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Results 601 - 650 of 1380
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Mas D - - 1998
BACKGROUND: Ambulatory measurement for the QKD interval is a new method for evaluation of the rigidity of large arterial trunks. Reliable indices of arterial rigidity can be distilled from the large number of measurements (usually around 100) obtained during 24 h monitoring. OBJECTIVE: To describe a shorter standardized protocol (4 ...
Ohkubo T - - 1998
Although reference values for ambulatory blood pressure (ABP) monitoring have been investigated in several population studies, these values were derived from cross-sectional observations and were based merely on the statistical distribution of blood pressure values. Therefore, we conducted a prospective cohort study to identify reference values for 24-hour ABP in ...
Ho K Y - - 1998
BACKGROUND/AIM OF STUDY: Data on prolonged ambulatory oesophageal pH and pressure monitoring in normal subjects in the East are limited. This study aimed to define the normal characteristics of ambulatory oesophageal pH and motility among healthy adults in Singapore. METHOD: Prolonged ambulatory oesophageal pH and pressure recording was performed on ...
Brown D E - - 1998
Although several studies have examined differences in daily blood pressure variability between African-American and Caucasian groups in the United States, little is known about the blood pressure variation of other ethnic groups. This study examined the effects of emotional state, setting, posture, and ethnicity on the ambulatory blood pressure of ...
Palatini P - - 1998
BACKGROUND: Results of several studies have shown that subjects with white-coat hypertension (WCH) have more target-organ damage than do normotensive controls with similar ambulatory blood pressures. OBJECTIVE: To investigate whether this is due to a selection bias. SETTING: Seventeen hypertension clinics in northeast Italy. MAIN OUTCOME MEASURES: Echocardiographic data in ...
Mengden T - - 1998
The acceptable maximal blood pressure values for patients monitoring their own blood pressure at home have not yet been determined. Risk of cardiovascular disease may be increased at lower blood pressure limits than those suggested by the World Health Organization (WHO) for clinic readings. We have investigated 25 patients with ...
Clausen P - - 1998
A slightly elevated urinary albumin excretion rate (UAER) is a predictor of atherosclerotic cardiovascular disease. The mechanism is unknown, but moderate office blood pressure elevation has been demonstrated as part of a clustering of known atherosclerotic risk factors in subjects with elevated UAER. Because 24-hour ambulatory blood pressure is a ...
Imai Y - - 1998
OBJECTIVE: To define the reference values of ambulatory blood pressure (APB) using results from the Ohasama study. RESULTS: The distribution criteria of 24 h ABP for the total population of Ohasama were 135/79 (mean + SD), 148/86 (mean + SD), and 146/85 mmHg (95th percentile), and those for normotensive subjects ...
White WB - - 1998
Ambulatory blood pressure monitoring has made the transition from a technology used almost exclusively in clinical research to one that has numerous applications for clinical practice and the management of hypertension. During the past 8 years, many national working committees have published consensus documents or clinical guidelines on ambulatory blood ...
Clement DL - - 1998
Only a few large prospective trials intended to address the question of whether management of hypertensive patients should be guided by office (OBP) or ambulatory blood pressure (ABP) and whether fatal and nonfatal cardiovascular events are better predicted by ABP than they are by OBP are going on. Office versus ...
Melamed S - - 1998
OBJECTIVES: This quasi-experimental study tested the ambulatory blood pressure responsivity to daily variation in the work load of the same workers and examined whether this responsivity is moderated by perceived job control. METHODS: The subjects were 79 nonshift, normotensive men who reported nearly almost equal occurrences of low and high ...
Emelianov D - - 1998
OBJECTIVES: To compare clinic and am 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 ...
Henderson R J - - 1998
BACKGROUND: Home training in self-lowering of blood pressure using continuous blood pressure feedback has not previously been reported. Enhancement of laboratory-learned skills was hypothesized on the basis of outcomes from other intellectual, emotional and physical endeavours. OBJECTIVE: To examine the supplementary effect of home blood pressure biofeedback training. DESIGN: Thirty ...
Taylor R S - - 1998
Ambulatory blood pressure monitoring (ABPM) is being increasingly used in general practice. There is at present little published evidence regarding the clinical utility of ABPM in the care of patients with established hypertension in this setting. We examined this issue by undertaking ABPM in a group of patients with established ...
Omboni S - - 1998
OBJECTIVE: To assess whether modifications in the nighttime blood pressure fall caused by antihypertensive treatment predict the regression of end-organ damage of hypertension. METHODS: The analysis was performed in patients with essential hypertension and echocardiographically detected left ventricular hypertrophy involved in the SAMPLE study. For each patient, ambulatory blood pressure ...
Kaemmerer H - - 1998
Despite primarily successful surgical repair of aortic coarctation (CoA), postoperative persistent, recurring, or newly developing hypertension is regarded as a risk factor of earlier mortality compared with a normal population. The present study shows that even after surgical correction of CoA many patients have hypertension at rest or during exercise. ...
Pickering TG - - 1998
INTRODUCTION: The justification for ambulatory blood pressure monitoring is that blood pressure varies, and a better understanding of the causes of such vqariability will greatly improve our knowledge of its consequences. Although it is generally assumed that the average or true level of blood pressure is the main culprit causing ...
Redon J - - 1998
During the last few years there has been a renewed interest in blood-pressure-induced kidney damage, due to a progressive increase in the incidence and prevalence of hyipertension and vascular diseases as a cause of end-stage renal disease (ESRD). The need to prevent ESRD demands continued efforts to achieve the early ...
Stergiou G S - - 1998
OBJECTIVE: To determine the minimum number of self-measurements of blood pressure at home (HBP) necessary to provide the maximum clinically important benefit. METHODS: Hypertensive patients were randomly allocated to monitor HBP for 2 weeks (6 work days, duplicate measurements, twice daily) or ambulatory blood pressure for 24 h. The alternative ...
Brueren M M - - 1998
Our objective was to study seasonal influences on office and ambulatory blood pressure. We therefore designed a prospective 7-month study of 47 borderline hypertensive patients in a primary care setting. We used no interventions. Our main outcome measures were the differences between summer and winter office and ambulatory blood pressures ...
Barna I - - 1998
Decreased diurnal blood pressure variability and low dehydroepiandrosterone sulfate (DHEAS) levels are important predictors of cardiovascular morbidity and mortality. The aim of the study was to determine the relationship between DHEAS levels and diurnal blood pressure variability in normotensive subjects and in patients with essential hypertension of both genders. An ...
Fallo F - - 1998
The aim of the study was to investigate the effect of octreotide, a somatostatin analog drug potentially able to inhibit growth hormone (GH), on the circadian blood pressure profile in a group of patients with acromegaly. Ten patients with GH-secreting pituitary adenoma were studied before and 6 months after treatment ...
Dimsdale J E - - 1998
This report examines the reliability of nighttime blood pressure dipping. Twenty-one individuals were studied twice with ambulatory blood pressure monitoring. On one occasion they were studied as outpatients, and on the other as inpatients on a clinical research ward. Blood pressure monitoring revealed the expected dip in blood pressure at ...
Sulbarán TA - - 1998
BACKGROUND: High blood pressure in the young has been related to the development of hypertension in adults; hence the importance of identifying adolescents with the risk of developing it.OBJECTIVE: To investigate the relationship between 24 h ambulatory blood pressure monitoring and the response of blood pressure in adolescents to exercise. ...
Brown M A - - 1998
OBJECTIVE: Noninvasive 24-hour ambulatory blood pressure monitoring holds great promise as a useful tool in the management of hypertensive pregnancies and pregnancies considered "at risk" for development of preeclampsia. The purpose of this study was to define ambulatory blood pressure monitoring parameters throughout normal pregnancy, including women considered at risk ...
Del Rosario J D - - 1998
OBJECTIVE: The objective of this study was to determine the predictors of future ambulatory blood pressure in normotensive youths with family histories of essential hypertension. STUDY DESIGN: Eighty-eight healthy youths (mean age 10.9 +/- 2.5 years; 52 blacks, 36 whites; 45 boys) were studied. During an initial visit anthropometric variables ...
Nelson M - - 1998
BACKGROUND: Undertaking a blood pressure measurement is a common occurrence in general practice. Excellent guidelines for the management of hypertension are available to all Australian general practitioners. There are, however, variants of primary hypertension that present management dilemmas, such as: is it ever safe to stop medication, the role of ...
O'Brien E - - 1998
With acceptance of ambulatory blood pressure measurement as a useful technique in the management of hypertension, the question of what constitutes the upper limit of normality for 24 h blood pressures has been the subject of a number of reviews [1,2]. In fact, there has been remarkable similarity in a ...
Lucatello A - - 1998
OBJECTIVES: To evaluate the prevalence of hypertension, the average blood pressure level, the 24 h blood pressure profile, and the efficacy of antihypertensive therapy for a large population of peritoneal dialysis patients.DESIGN: A cross-sectional, observational multicenter study. METHODS: From 504 peritoneal dialysis patients (18% of the Italian peritoneal dialysis population) ...
Penny J A - - 1998
OBJECTIVES: Our purpose was to investigate the benefit, if any, of automated blood pressure monitoring over obstetric day unit conventional blood pressure measurement in the assessment of hypertensive pregnancies. STUDY DESIGN: A prospective, observational study was carried out in two large teaching hospitals. Three hundred and forty-eight women with a ...
Redon J - - 1998
The objective of this study was to establish whether ambulatory blood pressure offers a better estimate of cardiovascular risk than does its clinical blood pressure counterpart in refractory hypertension. This prospective study assessed the incidence of cardiovascular events over time during an average follow-up of 49 months (range, 6 to ...
Ker J A JA Department of Internal Medicine, Pretoria Academic - - 1998
Available data on the use of 24-hour ambulatory blood pressure recordings in private practice are limited. For this purpose we studied 39 consecutive hypertensive patients on treatment in a private practice. Office blood pressure, 24-hour ambulatory blood pressure, daytime ambulatory blood pressure and M-mode echocardiography were undertaken in 39 consecutive ...
White WB - - 1998
It has been established that blood pressure and heart rate have a reproducible circadian pattern characterized by a low period during sleep; an early morning, post-awakening rise; and a high plateau period while a subject is awake. This rhythm is influenced by extrinsic (lpar;environmental) and intrinsic (physiologic and pathophysiologic) factors. ...
Leary AC - - 1998
BACKGROUND: Hypertensive patients who fail to exhibit a normal fall in blood pressure at night may have a greater risk of target-organ damage. Sleep, with associated cessation of physical activity, is the principal determinant of nocturnal blood pressure 'dip'. OBJECTIVE: To ascertain whether hypertensive patients, who experience the discomfort of ...
Asai Y - - 1998
OBJECTIVE: To determine whether self-measurement could raise the blood pressure of a patient whose home blood pressure is higher than the office blood pressure measurements taken by a physician. DESIGN: Case report: a 78-year-old woman measured her own blood pressure at office using a home blood pressure monitor (test). The ...
Yoshikawa H - - 1998
This study was designed to clarify the relationship between the antihypertensive effects of the calcium antagonist nilvadipine, and circadian changes in blood pressure. Based on measurements using an ambulatory blood pressure monitoring system (ABPM), 17 outpatients with untreated essential hypertension were divided into two groups: a sustained hypertensive group (with ...
Parati G - - 1998
BACKGROUND: The difference between clinic and ambulatory average daytime blood pressures is frequently taken as a surrogate measure of the 'white-coat effect' (i.e. the pressor reaction triggered in the patient by the physician's visit). OBJECTIVE: To assess the reproducibility of this difference and its relationship with clinic and average ambulatory ...
Guyll M - - 1998
This study examined trait hostility and social interaction in relation to ambulatory cardiovascular activity in 40 male and 39 female undergraduates. Participants wore an ambulatory blood pressure monitor and completed diary entries while engaged in everyday activities. Diary reports indicating that participants had been talking were used to identify cardiovascular ...
Sochett E B - - 1998
The aim of our study was to compare ambulatory blood pressure monitoring (ABPM) measures (mean systolic/diastolic blood pressure, diurnal rhythm, and pressure burden) in matched normo- and microalbuminuric (IDDM) adolescents and healthy controls. Twenty-four hour monitoring was undertaken in 39 normotensive (normal clinic blood pressure measurements) IDDM adolescents (22 normo- ...
Verdecchia P - - 1997
BACKGROUND: In a previous analysis of the Progetto Ipertensione Umbria Monitoraggio Ambulatoriale we found a higher rate of cardiovascular morbid events among hypertensive nondippers than we did among dippers (5.86 versus 1.18 events per 100 person-years, P = 0.0002) for women, whereas the difference between the two groups was smaller ...
Pelosio A - - 1997
BACKGROUND: The drop in blood pressure during the night sleeping hours is well documented. Less is known about the drop in blood pressure during daytime sleep. The objective of this survey is to describe the dropping during conventional and referred sleeping hours of night and afternoon sleep, and the relation ...
Fagard RH - - 1997
OBJECTIVE: To review and categorize methods to define daytime and night-time blood pressures and to propose an optimal definition. METHODS: The methods can be divided into clock-time-independent and clock-time-dependent methods and, in addition, into wide methods, which use all pressure measurements for the entire 24 h period, and narrow methods, ...
Peixoto AJ - - 1997
BACKGROUND: Hypertension is responsible for substantial morbidity in end-stage renal disease. Ambulatory blood pressure monitoring has been used to understand the behavior of blood pressure in renal failure, especially during the interdialytic period for patients on hemodialysis. OBJECTIVE: To review the published data on ambulatory blood pressure in end-stage renal ...
White WB - - 1997
This issue of Blood Pressure Monitoring introduces our second year of publishing research papers devoted to original investigation in the discipliners of blood pressure measurement and variability. In this foreword, we would like tio take the opportunity to review some of the achievements from our first year of the Journal ...
Mueller UK - - 1997
OBJECTIVE: To examine the extent to which one session of repeated automated (30-45 min) blood pressure measurements in non-treated, hypertensive patients can be used to predict daytime ambulatory blood pressure (ABP). METHODS: Two hundred untreated black hypertensive patients (mean age 50.2+/-11.2) were retrospectively stratified on the basis of the daytime ...
Verdecchia P - - 1997
Writing an editorial on the clinical relevance of the diurnal rhythm of blood pressure bears a two-sided risk. There is little doubt that 24 h ambulatory monitoring (ABPM) is the only practical way to investigate the diurnal rhythm of blood pressure and that acceptance of ABPM by physicians and regulatory ...
Polónia JJ - - 1997
BACKGROUND: It is still under debate whether subjects with persistently elevated clinic blood pressure but normal ambulatory blood pressure, [white-coat hypertensives (WCH)] have a higher propensity for further development of ambulatory hypertension. METHODS: We prospectively evaluated for 3.5 years (from 26 up to 59 months) the transition of clinic and ...
Portaluppi F - - 1997
The organization of sleep activity in stages of different depth is reflected by consistent changes in blood pressure that account for the major part of the day-night blood pressure difference. On the other hand, different mechanisms may underlie dysregulation of nocturnal blood pressure. Cyclic variations in autonomic nervous system activity ...
Zanchetti A - - 1997
EVALUATION OF A SMOOTH BLOOD PRESSURE RESPONSE TO TREATMENT: Smooth or uniform blood pressure control is an obvious goal of antihypertensive therapy, but it is difficult to assess by the traditional clinic blood pressure measurements. Ambulatory blood pressure monitoring is therefore increasingly being used to evaluate new antihypertensive drugs and ...
Mansoor G A - - 1997
Hypertension is a key factor in the genesis and deterioration of many renal diseases and is also a risk factor for death in patients with end-stage renal disease. However, the standard methods of measurement are prone to variability, especially in patients undergoing dialysis. The technique of ambulatory blood pressure monitoring ...
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