Usage patterns
心拍が上がるfor one's heartbeat to increase
When you exercise, your heartbeat rises.
心拍を測るto measure one's heartbeat
The nurse measured the patient's heartbeat.
心拍が乱れるfor one's heartbeat to become irregular
Severe stress can cause an irregular heartbeat.
心拍が止まるfor one's heartbeat to stop
The doctor confirmed that the heartbeat had stopped.