Relationship between extreme dippers and orthostatic hypertension in elderly hypertensive patients

Hypertension
K KarioK Shimada

Abstract

Among elderly hypertensive subjects, extreme dippers with marked nocturnal fall in blood pressure (BP) as well as nondippers with absent nocturnal fall in BP are more prone to cerebrovascular disease when compared with those with appropriate nocturnal BP fall. However, the relationship between these abnormal diurnal BP variation patterns and postural BP variation has not been investigated. We investigated the diurnal BP variation by ambulatory BP monitoring and postural BP variation during 70 degrees head-up tilt in 110 asymptomatic hypertensive elderly subjects, who consisted of 29 subjects with white-coat hypertension and 81 with sustained hypertension with various patterns of nocturnal fall in BP (14 extreme dippers, with asleep systolic BP decrease by > or =20% of awake systolic BP; 56 dippers, with decrease by > or =0% to <20%; 11 nondippers, with decrease by <0%). During tilt, the mean (SD) systolic BP increased 10 (19) mm Hg in the extreme dippers (P<.02), and it decreased by 7.5 (13) mm Hg in the nondippers (P<.05), whereas it did not change in the dippers and white-coat hypertensive subjects. The heart rate increased in all four groups to similar degrees during tilt. Orthostatic hypertension defined as systolic BP rise...Continue Reading

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Citations

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