Materiały źródłowe

• #1 Bundle branch block – Symptoms & causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/bundle-branch-block/symptoms-causes/syc-20370514

  In most people, bundle branch block doesn’t cause symptoms. Some people with the condition don’t know they have bundle branch block. […] Rarely, symptoms of bundle branch block may include fainting (syncope) or feeling as if you’re going to faint (presyncope). […] If both the right and the left bundles are blocked, the main complication is a complete blockage of the electric signaling from the upper to the lower chambers of the heart. The lack of signaling can slow the heart rate. A slowed heart rate may lead to fainting, irregular heart rhythms and other serious complications.

• #2 Bundle Branch Block: Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/22938-bundle-branch-block

  A bundle branch block may not cause any symptoms. When this condition does cause symptoms, they may include: […] Bundle branch blockages on both sides may cause symptoms including: […] You’re more likely to feel symptoms if you have: […] You will have a bundle branch block for the rest of your life. The block may either stay the same or worsen over time. […] If you have no underlying conditions, bundle branch block may not affect your overall health or life span. If you have other conditions that affect your heart, BBB may make your heart deteriorate faster and worsen your symptoms.

• #3 Bundle Branch Block > Fact Sheets > Yale Medicine

  https://www.yalemedicine.org/conditions/bundle-branch-block

  Symptoms include chest pain, dizziness, fainting […] Most people with a bundle branch block dont experience any symptoms. For this reason, most dont know they have the condition. However, for those who notice symptoms, they may experience: […] When symptoms of a bundle branch block cause chest pain or fainting, doctors may recommend a pacemaker to restore a controlled flow of electrical activity within the heart. […] People with an asymptomatic bundle branch block typically do not experience negative health effects. However, if treatment is necessary, a pacemaker should help to restore normal electrical signals within the heart, improving the heart rhythm.

• #4 Bundle Branch Block | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/b/bundle-branch-block.html

  Bundle branch blocks usually do not cause symptoms. […] Rarely, right bundle branch block may make symptoms worse in some people with heart failure. […] Symptoms are more likely to occur if you have other problems in addition to your right bundle branch block.

• #5 Bundle Branch Block | The Texas Heart Institute®

  https://www.texasheart.org/heart-health/heart-information-center/topics/bundle-branch-block/

  If there is nothing else wrong with your heart, you probably will not feel any symptoms of bundle branch block. In fact, some people may have the condition for years and never know they have the condition. […] In people who do have symptoms, they may faint (syncope) or feel as if they are going to faint (presyncope). […] Because it can be a warning sign of other, more serious heart conditions. For example, it might mean that a small part of your heart is not getting enough oxygen-rich blood. Also, researchers have found that people who have left BBB may be at greater risk for heart disease than are people who do not have the condition.

• #6 Bundle Branch Block – Heart and Blood Vessel Disorders – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/heart-and-blood-vessel-disorders/abnormal-heart-rhythms/bundle-branch-block

  Bundle branch block usually causes no symptoms. […] Right bundle branch block is not serious in itself and may occur in apparently healthy people. However, it may also indicate significant heart damage due to, for example, a previous heart attack. […] Left bundle branch block tends to be more serious. In older adults, it often indicates coronary artery disease due to atherosclerosis.

• #7 “Comprehensive Guide to Bundle Branch Block: Causes, Symptoms, and Treatment”

  https://www.doctorshubnepal.com/diseases-conditions/bundle-branch-block

  Some people with bundle branch block dont experience any symptoms. However, possible symptoms can include: […] 1. Fainting (Syncope): This is a sudden, temporary loss of consciousness that usually leads to falling down or needing to lie down. 2. Dizziness or Lightheadedness: These sensations can occur when standing up too quickly or when standing for long periods. 3. Shortness of Breath: This can occur during physical activity or when lying flat. 4. Fatigue: This is a feeling of tiredness or exhaustion that doesnt go away with rest. 5. Chest Pain or Discomfort: This can occur when the heart has to work harder to pump.

• #8 Heart block

  https://www.nhs.uk/conditions/heart-block/

  Symptoms of heart block may include: dizziness, fainting or feeling like you’re about to faint, chest pain, tiredness, shortness of breath. […] These symptoms can range from mild to severe depending on the type of heart block you have and how it’s affecting you. […] You may have no symptoms and only find out you have heart block during tests for something else.

• #9 How Serious Is a Right Bundle Branch Block? RBBB Complications

  https://www.medicinenet.com/how_serious_is_a_right_bundle_branch_block/article.htm

  For most people, a right bundle branch block (RBBB) is not a concern since it doesnt result in symptoms and treatment is not required. […] In people with a structurally normal heart, RBBB is not a concern since they wont experience any symptoms, which means treatment is not required for many cases. […] Right bundle branch block (RBBB) blocks the electrical signaling of the heart, so signaling problems can gradually lead to: […] Shortness of breath. […] Because RBBB may alter the electrical activity of the heart, it may create obstacles to identify other heart diseases, such as heart attacks. It could cause a delay in the appropriate management of the condition.

• #10 Left Bundle Branch Block: Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/23287-left-bundle-branch-block

  Left bundle branch block may not cause any symptoms. When this condition does cause symptoms, they may include: […] If you have other conditions that affect your heart, LBBB may make your heart deteriorate faster and worsen your symptoms. […] If you’re over 65 and have heart disease or another cardiovascular disorder, untreated LBBB can be serious. This condition is associated with a higher risk of death, especially if you have heart failure or after a heart attack.

• #11 Understanding Left Bundle Branch Block | Saint Luke’s Health System

  https://www.saintlukeskc.org/health-library/understanding-left-bundle-branch-block

  Left bundle branch block doesnt often cause symptoms on its own. But in some cases, you may have symptoms such as: […] If you have heart failure, left bundle branch block can make symptoms worse.

• #12 Left Bundle Branch Block | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/l/left-bundle-branch-block.html

  Usually, left bundle branch block by itself does not cause symptoms. […] In people with heart failure, left bundle branch block can sometimes make those symptoms such as shortness of breath and fatigue worse. […] Some people may have left bundle branch block for many years without any problems. But a newly diagnosed left bundle branch block may mean there is some underlying heart condition that requires prompt treatment. […] Left bundle branch block is also linked to a greater risk of death after a heart attack.

• #13 Heart block: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/007658.htm

  Heart block occurs when the electrical signal is slowed down or does not reach the bottom chambers of the heart. Your heart may beat slowly, or it may skip beats. Heart block may resolve on its own, or it may be permanent and require treatment. […] If you have second-degree or third-degree heart block, symptoms may include: Chest pain. Dizziness. Feeling faint or fainting. Tiredness. Heart palpitations — Palpitations are when your heart feels like it is pounding, beating irregularly, or racing. […] Most often, you would not have any symptoms for first degree heart block. You may not know you have heart block until it shows up on a test called an electrocardiogram (ECG). […] Call your provider if you feel: Dizzy, Weak, Faint, Racing heart beat, Skipped heart beat, Chest pain.

• #14 Which tests next? Right Bundle Branch… – British Heart Fou…

  https://healthunlocked.com/bhf/posts/147444543/which-tests-next-right-bundle-branch-block-with-painful-symptoms.

  For the past ~5 years, I’ve been suffering with heart „problems”, over the last couple of years these have really intensified, and I am no longer to live a good quality life. […] My main issues are: […] Erratic heart rate – it will jump suddenly high, if for example I walk up some stairs or go to the bathroom, my heart rate will be 130-150 bpm. It sits around 100 bpm resting, but can drop to 60 or rise to over 100 suddenly even at rest. […] Chest pain and palpitations. I have palps every day, they wake me up from naps, I can feel them if I walk to the front door, I feel them at work. […] Breathlessness – I get so out of breath, I have to stop mid-action to catch my breath. […] Fatigue – Doing the smallest of tasks tires me out. […] I would be able to push myself and continue exercising during a session even though I know my heart rate was extremely high, but then I started having episodes of intense breathlessness, chest pain and loss of vision all coupled together.

• #15 Painful left bundle branch block syndrome successfully treated by His-bundle pacing | BMJ Case Reports

  https://casereports.bmj.com/content/15/12/e251071

  Painful left bundle branch block (LBBB) syndrome is a rare cause of episodic chest pain associated with transient LBBB in the absence of flow-limiting coronary artery disease and myocardial ischaemia on functional testing. […] The mechanism of chest pain is not well understood. Still, it is postulated that sudden loss of the ventricular contraction synchrony, which happens in LBBB, will induce a different perception of heartbeat in the brain with possible translation to the chest pain. […] Painful left bundle branch block (LBBB) syndrome is frequently under-recognised by healthcare providers as it is a rare condition. Chest pain from this condition can be pretty debilitating. […] These included pharmacological suppression of sinus node activity with beta-blockers to prevent higher rate-related LBBB or a permanent pacemaker to pace the ventricles from a different site from the left bundle.

• #16 Painful left bundle branch block syndrome successfully treated by His-bundle pacing | BMJ Case Reports

  https://casereports.bmj.com/content/15/12/e251071

  Painful LBBB syndrome is defined as intermittent episodes of angina associated with simultaneous LBBB changes on ECG with the absence of flow-limiting coronary artery disease or ischaemia on functional testing. […] The aetiology of this condition remains unclear, but many of these are rate-related LBBB changes on ECG. […] One proposed theory about why this is painful suggested that dyssynchronous ventricular contraction will suddenly change the brains perception of heartbeat and interpret it as angina pain. […] However, patients will have permanent right ventricle pacing and chronic dyssynchrony. […] With the substantial body of evidence we have nowadays about the benefits of His-bundle pacing in preventing long-term deleterious effects of chronic dyssynchrony from RV pacing only, it has become apparent that His-bundle pacing would be a much better option for long-term treatment of painful LBBB syndrome. […] Our patient did not respond well to pharmacological therapy. This is partly due to their low-resting heart rate and the fact that she changes her QRS morphology at a lower rate than was reported in the cases that responded to beta-blockers.

• #17 Bundle Branch Block 101 – Nursing CE Central

  https://nursingcecentral.com/lessons/bundle-branch-block-101/

  Youll also learn symptoms caused by BBB. […] This lack of oxygen can be responsible for various symptoms that will be discussed in the following sections. […] A patient with LBBB may be asymptomatic or experience syncope, chest pain, dizziness, or dyspnea during strenuous activity. […] In rare cases, LBBB can be accompanied by chest pain. […] Painful LBBB syndrome causes intermittent episodes of debilitating chest pain. […] If a patient is experiencing symptoms from a BBB, treatment options must be examined. […] Patients with asymptomatic BBB may not need intervention. […] If a patient has LBBB in conjunction with decreased cardiac output, cardiac resynchronization therapy (CRT) is indicated. […] Nurses should provide clear instructions to their patients on what emergent symptoms might arise that warrant immediate care. If patients experience shortness of breath, chest pain, pre-syncope, syncope, or dizziness, immediate medical care is advised.

• #18 Bundle Branch Block: Symptoms, Causes, Treatment | Qwark

  https://qwarkhealth.com/conditions/bundle-branch-block

  The prognosis of bundle branch block can be affected by several factors. Underlying heart disease or conditions, such as hypertension or coronary artery disease, can worsen the prognosis. Age, gender, and overall health status can also play a role. Additionally, the type of bundle branch block can impact prognosis, with left bundle branch block often associated with a higher risk of complications. […] The severity of bundle branch block can impact the prognosis. Incomplete bundle branch block is generally considered less severe and may not cause any symptoms or complications. However, complete bundle branch block can increase the risk of other heart rhythm problems and may require treatment. […] The prognosis can be different for left vs. right bundle branch block. Left bundle branch block is typically associated with a higher risk of complications, such as heart failure and sudden cardiac death, than right bundle branch block. However, both types of bundle branch block can potentially lead to further heart problems if left untreated.

• #19 Left Bundle Branch Block – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK482167/

  Left bundle branch block (LBBB) is a cardiac conduction disorder that affects the left bundle branch of the heart’s conduction system, leading to delayed or abnormal electrical impulses through the ventricles. […] LBBB is also linked to an increased likelihood of developing heart failure and arrhythmias, such as atrial fibrillation or ventricular tachycardia. […] The clinical significance of LBBB in asymptomatic individuals is controversial. LBBB often appears in the setting of other cardiovascular diseases, such as hypertension, coronary artery disease, or cardiomyopathy. […] The presence of this rhythm abnormality in middle-aged and older individuals is associated with an increased risk of adverse cardiovascular events, such as heart failure, sudden cardiac death, and cardiovascular mortality.

• #20 Right bundle branch block: Symptoms, treatment, and outlook

  https://www.medicalnewstoday.com/articles/right-bundle-branch-block

  Research indicates that individuals with RBBB who have not previously received a diagnosis of cardiovascular disease are at a higher risk of experiencing cardiovascular-related and all-cause mortality. […] People with RBBB who also experience a heart attack or heart failure have a greater chance of mortality. […] RBBB alone is typically not associated with significant complications. However, in some cases, it may be associated with certain complications or indicate underlying health issues.

• #21 Bundle Branch Block: Types, Symptoms, Treatment and More

  https://www.verywellhealth.com/bundle-branch-block-bbb-1745219

  In most cases, bundle branch block does not produce symptoms, so you might not know that you have this problem unless you have cardiac tests. However, it can cause intermittent effects, including dizziness and even syncope (fainting). […] Such symptoms are more likely to occur if the bundle branch block exists along with a cardiovascular disease such as hypertension (high blood pressure), heart failure, or cardiomyopathy (disease of the heart muscle). […] Symptoms are also more common if the bundle branch block is severe or involves both the right and left bundle branches. […] With a very severe bundle branch block, the electrical impulse may suddenly stop reaching the ventricles altogether, leading to a complete heart block which can produce syncope or sudden cardiac death.

• #22 Bifascicular Block • LITFL • ECG Library Diagnosis

  https://litfl.com/bifascicular-block-ecg-library/

  Bifascicular block is often associated with structural heart disease (50-80%) and extensive fibrosis of the conducting system. There is a risk of progression to complete heart block with additional damage to the third remaining fascicle, however clinical context is important: […] Overall rate of progression to complete heart block is 1-4% per year […] In symptom free patients, these figures are ~1% per year […] Patients presenting with syncope have a 17% annual risk of progression […] Syncope or presyncope in the context of a bifascicular block is an indication for admission and monitoring. If other causes of syncope are not identified on work-up, pacemaker insertion is recommended.

• #23 Left Bundle Branch Block – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK482167/

  LBBB can develop gradually or suddenly. New-onset LBBB in the appropriate clinical context is considered an ST-segment elevation equivalent. […] In some individuals, particularly those without significant underlying heart disease, LBBB may remain stable for many years without causing symptoms or complications. […] In cases of structural heart disease, the presence of LBBB can exacerbate dyssynchrony in ventricular contraction, further impairing cardiac function. […] The natural history of LBBB varies widely depending on the presence and progression of underlying cardiovascular conditions. While some individuals with LBBB may remain asymptomatic with a stable course, others may experience worsening cardiac function, arrhythmias, and heart failure, increasing their mortality risk. […] Regular monitoring and appropriate management, including the potential use of therapies like cardiac resynchronization therapy, are key to improving outcomes in patients with LBBB.

• #24 Left Bundle Branch Block (LBBB) • LITFL • ECG Library Diagnosis

  https://litfl.com/left-bundle-branch-block-lbbb-ecg-library/

  LBBB always indicates pathology, but is common in elderly patients and an incidental finding of LBBB on ECG in asymptomatic older patients does not warrant acute concern. […] New LBBB in the context of chest pain was once considered a STEMI-equivalent and part of the criteria for thrombolysis. However, more up-to-date data suggests that chest pain patients with new LBBB have little increased risk of acute myocardial infarction at the time of presentation. […] Practice has now evolved to examining for excessive discordance or concordant ST segment changes indicative of infarction.

• #25 Right bundle branch block: Symptoms, treatment, and outlook

  https://www.medicalnewstoday.com/articles/right-bundle-branch-block

  A person with RBBB typically does not have symptoms and may not know they have the condition. On rare occasions, a person may faint due to a severe block, though this is unlikely to occur unless other heart issues are present. […] The outlook for a person with RBBB is generally favorable. Doctors often consider it a benign condition that does not significantly impact an individual’s health. […] Some research suggests individuals with RBBB are more likely to have decreased exercise capacity when compared with those without RBBB. […] If RBBB is accompanied by other cardiac anomalies or underlying heart disease, the outlook may depend on the severity and management of those conditions. […] Having RBBB may impact a person’s life expectancy in certain circumstances. However, RBBB alone does not necessarily determine a person’s life expectancy.

• #26 Bundle Branch Block and Fascicular Block – Cardiovascular Disorders – MSD Manual Professional Edition

  https://www.msdmanuals.com/professional/cardiovascular-disorders/specific-cardiac-arrhythmias/bundle-branch-block-and-fascicular-block

  There are usually no symptoms, but presence of either suggests a heart disorder. […] RBBB can occur in people with no evidence of heart disease. […] Isolated RBBB produces no symptoms. Thus, isolated RBBB requires no specific therapy. […] Isolated LBBB rarely produces symptoms but may produce interventricular mechanical dyssynchrony that reduces the efficiency of left ventricular systolic function and may contribute to heart failure, particularly in association with other heart disorders that reduce left ventricular systolic function. […] Isolated intraventricular conduction delay produces no symptoms.

• #27 Right Bundle Branch Block | Saint Luke’s Health System

  https://www.saintlukeskc.org/health-library/right-bundle-branch-block-0

  Right bundle branch block doesn’t cause symptoms on its own. It may make symptoms of other heart problems worse, such as heart failure. […] If you have no symptoms and no other heart conditions, you don’t need treatment. If you have heart disease, your healthcare provider will want to keep track of your heart health. In certain cases of severe heart failure, or other conduction disease, you may need a pacemaker. It can help restore the normal pattern of the heart.

• #28 Right Bundle Branch Block: Symptoms, Causes, Diagnosis, Treatment

  https://www.healthline.com/health/right-bundle-branch-block

  RBBB doesn’t always cause symptoms. In fact, some people have it for years and don’t realize it until it shows up on an electrocardiogram (ECG or EKG). […] But in rare cases, a delay in the arrival of electrical impulses to the heart’s right ventricle can cause syncope. Syncope is fainting due to unusual heart rhythms that affect blood pressure. […] Some people might also experience something called presyncope. This involves feeling like you’re about to faint but never actually fainting. […] When they’re first discovered, right bundle branch blocks can seem alarming, but they’re usually not as serious as they sound. In some cases, you might not even know you have one for many years.

• #29 Bundle Branch Block | Cardiac Health

  https://www.cardiachealth.org/bundle-branch-block/

  The complications of a bundle branch block are similar whether the blockage is on the right or left side of your heart. Complications may include: Slow heart rate (bradycardia). Some of these patients may need to have a pacemaker. […] People who have a heart attack and develop a bundle branch block have a higher chance of complications and death than do people who have heart attacks and dont develop a bundle branch block. […] Incomplete right bundle branch block is very commonly seen and can be considered a normal variant of the QRS complex. This is frequently seen in teenagers and does not necessarily represent a serious heart condition.

• #30 Bundle Branch Block: What to Know

  https://www.webmd.com/heart-disease/bundle-branch-block

  Impulses, or electrical signals, travel through both the left and right chambers of your heart to make it pump. But if the pathway is blocked, the impulses may move slower than normal or irregularly. This is called a bundle branch block. […] Your risk of having a bundle branch block goes up with age or if you have other health issues. […] If your cardiologist spots LBBB on an EKG, they may run tests to figure out the cause. Unlike RBBB, left bundle blocks are more often a sign of tissue damage. […] Blocks typically form on one side. But if both branches are blocked, it may disrupt your hearts electrical activity. Tell your doctor if youre having any of these symptoms: Slow heart rate, Episodes of fainting, Abnormal heart rhythm, Shortness of breath.

• #31 Left bundle branch block (LBBB): ECG criteria, causes, management – The Cardiovascular

  https://ecgwaves.com/topic/left-bundle-branch-block-lbbb-ecg-criteria-treatment/

  Left bundle branch block (LBBB) results from anatomical or functional impairment of the left bundle branch (LBB), leading to a blockage of electrical impulse conduction through this bundle. Consequently, depolarization of the left ventricle is achieved by impulses spreading from the right ventricle. […] The hallmark of LBBB is the prolonged QRS duration. A QRS duration of 120 ms (0.12 s) or more is required to diagnose a complete left bundle branch block. […] Left bundle branch block is always a pathological finding. It affects left ventricular contractility (systolic function) and is associated with adverse cardiovascular outcomes. […] Incomplete left bundle branch blocks tend to progress to complete bundle branch blocks.

• #32 Left Bundle Branch Block: Symptoms, Causes, More

  https://www.healthline.com/health/left-bundle-branch-block

  Left bundle branch block often doesnt cause any symptoms. In fact, some people have it for years and never know they have the condition. […] For others, however, a delay in the arrival of electrical impulses to the hearts left ventricle can cause syncope (fainting), due to unusual heart rhythms that affect blood pressure. […] Other symptoms can include fatigue and shortness of breath. […] While treating the underlying condition might not completely get rid of left bundle branch block, it can lessen the risk of complications, such as progressive disease. […] If you have left bundle branch block, its important that you have regular medical checkups, so your doctor can monitor your heart health and prescribe treatment if it becomes more serious. […] Left bundle branch block is a condition in which theres a slowing along the electrical pathway to your hearts left ventricle. When this happens, the electric impulse has to travel further to reach its endpoint. This makes it harder for your heart to pump blood efficiently.

• #33 Left bundle branch block – UpToDate

  https://www.uptodate.com/contents/left-bundle-branch-block

  Left bundle branch block (LBBB), a pattern seen on the surface electrocardiogram (ECG), results when normal electrical activity in the His-Purkinje system is interrupted. […] LBBB most often occurs in patients with underlying heart disease and may be associated with progressive conducting system disease. However, LBBB can also be seen in asymptomatic patients with a structurally normal heart. […] In patients with significant LV dysfunction, LBBB results in left ventricular dyssynchrony and may contribute to heart failure (HF).

• #34 Right Bundle Branch Block – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK507872/

  Right bundle branch block is usually asymptomatic and is typically found incidentally on ECG. […] Right bundle branch block is generally a slowly progressive degenerative disease of the myocardium. The incidence of right bundle branch block typically increases with age, with up to 11.3% of people by age 80. […] In patients without significant heart disease, right bundle branch block does not have any additional risk. In patients with cardiovascular disease, right bundle branch block is an independent risk factor for all-cause mortality. The presence of a right bundle branch block before acute myocardial infarction, during an acute MI and post-MI, are all associated with higher mortality rates. In heart failure, the presence of a right bundle branch block has also been associated with increased mortality. […] The outlook after treatment is fair but without treatment, most patients have a poor quality of life and a shortened life span.

• #35 Heart Block – BHF

  https://www.bhf.org.uk/informationsupport/conditions/arrhythmias/heart-block

  A bundle branch block is when your electrical impulses that travel through the ventricles (the bottom chambers of your heart) are slower than normal. This happens because of a block in the path that your electrical impulses follow. This delay does not often cause symptoms. […] The delay or block can happen on the pathway that sends electrical impulses to either the left or right side of the ventricles. […] First-degree heart block does not usually cause symptoms or need treatment. Second and third-degree heart blocks can cause symptoms, which include: feeling faint or dizzy, feeling tired and sometimes confused, feeling a pressure or pain in your chest, being short of breath. […] Some people with heart block can have a very low heart rate. In some people, these heart blocks are always there, while in other people, they can come and go. AV heart blocks might turn into higher degree AV heart blocks if they’re left untreated. […] Sometimes there are no symptoms of heart block at all. If you experience severe or sudden symptoms, call 999 for an ambulance.

• #36 Overview of Heart Block – Heart and Blood Vessel Disorders – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/heart-and-blood-vessel-disorders/abnormal-heart-rhythms/overview-of-heart-block

  Some types of heart block cause no symptoms, but others cause fatigue, dizziness, light-headedness, and/or fainting. […] Usually, no treatment is needed for either type when the block is incomplete (such as in first-degree atrioventricular block). However, an artificial pacemaker may be implanted in people who are at high risk of complete atrioventricular block (such as people with certain types of second-degree atrioventricular block or in people with third-degree atrioventricular block) to maintain the heart rate if complete heart block occurs.

• #37 Right & Left Bundle Branch Block | MedStar Health

  https://www.medstarhealth.org/services/bundle-branch-block

  Bundle branch blocks occur when the electrical impulses travel too slowly through the pathways. This can make it harder for your heart to pump blood throughout the body. It can sometimes cause fainting or increase your risk of complications after a heart attack. […] Most people with this condition dont feel any symptoms, and if you dont have an underlying condition thats causing it, you likely will not need treatment. […] Developing RBBB may be a signal that your heart condition is worsening or your heart muscle is seriously damaged. The risk of developing RBBB increases as you age. […] As you age, you are more likely to develop LBBB associated with a heart condition. […] LBBB can interfere with an electrocardiogram, making it more difficult for your doctor to diagnose other conditions like left ventricular hypertrophy.

• #38 Left bundle branch block: Symptoms, causes, and treatment

  https://www.medicalnewstoday.com/articles/left-bundle-branch-block

  Left bundle branch block (LBBB) is a type heart block. It may cause no symptoms, but an electrocardiogram (ECG) can detect it. […] It does not always cause symptoms, but some people may feel lightheaded and develop chest pain. […] LBBB does not usually cause symptoms, so people may not know that they have this heart problem unless they get cardiac testing. […] It can cause bradycardia, or a slow heart rate, which can lead to any of the below symptoms: dizziness, confusion, fainting, shortness of breath, feeling weak. […] In one 2014 case study, a person with this type of heart block experienced chest pain. […] People should seek medical attention if they experience chest pain, shortness of breath, or lightheadedness.

• #39 What Is The Left Bundle Branch Block? – Klarity Health Library

  https://my.klarity.health/what-is-the-left-bundle-branch-block/

  For patients who are already experiencing heart failure, the presence of LBBB unfortunately increases the likelihood of cardiovascular problems and mortality. It can have a greater impact on individuals with a history of heart failure, potentially leading to more complications and poorer outcomes. Close monitoring and appropriate management are crucial for these patients to optimise their heart health and overall well-being. […] LBBB can also disrupt the coordinated contraction of the ventricles, leading to reduced pumping efficiency and potentially causing symptoms such as fatigue, shortness of breath, and fluid retention. […] Additionally, LBBB may increase the risk of arrhythmias (irregular heart rhythms) that can disrupt the heart’s normal electrical activity. These arrhythmias can result in palpitations, dizziness, and, in rare instances, more serious complications such as fainting or cardiac arrest. While these complications are relatively rare, individuals with LBBB need to be aware of their condition, undergo regular medical monitoring, and seek appropriate medical care if any concerning symptoms arise.

• #40 Bundle branch block – Hancock Health

  https://www.hancockhealth.org/mayo-health-library/bundle-branch-block/

  In most people, bundle branch block doesn’t cause symptoms. Some people with the condition don’t know they have bundle branch block. […] Rarely, symptoms of bundle branch block may include fainting (syncope) or feeling as if you’re going to faint (presyncope). […] If both the right and the left bundles are blocked, the main complication is a complete blockage of the electric signaling from the upper to the lower chambers of the heart. The lack of signaling can slow the heart rate. A slowed heart rate may lead to fainting, irregular heart rhythms and other serious complications. […] Most people with bundle branch block don’t have symptoms and don’t need treatment. For example, left bundle branch block is not treated with medications. However, treatment depends on the specific symptoms and other heart conditions.

• #41 Left Bundle Branch Block | UMass Memorial Health

  https://www.ummhealth.org/health-library/left-bundle-branch-block

  Usually, left bundle branch block by itself doesn’t cause symptoms. […] In people with heart failure, left bundle branch block can sometimes make those symptoms, such as shortness of breath and fatigue, worse. […] Some people may have left bundle branch block for many years without any problems. But a newly diagnosed left bundle branch block may mean there is some underlying heart condition that requires prompt treatment. […] Left bundle branch block is linked with greater risk of death. This is especially true for people with heart failure. […] Left bundle branch block is also linked to a greater risk of death after a heart attack.

• #42 Right Bundle Branch Block: Causes, Treatments, and More

  https://resources.healthgrades.com/right-care/heart-health/right-bundle-branch-block

  You will not usually experience any symptoms with a right bundle branch block (RBBB). […] Your doctor will typically identify RBBB when you have an ECG during a checkup or examination. […] You will typically not have any symptoms with RBBB. However, it is important to contact your doctor as soon as you have concerns about your heart health. […] A right bundle branch block (RBBB) may not affect your life expectancy. It is generally a benign ECG finding for which you may not require any treatment. […] However, RBBB may occur alongside cardiovascular disease. Cardiovascular disease can affect your life expectancy, so it is important to follow any treatment plan for RBBB your doctor recommends. […] A right bundle branch block (RBBB) is a frequent ECG finding that may indicate damage or stretching to the right bundle branch. It is often a benign finding. However, in some cases, it can be a sign of heart failure or cardiovascular disease.

• #43 Right bundle branch block (RBBB): ECG, criteria, definitions, causes & treatment – The Cardiovascular

  https://ecgwaves.com/topic/right-bundle-branch-block-rbbb-ecg-criteria-treatment/

  While traditionally considered benign in asymptomatic individuals, recent evidence suggests that RBBB may be linked to an increased cardiovascular risk. […] Complete RBBB was associated with increased all-cause mortality (1.3-fold higher relative risk) and cardiovascular mortality (1.9-fold higher relative risk), as well as an elevated risk of myocardial infarction (1.7-fold higher relative risk) and pacemaker implantation (2.2-fold higher relative risk). However, it was not associated with heart failure or atrial fibrillation. […] The findings suggest that RBBB in asymptomatic individuals may signal increased cardiovascular risk, challenging the perception of its benign nature.

• #44 Left Bundle Branch Block – MD Searchlight

  https://mdsearchlight.com/heart-health/left-bundle-branch-block/

  Left bundle branch block, often abbreviated as LBBB, doesn’t usually cause any physical symptoms. The only way it can typically be identified is through a specific pattern seen on an electrocardiogram (EKG), which is a type of heart test. […] In healthy people, Left Bundle Branch Block (LBBB), which is a condition that disrupts the heart’s natural rhythm, doesn’t usually pose any specific or additional risk. The death risk related to LBBB is only 1.3 times that of someone without this condition. However, for patients newly diagnosed with LBBB, the death risk increases to more than ten times the normal rate. […] People especially at risk are those with chest pain and newly diagnosed LBBB, which should be considered as serious as ST-segment elevation, a significant sign of a heart attack. For heart failure patients, having LBBB can result in increased heart-related complications and a higher mortality rate. […] However, according to recent research, if we exclude other factors contributing to the health outcomes, the impact of LBBB is much less severe. This is probably because LBBB is often a result of a condition called dilated cardiomyopathy rather than the cause that progresses the disease itself.

• #45 Heart Conduction Disorders | American Heart Association

  https://www.heart.org/en/health-topics/arrhythmia/about-arrhythmia/conduction-disorders

  A person with bundle branch block may feel no symptoms, especially in the absence of any other problems. […] In such cases, bundle branch block is usually first identified by testing for some other reason, such as a routine physical. An electrocardiogram (EKG or ECG) can detect bundle branch block. […] Often, no treatment is required for bundle branch block. But there are cases where treatment may be needed. […] It’s still important to have regular checkups. Your health care professional will want to monitor your condition to make sure that no other changes occur.

• #46 Bundle branch block – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/bundle-branch-block/diagnosis-treatment/drc-20370518

  Most people with bundle branch block don’t have symptoms and don’t need treatment. […] However, treatment depends on the specific symptoms and other heart conditions. […] If you have bundle branch block and a history of fainting, your health care provider might recommend a pacemaker. […] If you have bundle branch block with low heart-pumping function, you may need cardiac resynchronization therapy (biventricular pacing).

• #47 Treatment for Left Bundle Branch Block

  https://healthlibrary.vidanthealth.com/Library/HealthSheets/3,S,90541

  Left bundle branch block is a problem in the hearts electrical system. This causes the left lower heart chamber (ventricle) of the heart to squeeze later than normal. […] If you have symptoms or other heart problems, you may need treatment, such as: […] People with no symptoms and no other heart problems are unlikely to have complications. In other cases, complications may include: […] Call your healthcare provider if you have either of these: Symptoms that get worse […] New symptoms.

• #48 Right Bundle Branch Block

  https://encyclopedia.nm.org/Library/HealthSheets/3,90255

  Right bundle branch block doesn’t cause symptoms on its own. It may make symptoms of other heart problems worse, such as heart failure. […] If you have no symptoms and no other heart conditions, you don’t need treatment. If you have heart disease, your healthcare provider will want to keep track of your heart health. In certain cases of severe heart failure, or other conduction disease, you may need a pacemaker. It can help restore the normal pattern of the heart. […] Call your healthcare provider right away if you have any of these: New lightheadedness or dizziness, Chest pain, Fainting, Shortness of breath.

• #49 Heart Block: Causes, Symptoms, Disgnosis, Treatment

  https://www.webmd.com/heart-disease/what-is-heart-block

  Your symptoms depend on the type of heart block you have. If you have first degree, you may not have any at all. […] Second-degree symptoms may include: Chest pain, Dizziness, Fainting, Fatigue, Nausea, Shortness of breath, The feeling that your heart skips a beat. […] Third-degree heart block needs immediate medical attention right away. Call 911 for any: Cardiac arrest, Dizziness, Fainting, New, severe tiredness, Irregular heartbeat or new palpitations.

• #50 Which tests next? Right Bundle Branch… – British Heart Fou…

  https://healthunlocked.com/bhf/posts/147444543/which-tests-next-right-bundle-branch-block-with-painful-symptoms.

  After the first time, I called the GP who booked me in to check my blood pressure and said I was okay, but after it happened twice more, I called them and they did a 10 minute ECG where they said I might have a Right Bundle Branch Block and advised me to stop exercising. […] I genuinely cannot do anything! I can’t walk around the supermarket, I can’t clean my house all in one go, I can’t take the bins out, I can’t exercise so I am missing my friends massively, I can’t carry out my job as I would like to… I am so sad with my situation, I feel completely debilitated. […] I tried going to the gym, however after 8 minutes on the treadmill, my heart played up and I had to stop… I miss living life normally. […] Has anyone had similar symptoms with a RBBB and with medical help been able to live a full life?

• #51 Left Bundle Branch Block? : Hi again… – British Heart Fou…

  https://healthunlocked.com/bhf/posts/147507676/left-bundle-branch-block

  Ive been back to AE again tonight experiencing mild chest symptoms. […] ECG showed same abnormal changes as last time and the doctor told me I have a left bundle branch block. […] The doctor this time was reluctant to give me an idea what might be causing this left bundle block but I got the impression she had a good idea but didnt want to scare me. […] She stressed to me that you realise your heart could stop at any time which is pretty worrying. […] I think telling you your heart could stop at any time was unnecessary. […] It’s to do with how the electric signal origination from your sinus node in the heart travels throughout to the left atrium and ventricle. This can cause arrryhmias and palpitations because atria and ventricles might go out of sync. […] LBBB is potentially fatal. You could have a cardiac arrest at any time. […] My biggest fear is that its a sign of something more serious, like heart failure. […] LBBB in young people is rare and typically a sign of a more serious underlying condition. […] Please do not trivialise this LBBB. It is just warning sign that you may sustain a heart attack in future.

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