2. How low does blood pressure have to be to be considered hypotension?

Blood pressure is determined by measuring two separate components. Systolic pressure measures blood pressure when the heart contracts. Diastolic pressure refers to the blood pressure between heartbeats when the heart is resting and dilating. Two numbers represent blood pressure: systolic and diastolic. Blood pressure is measured in millimeters of mercury or mmHg. An adult with a blood pressure reading of 90/60 mmHG or lower is said to be experiencing hypotension.


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