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How To Take Blood Pressure. The patient should sit or lie comfortably. The arm should be fully supported on a flat surface at heart level. (If the armâs position varies, or is not level with the heart, measurement values obtained will not be consistent with the patientâs true blood pressure).
Rating Newest Oldest. Best Answer: (m) blood pressure can be measured either by using a machine called a sphygmomanometer (spig-mom-an-om-eter) or by using an automatic machine. A sphygmomanometer is the older kind of equipment that measures blood pressure using a column of mercury. The person taking your blood pressure will put a cuff around the top of your arm, pump up this cuff and then listen for sounds through a stethoscope placed on your arm.