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Sphygmomanometer for measuring blood pressure

Sphygmomanometer for measuring blood pressure

M390/0269

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Credit

BSIP LAURENT / SCIENCE PHOTO LIBRARY BSIP LAURENT / SCIENCE PHOTO LIBRARY

Caption

Blood pressure measurement. Sphygmomanometer instrument used to measure blood pressure. The sphygmomanometer works by inflating a cuff wrapped around the arm until blood flow is stopped in a main artery. By slowly deflating the cuff and listening for the return of blood flow with a stethoscope, the blood pressure during a heartbeat (systolic pressure) is recorded. Further cuff deflation gives the blood pressure between heartbeats (diastolic pressure). Blood pressure is then expressed as a function of these two measurements, in millimetres of mercury (mm Hg).

Release details

Model release not required. Property release not required.

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