--- title: "Atrial Fibrillation: Causes & Treatment | infoMD" description: "Atrial Fibrillation causes heart palpitations. Learn about symptoms, diagnosis, treatment options, and how to manage atrial fibrillation with guidance from medi" lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "MedicalCondition", "name": "Atrial Fibrillation", "alternateName": [ "AFib", "AF" ], "description": "Atrial fibrillation is the most common type of irregular heartbeat, where the heart's upper chambers beat chaotically and out of sync with the lower chambers. This increases the risk of blood clots, stroke, and heart failure.", "associatedAnatomy": { "@type": "AnatomicalSystem", "name": "Cardiovascular" }, "signOrSymptom": [ { "@type": "MedicalSignOrSymptom", "name": "Heart palpitations" }, { "@type": "MedicalSignOrSymptom", "name": "Fatigue" }, { "@type": "MedicalSignOrSymptom", "name": "Dizziness or lightheadedness" }, { "@type": "MedicalSignOrSymptom", "name": "Shortness of breath" }, { "@type": "MedicalSignOrSymptom", "name": "Chest discomfort" } ], "possibleTreatment": [ { "@type": "MedicalTherapy", "name": "Limit or eliminate alcohol and caffeine consumption" }, { "@type": "MedicalTherapy", "name": "Maintain a healthy weight - weight loss can reduce AFib episodes" }, { "@type": "MedicalTherapy", "name": "Exercise regularly at moderate intensity (with doctor's guidance)" }, { "@type": "MedicalTherapy", "name": "Manage stress through relaxation techniques" }, { "@type": "MedicalTherapy", "name": "Treat underlying sleep apnea with CPAP therapy" }, { "@type": "MedicalTherapy", "name": "Quit smoking" }, { "@type": "MedicalTherapy", "name": "Rate-control drugs (beta-blockers, calcium channel blockers) - slow heart rate" }, { "@type": "MedicalTherapy", "name": "Rhythm-control drugs (flecainide, amiodarone) - restore normal heart rhythm" }, { "@type": "MedicalTherapy", "name": "Blood thinners (warfarin, apixaban, rivaroxaban) - prevent stroke-causing blood clots" }, { "@type": "MedicalTherapy", "name": "Antiplatelet drugs for lower-risk patients" }, { "@type": "MedicalTherapy", "name": "Cardioversion - electrical shock or medication to reset heart rhythm" }, { "@type": "MedicalTherapy", "name": "Catheter ablation - destroys small areas of heart tissue causing abnormal signals" }, { "@type": "MedicalTherapy", "name": "Maze procedure - surgical creation of scar tissue to redirect electrical signals" }, { "@type": "MedicalTherapy", "name": "Left atrial appendage closure (Watchman device) - reduces stroke risk without blood thinners" } ], "riskFactor": [ { "@type": "MedicalRiskFactor", "name": "Age over 60" }, { "@type": "MedicalRiskFactor", "name": "High blood pressure" }, { "@type": "MedicalRiskFactor", "name": "Heart disease, heart failure, or prior heart surgery" }, { "@type": "MedicalRiskFactor", "name": "Obesity" }, { "@type": "MedicalRiskFactor", "name": "Family history of atrial fibrillation" }, { "@type": "MedicalRiskFactor", "name": "Hyperthyroidism" }, { "@type": "MedicalRiskFactor", "name": "Sleep apnea" }, { "@type": "MedicalRiskFactor", "name": "Heavy alcohol or caffeine use" }, { "@type": "MedicalRiskFactor", "name": "Diabetes" }, { "@type": "MedicalRiskFactor", "name": "Chronic lung disease" } ], "typicalTest": "Physical examination, blood tests, and imaging studies" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Is atrial fibrillation dangerous?", "acceptedAnswer": { "@type": "Answer", "text": "AFib itself is usually not immediately life-threatening, but it significantly increases your risk of stroke (by 4-5 times) and can lead to heart failure over time if untreated. The main danger comes from blood clots forming in the heart due to irregular blood flow, which is why blood thinners are often prescribed." } }, { "@type": "Question", "name": "Can AFib go away on its own?", "acceptedAnswer": { "@type": "Answer", "text": "Paroxysmal AFib (the intermittent type) can stop on its own within hours or days. However, the condition tends to progress over time - episodes may become longer and more frequent. Early treatment and lifestyle changes can slow this progression. Permanent AFib does not resolve on its own." } }, { "@type": "Question", "name": "Can I exercise with atrial fibrillation?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, moderate exercise is generally safe and beneficial for most people with AFib. Regular physical activity can help control weight, reduce blood pressure, and decrease AFib episodes. However, you should discuss your exercise plan with your cardiologist, as very intense or prolonged endurance exercise may worsen AFib in some people." } }, { "@type": "Question", "name": "Does caffeine cause AFib?", "acceptedAnswer": { "@type": "Answer", "text": "The relationship between caffeine and AFib is debated. Large studies have shown that moderate caffeine consumption (1-3 cups of coffee per day) does not increase AFib risk in most people and may even be slightly protective. However, some individuals are sensitive to caffeine and find it triggers palpitations. If you notice a connection, it's reasonable to reduce your intake." } }, { "@type": "Question", "name": "What does an AFib episode feel like?", "acceptedAnswer": { "@type": "Answer", "text": "An AFib episode often feels like your heart is racing, fluttering, or flip-flopping in your chest. Some people describe it as a quivering sensation. You may also feel short of breath, dizzy, weak, or anxious. However, some people have no symptoms at all and only discover their AFib through routine medical checks or wearable devices." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://infomd.com" }, { "@type": "ListItem", "position": 2, "name": "Conditions", "item": "https://infomd.com/conditions" }, { "@type": "ListItem", "position": 3, "name": "Cardiovascular", "item": "https://infomd.com/conditions/body-system/cardiovascular" }, { "@type": "ListItem", "position": 4, "name": "Atrial Fibrillation", "item": "https://infomd.com/conditions/atrial-fibrillation" } ] } ] --- [Skip to main content](#main-content) [![infoMD](/assets/infomd-logo-CtvTblFD.png)](/) [Home](/) [Conditions](/conditions) [Glossary](/glossary)[Shop](/shop) 1. [Home](/) 2. [Conditions](/conditions) 3. [Cardiovascular](/conditions/body-system/cardiovascular) 4. Atrial Fibrillation Cardiovascular [Heart Health](/topics/heart-health) # Atrial Fibrillation Also known as: AFib, AF infoMD Editorial Team January 28, 2025 8 min read Share: [](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Finfomd.com%2Fconditions%2Fatrial-fibrillation)[](https://twitter.com/intent/tweet?url=https%3A%2F%2Finfomd.com%2Fconditions%2Fatrial-fibrillation&text=Atrial%20Fibrillation) ### Quick Facts Type Episodic Affects Adults over 60, those with heart disease, high blood pressure, or thyroid disorders Prevalence Affects 2.7 to 6.1 million Americans, with prevalence increasing with age Treatable Manageable with blood thinners, rate control medications, and ablation procedures See a Specialist Cardiologist or Electrophysiologist ICD-10 Code I48 ## Overview Atrial fibrillation, often called AFib, is the most common type of heart arrhythmia - an irregular and often rapid heartbeat that occurs when the upper chambers of the heart (the atria) beat chaotically and out of sync with the lower chambers (the ventricles). During an AFib episode, the heart may beat between 100 and 175 times per minute, compared to the normal 60 to 100 beats per minute. AFib can come and go (paroxysmal), persist for longer periods (persistent), or become a permanent condition. Some people feel their heart racing, fluttering, or pounding, while others have no symptoms at all and discover the condition during a routine checkup. Even when it doesn't cause obvious symptoms, AFib significantly increases the risk of blood clots, stroke, and heart failure. The condition affects an estimated 2.7 to 6.1 million Americans and becomes more common with age. While AFib itself is not usually life-threatening, its complications - particularly stroke - can be serious. Fortunately, a range of treatments including medications, procedures, and lifestyle changes can effectively manage AFib and reduce the risk of complications. ## Symptoms Recognizing the symptoms of atrial fibrillation early can lead to faster diagnosis and better outcomes. ### Early Symptoms - Heart palpitations - a sensation of racing, fluttering, or pounding in the chest - Mild fatigue or reduced stamina during physical activity - Slight dizziness or lightheadedness - Feeling that the heart occasionally skips a beat ### Advanced Symptoms - Persistent irregular heartbeat lasting hours or days - Significant shortness of breath, especially with exertion - Chest pain or pressure - Chronic fatigue and weakness - Reduced ability to exercise - Swelling in the legs, ankles, or feet ### Emergency Warning Signs - Sudden, severe chest pain - Fainting or near-fainting episodes - Sudden weakness or numbness (possible stroke) - Difficulty speaking or sudden confusion - Heart rate above 150 bpm that doesn't slow down with rest When to See a Doctor See a doctor if you notice irregular heartbeats, unexplained fatigue, or episodes of dizziness. If you experience chest pain, fainting, sudden weakness on one side of your body, or difficulty speaking, call emergency services immediately - these could be signs of a stroke or other serious complication. ## Causes & Risk Factors ### Common Causes - Structural changes to the heart from high blood pressure or heart disease - Abnormal electrical signals in the atria causing chaotic impulses - Heart valve disease altering blood flow patterns - Overactive thyroid gland (hyperthyroidism) speeding up the heart - Excessive alcohol consumption ("holiday heart syndrome") - Congenital heart defects ### Risk Factors - Age over 60 - High blood pressure - Heart disease, heart failure, or prior heart surgery - Obesity - Family history of atrial fibrillation - Hyperthyroidism - Sleep apnea - Heavy alcohol or caffeine use - Diabetes - Chronic lung disease ## How It's Diagnosed Diagnosis begins with your doctor listening to your heart with a stethoscope and checking your pulse for irregularity. The primary diagnostic tool is an electrocardiogram (ECG or EKG), which records the electrical activity of your heart and can confirm AFib in minutes. If your AFib comes and goes, your doctor may have you wear a Holter monitor (24-48 hours) or an event recorder (weeks to months) to capture irregular episodes. Additional tests help determine the underlying cause and assess complications. These may include an echocardiogram (ultrasound of the heart) to check heart structure and function, blood tests to rule out thyroid problems and check kidney function, a chest X-ray, and in some cases, a sleep study to check for sleep apnea. Your doctor will also assess your stroke risk using a scoring system called CHA₂DS₂-VASc. ## Treatment Options ### Lifestyle Changes - Limit or eliminate alcohol and caffeine consumption - Maintain a healthy weight - weight loss can reduce AFib episodes - Exercise regularly at moderate intensity (with doctor's guidance) - Manage stress through relaxation techniques - Treat underlying sleep apnea with CPAP therapy - Quit smoking ### Medications - Rate-control drugs (beta-blockers, calcium channel blockers) - slow heart rate - Rhythm-control drugs (flecainide, amiodarone) - restore normal heart rhythm - Blood thinners (warfarin, apixaban, rivaroxaban) - prevent stroke-causing blood clots - Antiplatelet drugs for lower-risk patients ### Medical Procedures - Cardioversion - electrical shock or medication to reset heart rhythm - Catheter ablation - destroys small areas of heart tissue causing abnormal signals - Maze procedure - surgical creation of scar tissue to redirect electrical signals - Left atrial appendage closure (Watchman device) - reduces stroke risk without blood thinners ### Complementary Approaches - Yoga and meditation to reduce stress-triggered episodes - Acupuncture (some studies suggest modest benefit for symptom management) - Omega-3 fatty acids (evidence is mixed but may have anti-inflammatory effects) ## Living With Atrial Fibrillation Living with atrial fibrillation involves learning to recognize your triggers and manage them proactively. Many people find that alcohol, caffeine, stress, and poor sleep can set off AFib episodes. Keeping a symptom diary can help you identify patterns and share useful information with your doctor. If you're on blood thinners, you'll need to be mindful of activities that carry a risk of injury and keep up with regular blood tests if taking warfarin. Despite the challenges, most people with AFib lead active, fulfilling lives. Staying on top of your medication schedule, attending regular cardiology appointments, and maintaining a heart-healthy lifestyle are the keys to long-term management. Wearable devices like smartwatches can now detect irregular heart rhythms, providing an extra layer of monitoring. Many patients also benefit from connecting with AFib support groups where they can share experiences and practical tips. ## Potential Complications - Stroke - AFib increases stroke risk by 4-5 times - Heart failure from chronic rapid or irregular heart rate - Blood clots forming in the heart chambers - Cognitive decline and dementia - Cardiomyopathy (weakening of the heart muscle) - Reduced quality of life from persistent symptoms ## Prevention - Control blood pressure with diet, exercise, and medication - Maintain a healthy weight - Limit alcohol consumption - Treat sleep apnea - Manage thyroid conditions - Stay physically active and avoid a sedentary lifestyle - Get regular heart health checkups ## Frequently Asked Questions ### Is atrial fibrillation dangerous? ### Can AFib go away on its own? ### Can I exercise with atrial fibrillation? ### Does caffeine cause AFib? ### What does an AFib episode feel like? * * * ## Sources 1. Atrial Fibrillation. American Heart Association . 2. Atrial Fibrillation - Symptoms and Causes. Mayo Clinic . 3. Atrial Fibrillation. National Heart, Lung, and Blood Institute . 4. Atrial Fibrillation Fact Sheet. Centers for Disease Control and Prevention . Medical Disclaimer This content is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Reviewed By infoMD Editorial Team Last reviewed: March 15, 2025 In This Article [Overview](#overview)[Symptoms](#symptoms)[Causes & Risk Factors](#causes-risk-factors)[How It's Diagnosed](#how-it-s-diagnosed)[Treatment Options](#treatment-options)[Living With Atrial Fibrillation](#living-with-atrial-fibrillation)[Potential Complications](#potential-complications)[Prevention](#prevention)[Frequently Asked Questions](#frequently-asked-questions)[Sources](#sources) ### Quick Facts Type Episodic Affects Adults over 60, those with heart disease, high blood pressure, or thyroid disorders Prevalence Affects 2.7 to 6.1 million Americans, with prevalence increasing with age Treatable Manageable with blood thinners, rate control medications, and ablation procedures See a Specialist Cardiologist or Electrophysiologist ICD-10 Code I48 Advertisement Was this page helpful? 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Fatigue Weight gain Cold intolerance Chronic Learn More ](/conditions/hypothyroidism) ## Related Glossary Terms [Arrhythmia](/glossary/arrhythmia)[Ejection Fraction](/glossary/ejection-fraction)[Hypertension](/glossary/hypertension) #### Explore - [Condition Library](/conditions) - [Health Glossary](/glossary) - [Shop](/shop) #### Body Systems - [Cardiovascular](/conditions/body-system/cardiovascular) - [Digestive](/conditions/body-system/digestive) - [Neurological](/conditions/body-system/neurological) - [Respiratory](/conditions/body-system/respiratory) - [Musculoskeletal](/conditions/body-system/musculoskeletal) - [Endocrine](/conditions/body-system/endocrine) - [Immune System](/conditions/body-system/immune-system) - [Mental Health](/conditions/body-system/mental-health) - [Skin](/conditions/body-system/skin) #### Company - [About infoMD](/about) - [Contact Us](/contact) - [844-357-3601](tel:+18443573601) #### Legal - [Privacy Policy](/privacy-policy) - [Terms of Use](/terms-of-use) - [Disclaimer](/disclaimer) - [Cookie Policy](/cookie-policy) - [Accessibility](/accessibility) © 2026 infoMD LLC. 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