Traditional Culture Encyclopedia - Traditional customs - Old sphygmomanometer
Old sphygmomanometer
When the old sphygmomanometer measures blood pressure, it must be quiet. When the ear hears the obvious heartbeat, record the scale, and then record the scale when the sound disappears.
Is the level of blood pressure.
Ignore the different sounds you feel, which are caused by the friction of the receiver or the slight shaking of your body. Just catch the sound of the heart beating.
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