1. Quality and calibration of the blood pressure monitor
Low-quality or uncalibrated blood pressure monitors may produce inaccurate measurement results.
Sensor failure or aging of the electronic blood pressure monitor may also affect accuracy.
2. Measurement method
Cuff position: The cuff position is too high or too low, which will affect the measurement results.
Tightness of the cuff: Too loose or too tight will cause errors.
Body position during measurement: Different body positions such as sitting, lying or standing may affect the blood pressure value.
Arm measured: Generally, the right arm is measured, but if there is a difference in blood pressure between the left and right arms, improper selection of the measuring arm will affect accuracy.
3. Measurement environment
Noisy surroundings and unsuitable temperatures during measurement may cause the subject to be nervous and affect blood pressure.
4. The subject's own state
Exercise vigorously, smoke, drink, drink coffee or strong tea before measurement.
Emotional tension and anxiety during measurement.
The subject's physiological state, such as holding urine, pain, etc.
5. Measurement frequency and time
Frequent measurements may affect the blood circulation in the arm and affect the measurement results.
If the measurement time is inappropriate, such as just after waking up, after a meal, or shortly after exercise, blood pressure may be in an unstable state.
