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Definition of Arrhythmias
1. arrhythmia [n] - See also: arrhythmia
Medical Definition of Arrhythmias
1. Abnormal heart rhythms. The heartbeats may be too slow, too rapid, irregular, or too early. Rapid arrhythmias (greater than 100 beats per minute) are called tachycardias. Slow arrhythmias (slower than 60 beats per minute) are called bradycardias. Irregular heart rhythms are called fibrillations (as in atrial fibrillation). When a single heartbeat occurs earlier than normal, it is called a premature contraction. (12 Dec 1998)
Lexicographical Neighbors of Arrhythmias
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