the systolic sound is caused by ventricular contraction
There will be no systolic sound if blood is flowing freely. This occurs when there is no measurable constriction of an artery.
systolic
The disappearance of sound is caused by blood flowing freely. The blood flows freely because there is no constricted artery.
Rapid potassium infusion causes diastolic and not systolic cardiac arrest.
Systolic
The systolic pressure is measured at the first Karotkoff sound (stage I), it is the first tapping noise that you hear with a stethoscope when taking a manual blood pressure.
diastolic pressure
it calms you and causes your blood to slow down.
it is systolic I remember it by Lub-Dub like clapping your hands.
Diastolic is more likely to be due to a real problem, where systolic may be harmless. However, there's no rule about which is worse...they have different possible causes, both bad and not so bad.
systolic
Top number is the systolic. For example 120/80 120 would be your systolic number.