​What to do if the mercury in the sphygmomanometer is segmented

Sometimes you may encounter mercury segments on the sphygmomanometer. At this time, you must not panic or be at a loss. The correct approach should be to first find out the cause of the mercury segmentation in the sphygmomanometer so that the right remedy can be prescribed. When using a sphygmomanometer, you must pay special attention to its safety. If used improperly, inaccurate measurements are a small matter, but if the mercury explodes, it will affect your life. The segmented mercury in the sphygmomanometer can lead to inaccurate measurements.

The switch was not turned off when it was put away after use, causing air to enter.

Correct usage method: Sit facing the scale of the sphygmomanometer, tilt the sphygmomanometer 45 degrees to your right hand side, wait until the mercury in the glass tube flows into the small metal tube, then turn off the switch and close the sphygmomanometer.

Note: Please check whether there is any mercury leakage in the box under the sphygmomanometer that contacts the table. If there is any, please clean it up as mercury is poisonous. At the same time, please send the sphygmomanometer to the local testing department for retesting and injection of mercury.

Turn on the blood pressure monitor, unplug the cuff tube, tilt the blood pressure monitor to the right and slowly tap it. Repeat this several times and the mercury should fall off.

Remember: after each use, unplug the cuff connecting tube to release the air, tilt the sphygmomanometer 45 degrees to the right to allow all the mercury to enter the mercury pot and then turn off the switch. Mercury will not flow into the glass tube when the sphygmomanometer is placed flat.

Gently tap the sphygmomanometer case or shake the sphygmomanometer to connect the segments of the mercury column. The instrument that measures blood pressure is called a sphygmomanometer. A mercury sphygmomanometer is a sphygmomanometer whose main structure is mercury.

usage

1. Reduce physiological changes during blood pressure measurement. Blood pressure should be measured in a quiet and warm room. Make sure the patient has not eaten, smoked, drunk coffee or has a full bladder in a short period of time. Explain the method of blood pressure measurement to the patient to reduce the patient's anxiety.

2. When the patient sits, his back should lean against the chair, his legs should not be crossed, and his feet should be flat. Whether the patient is sitting or lying on his back, the midpoint of the upper limb should be at the level of the heart, and the patient should rest for 5 minutes after assuming the correct position.

3. Use a mercury sphygmomanometer whenever possible. If a faceless sphygmomanometer is used, check whether the pointer is at 0 at the beginning and end of blood pressure measurement to prevent the pointer from being stuck at 0 by some small debris. Also, calibrate the faceless sphygmomanometer every 6 months; keep the middle of the mercury sphygmomanometer and the dial of the faceless sphygmomanometer level with your eyes.

4. The cuff's air bag should be able to surround 80% of the upper arm and 100% of the child's upper arm, and the width should cover 40% of the upper arm.

5. The cuff should be comfortably tied around the patient's exposed upper arm one inch above the elbow, with the balloon placed above the brachial artery. When inflated, an estimate of the systolic blood pressure can be obtained by touching the fluctuations in the brachial artery. The pulsation will disappear when the systolic blood pressure is measured.

6. Place the stethoscope head on the artery at the lower edge of the cuff, quickly inflate the cuff to a blood pressure value 2.67~4.00kPa above the estimated blood pressure value based on the pulse, then open the deflation valve to allow the airbag to inflate at a rate of 0.267~0.400kPa per second.

Deflate at a rate of

7. Pay attention to the appearance of the first sound (Korotkoff stage I), when the sound changes (stage IV) and when the sound disappears. When the Korotkoff sound is heard, deflate at a rate of 0.267 kPa per beat.

8. When the last korotkoff sound is heard, continue to deflate slowly to 1.33 kPa to find out whether there is an auscultatory gap, and then deflate at an appropriate speed.