http://www.guands.com/high-blood-pressure/blood-pressure-measurement-and-monitoring.html
Correct Posture for blood pressure measurement
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1. Sit with back straight.
2. The air bag and the right atrium are simultaneously in a parallel line.
3. If the cuff tied too tightly, the measured systolic blood pressure and diastolic blood pressure is a little lower; If the cuff tied too loose, the measured systolic blood pressure and diastolic blood pressure is a little higher. Generally, the cuff can accommodate 2 fingers, the tightness is appropriate.
4. The height difference between the table and the chair is 25-30 cm.
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