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Systolic and Diastolic Blood Pressure

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Numeric difference between systolic and diastolic blood pressure is pulse pressure. Systolic is the pressure in the blood vessels while the heart is contracting. Diastolic is the pressure in the blood vessels while the heart rests between beats. Similar systolic and diastolic pressures suggests impending circulatory collapse. If the values are too close, the heart has to pump (work) harder to keep the blood moving though the arteries.

The most important cause of elevated pulse pressure is stiffness of the aorta. Stiffness may be due to high blood pressure or fatty deposits damaging the walls of the arteries, leaving them less elastic (atherosclerosis).

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Reference
  1. What happens when diastolic and systolic blood are close together? quora.com
  2. Pulse pressure: An indicator of heart health? mayoclinic.org
  3. Controversy Rises as High Blood Pressure Guideline Lowers. ClinicalPosters News
  4. It’s Dysautonomia—Not Laziness. A Bit More Healthy (subscription)

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