A decrease in the rate of beating of heart is called__________?

A. Bradycardia
B. Tachycardia
C. Braditachycardia
D. Non of these

A decrease in the rate of beating of heart is called Bradycardia. Bradycardia is a condition typically defined wherein an individual has a resting heart rate of under 60 beats per minute (BPM) in adults, although some studies use a heart rate of less than 50 BPM. Bradycardia typically does not cause symptoms until the rate drops below 50 BPM.