Blood pressure test

Blood pressure test

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Credit: WILL & DENI MCINTYRE/SCIENCE PHOTO LIBRARY

Caption: Blood pressure measurement. Woman doctor takes the blood pressure of a 33-year-old man. She uses an instrument called a sphygmomano- meter. It consists of an arm cuff (black) and a pressure gauge (on the wall). The cuff is inflated around the patient's upper arm until blood flow is stopped in a main artery. By slowly deflating the cuff, systolic pressure of the pumping heart is recorded; further cuff deflation gives diastolic pressure of the relaxed heart between pumps. Blood pressure is then expressed as a difference between these two measurements, in millimetres of mercury (mm Hg). Although blood pressure varies over the day, it is an important measure of bodily health.

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Keywords: apparatus, blood equipment, blood pressu, blood pressure, blood pressure measurement, bp measure, diagnosis, doctor, general practice, healthcare, in man, male patient, man, medical, medicine, on man, practitioner, sphygmomanometer, taking blood pressure, woman

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