1. Preparation:
Let the person being measured rest for 5-10 minutes before measurement, keep relaxed, and sit or lie down.
Choose a suitable sphygmomanometer, check whether the sphygmomanometer is intact, and make sure the mercury column is at the "0" scale.
Choose a suitable cuff, the width of the cuff should cover about 40% of the circumference of the upper arm, and the length should be enough to wrap around the upper arm without affecting the measurement.
2. Tie the cuff:
The person being measured straightens his arm, palms facing up, and wraps the cuff flatly around the upper arm, with the lower edge about 2.5 cm away from the antecubital fossa.
The tightness should be moderate, so that 1-2 fingers can be inserted.
3. Place the stethoscope:
Place the chestpiece of the stethoscope gently on the brachial artery pulsation inside the antecubital fossa, and be careful not to press hard.
4. Measure blood pressure:
Hold the sphygmomanometer balloon, inflate it quickly, so that the mercury column rises to about 30 mmHg higher than the expected systolic pressure, and then slowly deflate it.
When you hear the first beating sound, the mark on the mercury column is the systolic pressure.
Continue to deflate slowly, the sound gradually weakens, and when the sound disappears, the mark on the mercury column is the diastolic pressure.
5. Record the results:
After the measurement, record the systolic and diastolic pressure values.
6. Repeat the measurement:
In order to obtain more accurate results, it is recommended to measure 2-3 times, each with an interval of 1-2 minutes, and take the average value as the final blood pressure value.
