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Results 401 - 450 of 657
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Zimmerman R S - - 1997
This article has discussed the classic hormonal causes of hypertension. Pheochromocytoma and hyperaldosteronism have been discussed, and a clinical approach to evaluation of patients for these problems has been presented. Other humeral factors that influence volume pressure homeostasis have been discussed. It is likely that pharmacologic agents affecting these other ...
Kasparian H - - 1997
METHODS: We measured the 2,3-diphosphoglycerate inraerythrocytic concentration in 24 normal controls and in 24 hypertensives before and following drug therapy. RESULTS: In hypertensives the 2,3-diphosphoglycerate concentration was higher than that of the controls (14.96 mumol/g Hb vs 13.26 mumol/g Hb respectively); the difference is statistically significant (p < 0.001). Following ...
Satish S - - 1997
BACKGROUND: The objective of the study was to identify factors associated with unawareness of hypertension among Mexican Americans age 65 years and older. METHODS: This was a population-based survey of 3,050 older Mexican Americans conducted in five Southwestern states in 1993-1994. An in-home interview included sociodemographics, review of medications, and ...
Dykman R A - - 1997
1. During habituation in 4 dogs to a new environment and attachment of apparatus, the blood pressure was at first high but fell from about 175 systolic the first day to about 135 on the ninth day. 2. In the first group of dogs used two years previously to form ...
Leavitt J A - - 1997
Bilateral disk swelling and marked peripapillary and macular exudates were found on routine ophthalmologic examination in a 12 1/2-year-old girl. Eleven months later, with persistent findings, her blood pressure was found to be extremely elevated. She had an Ask-Upmark kidney, a rare form of segmental renal hypoplasia. The Ask-Upmark kidney ...
Perneger T V - - 1997
OBJECTIVES: To describe patterns of hypertension history in patients with various types of end-stage renal disease (ESRD) and in persons with normal kidney function; and to identify risk factors for the diagnosis 'hypertensive ESRD'. DESIGN: A case-control study. SETTING: Population-based. PARTICIPANTS: Patients with ESRD due to hypertension (n = 214), ...
Al-Nozha M M - - 1997
A cross-sectional population-based survey employing a cluster sampling method and household visits by trained health teams investigated hypertension prevalence in the Kingdom among 13,700 individuals of both sexes in all age groups. The World Health Organization (WHO) definition of hypertension of = 160/95 mmHg was used; it was found that ...
Jensen E - - 1997
OBJECTIVES: To relate elevated blood pressure in 80-year-olds to symptoms, life satisfaction and survival. DESIGN: Examinations of medical, psychological and social factors every year between 80 and 86 years of age. SETTING: Primary health care in the city of Lund in southern Sweden. SUBJECTS: Three-hundred and thirty-three persons living in ...
Liao D - - 1996
BACKGROUND AND PURPOSE: White matter lesions (WML) may result from cerebral hypoperfusion or ischemia. We investigated the association of WML with blood pressure, hypertension, and its treatment and control. METHODS: A random sample of 1920 participants aged 55 to 72 years in the Atherosclerosis Risk in Communities Study (ARIC) was ...
Julius S - - 1996
Considerable progress has been made in our understanding of the role of the nervous system in human hypertension. The evidence for a widespread autonomic abnormality in the early phases of hypertension is overwhelming and excessive sympathetic activity is consistently present in such patients since their childhood. The enhanced sympathetic tone ...
Kouamé N - - 1996
OBJECTIVE: To determine the prevalence of overestimated and underestimated hypertension in a large sample of Canadians with mild-to-moderate hypertension before and after antihypertensive treatment. DESIGN: Data were retrieved from files of 1019 patients in whom clinic and ambulatory blood pressures had been measured both at the start and at the ...
Aardal S - - 1996
Clinically unsuspected pheochromocytoma is usually discovered either at autopsy or during surgical intervention for unrelated conditions, despite often enormous neoplastic masses producing and storing catecholamine (CA). In order to assess whether these tumours share some common features we have compiled data for six patients admitted to hospital without previous diagnosis ...
Okada T - - 1996
Hypertension has often been observed in patients with Guillain-Barré syndrome, and various underlying mechanisms have been implicated. We report the case of a child with the Guillain-Barré syndrome whose hypertension was associated with increases in both renin activity and circulating catecholamines. This case also appeared to be complicated by hypertensive ...
Le Y - - 1996
OBJECTIVE: To report two cases of hypertension related to amphotericin B infusion. CASE SUMMARY: A 63-year-old woman with Candida albicans bacteremia and an 84-year-old man with Aspergillus fumigatus pneumonia developed hypertension within minutes of amphotericin B administration. Both patients' blood pressure returned to baseline soon after the infusion of amphotericin ...
Brown M J - - 1996
1. Confusion between the criteria for defining and diagnosing hypertension may have misled the search for the causes of hypertension. 2. The systematic approach of molecular genetics appears to offer the best chance of explaining hypertension, but the attractions are partly offset by the large numbers required, and unproven record ...
Vaillant G E - - 1996
OBJECTIVE: This study was an effort to clarify both the psychological contributions to and the long-term consequences of uncomplicated essential hypertension. METHOD: The subjects were 193 healthy college students selected as sophomores and prospectively followed for over 50 years. Independent assessments of physical and mental health were made. RESULTS: Although ...
Schuster H - - 1996
Finding genes that cause human hypertension is not straightforward, since the determinants of blood pressure in primary hypertension are multifactorial. One approach to identifying relevant genes is to elucidate rare forms of monogenic hypertension. A relevant mutation may provide a rational starting point from which to analyse the pathophysiology of ...
Landsberg L - - 1996
Epidemiologic and clinical studies suggest an association between hyperinsulinemia (and insulin resistance) and hypertension. This relationship is not present in secondary forms of hypertension and may persist despite adequate antihypertensive therapy. Normotensive offspring of hypertensive parents are also, as a group, insulin resistant and hyperinsulinemic. The association of hyperinsulinemia (and ...
Chen Y F - - 1996
A sexually dimorphic pattern of blood pressure, in which the male develops higher blood pressure than the age-matched female, has been observed both in human subjects and in laboratory animals. The mechanism(s) of this sexual dimorphism of blood pressure are not completely understood. This review summarizes sex differences in the ...
Dodson P M - - 1996
With the advent of sophisticated ophthalmological investigations and a better understanding of the pathophysiology and clinical or prognostic correlates of the fundal lesions in hypertension, the limitations of early classification schemes using simple ophthalmoscopic appearances are increasingly apparent. This review describes the existing classification systems for hypertensive retinopathy and their ...
Lackland D T - - 1996
Hypertension is a world-wide public health problem. High blood pressure control efforts have been and are being implemented in order to reduce this burden of unnecessary death and morbidity in most societies. Standard methods of assessment will be developed for the measurement of the goals and strategies of hypertension control ...
Pipe A - - 1996
The significance of smoking in the hypertensive patient may be unappreciated. The risk of hypertension may be tripled in such patients. Tobacco addiction may also compromise the treatment of hypertensives. The importance of smoking cessation for hypertensive smokers cannot be overemphasized and should be seen as fundamental. Nicotine replacement therapy ...
Zampaglione B - - 1996
The prevalence and clinical picture of hypertensive urgencies and emergencies in an emergency department are poorly known. The aim of the present study was to evaluate the prevalence of hypertensive crises (urgencies and emergencies) in an emergency department during 12 months of observation and the frequency of end-organ damage with ...
Fallo F - - 1996
The effect of a surgical cure of hypercortisolism on hypertension in 54 patients with Cushing's syndrome was assessed. The correlation between preoperative duration of hypertension and posttreatment blood pressure was significant (P < .01). Restoration of normal cortisol was associated with blood pressure normalization in 39 out of 54 cases. ...
Chichibu S - - 1995
1. Electroencephalogram (EEG) of stroke-prone spontaneously hypertensive rats (SHRSP) and M(malignant)-SHRSP were analysed for excitability changes in the cerebral neuronal circuit using power spectral comparisons. 2. EEG in hypertensive SHRSP and M-SHRSP showed the emergence of slow wave bursts parallel to the development of hypertension. 3. These bursts were composed ...
Fu M L - - 1995
In reviewing the available evidence, the involvement of an immunological mechanism behind hypertension has been proposed. However, whether altered immunological function is a primary factor in the pathogenesis of hypertension or secondary to tissue damage of vascular beds induced by hypertension is still poorly defined. A major difficulty has been ...
Spiro A A - - 1995
Personality predictors of hypertension incidence were studied in 838 community-residing men from the Normative Aging Study. They were followed over a mean of 17 years during which time 38% developed hypertension. Stepwise proportional hazards regression was used to identify scales from the Cattell 16 Personality Factor Questionnaire that predicted hypertension ...
Tomera J F - - 1995
At present, the significance of calcium accumulation in the aetiology of coronary artery disease (CAD) in humans is not known, except only to exacerbate the condition. In an attempt to understand ionic disturbances in vasculature derived from cardiovascular abnormalities, soft tissues from hypertensive models were examined. The study hypothesis was ...
Scragg R - - 1995
Although blood concentrations of the active metabolite 1,25-dihydroxyvitamin D are raised in hypertension, concentrations of 25-hydroxyvitamin D, the main vitamin D metabolite, do not appear to have been reported in newly detected hypertension. Serum levels of 25-hydroxycholecalciferol were measured in 186 newly detected hypertensive patients (blood pressure > 160/95 mm ...
Fronticelli C M - - 1995
Between 1983 and 1992, 24 patients with primary hyperaldosteronism were operated at our division. Among these, 21 had adrenal adenoma and constituted the subjects of our study. The aim of this retrospective study was to determine risk factors that could potentially lead to persistent arterial hypertension (5 cases or 23.9%). ...
Okeahialam B N - - 1995
Eleven DCM patients who were found to have significant background hypertension from an echocardiographic assessment of the role of hypertension in DCM form the subject of this follow-up study. This was to test the reliability or otherwise of this investigative method which is supposed to identify DCM patients who would ...
Chen C J - - 1995
To examine the association between long-term exposure to inorganic arsenic and the prevalence of hypertension, we studied a total of 382 men and 516 women residing in villages where arseniasis was hyperendemic. Hypertension was defined as a systolic blood pressure of 160 mm Hg or greater, a diastolic blood pressure ...
Ravalico G - - 1995
Oscillatory potentials of the ERG proved to be a sensitive indicator even in mild disturbances of retinal circulation, such as the first stage of hypertensive retinopathy (WHO classification). Oscillatory indexes (OIs) and blood pressure levels of 24 hypertensive patients in stage 1 of the WHO classification, who underwent an antihypertensive ...
Gupta R - - 1994
The aims of this study were to determine the prevalence of hypertension (systolic > or = 140 and/or diastolic > or = 90 mmHg) and its subtypes such as borderline isolated systolic hypertension (systolic > or = 140, diastolic < 90 mmHg), definite isolated systolic hypertension (systolic > or = ...
Fletcher A - - 1994
While expenditures for hypertension are on the increase in developed countries, and potentially also in the developing world, resource constraints, even in the most affluent countries, need to consider hypertension control in the context of other demands of society. This position paper sums up the key aspects of the debate: ...
Markovic N - - 1994
BACKGROUND: Concern has been expressed regarding the adequacy of classifying individuals as hypertensive based upon a single blood pressure determination and/or the average of readings taken at a single visit and the appropriateness of these determinations in cross-cultural comparisons of rates of hypertension. METHODS: This analysis investigated the potential classification ...
Jamieson A - - 1994
Glucocorticoid suppressible hyperaldosteronism (GSH) is an uncommon form of dominantly inherited hypertension. Presentation with hypertension and complications such as stroke in early life are well recognised. The use of a simple genetic test carried out on blood or placenta facilitates the detection of infants and children with GSH before the ...
Plazzi G - - 1994
Eleven hours and 6 days, respectively, after childbirth 2 women exhibited hypertension and paroxysmal visual disturbances followed by tonic-clonic seizures and no other preeclamptic signs. Both developed partial epilepsy with occipital lobe seizures with no other neurologic defects. Neuroimaging showed no lesion during either the acute episode or 3-5 year ...
Johansson B B - - 1994
In spite of the fact that hypertension is the main risk factor for cerebrovascular disease, retrospective studies have not given a clear answer concerning the role of hypertension in vascular dementia. Hypertension predisposes to intracerebral and extracerebral arterial alterations which may cause cerebrovascular events by a number of mechanisms. In ...
Ingelfinger J R - - 1994
This review focuses on recent hypertension literature relevant to pediatrics. In the past year there have been some new recommendations for the evaluation of hypertension and some new ways to look at blood pressure norms in the pediatric population. Furthermore, several useful reviews concerning pediatric hypertension have been published. There ...
Agarwal A K - - 1994
A cross-sectional study was carried out in rural areas of Jawan Block District Aligarh, Uttar Pradesh, India covering a total population of 3760 drawn from 11 villages. The total number of confirmed hypertensives was 59 with a prevalence rate of 15.7 per 1000 of the general rural population. The prevalence ...
Dul M W - - 1994
Information provided by doctors of optometry to the primary care providers of patients with hypertension provides one of the few objective means of assessing the status of these patients. The optometrist may also be the first to suspect primary or secondary hypertension in the course of a comprehensive eye examination. ...
Gopinath N - - 1994
A follow-up study of hypertension was carried out among adults in Delhi 3 years after an initial community-based epidemiological survey of the same population. The treatment and the severity status of 1115 out of 1749 individuals with hypertension detected in the initial survey were compared with those observed in the ...
Simon D - - 1993
BACKGROUND: Up to 80% of patients with adrenocortical tumors comprising Conn's or Cushing's syndrome and patients with pheochromocytomas suffer from hypertension. Its implications in cardiovascular disease and its impact on quality of life make it the most important aim in therapeutic efforts. The aim of our study was to assess ...
Fournier A M - - 1993
To investigate the association of blood pressure and end-organ damage in patients with severe hypertension in a case-controlled manner, 26 patients with syndromes of acute end-organ damage and severe hypertension were compared with 25 patients with severe but asymptomatic hypertension for a variety of demographic, clinical, and basic laboratory values. ...
Pardo Mindán F J - - 1993
Hypertension produces myocyte hypertrophy and increases the extracellular matrix. In order to determine the composition of the extracellular matrix we studied the hearts from 14 hypertensive patients by immunohistochemistry using antibodies against collagen I, III, IV and V, fibronectin, myoglobin, muscular specific actin, Factor VIII, CD 34 and vimentin. The ...
Donders S H - - 1993
The coagulation parameters factor VII, fibrin monomers, thrombin-antithrombin III (TAT) complexes and fragment 1.2 (F 1.2) were studied in 43 treated and 11 untreated patients (27 males, 27 females age range 19-70 years) with hypertension of moderate severity. The patients included in this study who were treated with antihypertensive drugs ...
Webster J - - 1993
We evaluated the outcome of patients presenting with accelerated hypertension, as part of an audit of the Aberdeen Hypertension Clinic database. Of 3928 patients (2005 male, 1923 female) referred for assessment of hypertension, 128 (77 male, 51 female) presented with accelerated hypertension. The main outcome measures were systolic and diastolic ...
Akpede G O - - 1993
The case histories of two patients with sickle cell disease and gram negative sepsis complicated by encephalopathy and hypertension is presented. The first patient had 2 episodes of "hypertensive encephalopathy" before control of her blood pressure was achieved while the second patient had only one. The occurrence, though apparently rare, ...
Pica L A - - 1993
In 1988, a follow-up study of a group of hypertensives (n = 278), identified two years earlier in a prevalence survey (1986), was conducted. Blood pressure (BP) levels, treatment and control status and medical follow-up were assessed. Subjects were classified as either known hypertensives or newly identified hypertensives. There was ...
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