ARRHY has various meanings in the NAACCR category. Discover the full forms, definitions, and usage contexts of ARRHY in NAACCR.
An abnormal heart rhythm. In an arrhythmia the heartbeats may be tooslow, too rapid, too irregular, or too early. Rapid arrhythmias are called tachycardias. Slow arrhythmias arecalled bradycardias. Irregular heart rhythms are called fibrillations. When a single heartbeat occurs earlier than normal, it is called apremature contraction.The term arrhythmia comes from the Greek a-, loss + rhythmos, rhythm = loss of rhythm.
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