aid/carbon-monoxide-poisoning
    If you inhale too much carbon monoxide, it builds up in your bloodstream, replacing the oxygen that belongs there. When your heart, brain, or other vital organs are deprived of that oxygen, you’re in trouble. […] If this dangerous gas is getting into your system, you might: Feel short of breath, Get dizzy, Become nauseated, Get a headache, Feel confused. […] It’s critical to treat carbon monoxide poisoning quickly. Timely treatment may reverse harmful side effects. Depending on how long you were exposed and how much carbon monoxide you took in, you may have long-term health issues, such as: Breathing problems, Parkinson’s disease, Memory loss, Permanent brain damage, Heart damage. […] If you’re exposed to low levels, it can take up to two hours to show symptoms of carbon monoxide poisoning. At higher levels, the process can take about five minutes.
  • #1 NM-Tracking – Carbon Monoxide Poisoning
    https://nmtracking.doh.nm.gov/health/poisonings/CarbonMonoxidePoisoning.html
    Symptoms can feel like the flu. […] The early symptoms of CO poisoning are flulike and include: […] Headache […] Irritability […] Dizziness, poor coordination […] Confusion, impaired judgment, memory loss […] Fatigue, weakness […] Nausea, vomiting, upset stomach […] Chest pain, rapid heartbeat […] Difficult or shallow breathing (shortness of breath) […] Changes in hearing, vision, smell, taste, or touch. […] Patients who survive are likely to develop long-term neurological problems.
  • #1 Carbon monoxide poisoning – UpToDate
    https://www.uptodate.com/contents/carbon-monoxide-poisoning
    Carbon monoxide poisoning is estimated to occur in 50,000 people annually in the United States, and non-fire-related smoke inhalation is responsible for most cases. The clinical findings of CO poisoning are highly variable and largely nonspecific. Mildly or moderately CO-intoxicated patients often present with constitutional symptoms and may be misdiagnosed with acute viral syndromes. In exposure calls to United States poison centers, patients who developed symptoms reported the following: Headache: 58 percent, Nausea: 33 percent, Dizziness: 29 percent, Drowsiness: 14 percent, Vomiting: 14 percent, Cough/choking: 6 percent, Confusion: 5 percent, Shortness of breath: 5 percent, Syncope: 5 percent, Throat or eye irritation, chest pain, weakness: <5 percent. [...] CO poisoning is considered severe in patients with any of the following findings: Neurologic – Seizures, syncope, transient loss of consciousness, or coma. Metabolic – Lactic acidosis (which may be profound) from cellular hypoxia and cytochrome oxidase inhibition. Cardiovascular – Acute myocardial ischemia, myocardial injury, ventricular arrhythmias, and pulmonary edema. The syndrome of delayed neurologic sequelae (DNS) includes variable degrees of cognitive deficits, personality changes, movement disorders, and focal neurologic deficits. DNS occurs in 15 to 40 percent of patients with significant CO exposure. DNS is reported to arise 3 to 240 days after apparent recovery, generally occurring within 20 days of CO poisoning. Deficits may persist for a year or longer.
  • #1 Clinical Guidance for Carbon Monoxide Poisoning Following Disasters and Severe Weather | Carbon Monoxide Poisoning | CDC
    https://www.cdc.gov/carbon-monoxide/hcp/clinical-guidance/index.html
    The symptoms and signs of carbon monoxide poisoning are variable and nonspecific. The most common symptoms of CO poisoning are headache, dizziness, weakness, nausea, vomiting, chest pain, and altered mental status. […] Symptoms of severe CO poisoning include malaise, shortness of breath, headache, nausea, chest pain, irritability, ataxia, altered mental status, other neurologic symptoms, loss of consciousness, coma, and death; signs include tachycardia, tachypnea, hypotension, various neurologic findings including impaired memory, cognitive and sensory disturbances; metabolic acidosis, arrhythmias, myocardial ischemia or infarction, and noncardiogenic pulmonary edema, although any organ system might be involved. […] Administer 100% oxygen until the patient is symptom-free, usually about 4-5 hours. Serial neurologic exams should be performed to assess progress, and to detect the signs of developing cerebral edema.
  • #1 Carbon Monoxide Poisoning Basics | Carbon Monoxide Poisoning | CDC
    https://www.cdc.gov/carbon-monoxide/about/index.html
    The most common symptoms of CO poisoning are headache, dizziness, weakness, upset stomach, vomiting, chest pain, and confusion. CO symptoms are often described as flu-like. […] If you breathe in a lot of CO, it can make you pass out or kill you. People who are sleeping or drunk can die from CO poisoning before they have symptoms.
  • #1 Carbon Monoxide Poisoning – Injuries; Poisoning – Merck Manual Professional Edition
    https://www.merckmanuals.com/professional/injuries-poisoning/poisoning/carbon-monoxide-poisoning
    Carbon monoxide (CO) poisoning causes acute symptoms such as headache, nausea, weakness, angina, dyspnea, loss of consciousness, seizures, and coma. […] Carbon monoxide (CO) poisoning symptoms tend to correlate well with the patients peak blood carboxyhemoglobin levels. Many symptoms are nonspecific. […] Headache and nausea can begin when levels are 10 to 20%. […] Levels 20% commonly cause vague dizziness, generalized weakness, difficulty concentrating, and impaired judgment. […] Levels 30% commonly cause dyspnea during exertion, chest pain (in patients with coronary artery disease), and confusion. […] Higher levels can cause syncope, seizures, and obtundation. […] Hypotension, coma, respiratory failure, and death may occur, usually when levels are 60%. […] Patients may also have many other symptoms, including visual deficits, abdominal pain, and focal neurologic deficits. If poisoning is severe, neuropsychiatric symptoms and signs (eg, dementia, psychosis, parkinsonism, chorea, amnestic syndromes) can develop days to weeks after exposure and become permanent.
  • #1 Carbon Monoxide Poisoning Symptoms
    https://my.clevelandclinic.org/health/diseases/15663-carbon-monoxide-poisoning
    Carbon monoxide poisoning is a life-threatening complication of breathing in carbon monoxide (CO) fumes. Symptoms of carbon monoxide poisoning include nausea and shortness of breath. The most common symptoms of CO poisoning are a headache and shortness of breath. Early warning signs of carbon monoxide poisoning include a mild headache, nausea, and shortness of breath. Moderate exposure to carbon monoxide can cause the following symptoms: chest pain, dizziness and weakness, fainting (loss of consciousness), loss of muscle coordination, mental confusion, severe headache, upset stomach, nausea, and vomiting. At low levels, carbon monoxide fumes may cause symptoms that don’t take an immediate effect on your body. High levels of carbon monoxide exposure cause CO to crowd out oxygen in your bloodstream. If you breathe too much CO, organs such as your brain and heart don’t get enough oxygen. For mild carbon monoxide poisoning symptoms, you may notice they go away or reduce shortly after moving into an area with fresh air or breathing in pure oxygen through a mask. It could take up to 24 hours for CO to leave your body, so your symptoms may persist during this time. You may also experience lingering symptoms for up to two weeks after exposure to CO. Carbon monoxide poisoning is life-threatening. After only a few minutes of exposure, it can be deadly. If you catch CO poisoning in time, treatment can reverse the effects. You may experience lingering complications to your health after CO poisoning like breathing difficulties, Parkinson’s disease, memory loss, and heart abnormalities.
  • #1 Carbon-Monoxide Poisoning | Health & Human Services
    https://hhs.iowa.gov/epi-manual-guide-surveillance-investigation-and-reporting/environmental-disease/carbon-monoxide
    Carbon monoxide is harmful when breathed because it displaces oxygen in the blood and deprives the heart, brain, and other vital organs of oxygen. Large amounts of carbon monoxide can overcome a person in minutes without warning, causing loss of consciousness and suffocation. […] The most common symptoms of carbon-monoxide poisoning are headache, dizziness, weakness, nausea, vomiting, chest tightness and pain, and confusion. Sudden chest pain may occur in people with angina. Exposure to high levels of carbon monoxide can cause loss of consciousness and death. […] If a carbon-monoxide detector sounds or a person experiences symptoms that could be carbon-monoxide poisoning, the person should leave the building immediately to get fresh air and call 911. […] Taken with other symptoms of carbon-monoxide poisoning, carboxyhemoglobin levels of over 25 percent in healthy people, over 15 percent in patients with a history of heart or lung disease, and over 10 percent in pregnant women usually indicate the need for hospitalization. […] The speed and degree of recovery from carbon-monoxide poisoning depends on the length and duration of exposure to the gas. […] Although symptoms may subside in a few hours, some patients show memory problems, fatigue, confusion, and mood changes for two to four weeks after exposure.
  • #1 Carbon monoxide poisoning | nidirect
    https://www.nidirect.gov.uk/conditions/carbon-monoxide-poisoning
    The symptoms of carbon monoxide poisoning aren’t always obvious, particularly during low-level exposure. […] A tension-type headache is the most common symptom of mild carbon monoxide poisoning. […] Other symptoms include: dizziness, nausea (feeling sick) and vomiting, tiredness and confusion, stomach pain, shortness of breath and difficulty breathing. […] The symptoms can gradually get worse with long periods of exposure to carbon monoxide, leading to a delay in diagnosis. […] Breathing in high levels of carbon monoxide gas can cause more severe symptoms. […] These may include: impaired mental state and personality changes (intoxication), vertigo the feeling that you or the environment around you is spinning, ataxia loss of physical co-ordination caused by underlying damage to the brain and nervous system, breathlessness and tachycardia (a heart rate of more than 100 beats per minute), chest pain caused by angina or a heart attack, seizures an uncontrollable burst of electrical activity in the brain that causes muscle spasms, loss of consciousness in cases where there are very high levels of carbon monoxide, death may occur within minutes. […] Carbon monoxide poisoning can also cause long-term health problems if you’re exposed to low doses over a long period of time.
  • #1 Carbon monoxide poisoning – UF Health
    https://ufhealth.org/conditions-and-treatments/carbon-monoxide-poisoning
    When you breathe in carbon monoxide, the poison replaces the oxygen in your bloodstream. Your heart, brain, and body then become starved of oxygen. […] Symptoms of carbon monoxide poisoning may include: […] Breathing problems, including no breathing, shortness of breath, or rapid breathing […] Chest pain (may occur suddenly in people with angina) […] Coma […] Confusion […] Convulsions […] Dizziness […] Drowsiness […] Fainting […] Fatigue […] General weakness and achiness […] Headache […] Hyperactivity […] Impaired judgment […] Irritability […] Low blood pressure […] Muscle weakness […] Rapid or abnormal heartbeat […] Shock […] Nausea and vomiting […] Unconsciousness. […] Since many of these symptoms can occur with viral illnesses, carbon monoxide poisoning is often confused with these conditions. This can lead to a delay in getting help.
  • #1 Carbon monoxide poisoning
    https://www2.hse.ie/conditions/carbon-monoxide-poisoning/
    The symptoms of carbon monoxide poisoning are not always obvious, particularly in low-level exposure. […] The symptoms of exposure to low levels of carbon monoxide can be similar to food poisoning and flu. Low-level exposure symptoms include: headache, dizziness, nausea (feeling sick) and vomiting, tiredness and confusion, stomach pain, shortness of breath and difficulty breathing. […] The longer you inhale the gas, the worse your symptoms will be. You may lose balance, vision, memory or consciousness. This can happen within 2 hours if there’s a lot of carbon monoxide in the air. […] Long-term exposure to low levels of carbon monoxide can cause neurological symptoms. This means you may have difficulty thinking and experience regular emotional changes. You might become easily irritated, depressed or make impulsive, irrational decisions.
  • #1 Carbon monoxide poisoning
    https://www2.hse.ie/conditions/carbon-monoxide-poisoning/
    High-level exposure symptoms include: impaired mental state and personality changes (intoxication), feeling that you or your surroundings are spinning (vertigo), loss of coordination (ataxia), shortness of breath, fast heart rate, chest pain, muscle spasms (seizures), loss of consciousness. […] A person can die within minutes when there are very high levels of carbon monoxide. […] How long it will take to recover from carbon monoxide poisoning varies from person to person. It depends on the amount of exposure and how long you have been exposed to it.
  • #1 Carbon Monoxide Poisoning | Cedars-Sinai
    https://www.cedars-sinai.org/health-library/diseases-and-conditions/c/carbon-monoxide-poisoning.html
    These are the most common symptoms of CO poisoning: Headache, Dizziness, Weakness, Nausea and vomiting, Rapid heartbeat, Shortness of breath, Seizures, Chest pain, Cardiac arrest, Loss of hearing, Blurry vision, Disorientation, Loss of consciousness or coma, Respiratory failure, Death. […] Symptoms of CO poisoning include headache, dizziness, weakness, nausea and vomiting, rapid heartbeat, shortness of breath, seizures, chest pain, disorientation, and loss of consciousness.
  • #1 Carbon monoxide poisoning – Wikipedia
    https://en.wikipedia.org/wiki/Carbon_monoxide_poisoning
    Symptoms are often described as „flu-like” and commonly include headache, dizziness, weakness, vomiting, chest pain, and confusion. […] Large exposures can result in loss of consciousness, arrhythmias, seizures, or death. […] The initial symptoms of acute carbon monoxide poisoning include headache, nausea, malaise, and fatigue. […] Increasing exposure produces cardiac abnormalities including fast heart rate, low blood pressure, and cardiac arrhythmia; central nervous system symptoms include delirium, hallucinations, dizziness, unsteady gait, confusion, seizures, central nervous system depression, unconsciousness, respiratory arrest, and death. […] One of the major concerns following acute carbon monoxide poisoning is the severe delayed neurological manifestations that may occur. […] Chronic exposure to relatively low levels of carbon monoxide may cause persistent headaches, lightheadedness, depression, confusion, memory loss, nausea, hearing disorders and vomiting.
  • #1 Carbon Monoxide Alarms | Superior, WI – Official Website
    https://www.superiorwi.gov/1089/Carbon-Monoxide-Alarms
    3,200 ppm: Headache, nausea, and dizziness after 5-10 minutes; collapse and unconsciousness after 30 minutes of exposure. […] 6,400 ppm: Headache and dizziness after 1-2 minutes; unconsciousness and danger of death after 10-15 minutes of exposure. […] 12,800 ppm: Immediate physiological effects, unconsciousness and danger of death after 1-3 minutes of exposure.
  • #1 Carbon Monoxide Alarms | Superior, WI – Official Website
    https://www.superiorwi.gov/1089/Carbon-Monoxide-Alarms
    CO enters the body through breathing. CO poisoning can be confused with flu symptoms, food poisoning and other illnesses. Some symptoms include shortness of breath, nausea, dizziness, light headedness or headaches. High levels of CO can be fatal, causing death within minutes. The concentration of CO, measured in parts per million (ppm) is a determining factor in the symptoms for an average, healthy adult. […] 50 ppm: No adverse effects with 8 hours of exposure. […] 200 ppm: Mild headache after 2-3 hours of exposure. […] 400 ppm: Headache and nausea after 1-2 hours of exposure. […] 800 ppm: Headache, nausea, and dizziness after 45 minutes; collapse and unconsciousness after 1 hour of exposure. […] 1,000 ppm: Loss of consciousness after 1 hour of exposure. […] 1,600 ppm: Headache, nausea, and dizziness after 20 minutes of exposure.
  • #1 Carbon Monoxide Poisoning Symptoms: Causes and Management
    https://cpraedcourse.com/blog/carbon-monoxide-poisoning/
    Carbon monoxide poisoning is a serious condition that can happen without warning. This invisible, tasteless, and odorless gas can be deadly if inhaled in large amounts. Carbon monoxide poisoning symptoms often appear suddenly and include headaches, dizziness, nausea, confusion, and in severe cases, unconsciousness. […] The symptoms of carbon monoxide poisoning depend on how much gas is inhaled and for how long. Once inhaled, carbon monoxide enters the bloodstream. It binds to hemoglobin hemoglobin, the protein molecule in blood that carries oxygen, and creates carboxyhemoglobin (COHgb). This blocks oxygen from reaching the body’s cells. Without oxygen, cells and organs cannot function properly. Some of the early and advanced carbon monoxide poisoning symptoms are discussed as follows: […] A mild, dull headache is one of the first signs of carbon monoxide poisoning exposure. The pain may feel persistent and doesn’t go away with rest.
  • #1 Carbon Monoxide Toxicity: Practice Essentials, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/819987-overview
    Carbon monoxide (CO) is a colorless, odorless gas produced by incomplete combustion of carbonaceous material. Clinical presentation in patients with CO poisoning ranges from headache and dizziness to coma and death. […] CO binds to cardiac myoglobin with an even greater affinity than to hemoglobin; the resulting myocardial depression and hypotension exacerbates the tissue hypoxia. […] HbCO levels often do not reflect the clinical picture, yet symptoms typically begin with headaches at levels around 10%. Levels of 50-70% may result in seizure, coma, and fatality. […] A study by Ahn et al using the National Health Insurance Service (NHIS) of Korea database found evidence for an association between CO poisoning and the development of internal malignancies. […] An analysis of 331 pediatric patients with CO poisoning seen at a single-site emergency department found risk factors associated with severe disease course were a low Glasgow Coma Scale score, high leukocyte count, and high troponin T levels at presentation. […] Patients with myocardial injury from CO poisoning are at higher risk for short-term mortality, and survivors are at increased risk for neurocognitive sequelae and future myocardial infarction. […] Survivors of intentional CO poisoning are at extreme risk for subsequent completion of suicide.
  • #1 Carbon monoxide poisoning
    https://dermnetnz.org/topics/carbon-monoxide-poisoning
    Symptoms of carbon monoxide poisoning occur at carboxyhaemoglobin levels of between 10% and 30%. […] Mild effects of carbon monoxide poisoning include headache, nausea, fatigue, vomiting, and chest pains. […] Severe symptoms of carbon monoxide poisoning, occurring after long or extreme exposure to the gas, include respiratory failure, cardiac arrhythmia, angina, impaired memory, and loss of consciousness. […] Victims of carbon monoxide poisoning may have continued neurological aftereffects and psychomotor impairments, even long after treatment. […] Depending on the concentration and length of exposure, symptoms can include hypotension, impaired memory, personality change, delayed psychomotor response, Parkinson disease-like symptoms, seizures, and coma or semi-coma. […] The severity of the symptoms of carbon monoxide poisoning is dependent on a number of factors, such as duration of exposure to the gas source, concentration of carbon monoxide upon exposure, the metabolic rate of the patient, time elapsed after exposure, and response to oxygen therapy treatment. […] In cases of severe poisoning, the patient may experience delayed neurological and psychomotor symptoms, such as personality changes, disorientation and gait disturbances, loss of memory, and seizures.
  • #1 How to prevent carbon monoxide poisoning in your home | VCU Healthic_closeGroup
    https://www.vcuhealth.org/news/how-to-prevent-carbon-monoxide-poisoning-in-your-home/
    Common symptoms include headaches, dizziness, nausea, weakness, and fast heartbeat. […] While severe cases tend to experience vomiting, coma, confusion, loss of consciousness, a heart attack, and even death. […] Typically, the severity of symptoms is linked to the amount of gas exposure. […] In some instances, it takes up to 2 hours for symptoms to occur or as little as 5 minutes. […] Populations who pose a greater risk of getting sick from carbon monoxide are: Smaller children, especially with asthma; People who smoke tobacco regularly; People who are pregnant; might pose a risk of miscarriage and health problems to their fetus; Older adults; People with chronic illnesses such as heart disease, anemia, or breathing problems. […] If someone has collapsed, has difficulty breathing or is unconscious, immediately call 911. […] These could be signs of severe carbon monoxide poisoning, and immediate medical attention is needed to potentially save a life.
  • #1 Carbon Monoxide Poisoning – Harvard Health
    https://www.health.harvard.edu/a_to_z/carbon-monoxide-poisoning-a-to-z
    The prognosis depends on the severity of carbon monoxide poisoning. Among people with severe symptoms, as many as two out of three people may have long-term complications, especially neurological problems. In people with mild to moderate symptoms, as many as one in five can develop lasting neurological problems. Neurological problems range from mild personality changes to severe intellectual impairment, blindness and deafness. In pregnant women, poisoning can cause fetal death or cerebral palsy in the child.
  • #1
    https://pmc.ncbi.nlm.nih.gov/articles/PMC8527620/
    Objective: Although much is known about acute carbon monoxide (CO) poisoning, little is known about chronic CO poisoning. Chronic CO poisoning is often diagnosed based on the patients living environment and medical history. Herein, we report the case of an older patient who presented with repeated unconsciousness due to chronic CO poisoning. […] Symptoms of chronic CO poisoning include chronic fatigue, memory problems, work difficulties, sleep disorders, dizziness, neurological disorders, paresthesia, recurrent infections, abdominal pain, and diarrhea. In addition, prolonged exposure to low-level CO has also been associated with cardiac hypertrophy and polycythemia, which may be an effect of chronic hypoxia. […] Clinical effects, such as loss of consciousness, are related to a combination of the level of exposure and duration. Thus, after multiple exposures, attention from medical professionals is needed because of hypoxemia, which results in symptoms such as headache and impaired consciousness, as in the present case.
  • #1 Recover from Carbon Monoxide Poisoning’s Long-Term Effects
    https://www.cognitivefxusa.com/blog/carbon-monoxide-poisoning-long-term-effects
    Increasing CO exposure may lead to cardiac problems, including fast heart rate, low blood pressure, chest pain, and cardiac arrhythmia. Patients may also experience short-term symptoms affecting their central nervous system, such as delirium, hallucinations, drowsiness, dizziness, unsteady gait, confusion, seizures, and central nervous system depression. Ultimately, severe poisoning can cause loss of consciousness, respiratory arrest, and death. […] The most common symptoms of chronic CO poisoning include persistent headaches, lightheadedness, fatigue, memory problems, nausea, hearing disorders, sleep disorders, abdominal pain, diarrhea, and vomiting. Each time a patient is exposed to CO, they will develop one or more of these symptoms. […] Irrespective of whether patients were exposed to acute or chronic CO poisoning, they can develop persistent symptoms even after the source of CO is removed. These symptoms occur in up to 50% of all patients who sustained toxic levels of CO.
  • #1
    https://pmc.ncbi.nlm.nih.gov/articles/PMC8527620/
    Each time a patient is exposed to CO, if the concentration and duration of exposure are high enough, they will repeatedly develop symptoms associated with exposure to the poison. However, because chronic CO poisoning often presents nonspecific symptoms, it is difficult to recognize and frequently mistaken for a flu-like disease.
  • #1 Symptoms and Common Misdiagnoses of Carbon Monoxide Poisoning – Wyatt Law Firm, PLLC
    https://www.wyattlawfirm.com/symptoms-and-common-misdiagnoses-of-carbon-monoxide-poisoning/
    Symptoms and Common Misdiagnoses of Carbon Monoxide Poisoning […] Both acute and chronic CO exposures lead to a range of symptoms: Headaches (dull, especially at the front and sides of the head) […] Shortness of breath […] Nausea and vomiting […] Loss of consciousness […] Coma. […] Oxygen treatments can significantly reduce the damage caused by CO poisoning, but they must be administered as soon as possible after the exposure. Unfortunately, oxygen treatment is often delayed or forgone due to misdiagnoses by medical personnel. […] Common misdiagnoses for CO poisoning’s vague symptoms include: Influenza […] Depression or anxiety […] Heart disease, angina, or cardiac arrhythmias. […] By far, the flu is the number one misdiagnosis for CO poisoning. However, carbon monoxide poisoning victims who experience flu-like symptoms such as headaches, fatigue, nausea, and vomiting do not experience fevers. Pay attention to flu-like symptoms, especially if multiple people (or even pets) around you experience them at the same time. […] If you suspect you have carbon monoxide poisoning, seek medical evaluation immediately.
  • #1 Content – Health Encyclopedia – University of Rochester Medical Center
    https://www.urmc.rochester.edu/Encyclopedia/Content?ContentTypeID=90&ContentID=P02835
    Symptoms can occur a bit differently in each child. They can include: […] Symptoms can include headache, dizziness, nausea, and vomiting. […] It may be CO poisoning if symptoms occur at home and not at school. Or it may be CO poisoning if more than one person in the home has these symptoms. […] The symptoms of carbon monoxide poisoning can be like other health conditions, such as the flu and food poisoning. Make sure your child sees their health care provider for a diagnosis. […] A child may have long-lasting (permanent) damage to the brain or heart. This depends on the amount of CO exposure. Severe carbon monoxide poisoning can cause nervous system or psychiatric symptoms days or weeks later. This is known as delayed neuropsychiatric syndrome. Follow-up should include a repeat medical and neurological exam in 2 weeks. In some cases, CO poisoning can lead to death.
  • #1 Carbon monoxide poisoning
    https://www.nhs.uk/conditions/carbon-monoxide-poisoning/
    Symptoms of carbon monoxide poisoning include: headache, dizziness, feeling sick or being sick, feeling weak, confusion, chest and muscle pain, shortness of breath. […] The symptoms may come and go. They may get worse when you spend time in an affected room or building and get better when you leave or go outside. […] You may need to be checked in hospital if you have carbon monoxide poisoning, especially if: you have symptoms of severe carbon monoxide poisoning (for example, you have difficulty breathing or you lost consciousness).
  • #1 Carbon Monoxide Poisoning: Causes, Symptoms, Treatment
    https://patient.info/chest-lungs/carbon-monoxide-poisoning
    Carbon monoxide poisoning symptoms include: […] Milder symptoms of carbon monoxide poisoning include: Headache. Feeling sick (nausea) or being sick. Dizziness. Flushing. Feeling weak. Abdominal pain. Difficulty in concentrating. […] These can be mistaken for flu or tummy bugs, with occasionally fatal consequences. With vague symptoms, it is more likely that carbon monoxide poisoning is the cause if: Other people in the house have the same symptoms; or Your symptoms are worse at home and better when you’re outside. […] Exposure to low levels of carbon monoxide over long periods can result in developing any of these symptoms along with: Memory problems. Flu-like symptoms. Tiredness. Loss of vision. Problems with sleep, smell or balance. Anxiety. […] More severe cases of carbon monoxide poisoning can lead to: Palpitations. Breathlessness. Personality change. Confusion. Heart attack. Convulsions and loss of consciousness. […] Carbon monoxide poisoning can cause serious symptoms weeks after apparently recovering from an acute poisoning episode. Confusion, personality changes and symptoms similar to those of Parkinson’s disease can all occur.
  • #1 Carbon Monoxide (CO) Poisoning in Your Home – MN Dept. of Health
    https://www.health.state.mn.us/communities/environment/air/toxins/index.html
    Identifying CO poisoning can be difficult because the symptoms are similar to the flu. CO is often called the silent killer because people will ignore early signs and eventually lose consciousness and be unable to escape to safety. […] For most people, the first signs of exposure include mild headache and breathlessness with moderate exercise. Continued exposure can lead to more severe headaches, dizziness, fatigue and nausea. Eventually symptoms may progress to confusion, irritability, impaired judgment and coordination, and loss of consciousness. […] You can tell the difference between CO poisoning and the flu with these clues: You feel better when you are away from home. Everyone is the home is sick at the same time (the flu virus usually spreads from person to person). The family members most affected spend the most time in the house. Indoor pets appear ill. You dont have a fever or body aches, and you dont have swollen lymph nodes that are common with the flu and some other infections. Symptoms appear or seem to get worse when using fuel-burning equipment.
  • #1 Recover from Carbon Monoxide Poisoning’s Long-Term Effects
    https://www.cognitivefxusa.com/blog/carbon-monoxide-poisoning-long-term-effects
    Similarly to what happened to Nate, up to 30% of patients exhibit some degree of cognitive decline after CO poisoning. This ranges from subtle impairments that most patients don’t even notice to a significant reduction in intellectual function or even dementia. It’s common for patients to experience deficits in attention, concentration, memory, executive function, and verbal fluency. […] Physical and movement disorders can affect about 13% of patients. Symptoms include balance issues, rigidity, and shuffling gait. Urinary and fecal incontinence is also a common problem in severe cases. […] Finally, emotional and behavioral disturbances are less common and can be difficult to distinguish from pre-poisoning disorders, particularly in cases of suicide attempts by CO poisoning. Personality changes may occur, and studies have described patients suffering from depression, anxiety, and irritability several years after CO poisoning.
  • #1 Clinical Guidance for Carbon Monoxide Poisoning Following Disasters and Severe Weather | Carbon Monoxide Poisoning | CDC
    https://www.cdc.gov/carbon-monoxide/hcp/clinical-guidance/index.html
    Cardiac injury during poisoning increases risk of mortality within 10 years following poisoning, so in patients with severe CO poisoning, it may be important to perform an EKG and measurement of troponin and cardiac enzymes during the evaluation for CO poisoning. […] All discharged patients should be warned of possible delayed neurological complications and given instructions on what to do if these occur. Follow-up should include a repeat medical and neurological exam in 2 weeks.
  • #1 Carbon Monoxide Toxicity – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK430740/
    Mental status changes such as confusion, altered level of consciousness, disorientation, and memory loss may occur. […] The prognosis for patients with significant carbon monoxide exposure varies based on the intensity of exposure, initial clinical presentation, and comorbidities. Severe exposures may result in long-term neurologic and psychiatric sequelae. […] Persistent symptoms can significantly impair a patient’s quality of life and daily functioning. Early recognition and appropriate treatment are critical to reducing the risk of these long-term sequelae.
  • #1 Carbon monoxide poisoning – UF Health
    https://ufhealth.org/conditions-and-treatments/carbon-monoxide-poisoning
    Carbon monoxide poisoning can cause death. For those who survive, recovery is slow. How well a person does depends on the amount and length of exposure to the carbon monoxide. Permanent brain damage may occur. […] If the person still has impaired mental ability after 2 weeks, the chance of a complete recovery is worse. Impaired mental ability can reappear after a person has been symptom-free for 1 to 2 weeks.
  • #1 7 Symptoms of Carbon Monoxide Poisoning | Family Handyman
    https://www.familyhandyman.com/article/symptoms-of-carbon-monoxide-poisoning/?srsltid=AfmBOoqbD7agbUUp8ew6znhpLAbKQ6ms5fpKr1B6nZHT-9Bl6R22JLCg
    Headache is one of the most common symptoms, similar to what you would experience with the flu, Smeltzer says. Nonspecific flu-like symptoms make diagnosing CO poisoning difficult, Smeltzer says. One clue its CO poisoning vs. a virus? Symptoms will clear up after you leave the environment with high levels of CO, Smeltzer says. […] Dizziness is another common symptom of CO poisoning, and potential sources include basement water heaters and improperly vented gas dryers. […] At low levels, a person might be fatigued, Smeltzer says. Unfortunately, fatigue can signal multiple ailments, from anemia and sleep disorders to thyroid problems and heart disease. […] Queasiness or feeling sick to your stomach can be another symptom of CO poisoning. […] More extreme cases of CO poisoning can involve confusion and disorientation caused by lack of oxygen to the brain, aka cerebral hypoxia. […] Chest pain can be a sign of heart attack, acid reflux disease, asthma and yes, CO poisoning. […] When CO exposure reaches the highest levels, loss of consciousness can occur.
  • #1 Carbon Monoxide Toxicity Clinical Presentation: History, Physical Examination
    https://emedicine.medscape.com/article/819987-clinical
    Carbon monoxide (CO) toxicity is often misdiagnosed because of the vagueness and broad spectrum of complaints; symptoms often are attributed to a viral illness. Specifically inquiring about possible exposures when considering the diagnosis is important. […] For nonfatal, nonintentional, nonfire-related exposures, the most common symptom has been reported to be headache (37%), followed by dizziness (18%) and nausea (17%). […] However, any of the following symptoms should alert suspicion in the winter months, especially when the patient has a history compatible with CO exposure and when more than one patient in a group or household presents with similar complaints: Malaise, flulike symptoms, fatigue; Dyspnea on exertion; Chest pain, palpitations; Lethargy; Confusion; Depression; Impulsiveness; Distractibility; Hallucination, confabulation; Agitation; Nausea, vomiting, diarrhea; Abdominal pain; Headache, drowsiness; Dizziness, weakness, confusion; Visual disturbance, syncope, seizure; Fecal and urinary incontinence; Memory and gait disturbances; Bizarre neurologic symptoms, coma.
  • #1 Carbon monoxide poisoning – Wikipedia
    https://en.wikipedia.org/wiki/Carbon_monoxide_poisoning
    It is unknown whether low-level chronic exposure may cause permanent neurological damage. […] However, one case noted permanent memory loss and learning problems after a three-year exposure to relatively low levels of carbon monoxide from a faulty furnace. […] One classic sign of carbon monoxide poisoning is more often seen in the dead rather than the living people have been described as looking red-cheeked and healthy.
  • #1 Carbon Monoxide Poisoning | Mass General Brigham
    https://www.massgeneralbrigham.org/en/about/newsroom/articles/carbon-monoxide-poisoning
    The classic story would be a family going to bed at night, all feeling a headache at the same time, Dr. Armand says. Any time you have multiple people in the same location having similar symptoms, the first thought we have is that theres something in the air or in the water. If multiple people in the same place have headaches, nausea, and vomiting, then its often carbon monoxide. […] Once youre outside, if symptoms are severe or last for 30 minutes, go to the hospital.
  • #1 Symptoms of carbon monoxide poisoning | HealthPartners Blog
    https://www.healthpartners.com/blog/carbon-monoxide-poisoning/
    Early signs and symptoms of carbon monoxide poisoning include mild or moderate headache, shortness of breath, dizziness, weakness, nausea and vomiting, rapid heartbeat, and sore throat. […] Signs and symptoms of moderate cases of carbon monoxide poisoning include severe headache, chest pain, seizures, and loss of coordination (ataxia). […] Signs and symptoms of severe carbon monoxide poisoning include loss of consciousness, respiratory failure, and coma. […] If you think youre experiencing any symptoms of carbon monoxide poisoning, call 911 or go to the nearest hospital emergency room. […] The amount of time it takes for CO to affect you depends on the amount of the gas youre exposed to. If youre exposed to small amounts of carbon monoxide over a period of time, it can take a few weeks to feel the effects. If youre exposed to a large amount, it can be deadly within minutes of exposure.
  • #1 Symptoms of carbon monoxide poisoning | HealthPartners Blog
    https://www.healthpartners.com/blog/carbon-monoxide-poisoning/
    If you suspect carbon monoxide poisoning, the first step is to get away from the source of the carbon monoxide as soon as safely possible. Then seek medical attention right away call 911 or go to the nearest emergency room. […] Carbon monoxide poisoning is treated by giving you pure oxygen to breathe. This will help offset the CO buildup in your body. Mild CO poisoning symptoms may go away by simply moving outside away from the source, or by using an oxygen mask. […] It can take up to 24 hours for CO to leave your body, so you may experience symptoms during that time, and depending on the severity of your exposure, you may also experience symptoms for a longer amount of time. […] If you experience CO poisoning, you may have lingering effects that can be long-term, and it can take a while to recover. Some symptoms may show up right away while some are slower to appear, including cognitive issues, such as difficulty concentrating and problems with memory, changes to mental and psychological functions, like depression and irritability, and problems with brain, nerve and spinal cord function.
  • #1 Carbon monoxide poisoning – Diagnosis and treatment – Mayo Clinic
    https://www.mayoclinic.org/diseases-conditions/carbon-monoxide/diagnosis-treatment/drc-20370646
    Get into fresh air right away. Call 911 or emergency medical help if you or someone with you has symptoms of carbon monoxide poisoning. These include headache, dizziness, nausea, shortness of breath, weakness and confusion. […] If you or someone you’re with has symptoms of carbon monoxide poisoning, get into fresh air immediately and call 911 or emergency medical help. Symptoms can include headache, dizziness, nausea, shortness of breath, weakness and confusion.
  • #1 Carbon Monoxide Poisoning: Symptoms, Treatment, Prevention, Travel Tips
    https://www.everydayhealth.com/healthy-living/carbon-monoxide-poisoning/
    Prompt recognition of symptoms and immediate treatment are crucial because death can happen in just a few minutes. […] What are the symptoms of carbon monoxide poisoning? Common symptoms include nausea, headache, dizziness, chest pain, confusion, and fainting. Severe cases can lead to loss of consciousness or even death.
  • #1 Tracking Carbon Monoxide Poisoning | New Hampshire Department of Health and Human Services
    https://www.dhhs.nh.gov/programs-services/environmental-health-and-you/environmental-public-health-tracking/tracking-carbon
    Carbon monoxide poisoning occurs by breathing in too much carbon monoxide. Inhaled carbon monoxide enters the lungs where it replaces oxygen in red blood cells and is then carried throughout the body. Symptoms of CO poisoning are similar to those experienced when there is too little oxygen in the air. […] Symptoms can vary from mild (fatigue, headache, dizziness, nausea) to severe (loss of consciousness and death). The level of exposure influences the damage done to an individual. Mental abilities can be impaired and permanent brain damage can occur. […] Most people who survive CO poisoning recover fully. Studies have found, however, that 10 to 40 percent of survivors of severe carbon monoxide poisoning may have long-term health problems as a result of their exposure. Even minor and moderate cases of carbon monoxide poisoning indicate an underlying CO hazard in the patient’s home, work or recreational environment.
  • #2 Carbon Monoxide Poisoning Symptoms
    https://my.clevelandclinic.org/health/diseases/15663-carbon-monoxide-poisoning
    Carbon monoxide poisoning is a life-threatening complication of breathing in carbon monoxide (CO) fumes. Symptoms of carbon monoxide poisoning include nausea and shortness of breath. The most common symptoms of CO poisoning are a headache and shortness of breath. Early warning signs of carbon monoxide poisoning include a mild headache, nausea, and shortness of breath. Moderate exposure to carbon monoxide can cause the following symptoms: chest pain, dizziness and weakness, fainting (loss of consciousness), loss of muscle coordination, mental confusion, severe headache, upset stomach, nausea, and vomiting. At low levels, carbon monoxide fumes may cause symptoms that don’t take an immediate effect on your body. High levels of carbon monoxide exposure cause CO to crowd out oxygen in your bloodstream. If you breathe too much CO, organs such as your brain and heart don’t get enough oxygen. For mild carbon monoxide poisoning symptoms, you may notice they go away or reduce shortly after moving into an area with fresh air or breathing in pure oxygen through a mask. It could take up to 24 hours for CO to leave your body, so your symptoms may persist during this time. You may also experience lingering symptoms for up to two weeks after exposure to CO. Carbon monoxide poisoning is life-threatening. After only a few minutes of exposure, it can be deadly. If you catch CO poisoning in time, treatment can reverse the effects. You may experience lingering complications to your health after CO poisoning like breathing difficulties, Parkinson’s disease, memory loss, and heart abnormalities.
  • #2 Carbon monoxide poisoning – UF Health
    https://ufhealth.org/conditions-and-treatments/carbon-monoxide-poisoning
    When you breathe in carbon monoxide, the poison replaces the oxygen in your bloodstream. Your heart, brain, and body then become starved of oxygen. […] Symptoms of carbon monoxide poisoning may include: […] Breathing problems, including no breathing, shortness of breath, or rapid breathing […] Chest pain (may occur suddenly in people with angina) […] Coma […] Confusion […] Convulsions […] Dizziness […] Drowsiness […] Fainting […] Fatigue […] General weakness and achiness […] Headache […] Hyperactivity […] Impaired judgment […] Irritability […] Low blood pressure […] Muscle weakness […] Rapid or abnormal heartbeat […] Shock […] Nausea and vomiting […] Unconsciousness. […] Since many of these symptoms can occur with viral illnesses, carbon monoxide poisoning is often confused with these conditions. This can lead to a delay in getting help.
  • #2 Carbon Monoxide (CO) Poisoning in Your Home – MN Dept. of Health
    https://www.health.state.mn.us/communities/environment/air/toxins/index.html
    Identifying CO poisoning can be difficult because the symptoms are similar to the flu. CO is often called the silent killer because people will ignore early signs and eventually lose consciousness and be unable to escape to safety. […] For most people, the first signs of exposure include mild headache and breathlessness with moderate exercise. Continued exposure can lead to more severe headaches, dizziness, fatigue and nausea. Eventually symptoms may progress to confusion, irritability, impaired judgment and coordination, and loss of consciousness. […] You can tell the difference between CO poisoning and the flu with these clues: You feel better when you are away from home. Everyone is the home is sick at the same time (the flu virus usually spreads from person to person). The family members most affected spend the most time in the house. Indoor pets appear ill. You dont have a fever or body aches, and you dont have swollen lymph nodes that are common with the flu and some other infections. Symptoms appear or seem to get worse when using fuel-burning equipment.
  • #2 Symptoms and Common Misdiagnoses of Carbon Monoxide Poisoning – Wyatt Law Firm, PLLC
    https://www.wyattlawfirm.com/symptoms-and-common-misdiagnoses-of-carbon-monoxide-poisoning/
    Symptoms and Common Misdiagnoses of Carbon Monoxide Poisoning […] Both acute and chronic CO exposures lead to a range of symptoms: Headaches (dull, especially at the front and sides of the head) […] Shortness of breath […] Nausea and vomiting […] Loss of consciousness […] Coma. […] Oxygen treatments can significantly reduce the damage caused by CO poisoning, but they must be administered as soon as possible after the exposure. Unfortunately, oxygen treatment is often delayed or forgone due to misdiagnoses by medical personnel. […] Common misdiagnoses for CO poisoning’s vague symptoms include: Influenza […] Depression or anxiety […] Heart disease, angina, or cardiac arrhythmias. […] By far, the flu is the number one misdiagnosis for CO poisoning. However, carbon monoxide poisoning victims who experience flu-like symptoms such as headaches, fatigue, nausea, and vomiting do not experience fevers. Pay attention to flu-like symptoms, especially if multiple people (or even pets) around you experience them at the same time. […] If you suspect you have carbon monoxide poisoning, seek medical evaluation immediately.
  • #2 Symptoms of carbon monoxide poisoning | HealthPartners Blog
    https://www.healthpartners.com/blog/carbon-monoxide-poisoning/
    Early signs and symptoms of carbon monoxide poisoning include mild or moderate headache, shortness of breath, dizziness, weakness, nausea and vomiting, rapid heartbeat, and sore throat. […] Signs and symptoms of moderate cases of carbon monoxide poisoning include severe headache, chest pain, seizures, and loss of coordination (ataxia). […] Signs and symptoms of severe carbon monoxide poisoning include loss of consciousness, respiratory failure, and coma. […] If you think youre experiencing any symptoms of carbon monoxide poisoning, call 911 or go to the nearest hospital emergency room. […] The amount of time it takes for CO to affect you depends on the amount of the gas youre exposed to. If youre exposed to small amounts of carbon monoxide over a period of time, it can take a few weeks to feel the effects. If youre exposed to a large amount, it can be deadly within minutes of exposure.
  • #2 12 Signs There Is Carbon Monoxide in Your House: Symptoms & Causes
    https://www.medicinenet.com/12_signs_there_is_carbon_monoxide_in_your_house/article.htm
    Symptoms of carbon monoxide poisoning vary depending on the severity of exposure and the overall health of the person. […] Symptoms of carbon monoxide poisoning vary depending on the severity of exposure and the overall health of the person. […] In general, carbon monoxide poisoning symptoms may include: Headache, Shortness of breath or rapid breathing, Dizziness, Confusion, Chest pain or tightness, Weakness, Feeling sick, Stomach pain, Nausea and vomiting, Drowsiness, Fainting, Clumsiness, Difficulty walking, Impaired vision, Seizure, Coma. […] If the carbon monoxide concentration in the air is much higher, signs of poisoning may occur within 1-2 hours. […] A very high carbon monoxide concentration can even kill an exposed individual within 5 minutes.
  • #2 Carbon Monoxide Toxicity: Practice Essentials, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/819987-overview
    Carbon monoxide (CO) is a colorless, odorless gas produced by incomplete combustion of carbonaceous material. Clinical presentation in patients with CO poisoning ranges from headache and dizziness to coma and death. […] CO binds to cardiac myoglobin with an even greater affinity than to hemoglobin; the resulting myocardial depression and hypotension exacerbates the tissue hypoxia. […] HbCO levels often do not reflect the clinical picture, yet symptoms typically begin with headaches at levels around 10%. Levels of 50-70% may result in seizure, coma, and fatality. […] A study by Ahn et al using the National Health Insurance Service (NHIS) of Korea database found evidence for an association between CO poisoning and the development of internal malignancies. […] An analysis of 331 pediatric patients with CO poisoning seen at a single-site emergency department found risk factors associated with severe disease course were a low Glasgow Coma Scale score, high leukocyte count, and high troponin T levels at presentation. […] Patients with myocardial injury from CO poisoning are at higher risk for short-term mortality, and survivors are at increased risk for neurocognitive sequelae and future myocardial infarction. […] Survivors of intentional CO poisoning are at extreme risk for subsequent completion of suicide.
  • #2 How to prevent carbon monoxide poisoning in your home | VCU Healthic_closeGroup
    https://www.vcuhealth.org/news/how-to-prevent-carbon-monoxide-poisoning-in-your-home/
    Common symptoms include headaches, dizziness, nausea, weakness, and fast heartbeat. […] While severe cases tend to experience vomiting, coma, confusion, loss of consciousness, a heart attack, and even death. […] Typically, the severity of symptoms is linked to the amount of gas exposure. […] In some instances, it takes up to 2 hours for symptoms to occur or as little as 5 minutes. […] Populations who pose a greater risk of getting sick from carbon monoxide are: Smaller children, especially with asthma; People who smoke tobacco regularly; People who are pregnant; might pose a risk of miscarriage and health problems to their fetus; Older adults; People with chronic illnesses such as heart disease, anemia, or breathing problems. […] If someone has collapsed, has difficulty breathing or is unconscious, immediately call 911. […] These could be signs of severe carbon monoxide poisoning, and immediate medical attention is needed to potentially save a life.
  • #2 Carbon Monoxide Poisoning Basics | Carbon Monoxide Poisoning | CDC
    https://www.cdc.gov/carbon-monoxide/about/index.html
    The most common symptoms of CO poisoning are headache, dizziness, weakness, upset stomach, vomiting, chest pain, and confusion. CO symptoms are often described as flu-like. […] If you breathe in a lot of CO, it can make you pass out or kill you. People who are sleeping or drunk can die from CO poisoning before they have symptoms.
  • #2 Carbon monoxide poisoning
    https://www2.hse.ie/conditions/carbon-monoxide-poisoning/
    The symptoms of carbon monoxide poisoning are not always obvious, particularly in low-level exposure. […] The symptoms of exposure to low levels of carbon monoxide can be similar to food poisoning and flu. Low-level exposure symptoms include: headache, dizziness, nausea (feeling sick) and vomiting, tiredness and confusion, stomach pain, shortness of breath and difficulty breathing. […] The longer you inhale the gas, the worse your symptoms will be. You may lose balance, vision, memory or consciousness. This can happen within 2 hours if there’s a lot of carbon monoxide in the air. […] Long-term exposure to low levels of carbon monoxide can cause neurological symptoms. This means you may have difficulty thinking and experience regular emotional changes. You might become easily irritated, depressed or make impulsive, irrational decisions.
  • #2 Recover from Carbon Monoxide Poisoning’s Long-Term Effects
    https://www.cognitivefxusa.com/blog/carbon-monoxide-poisoning-long-term-effects
    Increasing CO exposure may lead to cardiac problems, including fast heart rate, low blood pressure, chest pain, and cardiac arrhythmia. Patients may also experience short-term symptoms affecting their central nervous system, such as delirium, hallucinations, drowsiness, dizziness, unsteady gait, confusion, seizures, and central nervous system depression. Ultimately, severe poisoning can cause loss of consciousness, respiratory arrest, and death. […] The most common symptoms of chronic CO poisoning include persistent headaches, lightheadedness, fatigue, memory problems, nausea, hearing disorders, sleep disorders, abdominal pain, diarrhea, and vomiting. Each time a patient is exposed to CO, they will develop one or more of these symptoms. […] Irrespective of whether patients were exposed to acute or chronic CO poisoning, they can develop persistent symptoms even after the source of CO is removed. These symptoms occur in up to 50% of all patients who sustained toxic levels of CO.
  • #2 Carbon Monoxide Poisoning: Causes, Symptoms, Treatment
    https://patient.info/chest-lungs/carbon-monoxide-poisoning
    Carbon monoxide poisoning symptoms include: […] Milder symptoms of carbon monoxide poisoning include: Headache. Feeling sick (nausea) or being sick. Dizziness. Flushing. Feeling weak. Abdominal pain. Difficulty in concentrating. […] These can be mistaken for flu or tummy bugs, with occasionally fatal consequences. With vague symptoms, it is more likely that carbon monoxide poisoning is the cause if: Other people in the house have the same symptoms; or Your symptoms are worse at home and better when you’re outside. […] Exposure to low levels of carbon monoxide over long periods can result in developing any of these symptoms along with: Memory problems. Flu-like symptoms. Tiredness. Loss of vision. Problems with sleep, smell or balance. Anxiety. […] More severe cases of carbon monoxide poisoning can lead to: Palpitations. Breathlessness. Personality change. Confusion. Heart attack. Convulsions and loss of consciousness. […] Carbon monoxide poisoning can cause serious symptoms weeks after apparently recovering from an acute poisoning episode. Confusion, personality changes and symptoms similar to those of Parkinson’s disease can all occur.
  • #2 Carbon Monoxide Poisoning | Mass General Brigham
    https://www.massgeneralbrigham.org/en/about/newsroom/articles/carbon-monoxide-poisoning
    The classic story would be a family going to bed at night, all feeling a headache at the same time, Dr. Armand says. Any time you have multiple people in the same location having similar symptoms, the first thought we have is that theres something in the air or in the water. If multiple people in the same place have headaches, nausea, and vomiting, then its often carbon monoxide. […] Once youre outside, if symptoms are severe or last for 30 minutes, go to the hospital.
  • #2 Carbon Monoxide Poisoning & Long-Term Damage | Aviv Clinics
    https://aviv-clinics.com/blog/brain-health/surviving-carbon-monoxide-poisoning-long-term-damage-explained/
    The silent aftermath of carbon monoxide (CO) exposure can catch survivors off guard. Many survivors feel disoriented, struggle with simple tasks, and experience fatigue that never seems to lift. […] Exposure to this colorless, odorless gas carries the potential for long-term health complications. Oxygen deprivation can lead to health issues that persist for months or even years. […] In the acute stage of CO poisoning, the brain experiences immediate distress, with symptoms such as: Confusion, Dizziness, Headaches, Brain fog, Loss of consciousness. […] Quick intervention can help mitigate these initial symptoms, but even after treatment, many patients see long-term carbon monoxide poisoning effects on the brain, some of which appear well after initial exposure. Delayed neuropsychiatric syndrome (DNS) develops in up to 50% of adult survivors.
  • #2 Long-Term Effects of Carbon Monoxide Poisoning – Wyatt Law Firm, PLLC
    https://www.wyattlawfirm.com/long-term-effects-of-severe-carbon-monoxide-poisoning/
    The symptoms might gradually increase over time, which can delay the recognition that you need medical treatment. Delaying a diagnosis can increase the chances that you might experience long-term effects of poisoning. […] People with mild carbon monoxide poisoning may recover fully and escape long-lasting side effects. On the other hand, people with moderate to severe poisoning may never be the same. […] Because carbon monoxide poisoning results in hypoxic cell death, it affects the most oxygen-sensitive parts of the body, particularly the basal ganglia in the brain. Many CO poisonings cause permanent brain damage. Some of the identifiable long-term effects include physical, mental, and behavioral changes. […] The physical effects of carbon monoxide can impair your movement, sensation, and bodily functioning.
  • #2 Carbon Monoxide Poisoning – Injuries and Poisoning – Merck Manual Consumer Version
    https://www.merckmanuals.com/home/injuries-and-poisoning/poisoning/carbon-monoxide-poisoning
    Carbon monoxide poisoning is common. […] Symptoms may include headache, nausea, drowsiness, and confusion. […] Mild carbon monoxide poisoning causes headache, nausea, dizziness, difficulty concentrating, vomiting, drowsiness, and poor coordination. Most people who develop mild carbon monoxide poisoning recover quickly when moved into fresh air. […] Moderate or severe carbon monoxide poisoning causes impaired judgment, confusion, unconsciousness, seizures, chest pain, shortness of breath, low blood pressure, and coma. Thus, many victims are not able to move themselves and must be rescued. […] Severe carbon monoxide poisoning is often fatal. Rarely, weeks after apparent recovery from severe carbon monoxide poisoning, symptoms such as memory loss, poor coordination, movement disorders, depression, and psychosis (which are referred to as delayed neuropsychiatric symptoms) develop.
  • #2 Long-Term Effects of Carbon Monoxide Poisoning – Wyatt Law Firm, PLLC
    https://www.wyattlawfirm.com/long-term-effects-of-severe-carbon-monoxide-poisoning/
    In addition to physical manifestations of carbon monoxide poisoning, many people experienced symptoms that involve their mental and psychological functioning: Depression, Irritability, A decline in information processing and cognitive ability, Compromised short-term memory, Decreased language and reading skills, Decreased math skills, Memory loss, Inability to enjoy things once enjoyed, Difficulty concentrating, Anxiety and panic attacks, PTSD, including phobias relating to the CO poisoning. […] Perhaps even more difficult to bear are the behavioral effects of CO poisoning. Often, it can be difficult for others to connect these effects to your chemical exposure, which can make everyday life even more difficult.
  • #2 Carbon Monoxide Poisoning & Long-Term Damage | Aviv Clinics
    https://aviv-clinics.com/blog/brain-health/surviving-carbon-monoxide-poisoning-long-term-damage-explained/
    One of the first signs of acute CO poisoning is brain fog. For chronic carbon monoxide poisoning survivors, this fog never completely goes away. Survivors may also experience: Memory loss, Difficulty concentrating, Problems with executive function. […] Studies show its not uncommon for patients to experience personality changes as well as prominent depression, anxiety, and irritability several years after accidental CO poisoning. […] One major reason CO poisoning is so concerning is that the chronic stage includes progressive neurological decline, especially if left untreated. […] The heart depends on a steady supply of oxygen to function optimally. When this supply is disrupted by CO exposure, survivors may find themselves at an increased risk of heart conditions, as myocardial tissue is highly sensitive to oxygen deprivation.
  • #2 Signs of Carbon Monoxide Poisoning | Rochester Regional Health
    https://www.rochesterregional.org/hub/carbon-monoxide-poisoning
    Carbon monoxide (CO) is an odorless and colorless gas that can cause sudden sickness and death if inhaled. […] CO poisoning symptoms are similar to flu symptoms: headache, nausea, dizziness, drowsiness, vomiting, and shortness of breath. […] Symptoms include: headache, nausea, dizziness, drowsiness, vomiting, shortness of breath. […] These patients can be difficult to identify because the symptoms of carbon monoxide poisoning are often non-specific, share overlap with flu-symptoms, and occur during traditional flu season. […] The onset of nervous system and brain-related symptoms can occur after recovery from CO poisoning, and the risk is higher in people who lost consciousness or are elderly. […] Lingering post-CO poisoning symptoms may include: memory loss, personality changes, movement problems.
  • #2 Content – Health Encyclopedia – University of Rochester Medical Center
    https://www.urmc.rochester.edu/Encyclopedia/Content?ContentTypeID=90&ContentID=P02835
    Symptoms can occur a bit differently in each child. They can include: […] Symptoms can include headache, dizziness, nausea, and vomiting. […] It may be CO poisoning if symptoms occur at home and not at school. Or it may be CO poisoning if more than one person in the home has these symptoms. […] The symptoms of carbon monoxide poisoning can be like other health conditions, such as the flu and food poisoning. Make sure your child sees their health care provider for a diagnosis. […] A child may have long-lasting (permanent) damage to the brain or heart. This depends on the amount of CO exposure. Severe carbon monoxide poisoning can cause nervous system or psychiatric symptoms days or weeks later. This is known as delayed neuropsychiatric syndrome. Follow-up should include a repeat medical and neurological exam in 2 weeks. In some cases, CO poisoning can lead to death.
  • #3 Carbon Monoxide Toxicity: Practice Essentials, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/819987-overview
    Carbon monoxide (CO) is a colorless, odorless gas produced by incomplete combustion of carbonaceous material. Clinical presentation in patients with CO poisoning ranges from headache and dizziness to coma and death. […] CO binds to cardiac myoglobin with an even greater affinity than to hemoglobin; the resulting myocardial depression and hypotension exacerbates the tissue hypoxia. […] HbCO levels often do not reflect the clinical picture, yet symptoms typically begin with headaches at levels around 10%. Levels of 50-70% may result in seizure, coma, and fatality. […] A study by Ahn et al using the National Health Insurance Service (NHIS) of Korea database found evidence for an association between CO poisoning and the development of internal malignancies. […] An analysis of 331 pediatric patients with CO poisoning seen at a single-site emergency department found risk factors associated with severe disease course were a low Glasgow Coma Scale score, high leukocyte count, and high troponin T levels at presentation. […] Patients with myocardial injury from CO poisoning are at higher risk for short-term mortality, and survivors are at increased risk for neurocognitive sequelae and future myocardial infarction. […] Survivors of intentional CO poisoning are at extreme risk for subsequent completion of suicide.
  • #3 12 Signs There Is Carbon Monoxide in Your House: Symptoms & Causes
    https://www.medicinenet.com/12_signs_there_is_carbon_monoxide_in_your_house/article.htm
    Symptoms of carbon monoxide poisoning vary depending on the severity of exposure and the overall health of the person. […] Symptoms of carbon monoxide poisoning vary depending on the severity of exposure and the overall health of the person. […] In general, carbon monoxide poisoning symptoms may include: Headache, Shortness of breath or rapid breathing, Dizziness, Confusion, Chest pain or tightness, Weakness, Feeling sick, Stomach pain, Nausea and vomiting, Drowsiness, Fainting, Clumsiness, Difficulty walking, Impaired vision, Seizure, Coma. […] If the carbon monoxide concentration in the air is much higher, signs of poisoning may occur within 1-2 hours. […] A very high carbon monoxide concentration can even kill an exposed individual within 5 minutes.
  • #3 Carbon Monoxide Poisoning Signs & Effects | Baptist Health
    https://www.baptisthealth.com/care-services/conditions-treatments/carbon-monoxide-poisoning
    The most common symptoms of CO poisoning are headache, nausea, and shortness of breath. […] Common symptoms include: Headache, Shortness of breath, Nausea, Dizziness, Weakness, Chest pain, Confusion. […] People who are exposed to lower levels of CO over time may describe flu-like symptoms without a fever. Higher levels of exposure can lead to passing out and can be fatal within minutes. […] In some cases, symptoms related to the nervous system and brain can develop after recovery from CO poisoning. Symptoms may include: Memory loss, Personality changes, Movement problems. […] CO entering the body at high levels can be fatal within 5 minutes. Lower levels may take 1-2 hours to become fatal.
  • #3 Carbon monoxide poisoning – Symptoms, diagnosis and treatment | BMJ Best Practice US
    https://bestpractice.bmj.com/topics/en-us/432
    Carbon monoxide (CO) poisoning results in significant morbidity and mortality. […] Early symptoms are nonspecific and include headache, dizziness, and nausea. […] Severe poisoning may result in cardiovascular manifestations (e.g., myocardial ischemia, myocardial infarction, cardiac dysfunction, dysrhythmias, cardiac arrest). Neurologic symptoms include acute stroke-like symptoms, altered mental status, confusion, coma, and syncope. […] Around 40% to 50% of survivors of CO poisoning suffer from delayed neurocognitive deficits that can become permanent.

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