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The mercury type of sphygmomanometers are by far the most accurate ones when it comes to clinical or research purpose. The inflatable cuff is connected to a column of mercury which rises and falls according to the pressure variations made by the pump.
How To Use a Sphygmomanometer: Procedures. • To begin blood pressure measurement , use a properly sized blood pressure cuff . The length of the cuff's bladder should be at least equal to 80% of the circumference of the upper arm. • Wrap the cuff around the upper arm with the cuff's lower edge one inch above the antecubital fossa.
A sphygmomanometer is a device that measures blood pressure. It is composes of an inflatable rubber cuff, which is wrapped around the arm. A measuring device indicates the cuff's pressure. A bulb inflates the cuff and a valve releases pressure. A stethoscope is used to listen to arterial blood flow sounds.
The sphygmomanometer. It is clumsy and pathetically old fashioned, but it is still the most accurate and reliable way of testing blood pressure.