Lub-dub Sounds -

A sharper, higher-pitched, shorter "dub."

"The squeeze is over. We are locking the exit doors to keep blood moving forward." The Silence in Between Have you noticed the pause between the "lub" and the "dub"? That silence is the systolic pause (the squeeze). The longer pause after the "dub" is the diastolic pause (the rest/fill). lub-dub sounds

Thump-thump. Thump-thump.