Arrhythmias, Cardiac [Disease/Finding] Bradycardia [Disease/Finding] C0428977 N0000000600 Bradycardia C1378 D001919 Cardiac arrhythmias that are characterized by excessively slow HEART RATE, usually below 50 beats per minute in human adults. They can be classified broadly into SINOATRIAL NODE dysfunction and ATRIOVENTRICULAR BLOCK. Bradyarrhythmia 1025503 Bradyarrhythmias Bradycardia 48867003 M0002863