ysatispaco
从医学上来讲只有一个词组:‘heart beating (heart beat)’,其他词组含有别的意思。其他的例如:heart-throb,heartbeat,heartthrob,palpitate palpitation。heart rate 指的是心率。
往事随风@遗忘
palpitation has some negative connotations, we often reserve the term for irregular heart beats. to answer your question, heart beat, heart rhythm, pulse should all work, the best one would be pulse or heart beat.