Blood pressure refers to the pressure on the side wall of blood vessels when blood flows. Blood pressure is divided into systolic pressure and diastolic pressure, and the difference between systolic pressure and diastolic pressure is called "pulse pressure difference". For example, systolic blood pressure1.20mmhg, diastolic blood pressure 80mmhg and pulse pressure difference 40mmhg. Usually, people only pay attention to the level of blood pressure when measuring blood pressure, and seldom care about the pulse pressure difference. Not knowing the pulse pressure difference has important clinical significance. The pulse pressure difference of normal people is 20~60 mm Hg (2.67 ~ 8.0 kPa). If it is greater than 60 mm Hg, the pulse pressure difference is too large, and if it is less than 20 mm Hg, it is too small. Pulse pressure difference is too small, which is more common in patients with early hypertension. Due to the increase of sympathetic nerve excitability, the small blood vessels on the whole body surface spasm, resulting in low systolic blood pressure and relatively high diastolic blood pressure.
We should strengthen self-care awareness and take preventive measures: check blood pressure regularly, correct problems in time when found, live a regular life, pay attention to diet, exercise actively, insist on taking medicine, and try our best to control blood pressure within the ideal range.