The blood pressure measurement usually includes a high pressure value, a low pressure value. Usually, we call the high pressure systolic blood pressure. The systolic blood pressure refers to the blood rushing out of the heart when the body’s heart contracts. At this time, the arterial blood vessels are under the most pressure, so It is called high pressure; low pressure is called diastolic blood pressure, and diastolic blood pressure is when the heart is dilated, blood returns to the heart, blood vessels rebound, and the measured blood pressure value is low pressure.
Usually, there is a pressure difference between high pressure and low pressure. This value is generally between 30 and 40. However, if it is too large or too small, it should be paid enough attention to eliminate the measurement error.
