Atrial fibrillation is a cardiac arrhythmia in which the upper chambers of the heart the atria beat irregularly and, often, rapidly. The condition occurs as a consequence of uncoordinated electrical ...
Ectopic heartbeats are extra heartbeats that occur just before a regular beat. Ectopic beats are normal and usually not a cause for concern, though they can make people feel anxious. Ectopic beats are ...
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