Eli5: how does the blood pressure cuff determine your blood pressure so accurately?
In: 200
At certain amounts of external pressure, blood vessels are louder because the cells are bouncing off the sides. Less pressure and they can easily flow through, more and they can’t flow fast enough for that effect. Your two blood pressure readings are the endpoints of that “noisy” range, based on how much pressure the cuff is providing.
Fun fact: the device that measures blood pressure is called a sphygmomanometer. Try saying that… even one time slow.
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