
Contents • Types of arrhythmia • What causes an arrhythmia? • Who is at risk? • Signs and symptoms • Diagnosis • Treatment • Living with arrhythmias An arrhythmia is an irregularity with the speed or rhythm of the heartbeat. During an arrhythmia, the heart c...
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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 o...
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An abnormal or irregular rhythm, usually in reference to the heart.
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arrhythmias Abnormal heart rhythms. The heartbeats may be too slow, too rapid, irregular, or too early.
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