"Perisystole" Natural Recordings by Native Speakers
Perisystole refers to the brief period immediately before or after the peak of the pulse, or at the exact moment of ventricular contraction, with theoretic heart sounds. It is the short period of time when the mitral valve is shut and the aortic valve is closed, also known as the "pause" between the ventricles' contraction.
Perisystole
A peristyle is a porch or colonnade with columns, typically surrounding a courtyard or garden, especially in ancient Greek or Roman architecture. The term is also used to describe a similar structure in modern architecture that is inspired by ancient styles.