When blood pressure is measured in the brachial artery by the auscultatory method, why should the arm be at the same level as the heart?

waelhammad

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2022-10-18

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if the arm is lower than the heart, brachial artery pressure will be lower as blood flow is assisted by gravity.
if the arm is higher than the heart, brachial artery pressure will be higher as more force is required to pump blood up hill.
to avoid any hydrostatic pressure effects on the brachial artery pressure.
. there is no reason for it, the practice is part of “nursing ritual”.

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waelhammad

2022-10-18

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C: If the arm is higher, the pressure in the brachial artery will be lower than aortic pressure (and vice versa).

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