Monitoring blood pressure
Hypertension is a serious, chronic disorder characterized by a systolic blood pressure of 140 mmHg or higher or a diastolic blood pressure of 90 mmHg or higher. In adults, normal blood pressure is below 120 systolic and 80 diastolic. Levels between normal and high are considered pre-hypertension.
Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital.
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