Search Results
Results 201 - 250 of 912
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Materson Barry J - - 2005
Dr. David Ayman (1901-1986) was an astute clinician and observer who challenged medical dogma by performing placebo-controlled studies and by meticulous measurement of blood pressure under standardized conditions. He demonstrated that almost all drugs reported to have an antihypertensive effect in the early 20th century had achieved nothing more than ...
Cantón Gádor - - 2005
BACKGROUND AND PURPOSE: The purpose of this study was to measure the changes in the intraaneurysmal fluid pressure and parent vessel flow characteristics resulting from packing the aneurysmal sac with hydrogel-coated coils. METHODS: Platinum coils coated with an expansible hydrogel were used to embolize a silicone model of the basilar ...
Dew Rachel E - - 2005
Neuroleptic Malignant Syndrome (NMS) rarely results from atypical antipsychotic therapy. To date, no information is available on the incidence of NMS with aripiprazole, a newer neuroleptic. To examine the results of a trial of aripiprazole administered to a 13-year-old Mexican-American girl during the course of NMS. Vital signs and laboratory ...
McFarland Michael J - - 2005
To effectively reduce the environmental compliance costs associated with meeting specific requirements under the Aerospace Manufacturing and Rework Facility's National Emission Standard for Hazardous Air Pollutants rule, the U.S. Environmental Protection Agency's (EPA) Data Quality Objective (DQO) process has been proposed as a suitable framework for developing a scientifically defensible ...
den Heijer T - - 2005
BACKGROUND: Blood pressure level is associated with the risk of clinical Alzheimer disease (AD), yet the underlying mechanisms are unclear. High blood pressure levels may cause cerebral small-vessel pathology, which contributes to cognitive decline in patients with AD. Alternatively, in persons with high blood pressure, increased numbers of neurofibrillary tangles ...
Sloan Richard P - - 2005
The link between socioeconomic status (SES) and health is widely recognized but the pathophysiologic mechanisms are not well understood. We tested the hypothesis that parasympathetic nervous system (PNS) regulation is one such mechanism. In a cross-sectional study, electrocardiogram-derived RR interval variability (RRV), a non-invasive index of cardiac PNS regulation, and ...
Djoussé Luc - - 2005
Dietary linolenic acid has been shown to be associated with coronary artery disease. However, limited data are available on its effects on blood pressure. We used data from 4594 white participants (aged 25 to 93 years) in the National Heart, Lung, and Blood Institute (NHLBI) Family Heart Study to evaluate ...
Korf Esther S C - - 2005
BACKGROUND: Vascular factors are recognized as important risk factors for Alzheimer's disease, although it is unknown whether these factors directly lead to the typical degenerative pathology such as medial temporal lobe atrophy. We set out to investigate the relation between blood pressure and medial temporal lobe atrophy in patients with ...
Hicks LeRoi S - - 2005
Prior literature has shown that racial/ethnic minorities with hypertension may receive less aggressive treatment for their high blood pressure. However, to date there are few data available regarding the confounders of racial/ethnic disparities in the intensity of hypertension treatment. We reviewed the medical records of 1,205 patients who had a ...
Bryant Allison S AS Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA. - - 2005
To determine whether the higher rate of preeclampsia previously reported in Black women is attributable to a higher rate of chronic hypertension in that group. Rates and severity of pregnancy-related hypertensive disease in Black and White women with and without chronic hypertension were reviewed from the medical records of our ...
Dolan E - - 2004
BACKGROUND: The prevalence of white-coat hypertension (WCH) is considerable in patients referred with elevated office blood pressure. Failure to recognise this phenomenon can lead to the inappropriate use of antihypertensive medications. We undertook this study to determine the profile of patients with WCH. METHODS: Baseline clinic and daytime ambulatory blood ...
Lemogoum Daniel - - 2004
BACKGROUND: Reduced beta-adrenergic sensitivity has been reported in black subjects. We hypothesized that beta-adrenergic stimulation by isoproterenol would affect pulse wave velocity (PWV), a marker of arterial stiffness, differently in black and white subjects. METHODS: Healthy normotensive black subjects (n = 21) matched for age, gender, height and body mass ...
Alper Arnold B AB - - 2005
Uric acid has been proposed as an important risk factor in the development of primary hypertension in humans. However, limited information is available linking childhood uric acid levels and blood pressure levels in adulthood. This study examined 334 whites and 243 blacks enrolled in the Bogalusa Heart Study as children ...
Li Xiangrong - - 2004
BACKGROUND: The association between left ventricular hypertrophy, an independent predictor of cardiovascular (CV) morbidity and mortality, and CV risk factors has been well documented in childhood and in adulthood. However, information on the relationship between left ventricular mass (LVM) in adults and longitudinal measurements of CV risk factors from childhood ...
Thomas KaMala S - - 2004
Several studies have demonstrated that blacks have heightened pressor sensitivity in response to the alpha-agonist, phenylephrine. However, studies examining whether psychosocial factors contribute to this difference are scarce. We examined the effects of job strain on pressor sensitivity in 76 whites and 46 blacks who were enrolled in a study ...
Wright A Jordan - - 2004
PURPOSE: To examine whether generation of 'socially appropriate' responses or divergent responses to continued peer pressure is a more effective deterrent of actual delinquency. METHODS: The sample of 129 urban adolescents included both boys and girls (51.9% male) and was predominantly black (48.%) and Hispanic (28.7%). They were studied longitudinally ...
van Dijk Ewoud J - - 2004
Cerebral white matter lesions are frequently observed on magnetic resonance imaging (MRI) scans in elderly people and are associated with stroke and dementia. Elevated blood pressure is presumed one of the main risk factors, although data are almost exclusively derived from cross-sectional studies. We assessed in 10 European cohorts the ...
Clark Rodney - - 2004
BACKGROUND: Relative to other ethnic groups in the United States Blacks have disproportionately higher rates of hypertension. Research suggest that perceived racism might moderate the relation between such Pearson variables as John Henryism and cardiac/vascular functioning. PURPOSE: This study examined the possible moderating influence of perceived racism on the John ...
Nakashima Takao - - 2004
It remains unclear whether white-coat hypertension is associated with vascular organ damage (e.g., carotid arteriosclerosis) in the same way sustained hypertension is. We therefore compared the progression of carotid arteriosclerosis among Japanese individuals showing normal blood pressures, sustained hypertension or white-coat hypertension. A total of 30 subjects (mean age, 58 ...
Modesti Pietro A - - 2004
Population studies revealed significantly lower levels of hypertension among rural community than both semi-urban and recently urbanized communities, and much of the difference was attributed to environmental factors. Migration studies revealed that increased sodium consumption is a key factor for the development of hypertension in some ethnic group, and people ...
Urbina E M - - 2004
Decreased arterial elasticity, an independent risk factor for cardiovascular (C-V) disease, is associated with C-V risk factors in middle-aged and older individuals. However, information is limited in this regard in young adults. This aspect was examined in a community-based sample of 516 black and white subjects aged 25-38 years (71% ...
Chaturvedi Nish - - 2004
OBJECTIVE: People of Black African descent have greater risks of hypertensive target organ damage than would be anticipated for given levels of blood pressure. Arterial stiffness may further account for ethnic differences in risk. DESIGN: Cross-sectional study. SETTING: Population based, London, UK. PARTICIPANTS: One hundred and three Europeans and 99 ...
Bleil Maria E - - 2004
OBJECTIVE: To determine whether anger-related personality traits are associated with carotid artery atherosclerosis in untreated hypertensive patients. METHODS: Study participants were 237 men with elevated blood pressure (systolic 140-180 mm Hg and/or diastolic 90-110 mm Hg) but untreated for hypertension. Average age was 56 years; 80% of subjects were white. ...
Hicks LeRoi S - - 2004
The relationship between blood pressure control and racial differences in the processes of hypertension care have not been well examined. We reviewed medical records of 15 768 visits to 12 general internal medicine clinics during July 1, 2001 to June 30, 2002 to determine whether visits were adherent to the ...
Fields Larry E - - 2004
This study aims to estimate the absolute number of persons with hypertension (the hypertension burden) and time trends using data from the National Health and Nutrition Examination Survey of United States resident adults who had hypertension in 1999 to 2000. This information is vitally important for health policy, medical care, ...
Gómez-Angelats Elisenda - - 2004
BACKGROUND: It is recognized that blood pressure (BP) variability has prognostic significance in determining target organ damage and cardiovascular mortality and morbidity. The aim of this study was to analyze the association between blood pressure variability and the presence of silent cerebral white matter lesions in middle-aged asymptomatic essential hypertensives. ...
Brown Debra J - - 2004
The purpose of this study was to examine the stress process in Black Americans by exploring chronic stress, emotions, age, body mass index, and blood pressure within the context of gender and socioeconomic position (SEP). The convenience sample of middle-class Black Americans ( N = 211) ranged from ages 25 ...
Uzun H - - 2004
Oxidative stress in sustained hypertension was shown with several biochemical parameters. Oxidized low-density lipoprotein (oxLDL) plays an important role during the atherosclerosis process and paraoxonase (PON1) can significantly inhibit lipid peroxidation. Serum PON1 activity, oxLDL and malondialdehyde (MDA) concentrations and their relationship with serum lipid parameters and systolic and diastolic ...
Gerber Patricia - - 2004
Common marmosets exhibit under captive conditions socially monogamous propensities. During confrontation with opposite-sexed stranger, in the presence of the pairmate, common marmosets often respond aggressively. However, in the absence of their mates, males actively solicit contact and even sexual interactions with strange females whereas mated females are indifferent to strange ...
Gregory Joshua A - - 2004
Sturgeons are primitive bony fishes and their hearts have structural features found in other primitive fishes. Sturgeons have a pericardioperitoneal canal (PPC), a one-way conduit into the peritoneum. A PPC also occurs in elasmobranchs (sharks and rays) and studies with that group demonstrate that pericardial pressure and pericardial fluid loss ...
Ben-Dov Iddo Z - - 2004
BACKGROUND: Pulse pressure is a derivative of arterial stiffness. We have previously demonstrated ambulatory pulse pressure to be relatively independent from the blood pressure (BP) lowering during sleep, and thus of a neurogenic effect. On the other hand, white coat BP effects are thought to involve neurogenic activation. The aim ...
Campia Umberto - - 2004
BACKGROUND: The pathogenesis of essential hypertension in blacks may differ from that in whites. In particular, black patients usually present with a salt-sensitive, low-renin form, which in animal models is associated with enhanced activity of endothelin-1 (ET-1). This study aimed to assess whether ethnic differences exist in the vascular activity ...
Kizer Jorge R - - 2004
The degree to which ethnic differences in left ventricular structure among hypertensive adults are independent of clinical and hemodynamic factors remains uncertain. We assessed whether left ventricular mass and geometry differ between black and white hypertensives after accounting for differences in such factors. Our study group comprised 1060 black and ...
Augustovski Federico A - - 2004
BACKGROUND: The white-coat effect is a common phenomenon in hypertensive patients, and there is no current useful office test to detect it. METHODS: This was a cross-sectional study. We evaluated the deep-breath maneuver at the office as a diagnostic test of the white-coat effect. Participants included 83 adult patients with ...
Mokwe Evan - - 2004
Race has been considered an important factor in determining blood pressure response to treatment and selection of antihypertensive drug therapy. Data collected during a clinical trial that evaluated rapidity of medication up-titration with blood pressure response to monotherapy with the angiotensin-converting enzyme (ACE) inhibitor quinapril were used to characterize response ...
Mzayek Fawaz - - 2004
PURPOSE: To study the relationship between low birth weight and the subsequent development of cardiovascular risk factors and to compare this relationship between African-Americans and whites at 7 to 21 years of age. METHODS: The relationship of birth weight with cardiovascular risk factors, namely, systolic and diastolic blood pressure (BP), ...
Theal Michael - - 2004
Mitral valve prolapse (MVP) was reported to be a common disorder occurring in 5% to 15% of the general population and to be frequently associated with serious complications. The reported high prevalence and complication rates of MVP have been challenged recently by the findings of the Framingham Heart Study, which ...
Fernander Anita F - - 2004
The John Henryism hypothesis posits that individuals who actively cope with psychosocial stressors in the face of low socioeconomic resources are more likely to exhibit higher blood pressure levels than those with greater socioeconomic resources. It has been proposed that John Henryism may contribute to the disproportionately high rates of ...
Franke Warren D - - 2004
This study tested the hypothesis that normotensive black males differ from white males in their autonomic and cardiovascular responses to severe orthostatic stress. College age men (9 blacks, 9 whites) underwent graded lower body negative pressure (LBNP; 10 mmHg steps of 6 min each) to either -100 mmHg or presyncope. ...
Stergiou G S - - 2004
An algorithm has been proposed for the detection of white coat hypertension among subjects with elevated blood pressure (BP) on at least three clinic visits using home BP monitoring (screening test) and, if this is low, ambulatory BP monitoring (diagnostic test). This study aims to test this strategy in practice. ...
Li Shengxu - - 2004
Increased arterial stiffness is an independent predictor of cardiovascular disease and mortality in middle-aged and older adults. However, limited data are available regarding the relationship of arterial stiffness in young adults with risk factors measured in childhood, adulthood, or as a cumulative burden from childhood to adulthood. This aspect was ...
Saadat Mostafa - - 2004
In order to show the alteration of blood pressure in subjects chronically exposed to natural gas containing sulfur compounds, the present study was done. The blood pressure of 94 (43 males, 51 females) of healthy individuals living in the polluted area of Masjid-i-Sulaiman (Khozestan province, southwest of Iran) was measured. ...
Kountz David S - - 2004
The Hispanic population in the United States comprises different and distinct cultures and genetic backgrounds. Most of the data on hypertension in this community are specific to Mexican Americans, in whom studies consistently show a lower prevalence of the disease compared with non-Hispanic whites and blacks. Mexican Americans have lower ...
Sica Domenic - - 2004
Black individuals are at significantly higher risk for hypertension and its sequelae, including end-stage renal disease and congestive heart failure, compared with other ethnic groups. The reason for this increased risk is likely multifactorial: although genetic differences may play a partial role in the etiology and pathophysiology of hypertension in ...
Negishi Hiroko - - 2004
Oxidative stress was reported to be involved not only in cardiovascular diseases, but also in hypertension. Epidemiologic studies indicated that tea consumption slightly reduces blood pressure. We conducted two studies to determine whether black and green tea can lower blood pressure (BP) in stroke-prone spontaneously hypertensive rats (SHRSP). Male SHRSP ...
Swift Pauline A - - 2004
High blood pressure occurs commonly in individuals of African origin, leading to an increased risk of cardiovascular and end-stage renal disease (ESRD). Black individuals frequently have low plasma renin activity, and their blood pressure responds well to salt reduction, suggesting that abnormalities in renal sodium handling may be important in ...
Hui Alan - - 2004
The Black Locust (Robinia Pseudoacacia) tree contain toxalbumins, robin and phasin, that exert their toxic effects by inhibition of protein synthesis. Despite the potential dangers of Black Locust intoxication, reports of human toxicity after ingestion are rare. We report the first human intoxication of Black Locust bark in North America ...
Raji Mukaila A - - 2004
BACKGROUND: Determining the optimal treatment for hypertension in very old patients requires better understanding of interethnic differences in patterns and predictors of antihypertensive drug use in this population. OBJECTIVE: To investigate interethnic variations in antihypertensive drug use in a tri-ethnic sample of community-dwelling adults aged > or =77 years. METHODS: ...
Cherniack M - - 2003
BACKGROUND: Vibration white finger (VWF) is characterised by arterial hyperresponsiveness and vasoconstriction following cold provocation. Several years after of removal from exposure, most subjects show improved finger systolic blood pressure (FSBP) under conditions of cold challenge, but continue to report cold hands and finger blanching. AIMS: To assess the underlying ...
Clark Rodney - - 2003
OBJECTIVE: This investigation explored the relationship of coping responses and parental history of hypertension to task-induced blood pressure changes. MATERIALS AND METHODS: The sample consisted of 215 black college student volunteers (median age = 25.95 y). During the speaking task, participants responded to standardized questions about perceptions of intra-ethnic and ...
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