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Results 501 - 550 of 2450
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Kline Cassie N - - 2008
The purposes of this study were to (1) investigate compression levels beneath an inelastic legging equipped with a new pressure-adjustment system, (2) compare the inelastic compression levels with those provided by a well-known elastic stocking, and (3) evaluate each support's gradient compression production. Eighteen subjects without venous reflux and 12 ...
London Gérald M - - 2008
Epidemiological studies have emphasized the relationship between blood pressure (BP) and the incidence of cardiovascular diseases. Severity of hypertension was in the past judged on the basis of diastolic BP. More recent epidemiological studies have directed attention to systolic pressure as a better guide to cardiovascular and all-cause mortality. Traditionally, ...
Geleijnse Johanna M - - 2008
This paper summarizes the current epidemiological evidence on coffee consumption in relation to blood pressure (BP) and risk of hypertension. Data from cross-sectional studies suggest an inverse linear or U-shaped association of habitual coffee use with BP in different populations. Prospective studies suggest a protective effect of high coffee intake ...
Block Gladys - - 2008
The prevalence of hypertension and its contribution to cardiovascular disease risk makes it imperative to identify factors that may help prevent this disorder. Extensive biological and biochemical data suggest that plasma ascorbic acid may be such a factor. In this study we examined the association between plasma ascorbic acid concentration ...
Nakamoto Hidetomo H Department of Nephrology, Saitama Medical School, Saitama, - - 2008
We have developed a new home blood pressure (BP) monitoring system by using cellular telephone and the Internet. All data of home BP and pulse rate were directly collected by I-converter date collecting system and sent online to a main server constructed in a central data center. The home doctor ...
Song Han Wook HW Korea Research Institute of Standards and Science, Doryong dong, Yusong gu, Taejeon, South Korea. - - 2008
Blood pressure is defined as the amount of force at unit area which the blood exerts on a wall of a blood vessel. The BP has a clinical importance as the basic index in the medical examination of patients. Especially, the percentage of the hypertensive is more than 15% in ...
Bia D D Physiology Department, School of Medicine, Republic University, General Flores 2125, PC: 11800, Montevideo, Uruguay. - - 2008
Mechanisms underlying the circadian profile of cardiovascular events (CE) are not totally understood. Whether circadian changes in arterial stiffness (AS) could be related to the circadian profile of CE remains to be investigated. As yet, there is no accepted way to measure circadian profiles or nocturnal-related and/or morning-related changes in ...
Liu Yinbo Y Joint Research Centre for Biomedical Engineering Department of Electronic Engineering, The Chinese University of Hong Kong, Hong - - 2008
Pulse arrival time (PAT) has been proposed for measuring blood pressure (BP) noninvasively and continuously. A challenge of the PAT-based BP measurement technique is to calibrate it individually. The objective of this study is to examine a previously proposed model-based calibration method utilizing hydrostatic pressure for BP estimation. A preliminary ...
Mourad J-J - - 2008
Arterial hypertension (HT) has been reported in all studies involving bevacizumab, an antiangiogenic agent designed to target vascular endothelial growth factor (VEGF). The mechanism underlying bevacizumab-related HT is not yet clearly understood. As far as endothelial dysfunction and microvascular rarefaction are hallmarks in all forms of HT, we tested the ...
Krishna Pushpa - - 2007
This study compares the blood pressure (BP) in young population of North India and South India. Age, height and sex specific BP was estimated for 6320 North Indian subjects aged 7-18 years and compared with BP values of South Indian subjects. North Indian boys and girls had lower diastolic BP ...
Amankwah Ernest - - 2007
Regular blood pressure (BP) measurements are required to identify people with hypertension and to optimally manage their cardiovascular risk. Analyses of data from the 2000-2001 Canadian Community Health Survey showed that most adult Canadians have had a BP assessment in the previous 2 years and few have never had one. ...
Hwang Eui-Seock - - 2007
BACKGROUND: The prevalence and clinical significance of white-coat hypertension (WCHT) and masked hypertension (MHT) are unknown in Koreans. Here we measure the frequency of WCHT and MHT in hypertensive subjects and identify the epidemiologic and/or clinical factors that predict it in Korean subjects. METHODS: This study is a retrospective analysis ...
Panerai Ronney B - - 2007
OBJECTIVES: The accuracy of noninvasive measurements of arterial blood pressure (BP), in comparison to intra-arterial recordings, is normally quantified by the bias, which is usually assumed to be a constant parameter. We tested the hypothesis that continuous beat-to-beat differences are not random and aimed to describe the temporal pattern of ...
Ohkubo Takayoshi - - 2007
Recent guidelines for the treatment of hypertension have all emphasized the importance of self-blood pressure (BP) measurements at home (home BP) in clinical applications of practice, research, and epidemiology. In the Ohasama study, a cohort study based on home BP, we have demonstrated several important findings to be incorporated in ...
Hajjar Ihab - - 2007
Inadequate dipping in nighttime blood pressure (BP) is associated with cerebrovascular disease. The authors aimed to determine whether inadequate nocturnal dipping was associated with abnormalities in cerebrovascular hemodynamics in individuals without stroke. Participants in this study underwent 24-hour ambulatory BP monitoring followed by morning transcranial Doppler measurements of blood flow ...
Myers Martin G - - 2007
Guidelines for the management of hypertension have started to include home blood pressure (BP) and 24-h ambulatory BP monitoring as preferred methods for diagnosing hypertension. The next step will be to incorporate automated office BP measurement into the algorithm for diagnosing hypertension. Recent studies support this approach with automated office ...
Willson Grant N - - 2007
This study examined the influence of electroencephalographic (EEG) arousal on the magnitude and morphology of the pressor response to Cheyne-Stokes respiration (CSR) in subjects with congestive heart failure (CHF). Thirteen subjects with stable CHF (left ventricular ejection fraction, 26 +/- 7%) and CSR (apnea-hypopnea index 52 +/- 15 h(-1)) underwent ...
Harrison W N - - 2008
This study aims to identify the extent of terminal digit bias in routinely recorded blood pressures (BP) across a number of different general practices and report on changes in terminal digit bias over a 10-year period. It also explores the effect this may have had on the mean recorded BP ...
Rose Adam J - - 2008
The term "clinical inertia" is used to describe the failure to manage a chronic condition aggressively enough to bring it under control. The underlying mechanisms for clinical inertia remain poorly understood. To describe one potential mechanism for clinical inertia, seen through the lens of clinician responses to a computerized hypertension ...
Trivedi Ranak - - 2008
The recovery phase of the stress response is an individual difference characteristic that may predict cardiovascular risk. The purpose of this study was to examine whether laboratory-based blood pressure (BP) recovery predicts ambulatory BP (ABP). One hundred and eighty-two participants underwent a standard laboratory stress protocol, involving a 20-min baseline ...
Soller Babs R - - 2008
Ten healthy human volunteers were subjected to progressive lower body negative pressure (LBNP) to the onset of cardiovascular collapse to compare the response of noninvasively determined skin and fat corrected deep muscle oxygen saturation (SmO2) and pH to standard hemodynamic parameters for early detection of imminent hemodynamic instability. Muscle SmO2 ...
Rodriguez Carlos J - - 2008
OBJECTIVE: To determine if nocturnal blood pressure (BP) dipping among non-Hispanic blacks is influenced by social support. Non-Hispanic blacks have higher rates of cardiovascular morbidity and mortality from hypertension and are more likely to have ambulatory blood pressure (ABP) that remains high at night (nondipping). METHODS: A total of 68 ...
Kivimäki Mika M Department of Epidemiology and Public Health, University College London, London WC1E 6BT, UK. - - 2008
To examine whether lower BP mediates the inverse association between organizational justice and incident coronary heart disease (CHD). Previous studies suggest lower blood pressure (BP) and reduced risk of CHD among employees with high organizational justice (the perception of being treated fairly by supervisors). Prospective occupational cohort study of 4250 ...
Falqui Valeria - - 2007
BACKGROUND: Target organ damage (TOD) is an often reversible subclinical condition that may precede major cardiovascular events in primary hypertensive patients. Furthermore, TOD has been shown to be a complex, multifactorial process which does not depend on blood pressure (BP) reduction alone. We therefore investigated the relationship between BP load, ...
Hashimoto Junichiro - - 2007
BACKGROUND: Pressure pulse waveform features may predict treatment-induced regression of left ventricular (LV) mass better than casual brachial blood pressure (BP). We compared predictive power for LV mass reduction between the putative optimal pulse waveform feature (pulse amplification) and the putative optimal brachial cuff measurement (self BP monitoring at home). ...
Komai Rie - - 2007
We previously reported that a resting heart rate measured at home (home HR) of >or=70 beats per minute was a powerful predictor of the risk of cardiovascular disease mortality, and identified factors affecting home HR in the general Japanese population. The present study examines factors affecting home HR in hypertensive ...
Kivimäki Mika M Department of Epidemiology and Public Health, University College London Medical School, London, United Kingdom. - - 2007
Hypertension is assumed to be one of the mechanisms through which job strain (a combination of high work demands and low job control) increases coronary heart-disease risk. However, direct tests of this hypothesis are lacking. We examined whether hypertension mediated the association between job strain and incident coronary heart disease ...
Chen Yi-Chun - - 2008
Carotid intima-media thickness (cIMT) is commonly used as a surrogate for atherosclerosis. Since cIMT is correlated with hypertension and microalbuminuria, we tested the hypothesis that there is a genetic basis for the observed relationship between cIMT, blood pressure (BP), and renal function within high risk families. Six hundred and three ...
Agarwal Rajiv - - 2008
Blood pressure (BP) measurements obtained outside the dialysis unit are prognostically superior. Whether it is the greater number of measurements made outside the dialysis unit that correlates with prognosis or whether BPs outside dialysis units are ecologically more valid is unknown. A prospective cohort study was conducted in 133 patients ...
Matayoshi Tetsutaro - - 2008
BACKGROUND: Though brain natriuretic peptide (BNP) is widely used as a clinical marker of cardiac function, there is considerable confusion in the interpretation of its value in hemodialysis (HD) patients whose BNPs are often elevated without cardiac diseases. The aim of the present study is to examine the predictive value ...
Trivedi Hariprasad S - - 2007
Hemodynamic instability is a common problem during hemodialysis (HD). The effect of blood flow rate (BFR) on blood pressure (BP) during HD has not been previously evaluated. Subjects receiving HD for the treatment of renal failure were enrolled (n=34). For each patient, during the last hour of 2 consecutive HD ...
Agarwal Rajiv - - 2007
OBJECTIVE: To determine whether simultaneous consideration of pre and postdialysis blood pressure (BP) can improve the prediction of interdialytic ambulatory BP in hemodialysis patients, we analyzed BP obtained before and after dialysis using routine or standardized methods and by self-measurement at home in 104 hemodialysis patients. Evidence for effect modification ...
Lu Fangxian - - 2007
The purpose of this study was to determine whether fetal programming of adult blood pressure is altered in a previously characterized mouse model of preeclampsia that was induced by sFlt-1. CD-1 mouse mothers at day 8 of gestation were injected with an adenovirus carrying Flt 1-3 (10(9) plaque-forming units) or ...
White William B - - 2007
BACKGROUND: The circadian rhythm of blood pressure (BP) is associated with a high span during the awake period and a low span during the sleep period. Of interest is that cardiovascular (CV) events occur more frequently in the early morning period, the time when BP and heart rate rise steeply. ...
Verheyden Bart - - 2007
NTG (nitroglycerine) is used in routine tilt testing to elicit a vasovagal response. In the present study we hypothesized that with increasing age NTG triggers a more gradual BP (blood pressure) decline due to a diminished baroreflex-buffering capacity. The purpose of the present study was to examine the effect of ...
Bilo Grzegorz - - 2007
OBJECTIVES: To assess quantitatively the relationship between nocturnal blood pressure (BP) fall and 24-h BP variability; to propose a new method for computing 24-h BP variability, devoid of the contribution from nocturnal BP fall; and to verify the clinical value of this method. METHODS AND RESULTS: We analysed 3863 ambulatory ...
Pimenta Eduardo - - 2007
BACKGROUND: Aldosterone excess has been reported to be a common cause of resistant hypertension. To what degree this represents true treatment resistance is unknown. OBJECTIVE: The present study aimed to compare the 24-h ambulatory blood pressure monitoring (ABPM) levels in resistant hypertensive patients with or without hyperaldosteronism. METHODS: Two hundred ...
Yarows Steven A - - 2007
PURPOSE: To determine whether the HoMedics Model BPA-300 meets American Association for the Advancement of Medical Instrumentation (AAMI) accuracy standards. METHOD: Simultaneous auscultatory measurements by two observers using a mercury manometer were obtained in participants during measurement with the HoMedics Model BPA-300. Triple measurements were obtained after a minimum of ...
Yang Qiong - - 2007
OBJECTIVE: To investigate the contribution of the mitochondrial genome to hypertension and quantitative blood pressure (BP) phenotypes in the Framingham Heart Study cohort, a randomly ascertained, community-based sample. METHODS: Longitudinal BP values of 6421 participants (mean age, 53 years; 46% men) from 1593 extended families were used for analyses. In ...
Shin Jaekyu - - 2007
An altered diurnal blood pressure (BP) pattern has been linked to the risk of developing heart failure (HF). We tested whether an altered diurnal BP pattern is associated with adverse outcomes (death or hospitalization for HF exacerbation) in patients with HF. A total of 118 patients with HF were enrolled ...
Harris David M - - 2007
More than 30% of the US population has high blood pressure (BP), and less than a third of people treated for hypertension have it controlled. In addition, the etiology of most high BP is not known. Having a better understanding of the mechanisms underlying hypertension could potentially increase the effectiveness ...
Majane Olebogeng H I - - 2007
AIM: The relationship between waist circumference (WC) and conventional blood pressure (BP) is independent of other clinical indices of adiposity. As ambulatory BP may offer more prognostic information than conventional BP, we aimed to identify whether indices of central adiposity are associated with ambulatory BP independent of other indices of ...
Fava Cristiano - - 2007
BACKGROUND: The W allele of the G460W polymorphism in the adducin-1 gene has been occasionally associated with increased blood pressure (BP). The aim of this study was to test whether the G460W variant is associated with BP levels and BP progression rate and whether G460W associations with BP are affected ...
Qureshi Ghazanfar - - 2007
Increased arterial stiffness is predictive of increased cardiovascular risk. The ambulatory arterial stiffness index is a new measure derived from 24-hour ambulatory blood pressure (BP) monitoring. We retrospectively studied 59 consecutive patients, (36 females; age 62 +/- 12 years), evaluated for hypertension in an academic cardiology practice. All had eight ...
Anan F - - 2007
BACKGROUND: Insulin resistance significantly correlated with a non-dipper type of essential hypertension. Thiazolidinediones (TZD), oral hypoglycaemic agents that act as insulin sensitizers, have been demonstrated in multiple in vivo and in vitro studies to possess antihypertensive properties. This study examined the efficacy of TZD therapy with pioglitazone at transforming the ...
Ommen Elizabeth S - - 2007
BACKGROUND AND OBJECTIVES: Most transplant centers exclude prospective living kidney donors with hypertension from donation. Centers routinely identify hypertension using BP measured in the clinic, but it is not clear that clinic BP accurately detects the presence or absence of hypertension in potential donors. We therefore conducted a prospective study ...
Lurbe Empar - - 2008
The goal of this commentary is to review the most relevant topics concerning the clinical utility of ambulatory blood pressure (BP) monitoring, such as the state of the art "reference BP values", the importance of the discrepant situations between office and ambulatory BP (white-coat and masked hypertension) and those of ...
Karavanaki K - - 2007
AIMS: The aim of our study was to assess diurnal blood pressure (BP) and heart rate variability and their possible relationship to the duration of the QT interval in adolescents with Type 1 diabetes. METHODS: In 48 normotensive, normoalbuminuric diabetic adolescents, with a mean (+/- sd) age of 17.3 (+/- ...
Kim Byung Jin - - 2007
BACKGROUND: Subjects with high normal blood pressure (BP: systolic, 130-139 mmHg or diastolic, 85-89 mmHg) have higher cardiovascular risks compared with individuals with normal BP (systolic BP, 120-129 mmHg or diastolic BP, 80-84 mmHg). In the present study the prevalence of microalbuminuria and cardiovascular risk factors, as well as factors ...
Furusawa Kazunari - - 2007
The purpose of the present study was to investigate the relationship between bowel maneuvers and autonomic dysreflexia (AD) in patients with cervical spinal cord injuries (CSCI). Fifteen consecutive, clinically stable patients with CSCI participated. We evaluated changes in blood pressure (BP), pulse rate (PR) and classic symptoms of AD before, ...
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