How to Check Blood Pressure in the Ankle

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    • 1). Select a blood pressure cuff of the proper size. The "bladder" of the cuff (the inflatable portion) should cover at least 80 percent of the circumference of the leg.

    • 2). Position the subject on her back, mention that you will return in 15 minutes and suggest that she relax during that time.

    • 3). Bend the subject's leg at the knee, keeping the foot flat.

    • 4). Close the cuff around the leg, with its lower edge about 1 inch above the protuberances on the inside and outside of the ankle, aligning the artery mark on the cuff above the artery in the ankle between the Achilles tendon and the inner ankle bone. Tighten the valve on the cuff so air won't escape. Make sure the gauge is in a position to be read easily.

    • 5). Position the stethoscope ear pieces so they are angled forward in the ears. Feel for the pulse just below the lower edge of the cuff. Place the diaphragm of the stethoscope on this spot. Listen to the pulse.

    • 6). Squeeze the bulb to inflate the cuff. Continue squeezing until the gauge reads 30 mm of mercury (Hg) above the point at which the pulse could no longer be heard.

    • 7). Open the blood pressure valve slowly so that pressure falls at a rate of about 2 mm Hg per second.

    • 8). At the first sound, take a reading---this is the systolic pressure. At the final sound, take another reading---this is the diastolic pressure. Open the valve completely.

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