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4. Normal and Abnormal Diastolic Pressure

Normal diastolic pressure is 80 mm Hg. Physicians usually use systolic blood pressure to determine hypertension, but diastolic pressure also plays a role. Stage 1 hypertension is a diastolic pressure of 80 to 89, while Stage 2 is a diastolic pressure of 90 or higher. A diastolic pressure higher than 120 can indicate a hypertensive crisis.

normal abnormal blood pressure aldomurillo / Getty Images

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