Since there are different types of sphygmomanometers, including barometer sphygmomanometers, electronic sphygmomanometers, and mercury column sphygmomanometers, there are different ways to read the value of blood pressure.
1. Barometer-type sphygmomanometer: When measuring, you need to observe the scale where the pointer points to is the value of blood pressure.
2. Electronic sphygmomanometer: install the battery, tie the cuff, press the button can be automatically measured. The result of the measurement will be directly displayed on the screen.
3. Mercury column sphygmomanometer: the measurement result is more accurate, when reading the value, you need to look at the mercury surface, don’t look down or look up.
Normal blood pressure ranges from 90mmHg to 139mmHg systolic, 60mmHg to 89mmHg diastolic, and when it exceeds the normal range, it is necessary to consult a doctor as soon as possible.