decreased heart rate AE MedDRA: 10019301 反射性心率减慢 an arrhythmia AE that has an outcome of fewer than average resting heart beats per minute, usually measured by the number of times the heart ventricles contract per unit of time, usually per minute 心率缓慢 心率减慢（心动过缓） YH, JX heart rate decreased AE MP: MP_0005333 arrhythmia AE