Search Results
Results 251 - 300 of 912
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Nunes José Pedro - - 2003
Arterial hypertension is a very common disease, which acts as a risk factor for a number of other diseases. Experimental data in rats indicate that chronic arterial hypertension may be associated with a state of resistance to mortality from sepsis. Published data on human arterial hypertension and sepsis do not ...
Lindbaek Morten - - 2003
BACKGROUND: Ambulatory blood pressure monitoring was introduced more than 40 years ago and is accepted as a clinically useful method to evaluate the white coat effect in patients with suspected and established hypertension. AIM: To study the differences between blood pressure readings taken in the physician's office in the primary ...
Murtaugh Maureen A - - 2003
The rate of urinary albumin excretion is an important risk factor for kidney failure, stroke, and cardiovascular disease, perhaps because higher albumin excretion reflects endothelial cell dysfunction. The authors characterized urinary albumin excretion according to blood pressure, diabetes mellitus, and other factors in 2,582 Black and White participants in the ...
Muxfeldt Elizabeth S - - 2003
OBJECTIVE: Ambulatory blood pressure monitoring (ABPM) is a tool to diagnose resistant hypertension (RH). The objective of this study is to describe the pattern of 24-h ABPM in patients using at least three anti hypertensive drugs without blood pressure (BP) control, classifying them as true RH or white-coat RH. METHODS: ...
Söderlund Hedvig - - 2003
The occurrence of cerebral white matter hyperintensities (WMHs), and their associations with blood pressure, episodic memory, and other cognitive tasks, were examined in a population-based sample of 123 individuals between 64 and 74 years old. Magnetic Resonance Imaging (MRI) detected subcortical and periventricular hyperintensities in 90% and 67% of the ...
Gan S K E - - 2003
AIM: To study the prevalence of hypertension and "white coat hypertension" in young adult Asian males, and identify the associated risk factors. METHODS: Population-based descriptive analysis of 3,352 Singapore military conscripts presenting consecutively for medical screening, followed by case-control study of subjects with elevated blood pressure. A standard protocol for ...
Feig Daniel I - - 2003
Experimental animal models suggest that uric acid might have a pathogenic role in the early development of primary hypertension. We hypothesized that serum uric acid is correlated with blood pressure in children with new-onset, untreated, primary hypertension. We evaluated 125 consecutive children referred to the Baylor Pediatric Renal Program for ...
Thomas Randal J RJ Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, Minn 55905, USA. - - 2003
To assess the relationship between positional blood pressure change and 8-year incidence of hypertension in a biracial cohort of young adults. Participants from the Coronary Artery Risk Development in Young Adults (CARDIA) study with complete data from year 2 (1987-1988), year 5 (1990-1991), year 7 (1992-1993), and year 10 (1995-1996) ...
Hajjar Ihab - - 2003
CONTEXT: Prior analyses of National Health and Nutrition Examination Survey (NHANES) data through 1991 have suggested that hypertension prevalence is declining, but more recent self-reported rates of hypertension suggest that the rate is increasing. OBJECTIVE: To describe trends in the prevalence, awareness, treatment, and control of hypertension in the United ...
Finneran James J - - 2003
An acoustic backscatter technique was used to estimate in vivo whole-lung resonant frequencies in a bottlenose dolphin (Tursiops truncatus) and white whale (Delphinapterus leucas). Subjects were trained to submerge and position themselves near an underwater sound projector and a receiving hydrophone. Acoustic pressure measurements were made near the thorax while ...
Nine Susan L - - 2003
Seventy-five predominately African American volunteers were enrolled in a community-based intervention program designed to lower blood pressure and HgbA1C levels in an African American population. Program components consisted of exercise, meal planning, weekly support groups, periodic cooking schools, and service coordination. Significant decreases in initial and 1-year values were seen ...
Manolio Teri A - - 2003
Accumulating evidence supports a causal role of hypertension for cognitive decline above and beyond its relationship to frank stroke. Hypertension-associated pathologic changes in the brain and its vasculature include vascular remodeling, impaired cerebral autoregulation, cerebral microbleeds, white matter lesions, unrecognized lacunar infarcts, and Alzheimer-like changes such as amyloid angiopathy and ...
Isezuo A S - - 2003
One hundred and seven consecutive Black Africans hypertensive heart failure patients made of 52 Gambians and 55 Nigerians (51 males + 56 females) aged 53.6 +/- 12.1 years were followed-up for 12 months or till death. One-year survival curve was determined using Kaplan-Meiers method. The survivors and the deceased were ...
Racette Lyne - - 2003
Glaucoma is one of the leading causes of blindness worldwide. Primary open-angle glaucoma (POAG) is the most prevalent form of glaucoma and has a particularly devastating impact in blacks. In the black American population, POAG prevalence is estimated to be six times as high in certain age groups compared to ...
Flack John M JM Department of Internal Medicine, Wayne State University, Detroit, Michigan 48201, USA. - - 2003
The purpose of this study was to evaluate the efficacy and tolerability of monotherapy with the selective aldosterone blocker eplerenone in both black and white patients with hypertension. Essential hypertension and cardiovascular-renal-target organ damage is more prevalent in black than white adults in the U.S. Black (n = 348) and ...
Sherwood Andrew - - 2003
BACKGROUND: African Americans typically exhibit greater systemic vascular resistance (SVR) than do white individuals in response to laboratory challenges that raise blood pressure (BP). However, ethnic differences in ambulatory blood pressure (ABP) regulation have not been examined. METHODS: We monitored ABP in a sample of 10 African American and 10 ...
Pitiriga Vassiliki C - - 2003
Previous studies have linked essential sustained hypertension with Chlamydia pneumoniae (C. pneumoniae) and changes in intima-media thickness (IMT) of carotid arteries. The aim of this study was to examine if similar associations exist in subjects with white-coat hypertension. C. pneumoniae IgA and IgG antibody titers were measured in 125 patients ...
Hond Elly Den - - 2003
OBJECTIVE: We examined to what extent self-measurement of blood pressure at home (HBP) can be an alternative to ambulatory monitoring (ABP) to diagnose white-coat hypertension. METHODS: In 247 untreated patients, we compared the white-coat effects obtained by HBP and ABP. The thresholds to diagnose hypertension were > or = 140/> ...
Pierdomenico S D - - 2003
Although white coat hypertension has been widely studied in the last years, its risk profile is not yet completely clear. The aim of this study was to evaluate circulating homocysteine levels, an emerging cardiovascular risk factor, in subjects with white coat and sustained hypertension. We selected 31 sustained hypertensive subjects, ...
Davies S J C - - 2003
The authors aimed to determine whether hypertensive patients with panic attacks or panic disorder have a larger white coat effect (difference between clinic blood pressure measured under standard conditions and mean daytime ambulatory blood pressure) than hypertensive patients without panic attacks. White coat effect was compared in a hospital hypertension ...
Schutte A E AE School of Physiology, Nutrition and Consumer Science, Potchefstroom University for CHE, Potchefstroom, South - - 2003
The aim of the study was to determine which dietary factors contribute to the impairment of arterial compliance, stroke volume, total peripheral resistance and pulse pressure, and could thereby be identified as risk markers in the development of hypertension in black children. Children aged 10 to 15 years were recruited ...
Vupputuri Suma - - 2003
Chronic lead exposure has been associated with elevated blood pressure in epidemiological studies. It is not known whether the previously observed relation between blood lead and hypertension persists after significant reductions have been made in environmental lead contamination. We examined the relation between blood lead levels and blood pressure in ...
Den Hond Elly - - 2003
BACKGROUND: Gender, age, smoking, race, and body mass index have been reported to determine the ambulatory white-coat effect (WCE) and white-coat hypertension (WCH). METHODS: Baseline conventional, day-time ambulatory and self-measured home blood pressure measurements from the THOP trial were used to study the effect of gender, age, body mass index, ...
Harrell Jules P - - 2003
A growing body of research explores the impact of encounters with racism or discrimination on physiological activity. Investigators have collected these data in laboratories and in controlled clinical settings. Several but not all of the studies suggest that higher blood pressure levels are associated with the tendency not to recall ...
Walters R J L RJ Department of Clinical Neurology, St Mary's Hospital, London W2 1NY, - - 2003
To determine whether patients presenting with a first transient ischaemic attack (TIA) subsequently show increased rates of brain atrophy compared with age matched controls; and to assess potential risk factors for brain atrophy in this group. 60 patients with a first, isolated TIA and 26 age and sex matched controls ...
Casteletto Valeria - - 2003
We study the stability of soap films of a nonionic surfactant under different applied capillary pressures on the film. Depending on the pressure, either a thick common black film (CBF), or a micro-scopically thin Newton black film (NBF) is formed as a (metastable) equilibrium state, with a first-order (discontinuous) transition ...
Ashaye Modele O - - 2003
Hypertension is a major risk factor for heart disease and stroke, the first and third-leading causes of death in the United States. This review discusses the magnitude of the problem, its epidemiology, and the evaluation and management of hypertension as recommended by the reports of the Joint National Committee on ...
Schmidt Reinhold - - 2003
A three-year follow-up of 273 participants (mean age 60 years) of the Austrian Stroke Prevention Study provides the first information on the rate, clinical predictors, and cognitive consequences of MRI white-matter lesions in elderly individuals without neuropsychiatric disease. Lesion progression was found in 17.9% of individuals over a time period ...
Ko N U - - 2003
There is a shortage of data addressing the clinical characteristics of patients with arteriovenous malformations (AVMs) who present with intracerebral hemorrhages (ICH). A retrospective cohort study of members of a large, pre-paid health care program was conducted to identify factors that distinguish ICH secondary to cerebral AVMs from all other ...
Karter Y - - 2003
The aim of this study was to perform an extensive evaluation of target organ status, metabolic abnormalities and hemodynamic alterations in white coat hypertension (WCH). Fifty normotensive (NT), 90 WCH (ambulatory daytime blood pressure < 135/85 mmHg) and 101 hypertensive (HT) subjects underwent extensive biochemical, echocardiographic, fundoscopic examination. In a ...
MacDonald Mary B - - 2003
Patients who participated in an initial study in a hypertension outpatient clinic in a tertiary care hospital in Western Canada were approached three years later to participate in a follow-up study. The aim of this study was to describe changes, over three years, in office (OBP) and ambulatory blood pressure ...
Tobiska Susanne - - 2003
The objective of this study was to investigate the influence of atomizing air pressure on the coating uniformity and the quality of the film coat. As parameters describing the coating uniformity, the mass variance of the film coated tablets and the variance of the film thickness within a tablet were ...
Alves Leila M - - 2003
White coat hypertension is a clinical phenomenon characterized by elevated arterial blood pressure during a visit to the physician. In this study, we will review the key published studies related to this concept as they evaluate and compare morphological and behavioural characteristics between normotensive individuals, essential hypertension, and white coat ...
DeCarli Charles - - 2003
Multiple epidemiological and brain imaging studies show a strong association between elevations in systolic blood pressure and lesions of cerebral white matter. The association between white-matter lesions and systolic blood pressure persists even if individuals are receiving treatment, suggesting that these individuals may be undertreated. In addition, these studies suggest ...
Schutte A E - - 2003
Although clinical hypertension occurs less frequently in children than in adults, ample evidence supports the concept that the roots of essential hypertension extend back to childhood. Since little is available in the literature on causal dietary factors of hypertension in children, this study hypothesised that certain dietary factors can be ...
Pickering Thomas G - - 2002
The white coat effect is conceived as a measure of the blood pressure response to a clinic visit, but there is no agreement as to exactly how it should be defined. The most widely used definition is the difference between the average clinic and daytime ambulatory blood pressures, but other ...
Knox Sarah S - - 2002
This study investigated the association between cardiovascular reactivity and subsequent ambulatory blood pressure in 316 black and white men and women in the Coronary Artery Risk Development in Young Adults (CARDIA) Study. Cardiovascular laboratory reactivity was examined in subjects 20 to 33 years old, and ambulatory blood pressure and heart ...
Agyemang C - - 2002
The objective of the study was to review published evidence on whether blood pressure levels and the prevalence of hypertension are higher or lower in South Asian adults living in the UK as compared to white populations. A systematic literature review was carried out using MEDLINE 1966-2001, EMBASE 1980-2001, and ...
Pierdomenico Sante D - - 2002
BACKGROUND: Endothelial dysfunction is a frequent finding in essential hypertension. The aim of this study was to assess endothelial function, by evaluating circulating nitric oxide metabolites, nitrate plus nitrite (NOx), and endothelium-dependent vasodilation (EDD), in white coat hypertension in comparison with sustained hypertension and normotension. METHODS: We selected 22 sustained ...
Schmidt-Lucke Caroline - - 2002
The role of low frequency flowmotion in physiological or pathophysiological settings is unclear. We performed various series of experiments in young anesthetized New Zealand white (NZW) rabbits. Many animals exhibited flowmotion during control conditions. However, they very often seemed to be in unstable physiological conditions, and our preset inclusion criteria ...
Zakopoulos Nikos A - - 2002
OBJECTIVES: The difference between clinic and daytime ambulatory blood pressure is referred to as the white-coat effect. In this study, we investigated (i) the magnitude of the white-coat effect in subjects with different daytime ambulatory blood pressure levels, and (ii) the association of the white-coat effect with left ventricular mass. ...
Sermswan Anawat - - 2002
Prevalence of white-coat hypertension varies approximately 20 per cent among mild hypertensives. When white-coat hypertensives are prescribed antihypertensive medication, there is usually a decrease in clinic blood pressure (BP), but little or no change in 24 hours blood pressure (ABPM). The objective of the study was to test the hypothesis ...
Gómez-Cerezo Jorge - - 2002
Several studies have demonstrated that endothelial dysfunction is present in patients with essential hypertension. However, the presence of endothelial dysfunction in patients with white coat hypertension has not been studied. We evaluated the variation in the diameter of the brachial artery produced by flow-mediated dilation after a mechanical stimulus in ...
Diez Roux Ana V - - 2002
BACKGROUND: Few studies have examined how the longitudinal change in blood pressure associated with aging differs across social groups within industrialized countries. METHODS AND RESULTS: Data from the Atherosclerosis Risk In Communities Study were used to investigate differences in the incidence of hypertension and in aging-related changes in blood pressure ...
Kahn David F - - 2002
Presentation, response to therapy, and clinical outcome in hypertension differ according to race, and these observations could relate to differences in microvascular function. We examined forearm microvascular function in age-matched black (n=56) and white subjects (n=62) using intra-arterial agonist infusion and venous occlusion plethysmography. In normotensive subjects (n=70; 34 black ...
Den Hond E - - 2002
There is no general agreement as to whether low-level lead exposure increases blood pressure. The present study examined the correlation between blood pressure and blood lead in the NHANES III database (1988-1994). Analyses were performed for all adults (> or =20 years), and reported separately for white males (n = ...
Tabeta Isao - - 2002
This study was undertaken to clarify the status of the ACTH and cortisol responses to CRH in patients with white coat hypertension. White coat hypertension was defined as a difference between clinic blood pressure and ambulatory blood pressure of at least 20 mm Hg for systolic blood pressure and/or 10 ...
Leary Andrew C - - 2002
OBJECTIVE: The aim of this study was to test the hypothesis that blood pressure (BP) reactivity to the stress of a clinic visit, the so-called white-coat effect, is associated with increased BP reactivity to physical activity. DESIGN: Patients referred to our clinic for assessment of hypertension prospectively underwent 24-h ambulatory ...
Smith Paul A - - 2002
OBJECTIVES: This study planned to establish whether sympathetic hyperactivity exists in white-coat hypertension (WHT) in the clinical setting, relative to matched groups with normotension (NT) and untreated essential hypertension (EHT). BACKGROUND: White-coat hypertension differs from EHT by the presence of normal ambulatory blood pressure. Sympathetic hyperactivity exists in patients with ...
Björklund Kristina - - 2002
BACKGROUND: The clinical significance of white-coat hypertension is still unclear. Moreover, no study has examined metabolic predictors of white-coat versus sustained hypertension. METHODS AND RESULTS: We investigated men (n=602) in a longitudinal population-based cohort who at age 70 years were identified as normotensive, white-coat hypertensive (office blood pressure [BP] > ...
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