24-hour ambulatory blood pressure monitoring revealed that office pressures poorly predicted average 24-hour pressure in borderline hypertensive patients, unlike in normal or established groups.
Observational (n=75)
Does 24-hour ambulatory blood pressure monitoring reveal different situational BP patterns compared to office readings in normal, borderline, and established hypertensive subjects?
24-hour ambulatory blood pressure monitoring is particularly valuable for patients with borderline hypertension, as office readings do not accurately predict their 24-hour average blood pressure.
Blood pressure (BP) readings were taken every 15 minutes using a noninvasive ambulatory BP recorder during 24 hours in 25 subjects with normal BP, 25 with borderline hypertension, and 25 with established essential hypertension. Readings were analyzed for four situations: (1) physician's office, (2) work, (3) at home, and (4) asleep. Treadmill exercise tests were also performed on a separate occasion with the Bruce protocol. The 24-hour recording in all three groups showed the highest BPs at work and the lowest during sleep. The situational BP changes were generally similar, but both hypertensive groups differed from normal subjects in that they showed consistently higher BPs in the physician's office than at home, whereas normal subjects showed a similar rise of systolic pressure to that of normal subjects. Pressures recorded in the physician's office gave good predictions of the average 24-hour pressure in normal and established hypertensive subjects, but not in the borderline group; in such patients, 24-hour monitoring may be of particular value in establishing the need for treatment.
Thomas G. Pickering (1982) conducted an observational in Hypertension (n=75). 24-hour noninvasive ambulatory blood pressure monitoring was evaluated on Blood pressure readings across four situations (physician's office, work, home, and asleep). 24-hour ambulatory blood pressure monitoring revealed that office pressures poorly predicted average 24-hour pressure in borderline hypertensive patients, unlike in normal or established groups.
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