55 Sphygmomanometer

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Sphygmomanometer: Measures blood pressure by inflating a buff around the arm to cut off blood flow and then slowly deflate to allow blood flow back. The time it takes to fill is measured. : 

Sphygmomanometer: Measures blood pressure by inflating a buff around the arm to cut off blood flow and then slowly deflate to allow blood flow back. The time it takes to fill is measured. Example: Normal blood pressure readings are 120/80 or 120 pounds per square inch of pressure when blood starts to flow back into vessel and 80 ppi when the flow is back to normal.