Systole in a sentence as a noun

If you're gonna pick one random heartbeat, how do you know you didn't pick an extra systole on accident?

The two are symbiotic; they’re the systole and diastole of consciousness.

From what I've read it simply takes the ratio of absorbance from the systole and diastole and considers that a stable non-linear estimator of %SpO2.

Systole definitions

noun

the contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery