eli5 why do some blood pressure cuffs have two tubes?

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Regarding automatic blood pressure cuffs, I’m wondering why some blood pressure cuffs have two tubes and others only have one.

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2 Answers

Anonymous 0 Comments

Two identical tubes or two different tubes? Cause in the latter case the second one is a microphone. Measuring the blood pressure via the regular listening for RR sounds, in addition to the oacillometry normally employed by automatic cuffs.

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