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Results 551 - 600 of 667
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Johansson H - - 1986
A hypertensive crisis with an arterial blood pressure of 280/180 mmHg developed immediately after an apparently successful removal of a phaeochromocytoma. The blood pressure could not be lowered by phentolamine and not until the administration of dihydralazine and furosemide was the systemic pressure normalized. In addition to residual high concentrations ...
Nissinen A - - 1986
The hypertension programme of the North Karelia Project aimed at lowering the high blood pressure level among the whole population. The influence of socioeconomic factors on the effect of reorganized hypertension care was analyzed among a cohort of 222 hypertensive patients during the five year follow-up. The fall in mean ...
Broulik P D - - 1985
Studies were performed in 86 patients with proven primary hyperparathyroidism pre-operatively and 6-7 months after parathyroidectomy. The 29% incidence of hypertension between patients with primary hyperparathyroidism is higher as compared with the incidence of hypertension in the general population. Systolic and diastolic blood pressures were significantly higher in patients with ...
Yamori Y - - 1985
The role of the nervous system in the pathogenesis of cardiovascular complications in hypertension has been clarified to a great extent in genetic rat models for hypertension, stroke and atherosclerosis, especially in the evolution of cardiovascular hypertrophy in hypertension, the most common process related to the pathogenesis and complications of ...
Wei E P - - 1985
The appearance of superoxide anion radical in cerebral extracellular space during and after acute hypertension induced by intravenous norepinephrine was investigated in anesthetized cats equipped with cranial windows. Superoxide was detected by demonstrating the presence of superoxide dismutase-inhibitable reduction of nitroblue tetrazolium. The superoxide dismutase-inhibitable rate of reduction of nitroblue ...
- - 1985
A review of some recent epidemiological data suggests that the control of hypertension in Italy is still poor. Within 6 studies conducted along the last 12 years the proportion of treated hypertensives ranges 11 to 50%; that of hypertensives under proper control (less than 160 and 95 mmHg) 1 to ...
Jannetta P J - - 1985
In a companion paper (Ann Surg 1985; 201(3):391-398), clinical data which suggest that neurogenic hypertension may be caused by arterial compression of the left medulla oblongata was presented. A chronic pathophysiologic animal model of neurogenic hypertension using a substitute for arterial pulsation, the neurovascular compression simulator (NCS), was developed. This ...
Reid H L - - 1985
Haemorheological parameters including whole blood (WBF) and erythrocyte filterability (EF), haematocrit (H'ct), haemoglobin levels (Hb) and plasma fibrinogen concentration (PFC) were measured in 61 adult Nigerians with uncomplicated essential hypertension during the course of their routine anti-hypertensive treatment. Results from these patients were compared to those of 39 age and ...
Deprez R D - - 1985
Prevalence of hypertension, measured on a random sample of Penobscot Indian adults on reservation in Maine, was 23 per cent. Only 50 per cent of the hypertensive Penobscots were aware of their condition. Among those treated with antihypertensive medications, 56 per cent were controlled. When compared to a statewide sample ...
Engvall J - - 1985
In a retrospective study of 311 male workers in an alkaline battery factory, the relationship between exposure to cadmium oxide and hypertension has been investigated. Blood pressure measurements, taken by the same physician, were available for a 30-yr period. When age-matched groups of hypertensive and normotensive workers were compared, employment ...
Kashgarian M - - 1985
A pathogenic role for arterioles in hypertension has been postulated for many decades. Renal arteriolonecrosis, myointimal hyperplasia, and hyaline arteriolosclerosis are anatomic correlates of hypertension. The pathogenesis of these lesions is discussed as is contribution of these lesions to the perpetuation of hypertension. The importance of the extracellular matrix in ...
Nelson M A - - 1985
The role of serotonin (5HT) in the pathogenesis of ACTH-induced hypertension in sheep has been examined. The pressor responses to injections of 5HT (0.1-30 micrograms/kg) were similar in normotensive and hypertensive sheep. Prior treatment with the 5HT2 receptor antagonist ketanserin had no effect on the development of hypertension produced by ...
Lewin A - - 1985
Data describing the 5,485 participants in the stepped-care group of the Hypertension Detection and Follow-up Program were reviewed to determine the apparent prevalence of renal parenchymal and reversible, secondary hypertension. The investigation was limited and was not designed to identify all cases of secondary hypertension. Baseline prevalence of proteinuria was ...
Scardigli K - - 1985
A 24-year-old woman with a two-year history of hypertension was hospitalized for coma and quadriplegia secondary to pontine hemorrhage. A seven-year history of intermittent severe headaches, diaphoresis, and anxiety together with persistent severe hypertension led to the diagnosis of pheochromocytoma. This unusual but devastating manifestation of pheochromocytoma illustrates the importance ...
Reis D J - - 1984
In 1948 knowledge of the role of the central nervous system in controlling blood pressure was rudimentary and the possibility that the brain could contribute to hypertension was barely acknowledged. Over the past 35 years the development of new technologies, particularly those of the neurosciences, and their application to cardiovascular ...
Fraillon D - - 1984
Acute glucocorticoid (corticosterone) hypertension in the rate is significantly attenuated by neomycin administration (Honour 1981), as is ACTH-induced hypertension is the same species (Honour & Kent 1981) presumably by altering gut bacterial steroid metabolism. The effect on blood pressure of oral neomycin administration was therefore examined in hypertension resulting from ...
Loggie J M - - 1984
The workshop was successful in achieving its two major goals: (1) the scientific updating of research issues in pediatric blood pressure determinants and in pediatric hypertension, and (2) the delineation of future research objectives. These objectives are itemized at the end of the workshop proceedings and, in brief, center around ...
Nakaya Y - - 1984
The U loops of vectorcardiograms (VCG) were recorded in 100 normal subjects and 123 subjects with hypertension, using a direct-writing vectorcardiograph with memory function. These U loops were examined qualitatively and quantitatively. Subjects with hypertension were classified into four groups on the basis of electrocardiographic findings, and the correlation between ...
Mota-Hernandez F - - 1984
The course of acute post-streptococcal glomerulonephritis was followed in 81 children, 66 of whom were hypertensive on admission. Sixty-one hypertensive patients were available for follow-up; in seven (11.5%), hypertension recurred 1 to 9 days after initial blood pressure elevation had returned to normal. Thirteen initially normotensive patients were available for ...
Ram C V - - 1984
While the benefits obtained by treating moderate and severe hypertension are clearly documented, the same is not true for mild hypertension. Since mild hypertension (by any definition) is widely prevalent, therapeutic recommendations must not be made casually. The decision to treat mild hypertension must be made only after careful consideration ...
Abdella T N - - 1984
The purpose of the present retrospective study was to examine the relationship between hypertension and abruptio placentae. Two hundred sixty-five consecutive cases of abruption were reviewed, with an emphasis on the occurrence and severity of hypertensive disease. The results confirm a close relationship between abruptio placentae and hypertension. The incidence ...
Goldring D - - 1984
The pathogenesis of primary hypertension remains unknown despite extensive investigation. Recent publications provide evidence that primary hypertension may have its inception in childhood or possibly in infancy. Longitudinal studies are needed to determine whether the infant and child with primary hypertension becomes a hypertensive adult. What is also needed is ...
Strandgaard S - - 1984
In four hypertensive patients, acute lowering of blood pressure by therapeutic or diagnostic procedures caused visual disturbances ranging from transient visual hallucinations to severe, long-lasting visual impairment. These symptoms were associated with occipital lobe cerebral infarcts that tended to occur in the border zones between the major cerebral arteries. The ...
Gage B C - - 1984
Alexithymic and nonalexithymic hypertensives were assessed for severity of hypertension using a weighting system based on diastolic blood pressure, optic fundi, ECG, chest X ray, renal studies, and patient history. Outpatient hypertensives (diastolic blood pressure greater than 95 mm Hg) were selected as subjects because they are largely asymptomatic; thus, ...
Skalina M E - - 1983
Hypertension (blood pressure greater than 70 mm Hg on three days) was noted in 1.2% of all neonatal admissions to the intensive and intermediate care nurseries. During this investigation of neonatal hypertension, a retinopathy identical to that seen in hypertensive adults was noted. Indirect ophthalmoscopy was performed in 21 neonates ...
Nissinen A - - 1983
A 5-year follow-up study of a random sample of middle-aged hypertensives indicated that the North Karelia (Finland) Hypertension Detection Project was effective in reducing blood pressure levels. This analysis indicated that the intensification of drug treatment caused marked blood pressure reduction in the community, especially among individuals with previously undetected ...
Valiallah A A - - 1983
In a house-to-house study of 318 Roodepoort Indians the prevalence of hypertension was 19% by 1962 World Health Organization criteria and 12% by 1978 WHO criteria. This change in criteria may lead to misinterpretation of trends in the prevalence of hypertension. The mean systolic and diastolic pressures rose with age. ...
Weinblatt M E - - 1983
Fifty-nine children with neurogenic tumors were examined for the presence of hypertension. Eleven of the 59 (19%) were found to have elevated blood pressure levels at the time of diagnosis or with progression of their disease. Several antihypertensive agents produced poor or only partial pressure control. All blood pressure levels ...
Peterson E W - - 1983
In three groups of cats, the authors studied the effect of subarachnoid hemorrhage (SAH) on the permeability of the blood-brain barrier (BBB) to the penetration of Evans blue-protein complex. One group received arterial hypertension alone, one group SAH alone, and one group SAH followed by arterial hypertension. Animals subjected to ...
Gee R W - - 1983
A review of published reports shows that in many South Pacific populations blood pressure does not rise with age. This contrasts with Western societies where hypertension and coronary heart disease are major health problems. There is evidence that hypertension is now becoming a problem in some Pacific societies and this ...
Fode N C - - 1983
Hypertension is found in association with functioning pituitary tumors causing acromegaly and Cushing's disease. In acromegaly, the cure of the disease or decrease in level of HGH is not seen to correlate with a decrease in blood pressure, perhaps due to longstanding changes such as cardiac enlargement or increased blood ...
Vanhoutte P M - - 1983
The release of 5-hydroxytryptamine (5-HT) from aggregating platelets may trigger acute vasospastic episodes of larger arteries, which can lead to tissue ischemia, particularly in the coronary and cerebral circulations. In hypertensive humans and animals, 5-HT may play a role in the maintenance of the chronic increase in peripheral resistance. This ...
Perry H M HM - - 1983
In 1962 Schroeder reported marked hypertension in rats chronically fed a very low cadmium diet and 5 ppm cadmium in water, but subsequently he reported only moderate hypertension. Using Schroeder's food and water, but a slightly less cadmium-free environment, we repeatedly induced mild hypertension with 5 ppm cadmium, mild because ...
Fuchs H S - - 1983
Although blood pressure standards in aircrew members have been revised periodically over the past 70 years, hypertension still remains one of the most controversial problems in aviation medicine. Improved clinical knowledge and operational experience vindicate a more liberal attitude for acceptable blood pressure levels. Applicants for flying training presenting labile ...
Falkner B - - 1982
The effect of hospitalization on blood pressure was determined in 31 adolescents admitted to the hospital for evaluation of mild hypertension. All were diagnosed as having primary hypertension. There was a progressive decline of systolic (p less than 0.001) and diastolic pressure (p less than 0.001) during hospitalization. After discharge ...
Scheuer J - - 1982
To evaluate the combined effects of cardiac overload imposed by hypertension and by chronic exercise, male and female rats were made hypertensive by unilateral renal artery stenoses and made to exercise in an 8-10-wk swimming program. Sedentary normotensive animals, sedentary hypertensive animals and normotensive animals exposed to the swimming program ...
Tso M O - - 1982
The effects of systemic hypertension on the posterior segment of the eye are discussed under the headings of hypertensive choroidopathy, hypertensive retinopathy, and hypertensive optic disc edema. The sympathetic nervous control and autoregulatory mechanisms of the retinal and choroidal vasculatures are briefly reviewed. In hypertensive choroidopathy focal occlusion of choriocapillaris ...
Ailinger R L - - 1982
Hypertension knowledge of 330 Hispanic subjects was assessed in a community study using a Hypertension Knowledge Interview Schedule (HKIS). Six areas of hypertension knowledge, including definition, etiology, diagnosis, risk factors, treatment, prognosis, and sequelae were assessed. Of the subjects, 64 percent had adequate knowledge and 34 percent inadequate knowledge of ...
Seedat Y K - - 1982
A study of 1,000 urban and 1,000 rural Zulus was carried out to determine the biosocial factors associated with hypertension. The prevalence of hypertension was 25% in the urban Zulu (males 23%, females 27%) and 10.5% in the rural Zulu (males 10%, females 10.75%). The mean arterial pressure was higher ...
Gruber K A - - 1982
An endogenous, immunoreactive digoxin-like factor (endoxin) was measured in the plasma of nonhuman primates with hypertension. Both normotensive and hypertensive rhesus monkeys had levels of endoxin that significantly correlated with their systolic or diastolic blood pressure. Vervet monkeys with experimentally produced chronic Goldblatt hypertension had significantly elevated endoxin, but not ...
Lloyd I J - - 1982
The pathophysiology of most forms of hypertension is still poorly understood. A hypothesis is developed suggesting that the balance of hormones capable of influencing sodium metabolism play a significant role in the pathophysiology of hypertension, and that a significant component of the hormonal effect is mediated through changes in the ...
Lynch J J - - 1982
Recent observations of large, consistent increases in blood pressure during human communication prompted a reassessment of the role of interpersonal factors in the behavioral control of hypertension. It was noted that the conceptual framework around which earlier behavioral studies have been carried out, as well as in the physical methods ...
- - 1982
Two thousand and twenty hypertensive patients of 45 years and over were treated and followed up for either 6 months, 12 months, 18 months or 2 years. Seventeen hundred and forty of these patients were seen in hospital outpatient clinics, 280 in general practice.The patients followed in general practice had ...
Ladipo G O - - 1981
In a prospective study of retinal changes in 350 hypertensive Nigerians from two institutions, over 70% of the patients showed hypertensive retinopathy. This is in agreement with the findings of some other studies in Africans. There was a statistically significant correlation between the height of blood pressure and severity of ...
Generali J A - - 1981
A hypertensive episode precipitated by avocados in a patient on tranylcypromine is described. The patient complained of severe throbbing headache, chest pain, and diaphoresis upon visiting the emergency room. Intravenous phentolamine was administered repeatedly to treat elevated blood pressure. Approximately 4 1/2 hours later, the patient's blood pressure stabilized, and ...
Kannel W B - - 1981
One thing is now clear; a little hypertension can be lethal, and rigid normalization of the pressure prolongs life and reduces cardiovascular sequelae of hypertension, possibly including coronary heart disease. There is little excuse for not treating hypertension, including mild hypertension. However, while all hypertension should be treated, for some, ...
Pero R W - - 1981
A method for the quantitative analysis of the percent metabolism that results in covalent binding of 7,12-dimethylbenz[a]anthracene (DMBA) to DNA in viable resting human lymphocytes is described. The inter- and intra-experimental reproducibility as judged by the coefficient of variation and examined in the same individual over a 3-month period was ...
Whelton P K - - 1981
Neither blood pressure measurements nor other clinical features permit an entirely adequate characterization of individuals having mild hypertension. However, although any definition of mild hypertension is arbitrary, the concept is firmly established in clinical practice and such classifications can prove useful as operational diagnoses. The relative risk of subjects with ...
Brogden R N - - 1981
alpha-Methyl-p-tyrosine is an orally active inhibitor of catecholamine synthesis which inhibits the hydroxylation of tyrosine to dopa. At dosages of 600 to 3500 mg daily it is effective in controlling the hypertensive episodes and symptoms of catecholamine excess in phaeochromocytoma during preparation for surgery. Limited published experience suggests that it ...
Elo J - - 1981
A community control program for hypertension was instituted during 1972 and 1977 as a major subprogramme of the North Karelia project. The aim was to reduce the high blood-pressure levels prevalent among the whole population of the county of North Karelia. A community-based hypertension register, established according to the recommendations ...
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