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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).
To measure your blood pressure at home, you can use either an aneroid monitor or a digital monitor. Choose the type of monitor that best suits your needs. The aneroid monitor has a gauge that is read by looking at a pointer on a dial. Rest for 3 to 5 minutes before measuring your blood pressure. 2  Do not talk. 3  Sit in a comfortable position, with your legs and ankles uncrossed and your back supported. 4  Place your left arm, raised to the level of your heart, on a table or a desk, and sit still.