Noun arrhythmia has 1 sense
  1. cardiac arrhythmia, arrhythmia - an abnormal rate of muscle contractions in the heart
    --1 is a kind of heart disease, heart condition, cardiopathy
    --1 has particulars:
     flutter; gallop rhythm, cantering rhythm; atrial fibrillation; bradycardia; heart block, Adams-Stokes syndrome, Stokes-Adams syndrome, atrioventricular block; premature ventricular contraction, PVC; tachycardia; ventricular fibrillation
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