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Blood pressure is usually expressed in terms of the systolic pressure (maximum pressure during one heartbeat) over diastolic pressure (minimum pressure between two heartbeats) in the cardiac cycle. It is measured in millimeters of mercury (mmHg) above the surrounding atmospheric pressure , or in kilopascals (kPa).
That’s the pressure in your arteries when your heart is ejecting blood into them, and then the bottom number is called the diastolic pressure, which is the pressure in your arteries when your ...
If the pressure is dropped to a level equal to that of the patient's systolic blood pressure, the first Korotkoff sound will be heard. As the pressure in the cuff is the same as the pressure produced by the heart, some blood will be able to pass through the upper arm when the pressure in the artery rises during systole.
When blood flow is nil (cuff pressure exceeding systolic pressure) or unimpeded (cuff pressure below diastolic pressure), cuff pressure will be essentially constant. When blood flow is present, but restricted, the cuff pressure, which is monitored by the pressure sensor, will vary periodically in synchrony with the cyclic expansion and ...
For years, the upper limit of normal blood pressure (BP) for all adults was 140 systolic pressure (SBP) over 90 diastolic pressure (DBP) mmHg. Higher numbers usually required treatment .
Blood pressure is measured with two numbers, measured in millimeters of mercury (mm Hg). ... The second number — the bottom number — is your diastolic blood pressure. This is the pressure of ...
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