These conditions include:īlood thinners are commonly prescribed to prevent blood clots and strokes in people with atrial fibrillation. Other health conditions also may increase the risk of a stroke due to AFib. The risk of stroke from AFib increases as you grow older. Having an overactive thyroid gland can raise the risk of irregular heartbeats.īlood clots are a dangerous complication of atrial fibrillation (AFib). Some prescription medicines and certain cough and cold remedies bought without a prescription can cause irregular heartbeats. You may be more likely to get AFib if you have diabetes, chronic kidney disease, lung disease or sleep apnea. People who have obesity are at higher risk of developing atrial fibrillation. This can change how heartbeat signals travel through the heart. Over time, high blood pressure may cause part of the heart to become stiff and thick. Having high blood pressure increases the risk of getting coronary artery disease. A history of heart attack or heart surgery also makes a person more likely to get the condition. Coronary artery disease, heart valve disease and heart problems present at birth increase the risk of AFib. An increased risk of atrial fibrillation occurs in some families. If these substances are too low or too high, irregular heartbeats may occur. Minerals in the blood called electrolytes - such as potassium, sodium, calcium and magnesium - help the heart beat. Changes in the level of body minerals.This can increase the risk of atrial fibrillation. Drinking too much alcohol can affect the electrical signals in the heart. Use of these substances may lead to the development of more-serious arrhythmias. Caffeine, nicotine and some illegal drugs - such as amphetamines and cocaine - can cause your heart to beat faster. Caffeine, nicotine or illegal drug use.The risk of AFib increases as you grow older. Things that can increase the risk of atrial fibrillation (AFib) include: Taking medicines that contain stimulants, including cold and allergy medicines bought without a prescription.Lifestyle habits that can trigger an AFib episode may include: Some people who have atrial fibrillation have no known heart disease or heart damage. Heart surgery or stress due to surgery or sickness may also cause AFib. Thyroid disease such as an overactive thyroid.Narrowed or blocked arteries, called coronary artery disease.A sleep disorder called obstructive sleep apnea.A problem with the heart's natural pacemaker, called sick sinus syndrome.A heart problem you're born with, called a congenital heart defect.Heart diseases and health problems that can cause AFib include: Problems with the heart's structure are the most common cause of atrial fibrillation (AFib). In people with AFib, the heart rate may range from 100 to 175 beats a minute. This causes a fast and irregular heart rhythm. The AV node is flooded with signals trying to get through to the lower heart chambers. As a result, the upper chambers tremble or shake. The resting heart rate is typically 60 to 100 beats a minute.īut in atrial fibrillation, the signals in the upper chambers of the heart are chaotic. In a healthy heart, this signaling process usually goes smoothly. The signals then go to the lower heart chambers. Next, the signals arrive at a group of cells called the AV node, where they usually slow down. The signals move across the upper heart chambers. The sinus node makes the signals that starts each heartbeat. Inside the upper right heart chamber is a group of cells called the sinus node.
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