Low pulse pressure

Blood pressure is divided into systolic and diastolic blood pressure, and the difference between systolic and diastolic blood pressure is called "pulse pressure difference". For example, systolic blood pressure is 120 mmHg, diastolic blood pressure is 75 mmHg, and pulse pressure difference is 45 mmHg. In general, the normal person's pulse pressure difference is 20-60 mmHg (2.67-8.0Kpa), the pulse pressure difference greater than 60 mm Hg is too large, and the pulse pressure difference less than 20 mm Hg is too small.

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