How to use mercury sphygmomanometer

Mercury sphygmomanometer is a kind of sphygmomanometer. The earliest sphygmomanometer was used to measure the blood pressure of horses, but it was used to measure the blood pressure of human body after constant changes. But can you use it? Let's share the use of mercury sphygmomanometer.

Usage of mercury sphygmomanometer 1 1. Within half an hour before blood pressure measurement, subjects should ban alcohol, coffee and exciting food. If you have just exercised, you should sit down and rest in a quiet environment for at least ten minutes to calm yourself down and relax, otherwise the measured value will be very high due to activity or nervous mood.

2. After turning on the sphygmomanometer, turn on the switch to see if the mercury column is at the "0" scale. If not, it must be calibrated, otherwise it will affect the measured value.

3. Turn off the switch of the balloon, hold down the cuff with one hand, and hold down the balloon with the other hand to inflate the cuff to see if the mercury column will rise or if there is any interruption of mercury. If it doesn't rise or there is a crack, it means that the sphygmomanometer is leaking, or the amount of mercury is reduced, so the sphygmomanometer can't be used for measurement.

When it is hot, the cuffs should be rolled up so that most of the upper arms are exposed. It's best to take off your sleeves. When the weather is cold, reduce the clothes on the measuring arm as much as possible without affecting the warmth, so as to avoid high blood pressure caused by too much clothes.

5. When measuring blood pressure, the examinee can sit or lie on his back, with his upper limbs straight, and his elbow should be at the same level as his heart and slightly extended to the outside.

6. Squeeze the cuff, after exhausting the gas in the cuff, align the middle of the cuff airbag with the rubber tube at the elbow socket, and evenly wrap the cuff around the upper arm. The lower end of the cuff is 2-3 cm above the elbow socket, and the tightness should be suitable for putting a finger in.

7. When measuring, the chest radiograph of the stethoscope, that is, the receiver should be placed at the brachial artery of the cubital fossa, and it must not be stuffed into the cuff for convenience and convenience, which will make the measured blood pressure higher than the actual value.

8. Wear a stethoscope, turn off the balloon switch, inflate the cuff until the beating sound of brachial artery disappears, then inflate until the mercury column continues to rise for 20 ~ 30 mmHg, keep the eye level with the mercury column scale, turn on the balloon switch, and deflate evenly and slowly at a speed of 4mmHg per second, not too fast.

9. In the process of mercury falling, the scale represented by the clear first beating sound is the systolic blood pressure of the subject; Next, you will always hear the beating sound. When the pulsatile sound suddenly weakens or disappears, the indicated scale is diastolic pressure.

10. If the blood pressure value is too abnormal during measurement, or the measurer can't hear clearly, the gas in the cuff should be exhausted first, and the mercury column should be reduced to "0" scale, and then the second measurement should be made after waiting for a period of time. Generally, continuous measurement is not allowed for more than two times, and the lowest result obtained by measurement shall prevail.

1 1. After the measurement, remove the cuff, squeeze and exhaust, turn off the balloon switch, fold it and put it in the box. Don't forget to tilt the cover of the sphygmomanometer 45 to the right, so that the mercury can completely flow back into the tank, then turn off the switch of the mercury tank and cover it. If mercury is not refluxed, the mercury column will break when it is used next time, and the volatilization of mercury will become very fast.

At present, some mercury sphygmomanometers have made it clear that there is no need for backflow, which is handled according to the manufacturer's product instructions.

How to use a mercury sphygmomanometer 2. Use a mercury sphygmomanometer.

1, need to see if there is any silver leakage or the mercury column is broken. When using, it is necessary to ensure that there is no silver leakage, shake the mercury column to exhaust gas, and let the zero point be on the baseline after opening.

2. Don't tie the cuff of sphygmomanometer too tightly.

3. The stethoscope head must be placed where the pulse beat is obvious.

4. When measuring blood pressure, the auscultation area of the sphygmomanometer should be at the same level as the heart, and the upper arm should have a certain degree of abduction and relaxation, preferably 30-45.

5, when auscultation deflation speed can't be too fast, to gradually deflate, slowly, so as not to miss the first sound. The first sound heard during auscultation is recorded systolic blood pressure, and then gradually deflated. The mercury column goes down gradually, and when you hear the sound change, it is diastolic pressure. If you can't hear the tone sandhi, record it as diastolic pressure when you hear the last tone. This is the measurement method of mercury sphygmomanometer.

How to use mercury sphygmomanometer 3 1? Reduce physiological changes during blood pressure measurement. Blood pressure measurement should be carried out in a quiet and warm room to ensure that patients do not eat, smoke, drink coffee or have a full bladder in a short time, and explain the methods of blood pressure measurement to patients to alleviate their anxiety.

2. When the patient is seated, his back should lean on the back of the chair, his legs should not be crossed, and he should be flat enough. Whether the patient is sitting or supine, the midpoint of the upper limb should be at the heart level, and rest for 5 minutes after posing.

3. Use mercury sphygmomanometer as much as possible. If the aneroid sphygmomanometer is used, check whether the pointer is at the 0 position at the beginning and end of blood pressure measurement to avoid some small objects blocking the pointer at the 0 position, and calibrate the aneroid sphygmomanometer once every six months; Align the middle of the mercury sphygmomanometer and the dial of the aneroid sphygmomanometer with the eyes.

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

5. The cuff should be comfortably tied at the elbow of the patient's bare upper arm by one inch, and the airbag should be placed above the brachial artery. When inflating, the estimated systolic blood pressure can be obtained by touching the fluctuation of brachial artery, and 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 2.67~4.00kpa above the blood pressure predicted according to the pulse, and then open the air valve to deflate the airbag at a speed of 0.267~0.400kpa per second.

7. Pay attention to the appearance of the first sound (Korotkov Ⅰ), when the sound changes (Ⅳ) and when the sound disappears. When you hear Korotkov sound, you should deflate at the rate of 0.267 kPa per beat.

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

Matters needing attention

1. Due to the direction of blood flow, the blood pressure measured by the left hand and the right hand is usually somewhat different; Usually, the blood pressure of the right hand is slightly higher than that of the left hand, but the difference of 10~20mmHg is normal. However, the high measured data shall prevail when recording. If the difference between hands is more than 40 ~ 50mmhg, it may be blood vessel blockage. It is best to consult a doctor to find out the reason.

2, don't just count your blood pressure once, measure your blood pressure several times a day and record it, so that you can understand the changes in your blood pressure in one day.

3. It's best to take blood pressure when relaxing at home, because some people feel nervous when taking blood pressure in medical institutions, which leads to an increase in blood pressure. Medically called "white hypertension", measuring blood pressure at home can overcome this situation.

4, the traditional mercury sphygmomanometer will be affected by thermal expansion and contraction, and the zero position should be calibrated once every six months on average.