An irregular heartbeat or abnormal rhythm of the heart; a medical condition where the heart beats too fast, too slow, or irregularly.
From Greek 'a-' (without) + 'rhythmos' (rhythm), literally meaning 'without rhythm.' This medical term emerged in the 19th century as cardiology developed.
Your heart has its own drummer, and arrhythmia means that drummer is off-beat—athletes, caffeine lovers, and people with heart conditions all experience it, and modern technology can now map these irregular patterns!
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