arrhythmia
noun [ C or U ] medical specialized uk/əˈrɪð.mi.ə/ us/əˈrɪð.mi.ə/
心律不齐，心律失常
a medical condition in which the heart does not beat with a regular rhythm, or at the normal rate
An arrhythmia is a problem with the rate or rhythm of your heartbeat. 心律不齐是心跳频率或节奏有问题。
the management of heart arrhythmia 针对心率不齐采取的措施