Time-qualified tolerance limits for ambulatory blood pressure monitoring in the diagnosis of hypertension

375 normotensive volunteers (200 men), 43.1±1.0 (mean±SE) years of age, without medical history of hypertension and diurnal mean of ambulatory monitored BP below 135/85 mm Hg for systolic/diastolic BP.

Ambulatory blood pressure monitoring for 48 consecutive hours (measured at 20-minute intervals during the day and 30-minute intervals at night) with simultaneous wrist actigraphy.

90% circadian tolerance intervals for blood pressure for each gender separately.surrogate