The blood-pressure gauge, first invented in 1863, tests how well a person’s heart and blood vessels are working. An inflatable cuff is placed around the patient’s arm and pumped up to stop the blood flow. As the pressure in the cuff is released, the blood starts to flow again and a measurement is taken from the attached gauge. A second measurement is then taken when the blood is left to flow naturally.
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"How does a blood-pressure gauge work?" was posted on Thursday, December 27th, 2007 at 10:16 pm.
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How does blood pressure work?