when to determine orthostatic hypertension
Subtract values 3 minutes after standing (or if patient cannot stand, then sitting) from lying values. A decline of â¥20mm Hg in systolic or â¥10 mm Hg in diastolic blood pressure after 3 minutes of standing = orthostatic hypotension. A heart rate increase of at least 30 beats per minute after 3 minutes of standing may suggest hypovolemia, independent of whether the patient meets criteria for orthostatic hypotension.