Author/Editor		Emelianov, Dmitri; Accetto, R; Bučič, B; Dobovišek, J; Dolenc, P; Kolšek, B; Lapanja, Z; Mihelič-Bričič, M; Petrin, J; Perc-Čerček, O; Žemva, A
Title		Conventional and ambulatory measurements of blood pressure in old patients with isolated systolic hypertension: baseline observtions in the Syst-Eur trial
Type		članek
Source		Blood Press Monit
Vol. and No.		Letnik 3, št. 3
Publication year		1998
Volume		str. 173-80
Language		eng
Abstract		Objectives. To compare clinic and ambulatory measurements of blood pressure in old patients with isolated systolic hypertension and their reproducibilities. Patients. In total 610 patients aged >= 60 years with isolated systolic hypertension detected by clinic measurement were monitored during the placebo run-in phase of the Syst-Eur trial. Methods. The time-weighted 24 h blood pressure, clocktime day and night blood pressures, the cumulative-sumderived crest and trough blood pressures and the high and low blood pressure levels according to the squarewave model were computed. The daily alteration between the high and low spans of blood pressure was quantified using the day-night difference, the cumulative-sum-derived magnitude of circadian alteration, the Fourier amplitude and the difference between the high and low blood pressure levels of the square-wave model. Results. The daytime ambulatory systolic blood pressure was, on average, 21 mmHg lower than the clinic systolic blood pressure, whereas diastolic pressure was, on average, similar with both techniques of measurement. Clinic levels of blood pressure in the 141 patients who underwent repeat measurements and the parameters describing the difference between the daily high and low spans of blood pressure were equally reproducible. However, both were less reproducible than the ambulatory blood pressure levels. The reproducibility coefficients, expressed as percentages of near maximum variaton, were 49 and 50% for the clinic systolic and diastolic blood pressure, 30 and 32% for the mean 24 h systolic and diastolic blood pressures and 45-55% for the parameters describing the daily alteration between the high and low spans of blood pressure. Conclusions. Values of blood pressure in old patients with isolated systolic hypertension were more reproducible for ambulatory than they were for clinic measurements.(Abstract truncated at 2000 characters)
Descriptors		HYPERTENSION SYSTOLE BLOOD PRESSURE DETERMINATION AGED BLOOD PRESSURE MONITORING, AMBULATORY REPRODUCIBILITY OF RESULTS