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Results 601 - 650 of 657
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Barker L R - - 1980
Hypertensive patients may present to the emergency department with one of three general problems: high blood pressure due to labile hypertension, chronic hypertension, accelerated hypertension, or a hypertensive emergency; side effects from antihypertensive drugs; or acute medical or surgical illness whose management may be affected by hypertension or by drugs ...
Dutton J J - - 1980
Fluorophotometry was used to evaluate alterations in the blood-ocular barrier to fluorescein in rats with experimental hypertension. One hour after intravenous injection of fluorescein, 16.6 mg/kg, concentrations in the anterior chamber were increased from mean normotensive values of 135 micrograms/mL to 299 micrograms/mL (P = .005) in animals with severe ...
Oviasu V O - - 1980
Cross-sectional surveys of arterial blood pressure among rural and urban communities in Bendel State, Nigeria, showed that mean systolic and diastolic pressures were generally higher in urban than in rural subjects, but the differences were statistically significant only in certain age groups. The mean arterial pressures in groups of rural ...
Endo T - - 1979
In an attempt to re-evaluate a possible high incidence of hypertension in hypothyroid patients, blood pressure was measured in 38 slightly hypothyroid patients, in 17 moderate hypothyroid patients, and in 26 severe hypothyroid patients. The data were then compared with the findings in 73 known euthyroid subjects and in 1,601 ...
Walker H L - - 1979
In recent years interest has increased in the study of the metabolism of cadmium because of its presence in the environment as a toxic agent. Having no known essential bodily functions and possibly altering the action of various other trace metals, eg, lead and zinc, cadmium has been suspect as ...
Zanchetti A - - 1979
The problem of cardiovascular reflexes in hypertension poses several questions. The first is whether alterations in cardiovascular reflexes can initiate a persistent increase in arterial pressure. Another is whether it is an alteration in depressor or in pressor reflexes that matters in hypertension. Other questions concern the type and nature ...
Loggie J M - - 1979
Juvenile hypertension is a new field of study, and a definitive approach to diagnosis and treatment has not yet been developed. This article outlines the approach at the hypertension clinic of Children's Hospital Medical Center, Cincinnati, where experience has confirmed the value of routine blood pressure measurement from an early ...
Zeis P M - - 1979
An 11-month-old boy had an episode of generalized convulsions followed by a right peripheral facial palsy, which resolved gradually within 3 weeks. Three months later he had another similar episode of convulsions followed by a left peripheral facial palsy. On both occasions it was found that he had polycythaemia. A ...
Soyannwo M A - - 1978
Two comparable rural communities but with varying endemicity of urinary schistosomiasis in environs of Ibadan, Nigeria, have been studied by a total cross-sectional population survey. It has been found that:- (i) schistosomiasis does not predispose to raised blood pressure (ii) both diastolic and systolic blood pressure increase with age. (iii) ...
Finnerty F A FA - - 1978
The hypertensive encephalopathy is a syndrome consisting of a sudden elevation of arterial pressure usually preceded by severe headache and followed by convulsions, coma or a variety of transitory cerebral phenomena. The syndrome may complicate acute glomerulonephritis, toxemia of pregnancy and essential or malignant hypertension. Two syndromes must be differentiated ...
Ogawa M - - 1978
The interaction between noradrenergic and serotonergic mechanisms on the central regulation of blood pressure in the rat was studied, using central experimental hypertension produced by chemical lesions of the locus coeruleus (LC) with 6-hydroxydopamine (6-OHDA). The hypertension (LC-hypertension) was blocked by pretreatment with 6-OHDA intraventricularlly administered and also with desipramine. ...
Paul O - - 1978
The complications of mild hypertension especially involve progression to moderate or severe hypertension, coronary events, strokes, and congestive heart failure. Less often, other complications such as rupture of a dissecting aneurysm, retinal hemorrhages, hypertensive encephalopathy, and renal failure may occur. Total mortality clearly rises with progressive increases in systolic or ...
Falkner B - - 1978
Hypertension has been observed to occur frequently in children with burns. In a series of children admitted to the St. Agnes Burn Treatment Center, sustained systolic and diastolic hypertension occurred in 31.5%, and 57.4% of the children demonstrated episodic periods of hypertension which were unsustained. The only clinical finding which ...
Cross D A - - 1978
Our clinical experience and the literature regarding anesthetic management of the hypertensive patient are reviewed. Preoperative evaluation and treatment of all hypertensive patients, regardless of their degree of lability, is recommended. For emergency surgery on an untreated hypertensive patient, control of blood pressure with nitroprusside should be attempted before an ...
Pratesi F - - 1978
Systolic arterial hypertension in subjects with regional cerebral ischemia is considered and discussed as regards its frequency and its pathogenetic meaning, and criteria concerning the way of treating it. Systolic arterial hypertension presents a very high frequency in these subjects. At times it is accompanied by moderate diastolic hypertension, to ...
Halar E M - - 1978
Due to conflicting reports in the literature regarding nerve conduction velocities (NCVs) in hypertensives, peroneal and sural NCVs and facial nerve conduction latencies were studied in 30 hypertensives and in 30 controls. An improved technique of NCV measurement was used. Twenty-one of the hypertensives were retested after five weeks, and ...
Christmas B W - - 1977
The prevalence of hypertensive levels of blood pressure was investigated in a random sample of 2535 adults in Napier in 1973. More than 70 percent of all persons examined had been measured for blood pressure within the previous five years. A retrospective analysis of results using the WHO classification indicated ...
Eden O B - - 1977
Five children are described who developed hypertension in relation to acute neurological disease. Possible pathophysiological mechanisms for the hypertension are considered. It is thought that the hypertension may have been related to interruption of the ascending tracts in the brain stem, leading to failure of integration between, or independent action ...
Wilkins H A - - 1977
A field study in an area of intense infection with Schistosoma haematobium showed a 6-6% prevalence of bacteriuria in males under 25 which was significantly greater than in a non-endemic area where no cases were found. In older subjects the prevalence in both areas was less than 1%. Similarly designed ...
Wallace E R - - 1977
An 18-year-old patient with catatonic schizophrenia developed hypertension when administration of antipsychotic medication was discontinued. Elevated blood pressure was sustained for three days until it was discovered that intramuscular administration of benztropine mesylate immediately reduced it to normal. The fact that the hypertension was not noted earlier while the patient ...
Mati J K - - 1977
Progesterone (2.5 mg per kilogram) caused sustained hypertension in rabbits. When the same dose of progesterone was administered together with prolactin (1.25 mg. per kilogram), there was no increase in the blood pressure. In rabbits with progesterone-induced hypertension, the addition of prolactin caused a sharp drop in blood pressure. It ...
Mawson A R - - 1977
Although the possible role of hypertension and/or blood pressure variability in the causation of juvenile delinquency has not been directly investigated hitherto, there is evidence to suggest (a) that an excess prevalence of blood pressure variability rather than hypertension is the aspect of cardiovascular functioning which characterizes adolescents, and some ...
Liljefors I - - 1977
Hypertension has been found to imply a disease entity since the beginning of this century. Effective treatment available in the last two decades has changed the outlook remarkably, especially in malignant hypertension. There are more and more evidence that less severe forms of hypertension will benefit from keeping the blood ...
Terry J E - - 1976
Systemic blood pressure is a vital sign and fundamental variable and as such the areas of its involvement in all individuals are indeed multifaceted. The purpose of this paper is to discuss the interpretation of systemic blood pressure readings as they specifically relate to a detailed analysis of hypertensive retinopathy.
Ullah W - - 1976
Casual blood pressure was studied in a mixed community above 20 years of age and records of hospitalised patients for hypertension and/or its complications were analysed. It was found that about 2 percent of people examined were unaware that they had elevated blood pressure. High incidence of hypertension was found ...
Melby J C - - 1976
Alterations in steroidogenesis have been demonstrated in experimental and human hypertension. It is highly likely that increased secretion of the nonaldosterone mineralocorticoid deoxycorticosterone (DOC) and 18-hydroxy-11-deoxycorticosterone (18-OH-DOC) may initiate or perpetuate hypertension, or both. It is possible that 16 beta-hydroxydehydroeplandrosterone (16beta-OH-DHEA) directly induces the hypertensive process in animals. The significance ...
Ahmad I - - 1976
Blood pressure levels among 322 shopkeepers and clerks, aged 14-90, were assessed by measurement during the interviews. An individual was classified as being hypertensive if his systolic pressure was at or above 160 and/or the diastolic pressure was at or above 95 mm.Hg. Seventy-six persons or 23.6% of the sample ...
Carey R M - - 1976
The population of a community of 29,608 adults was screened door-to-door for elevated blood pressure. Of 12,371 adults screened, 20% were classified as hypertensive. After repeated blood-pressure measurement, however, there were only 9% with sustained hypertension, while 11% had labile hypertension. Sixty percent of the cases of sustained hypertension had ...
Cobb M L - - 1976
Problems of management in a child with a large Wilms' tumor and severe uncontrolled hypertension presenting for anesthesia and operation included attempts to determine the etiology of the hypertension; identification of hazards produced by attempted rapid pharmacologic control of blood pressure; need for urgent operative intervention despite uncontrolled hypertension; and ...
Bretherton K N - - 1976
The entry of [125I]-labelled low density lipoprotein (LDL) into different regions of the aortic intima has been studied over a 6 hour period in both normotensive and renal hypertensive rabbits fed a normal diet. Studies have also been carried out in previously hypertensive rabbits in which the blood pressure was ...
Londe S - - 1976
Evidence is presented from studies of the authors and of other investigators that primary hypertension is more common in children than was previously thought. Ninety-five percent of 131 asymptomatic children with incidental hypertension were considered to have primary hypertension after investigation for possible causes. The definition of hypertension was based ...
Brody M J - - 1976
The underlying causes of hypertensive disease remain unclear. This article has attempted to highlight potential dysfunctions in arterial pressure regulation which could either initiate or sustain the hypertensive process. As has been suggested innumerable times hypertension must certainly be a multifactorial abnormality. The current state of knowledge about control of ...
Matova E E - - 1976
Autopsy studies of atherosclerosis of the aorta and the coronary arteries were carried out in 3134 subjects with essential hypertension. A comparison was made with low, average, and high atherosclerosis groups. Essential hypertension was found to accelerate the development of all types of aortic lesion, except fatty streak, as compared ...
Fry J - - 1975
In a London suburban general practice 87 hypertensives have been followed up for more than 15 years. These represented one third of all those (270) aged 30-59 diagnosed as being hypertensive. Females outnumbered males by 2.5: 1. Most (85 per cent), had mild or moderate high blood pressure at first ...
Vidt D G - - 1975
Diazoxide is a potent and safe antipressor agent for parenteral administration in hypertensive emergencies. Its rapidity of effect provides distinct advantages. Drug resistance does not develop in responsive patients and adverse effects are mild and infrequent. The minor changes in blood urea concentration, despite a marked reduction in blood pressure, ...
Sawai K - - 1975
1. There were significant correlation between hyperlipidemia and obesity, hypertension, abnormal ECG and abnormal eyeground. 2. The incidence of cerebral hemorrhage was closely associated with hypertension but not with hyperlipidemia. 3. It was proved that hypertension with both hyper-Ch and hyper-TG was highly related to the development of cerebral infarction. ...
Dunn F G - - 1975
A 26-year-old woman who had been taking an oral contraceptive preparation for two years developed malignant hypertension. Investigation failed to elicit any renal or other cause for her hypertension, but control of blood pressure was obtained by withdrawal of the oral contraceptive agent and antihypertensive therapy. Subsequently, after withdrawal of ...
Morton W E - - 1975
In a statewide survey of hypertension prevalence among pesticideformulating workers and controls in Oregon, we found no difference in mean systolic and diastolic blood pressure values but a modest excess of hypertension prevalence among chlorophenoxy herbicide workers which was largely explained by a greater constitutional predisposition to hypertension as estimated ...
Gal T J - - 1975
Sixty patients out of 1,844 recovery room admissions had significant postoperative arterial hypertension. Nearly 60% of them had a history of hypertension. The postoperative hypertension usually began within 30 min from the end of operation and lasted about 2 hours. In 20% of the patients it lasted 3 hours or ...
Beilin L J - - 1974
A computer-based medical record system has been developed to help with research into hypertension and the management of patients with hypertension. Standard medical records are replaced by data collection forms and case notes printed by the computer. A computer-generated document for recording information at follow-up visits contains an up-to-date summary ...
Wiener J - - 1973
Acute hypertension was produced in rats by the infusion of angiotensin amide for 2 to 4 hours. These animals were injected intravenously prior to sacrifice with either colloidal carbon or iron dextran particles. The mesenteric vessels from hypertensive and control animals were processed for electron microscopy. Ultrastructural alterations are found ...
Giacomelli F - - 1972
The ultrastructure of retinal arterial vessels from rats with severe renal hypertension has been studied. The permeability of retinal vessels has also been examined by means of vascular labeling technics utilizing horseradish peroxidase and microperoxidase as tracer substances. Small retinal arteries and arterioles exhibit foci of smooth muscle necrosis characterized ...
Ooi B S - - 1970
Of 127 hypertensive patients aged 12 to 40 investigated by intravenous pyelography, abdominal aortography, and renal biopsy an underlying cause was found in 57%. The proportion with secondary hypertension was higher in young patients and in those with severe hypertension. Primary arteritis of the aorta was an important cause of ...
Glass D V - - 1970
Abstract The purpose of this note is to consider some of the main factors affecting natural increase in England and Wales. Though the weight of the various factors is slightly different in Scotland, the population of England and Wales is so much larger that discussion of that country will serve ...
Zacharias F J - - 1970
A trial of oral propranolol as a hypotensive agent was designed to provide adequate treatment periods. Twenty-eight patients with essential hypertension, with a mean blood pressure of 190/111 mm. Hg, were controlled on 120-320 mg. of propranolol daily. Their mean treated blood pressure was 153/91. They then entered, on a ...
1970- Marsh, Wallace Arvie,
Thesis (Ph. D.)--University of Texas at Austin, 1999.
de Champlain, Jacques
The incidence of secondary hypertension in clinical practice is probably below 5%. The majority of those cases are of renal origin. Extensive and costly investigations for rarer forms of hypertension therefore do not appear justified. A comprehensive medical history, plus a good physical exam and some critical laboratory analyses can ...
Golan, Eliezer
Apart from seeking target organ damage, the investigation of hypertension is primarily aimed at finding a treatable cause of the hypertension. The finding of one such cause is usually construed as being the sole culprit responsible for the patient's elevated blood pressure. The existence of multiple aetiologies of secondary hypertension ...
Lewis, Lena A.
The plasma protein pattern of patients with uncomplicated essential hypertension showed only slight variations from the normal while that of patients with severely malignant hypertension showed marked shifts. The fibrinogen and β-globulins were usually elevated beyond the normal range and the albumin decreased. In less severely malignant hypertension, the changes ...
Kotlikoff, Michael
A new study demonstrates that angiotensin-induced hypertension results in a marked decrease in expression of the β subunit of the BK channel, suggesting a role for this critical subunit in the regulation of vascular tone.
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