Tag Archives: Blood Pressure

December 27, 2007
How does a blood-pressure gauge work?– also tagged

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 [...]