Before measuring blood pressure, first ask the subject to rest for at least 5 to 10 minutes, and maintain emotional stability within 30 minutes before the measurement. It is forbidden to eat, smoke, avoid strenuous exercise, and empty the bladder at the same time. During the measurement, the subject can remain sitting or supine, and try to choose a sitting position.
Regardless of the position, the sphygmomanometer should be at the same level as the heart. The blood pressure cuff is tied 1 to 2 cm away from the upper arm of the subject, with a finger inserted. Avoid talking during the measurement, and avoid repeated continuous measurement. Generally, blood pressure can be measured 1 to 3 times with an interval of about one minute, and the average value is taken.
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