• To assess the discrepancy between casual (office) and home blood pressure readings in patients performing home blood pressure monitoring, we analyzed office, home, and 24-hour ambulatory blood pressure and heart rates in 19 patients in a prospective four-week study. After the month of study, the average difference between mean office and manual home blood pressures in this office hypertensive group was 30 ±17/20±6 mm Hg. The blood pressures taken in the office were substantially greater than the 24-hour average blood pressures and ambulatory blood pressures during work or while at home (awake). An analysis of the automatic monitor readings while in the doctor's office and at 15-minute intervals after leaving the office showed a progressive reduction in blood pressure and heart rate during the first hour after leaving the office. A mean 24-hour blood pressure of less than 130/80 mm Hg was found in 13 (68%) patients. These data suggest that patients with office hypertension are usually normotensive but may have a persistent and recurrent pressor response in a medical care setting. Ambulatory blood pressure monitoring provides confirmation of not only the office-home disparity, but also suggests that stress other than office visits fails to elicit a hypertensive response.
(Arch Intern Med 1986;146:2196-2199)
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