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the elbow may lead to errors in blood pressure measurement.

The cuff pipe should not be suspended and should be placed securely.

Body movement and limb activity during measurement can seriously affect the accuracy and repeatability of blood pressure readings.

This is because the oscillometric electronic sphygmomanometer relies on very weak changes in cuff pressure. Any disturbance can affect the collection of the signal. In addition to active hand movements, passive movements such as ambulance vibrations and bed movement may also affect the accuracy of blood pressure readings.

The accuracy of oscillometric electronic sphygmomanometers in measuring blood pressure is questionable when the pulse is weak, such as in patients in shock, hypovolemia, and peripheral vascular disease. In addition, the oscillometric electronic sphygmomanometer encounters challenges in the measurement of blood pressure in newborns, which requires a special design to address such problems.

Ambient noise such as ambulance movement signals can sometimes be greater than the physiological pulse signal to be detected, resulting in measurement errors. Fortunately, current oscillometric electronic sphygmomanometers are equipped with sound insulation settings that can reduce the interference of ambient noise to some extent.

Although existing oscillometric electronic sphygmomanometers are designed with some degree of heart rate variability in mind, the more severe heart rate variability can significantly affect the accuracy of oscillometric electronic sphygmomanometer blood pressure measurements. The most obvious example of this is atrial fibrillation.

Diabetes mellitus, renal failure, pre-eclampsia, peripheral vascular disease, etc.

The accuracy of the oscillometric electronic sphygmomanometer may also be affected to some extent due to variations in vascular performance. To further address such issues, system procedures need to be optimized for a more reliable calculation method based on a large number of patient measurements.

Some poor quality oscillometric electronic blood pressure monitors are also relatively inaccurate and less stable due to the quality of their components and the lack of certification of their system procedures for bulk data. Blood pressure measurements may be inaccurate when the battery is close to depletion and the voltage is low.

Only those oscillometric electronic blood pressure monitors that have been validated to international standards should be used in clinical and home use.

1,In a quiet, relaxed, natural environment, the subject was seated upright with the feet flat against the floor

2. Remove all clothing at the wrist so that the wristband can be wrapped directly around bare skin.

3. Ask the patient to hold the hand straight out with the palm up. At 1 cm from the palm of the hand, put the sphygmomanometer on the patient's wrist with the display upward and fasten the wrist strap as tightly as the patient feels comfortable.

4. Bend your forearm upward and place it close to your chest so that your wristband is flush with your heart, and lightly rest your left elbow with your right hand.

5,Press the start button, and when it is automatically inflated and completely deflated, you can read the blood pressure data directly from the display and record the data.

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