How to use a mercury manometer? What is the measurement method of mercury sphygmomanometer?

Mercury manometers should be tested in 7 steps:

1. It is best to take off clothes before the test, especially tight clothing. Subjects are generally seated comfortably. The tester brings a stethoscope.

2. The lower end of the cuff is about 2 cm away from the elbow socket, and the soft side of the stethoscope is gently placed at the forearm artery.

3. After tightening the knob of the air bag, start to press and pump, and the mercury rises.

4. The heartbeat sound can be heard soon after starting to pump, which will appear between 60-90 under normal circumstances. Keep pumping until you reach between 110-130 and the beating sound disappears.

5. After the beating sound disappears, continue to pump and stop pumping when the mercury rises another 30cm.

6. Use the knob to gently release the air bag, pay attention to slow down, the mercury drops at a speed of 2mm per second.

7. When you hear the heartbeat again, record the first number (systolic blood pressure), when the heartbeat sound disappears, record the second number (diastolic blood pressure), and finally write down the blood pressure on a piece of paper.

Good. Here's how to use a desktop sphygmomanometer:

1) Squeeze out the air in the strap airbag first.

2) Tie the strap: It is generally tied at the left elbow wrist (the right elbow wrist can also be tied), and this place will be used all the time. Don't be too tight, it's best to fit two fingers. The seat should be as high as the elbow and wrist of the heart.

3) Plug in the stethoscope.

4) Inflatable: Pinch the small balloon by hand and inflate it to make the mercury rise to a height of 150mmHg.

5) Deflation and pressure measurement: twist the small balloon switch and deflate slowly. Pay attention to the sound of the treasure:

The first ringing is systolic blood pressure (high pressure), look at the scale, and write down the high pressure value; Continue to deflate, and when the thump becomes smaller (change sound), it is diastolic blood pressure (low pressure), and write down the value. At first, you may not be able to hear the umlaut accurately, so you can hear it until there is no sound (if the voice is very small, it will not be counted).

6) Measure three times in a row, take the average value, which is the high and low blood pressure value

Please note: 1) Before measuring blood pressure, be sure to "steady" for a few minutes, especially after activity. In the hospital, people don't have time to let you "stabilize", so it is actually inappropriate to sit down and test.

2) The results of the home test may be different from the results of the hospital test, which has two problems: one is the white coat effect, which is caused by nervousness. Second, there is no "stable" time.

3) Have a record book to record the results of the daily measurement as information for the doctor's reference when seeing a doctor.

Mercury sphygmomanometer measurement method: insert a fine needle from the upper hole of the mercury storage bottle and make a small hole to ensure that the upper hole is unobstructed; cleaning or replacing mercury storage bottles; Cleaning and filtering of mercury. When the mercury sphygmomanometer has zero point dislocation, mercury column bubbles or intermittent faults and other faults, it should not be disassembled, and should be immediately shut down and sent to the professional maintenance department for maintenance.

Mercury sphygmomanometer has the advantages of wide clinical application, good reliability and low cost. However, mercury sphygmomanometers need to be calibrated regularly, and mercury is highly toxic.

The mercury sphygmomanometer should be calibrated annually by turning on the mercury sphygmomanometer switch. If the mercury zero level or the mercury switch is turned on and tilted gradually, the mercury sphygmomanometer will reach 180mm mercury without interruption, indicating that the mercury sphygmomanometer is standard. Otherwise, the mercury sphygmomanometer will fail.

When using a mercury blood pressure meter, the following points should be noted:

1。Straighten out the hose to prevent knots and entanglements, and keep the air duct clear.

2。After opening the mercury tank, the mercury level should reach the zero line. If not, it must be repaired. This condition is due to insufficient mercury content, which can lead to inaccurate measurements, mercury delamination and even splashing.

Three. When the mercury level rises to a higher level, the inflation rate must be reduced to prevent mercury splashing due to some reasons.

Hello, the correct way to use a mercury sphygmomanometer is as follows:

1. Preparation before measurement. Keep the room quiet, and the room temperature is best kept at about 20°C; Relax before the measurement, rest quietly for 20 minutes, empty the bladder and urine before the measurement, do not drink alcohol, do not smoke, and do not drink strong tea and coffee.

2. When measuring, you can sit and lie down, with your feet flat, and your elbows and forebuttocks comfortably placed in a position about parallel to your heart.

3. Turn on the sphygmomanometer, place it in a stable place near the limb, and make the mercury column until zero point.

4. Take off the sleeve to expose the right upper arm, if the sleeve is thin and wide, it can be rolled up to the armpit; Wear an armband, wrap it around the upper elbow joint 2-3 cm, it is advisable to put a finger in, feel the brachial artery (middle and upper 1 3 medial side of the upper arm) in the cubital fossa, and put the auscultation ear on the brachial artery, and measure the pressure by breathing.

5. Unscrew the gas valve to make the mercury drop slowly. When the first pulse beats is heard, the reading is the systolic blood pressure value. Continue to listen while deflating until at a certain blood pressure scale, the pulse sound becomes weaker or even disappears, at which point the displayed blood pressure is diastolic blood pressure.

The person being tested should be calm before the measurement. After the measurement, the retest should be performed at least 1 to 2 minutes later. The average of the two times was selected as the measured blood pressure value.

Also, note:

No matter what kind of blood pressure monitor is used, it is necessary to pay attention to it: choose a quiet environment to measure, wait for 30 minutes after strong exercise before measurement, do not smoke, drink alcohol and drink tea and coffee before measurement, and operate correctly according to the instructions, etc., in order to reduce the measurement error and improve the measurement accuracy.

Mercury sphygmomanometers, Yuyue and Jade Rabbit's are very good. However, it is necessary to spend money every year to go to the Bureau of Metrology to proofread.

Tie the cuff and put the stethoscope, put the stethoscope under the cuff in the position of the arm bend, bring the stethoscope, tighten the screw above the pinch ball and start pressurizing it to about 40 higher than your blood pressure, and then twist the screw above the pinch ball and start to deflate, watch the mercury column fall, and hear the first sound of the heartbeat for high pressure, and the last sound for low pressure.

Put the armband with the upper arm 1-2 cm away from the elbow, the catheter is in the middle of the elbow, don't tie it too tightly or too loosely, you can put the hearing device in, bring the stethoscope and then use the tambourine to pressurize, generally add to 180 on it, and then slowly deflate (rotate the release valve on the tambourine), keep your eyes on the mercury falling, when you hear the first sound in the stethoscope and your eyes see the mercury column protruding for the first time, it is high pressure, When you hear the last thing in the stethoscope and see the last protrusion of the mercury column in the eye, it's low pressure!

The use of mercury sphygmomanometer is relatively complicated, if you can, I recommend you to buy a Yutai sphygmomanometer, which is the same principle as the mercury sphygmomanometer, easy to use, can automatically produce values, and is very accurate.

The correct way is to place the pressure band 4 cm above the elbow bend, preferably at the same height as the body and the sphygmomanometer, after pressurizing to a certain height of the mercury column, slowly deflate, and the first sound heard is systolic blood pressure (that is, high pressure value).