Dear Samuel Aki

Systolic pressure is the maximum blood pressure in the arteries during contraction of the heart when it pumps blood out of the left ventricle into the arteries.

Diastolic pressure is the minimum blood pressure in the arteries when the heart relaxes, stopping the flow of blood from the heart into the arteries and causing the ventricles to enlarge and refill with more blood

A person’s blood pressure is determined by the rate at which the heart is pulsating and by the degree of elasticity in the arteries which allows them expand and contract as pulses of blood pass through them. This elastic expansion and contraction of the arteries tends to maintain a relatively constant flow of blood delivered to the body parts served by the arteries and helps to reduce the pumping load on the heart.

Regards

Dear Samuel Aki

Systolic pressure is the maximum blood pressure in the arteries during contraction of the heart when it pumps blood out of the left ventricle into the arteries.

Diastolic pressure is the minimum blood pressure in the arteries when the heart relaxes, stopping the flow of blood from the heart into the arteries and causing the ventricles to enlarge and refill with more blood

A person’s blood pressure is determined by the rate at which the heart is pulsating and by the degree of elasticity in the arteries which allows them expand and contract as pulses of blood pass through them. This elastic expansion and contraction of the arteries tends to maintain a relatively constant flow of blood delivered to the body parts served by the arteries and helps to reduce the pumping load on the heart.

Regards

Diastolic = It is the pressure that is exerted on the walls of the various arteries around the body in between heart beats when the heart is relaxed. Systolic = It measures the amount of pressure that blood exerts on arteries and vessels while the heart is beating. The easy explanation - It tells us how fast, slow or normal the heart is beating when we take the pulse.

Think of a big balloon. At one end is an air pump that intermittently blows a fixed volume of air into the balloon. At the other end is a small opening that gradually lets out a volume of air while the pump is at rest (the volumes and outflow rates are adjusted so that the balloon does not progressively expand and burst). Then the pressure immediately after the pump has injected the fixed volume of air is the equivalent of the systolic pressure and the pressure immediately before the pump injects the next fixed volume is the diastolic pressure. In the vascular tree the left ventricle is the pump, the vasculature with its stretch is the balloon and the medium/small arteries together with arterioles and capillaries are the outflow route.

Systolic pressure is a measure of how much force the blood is exerting on your circulatory system while the heart is compressing. Diastolic pressure is the amount of force when the heart is resting between beats

following

Here are three (3) references focusing on historical and research perspectives on interpretations of "systolic and diastolic" in human beings:

References:

A historical perspective of elevated systolic vs diastolic blood pressure from an epidemiological and clinical trial viewpoint.

Rutan GH, McDonald RH, Kuller LH.

J Clin Epidemiol. 1989;42(7):663-73. Review.

PMID: 2668449

Select item 1285937

2.

Comparison of ambulatory and clinic blood pressure and heart rate in older persons with isolated systolic hypertension.

Rutan GH, McDonald RH, Kuller LH.

Am J Hypertens. 1992 Dec;5(12 Pt 1):880-6.

PMID: 1285937

Select item 1588358

3.

Lower extremity arterial disease and the aging process: a review.

Vogt MT, Wolfson SK, Kuller LH.

J Clin Epidemiol. 1992 May;45(5):529-42. Review.

PMID: 1588358

Dennis

Dennis Mazur

Systolic is when heart beats. Diastolic is when heart rests.

Good luck.

Dear Samuel Aki , interesting question.

Your heart is just like a pump which works all the time to make the blood flow through all blood vessels. Blood pressure measures the force on the wall of the blood vessels caused by the pressure of the blood.

Systolic pressure is the pressure of the blood when your heart beats to pump blood out.

Diastolic pressure is the pressure of the blood when your heart rests in between beats. This reflects how strongly your arteries are resisting blood flow.

The top number is the maximum pressure your heart exerts while beating (systolic pressure), and the bottom number is the amount of pressure in your arteries between beats (diastolic pressure). The numeric difference between your systolic and diastolic blood pressure is called your pulse pressure.

Systolic pressure: the pressure of the blood when your heart beats to pump blood out. It is the top number of pressure.

Diastolic pressure: the pressure of the blood when your heart rests in between beats. It is the bottom number of pressure.

Thanks a lot for your contribution Musleh

Thanks for your response Mushtak

Thanks Dennis

I appreciate your contribution Jerry

Thanks a lot Beemnet

Thanks Fathy

Thanks Kumar

Following

I agree with the short answer of Dr. Jerry Decker

I agree with the view of Dr. Mushtak

Following

The top number is the maximum pressure your heart exerts while beating (systolic pressure), and the bottom number is the amount of pressure in your arteries between beats (diastolic pressure). The numeric difference between your systolic and diastolic blood pressure is called your pulse pressure.

Thanks Patrick

Thanks Patrick

see this:

https://www.healthline.com/health/high-blood-pressure-hypertension/blood-pressure-reading-explained

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