Search Results
Results 451 - 500 of 911
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Jamerson K - - 1998
When initiating monotherapy for the treatment of essential hypertension, multiple determinants factor into the decision. The goal of treatment is to lower blood pressure and lessen the likelihood of progression to target organ failure. Physicians frequently prioritize these determinants and make decisions to initiate monotherapy based on the race of ...
Daniels S R - - 1998
The objective of this study was to assess the longitudinal changes in blood pressure in black and white adolescent girls and evaluate potential determinants of changes in blood pressure, including sexual maturation and body size. A total of 1213 black and 1166 white girls, ages 9 or 10 years at ...
Nakao M - - 1998
It remains unclear whether patients with white coat hypertension are more susceptible to mental stress than are those with essential hypertension. To compare the pressor responses to mental arithmetic between the two types of hypertension, 21 untreated female outpatients, aged 42 to 64 (mean 55) years, with hypertension, were studied. ...
Palatini P - - 1998
Controversy remains on whether white coat hypertension is a benign clinical condition or carries an increased risk of target-organ damage. Nine hundred forty-two stage I hypertensive subjects enrolled in the HARVEST trial underwent 24-hour ambulatory blood pressure monitoring and urine collection for albumin measurement. Reliable echocardiographic data were obtained in ...
Han K H - - 1998
The objective of this study is to evaluate the changes of diurnal blood pressure pattern after 8 weeks of red ginseng medication (4.5 g/day) by 24 hour ambulatory blood pressure monitoring. In 26 subjects with essential hypertension, 24 hour mean systolic blood pressure decreased significantly (p = 0.03) while diastolic ...
Devereux R B - - 1998
OBJECTIVES: To examine the adequacy of available evidence that: 1) left ventricular hypertrophy (LVH) and its regression influence the rate of cardiovascular events in hypertension; 2) carotid artery wall thickening and discrete plaque have comparable significance to LVH; and 3) black hypertensive patients have greater target organ damage than white ...
Koenig H G - - 1998
OBJECTIVE: To examine the relationship between religious activities and blood pressure in community-dwelling older adults. METHOD: Blood pressure and religious activities were assessed in a probability sample of 3,963 persons age sixty-five years or older participating in the Duke EPESE survey. Participants were asked if their doctor had ever informed ...
Li, Zhang Ting
Home blood pressure has recently become a widely used measurement in the diagnosis and management of hypertension. Home blood pressure readings often differ from blood pressure readings taken during patient clinic visits due to what is referred to as the "white coat" phenomenon. In other words, blood pressure readings taken ...
Arias J L - - 1997
Calcium phosphate coatings have been produced by pulsed laser deposition (PLD) at different water-vapour pressures. Rietveld refinement of X-ray diffraction (XRD) data allows us to determine that the structure of these coatings is apatitic with carbonate substitution for phosphate. The carbonate substitution decreases when the chamber pressure is raised, a ...
Mezzetti A - - 1997
The aim of this study was to evaluate whether sustained hypertensives with high clinic blood pressure, despite multiple drug treatment, show a true resistant hypertension or a "white-coat effect," and whether the pretreatment white-coat effect is maintained despite pharmacological therapy. The occurrence of resistant hypertension was determined in 250 consecutive ...
Bakris G L - - 1997
Previous studies demonstrate that vasopressin (V1) receptor antagonism lowers arterial pressure in blacks. This action of V1 receptor blockade may be mediated through various mechanisms including changes in intracellular calcium fluxes. This study was undertaken to test the hypothesis that inhibition of calcium entry may attenuate the reduction in arterial ...
Umweni A A - - 1997
This paper reports the frequency of tooth transposition in Nigerians in an attempt to determine the treatment needs of the population under study. The frequency of tooth transposition in this study is 0.135 per cent consisting of 4 males (36.36 per cent) and 7 females (63.64 per cent), which is ...
Hebert L A - - 1997
African Americans (blacks) have a disproportionately high incidence of end-stage renal disease due to hypertension. The Modification of Diet in Renal Disease (MDRD) Study found that strict blood pressure control slowed the decline in glomerular filtration rate (GFR) only in the subgroup of patients with proteinuria. The present report compares ...
Palatini P - - 1997
PURPOSE: This study was undertaken to investigate whether there is a relationship between the white-coat effect and the cardiovascular complications of hypertension. PATIENTS AND METHODS: In 1,013 consecutive borderline to severe hypertensive outpatients (889 men) with a mean age (+/-SE) of 33.6 +/- 0.5 years and a mean office blood ...
Ganguli M C - - 1997
In the United States, blacks have higher rates of hypertension than whites. A possible contributing factor to this higher rate of hypertension could be dietary differences between blacks and whites relating to sodium and potassium intake, which in turn could be related to socioeconomic differences between blacks and whites. Baseline ...
Vargas C M - - 1997
BACKGROUND: The National Health and Nutrition Examination Survey (NHANES) is the main data source for hypertension surveillance. However, because of a gap of almost 10 years between each NHANES, self-reported data from annual surveys need to be examined as an alternative data source. This study analyzes the validity of self-reported ...
Rockstroh J K - - 1997
Greater mortality and morbidity for cardiovascular events and renal complications have been reported in black than in white hypertensive patients. In this study we examined whether race per se affected markers of early target organ damage in a population of black and white hypertensive patients in whom casual as well ...
Chang N C - - 1997
This study was to assess left ventricular diastolic function in young white-coat hypertensive subjects < 50 years of age without hypertrophy. Hypertensive patients (systolic or diastolic blood pressure > or = 140 or > or = 90 mm Hg on all three visits) were defined as white coat if their ...
Markovitz J H - - 1997
BACKGROUND: Guanosine 3':5'-cyclic monophosphate (cGMP) is the second messenger of nitric oxide and atrial natriuretic factor, and mediates local vasodilatation. These vasodilatory factors are important in blood pressure regulation and possibly in the etiology of hypertension. Urinary cGMP levels among normotensive young adults have not previously been studied. SUBJECTS: A ...
Dang Qing-Lai - - 1997
Effects of shoot water potential (Psi) and leaf-to-atmosphere vapor pressure difference (VPD) on gas exchange of jack pine (Pinus banksiana Lamb.), black spruce (Picea mariana (Mill.) B.S.P.), and aspen (Populus tremuloides Michx.) were investigated at the northern edge of the boreal forest in Manitoba, Canada. Laboratory measurements on cut branches ...
Lang C C - - 1997
Enhanced sympathetic reactivity may predispose blacks to the development of hypertension and may occur because of increased sympathetic stimulation and/or attenuated sympathoinhibition. A potential site for such attenuated sympathetic inhibition may be at the level of central alpha2-adrenergic receptors, which play an important role in the feedback inhibition of norepinephrine ...
Jiang X - - 1997
The distribution of circulating insulin-like growth factor-1 (IGF-1) and its relationship to blood pressure was examined in a community study of 1073 biracial (black-white) adolescents aged 11 to 18 years. Girls of both races displayed higher levels of plasma IGF-1 than did their male counterparts (P < .01), independent of ...
Hasler E - - 1997
Altitude affects blood pressure (BP) depending on duration and absolute altitude of exposure. Until now changes in BP during exposure to altitude were studied only in Caucasians. It is not known whether BP is affected differently in black and white people in response to altitude. During a 6-day climb on ...
Bodey A R - - 1997
To be clinically reliable, blood pressure readings taken in quiet surroundings with good technique from healthy, unstressed subjects accustomed to the procedure, should be reasonably constant between occasions. Apart from changes attributable to age or stress, sustained rises suggest hypertension. Yet it is increasingly realised that arterial pressure shows great ...
Calhoun D A - - 1997
This laboratory recently reported that the blood pressure and muscle sympathetic nerve activity (MSNA) responses to cold pressor testing are greater in normotensive blacks than in age- and weight-matched normotensive whites. The present study was designed to determine the relationship between race, family history of hypertension, and sympathetic response to ...
Schmieder R E - - 1997
As greater mortality and morbidity from target organ damage in arterial hypertension have been reported for black than for white hypertensives, we examined in a matched-pair analysis whether race per se affected markers of early target organ damage at similar levels of blood pressure. After controlling for the confounding factors ...
Opie L H - - 1997
Nisoldipine coat core (CC) is a long-acting dihydropyridine with good tolerability. Ambulatory blood pressure measurements in a large, South African multicenter trial show that it has an excellent trough:peak ratio, and that it reduces the early morning rise in blood pressure without any tachycardia. Nisoldipine CC is an effective antihypertensive ...
Sudhir K - - 1997
Acute vasopressor responses to stress are adrenergically mediated and hence potentially subject to differential modulation by dietary potassium and sodium. The greater vasopressor responsiveness in blacks compared with whites might then be consequent not only to a high dietary salt intake but also to a marginally reduced dietary potassium intake. ...
Nielsen F S - - 1997
OBJECTIVE: Early data have suggested a high prevalence of white coat hypertension (approximately 50%) in NIDDM patients. To study this phenomenon further, we determined the prevalence of white coat hypertension in NIDDM patients with normo- or microalbuminuria or with diabetic nephropathy. RESEARCH DESIGN AND METHODS: Three groups of hypertensive NIDDM ...
Bloem L J - - 1997
A variant of the angiotensinogen gene (AGT) that encodes for threonine at codon 235 (T235) has been associated with a higher serum angiotensinogen concentration and with hypertension in white subjects. The frequency of T235 is about two times higher in blacks than whites, suggesting that AGT may contribute to the ...
Mikkelsen K L - - 1997
This study shows the association between smoking and both office and ambulatory blood pressure. By means of stratification, a uniform number of subjects of both sexes and spanning 6 decades (aged 20 to 79 years) were recruited randomly from the local community register. A total of 352 subjects participated, including ...
- - 1997
Health-related behaviors that reduce the risk of cardiovascular disease should be encouraged for all children and their families. Physicians should monitor blood pressure, counsel patients about appropriate nutrition and exercise, and emphasize the importance of not smoking. Because black adults in the United States have an increased prevalence, morbidity and ...
Cowan T - - 1997
ABPM automatically records blood pressure at preset intervals over a 24-hour period. By establishing average blood pressure, cases of white-coat hypertension and borderline hypertension can be identified. The use of ABPM is likely to increase in the near future, therefore it is important that nurses become more aware of the ...
Osei K - - 1996
We sought to examine the association of insulin, insulin sensitivity, and blood pressure using ambulatory blood pressure monitor in three ethnically distinct populations. The study population comprised the following. Group 1 (n = 31): African-Americans; Group 2 (n = 27): recent African immigrants; and Group 3 (n = 31): white ...
Prasad N - - 1996
BACKGROUND: The white-coat response can be identifiede on ambulatory blood pressure (ABP) monitoring (ABPM) and it is seen for around 2 h if the ABPM period is started in the hospital. The white-coat response to ABPM can be calculated by subtracting the 25th h ABP from the 1st h ABP; ...
Landemore G - - 1996
Very high pressure freezing and cryosubstitution of Kurloff cells preserves the ultrastructural morphology of Kurloff bodies, particularly the myelin figures, as shown by embedding in epoxy resin and conventional postembedding staining. It also preserves the Kurloff body proteoglycans as more expanded spindle-like shapes than does fixation with formaldehyde at atmospheric ...
Steyn K - - 1996
Hypertension prevalence, treatment status and factors relating to high blood pressure were determined in an urban black community of the Cape Peninsula, South Africa. A study population of 986 subjects aged 15-64 years was randomly selected. Blood pressure, height, weight and serum cholesterol levels were measured, while demographic information, personal ...
Soma J - - 1996
Hemodynamic alterations associated with the blood pressure response in subjects with white coat hypertension may provide insight into the pathophysiologic mechanisms of this condition. Systemic arterial hemodynamics were investigated with a recently validated method based on noninvasive estimates of aortic root pressure and flow in 28 subjects with white coat ...
Ducceschi V - - 1996
The aim of our study was to assess whether the presence of ventricular preexcitation affects the spatial distribution of ventricular recovery time. Recent reports support the hypothesis that QT and QTc dispersions (QTd and QTcd) can be reliably adopted as a non-invasive parameter to estimate regional discrepancies of ventricular repolarization. ...
Bond V V - - 1996
OBJECTIVE: To determine whether peripheral hemodynamic differences exist in young adult normotensive African Americans and white Americans with a positive and negative parental history of hypertension. METHODS: The participants were healthy men of whom 13 were African Americans and nine white Americans with a positive parental history and 19 were ...
Hayashi T - - 1996
Recently, the adverse effects of long working hours on the cardiovascular systems of workers in Japan, including "Karoshi" (death from overwork), have been the focus of social concern. However, conventional methods of health checkups are often unable to detect the early signs of such adverse effects. To evaluate the influence ...
Brenowitz E A - - 1996
This study tested the hypothesis that the relative proportion of neurons that are hormone sensitive in avian song control nuclei is related to the basic motor ability to sing, whereas the absolute number of such neurons is related to the complexity of song behavior. Either [3H]testosterone (T) or estradiol (E2) ...
Krieger N - - 1996
OBJECTIVES: This study examined associations between blood pressure and self reported experiences of racial discrimination and responses to unfair treatment. METHODS: Survey data were collected in year 7 (1992/93) of the Coronary Artery Risk Development in Young Adults (CARDIA) study, a prospective multisite community-based investigation. Participants included 831 Black men, ...
Hebert L A - - 1996
Previous studies have shown that African Americans (blacks) tend to have higher nocturnal blood pressure than European Americans (whites). The study presented here was undertaken to determine whether treatment of hypertension influences nocturnal blood pressure differently in blacks than in whites. To answer this question, this study measured nocturnal blood ...
Bang L E - - 1996
We studied the 24 h urinary excretion of albumin, transferrin, immunoglobulin G, and retinol-binding protein in individuals with essential hypertension, white coat hypertension, and normotension. In 56 individuals, we measured the 24 h ambulatory blood pressure (AMBP). The individuals could be divided into three groups: 26 hypertensives, 14 white coat ...
Ergul S - - 1996
Hypertension is more prevalent in blacks than whites, and the reasons for this difference remain unclear. To test whether endothelin may play a role in these racial variations, we analyzed plasma samples from black and white women and men with high blood pressure by an enzyme-linked immunoassay specific for endothelin-1 ...
Arnett D K - - 1996
OBJECTIVE: To describe the distribution of hypertension and its association with subclinical atherosclerosis in blacks and whites. DESIGN: Population-based survey of 15,587 middle-aged adults from the Atherosclerosis Risk in Communities Study. Ultrasound-measured carotid artery intima media thickness (IMT) was used to estimate atherosclerosis. Hypertension was defined by the revised fifth ...
Glen S K - - 1996
BACKGROUND: The increasing use of 24 h ambulatory blood pressure monitoring has allowed diagnosis of white-coat hypertension, in which blood pressures are higher on clinic measurements than on ambulatory monitoring. Treatment is not generally thought to be necessary for this disorder. However, there is evidence that patients with white-coat hypertension ...
Havas S - - 1996
In June 1994, the National Heart, Lung, and Blood Institute held a workshop entitled "Epidemiology of Hypertension in Hispanic Americans, Native Americans, and Asian/Pacific Islander Americans." The studies that served as the basis for the workshop along with a summary of two workshop panel discussions are being published as a ...
Saito I - - 1996
BACKGROUND: The rise in blood pressure associated with a clinic visit (the white-coat phenomenon) may result from anxiety or an alerting reaction. There is evidence to suggest that glucocorticoids may be involved in the mechanism of stress-related blood pressure elevation, but the relationship between the white-coat phenomenon and glucocorticoids has ...
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