cardiac pacemaker

• 一种植入胸部或腹部的小型医疗装置，用于通过发送电脉冲帮助控制异常心律，维持正常心跳。

A small medical device implanted in the chest or abdomen to help control abnormal heart rhythms by sending electrical pulses to the heart to beat at a normal rate.

1. Medical deviceB2formal

   A small electronic device implanted in the chest to regulate the heartbeat by sending electrical impulses to the heart muscles.

   医疗器械

   • The surgeon implanted a cardiac pacemaker to treat his arrhythmia.
   • Modern cardiac pacemakers can adjust the heart rate based on activity levels.
   • She needs to have her cardiac pacemaker checked every six months.

2. Natural heart nodeC1formal

   The sinoatrial node, a group of cells in the heart that generates electrical impulses to initiate the heartbeat.

   心脏自然起搏点

   • The sinoatrial node acts as the natural cardiac pacemaker.
   • If the natural cardiac pacemaker fails, an artificial one may be needed.
   • The heart's natural pacemaker controls the rhythm of contractions.