Definition of fibrillation 1 : an act or process of forming fibers or fibrils . 2a : a muscular twitching involving individual muscle fibers acting without coordination. b : very rapid irregular contractions of the muscle fibers of the heart resulting in a lack of synchronism between heartbeat and pulse.
Read moreWhat happens during a fibrillation?
During atrial fibrillation, the heart’s upper chambers (the atria) beat chaotically and irregularly — out of sync with the lower chambers (the ventricles) of the heart . For many people, A-fib may have no symptoms. However, A-fib may cause a fast, pounding heartbeat (palpitations), shortness of breath or weakness.19 Eki 2021
Read moreWhat is the difference between fibrillation and arrhythmia?
Atrial fibrillation (AF) is a form of arrhythmia, or irregular heartbeat, in which the atria (the two small upper chambers of the heart) quiver instead of beating effectively . It is one of the most common forms of cardiac arrhythmia, affecting 0.4% of the general population and 5 to 10% of persons over 65 years of age.
Read moreWhat is fibrillation caused by?
The basic cause of AFib is disorganized signals that make your heart’s two upper chambers (the atria) squeeze very fast and out of sync . They contract so quickly that the heart walls quiver, or fibrillate. Damage to your heart’s electrical system can cause AFib.
Read moreIs it normal for heart to flutter occasionally?
Heart palpitations (pal-pih-TAY-shuns) are feelings of having a fast-beating, fluttering or pounding heart. Stress, exercise, medication or, rarely, a medical condition can trigger them. Although heart palpitations can be worrisome, they’re usually harmless .
Read moreCan you have a regular rhythm with AFib?
Some people have AFib every once in a while. Symptoms might last for a few minutes or a few hours. Then things return to normal. Other people have AFib often and need treatment to get their heartbeat to return to a normal sinus rhythm.
Read moreWhat is used to treat arrhythmias like atrial fibrillation?
Medications used to treat atrial fibrillation include: Beta blockers . These medications can help slow the heart rate at rest and during activity. Calcium channel blockers.
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