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Query: UMLS:C0020538 (hypertension)
 170,190 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Red cell deformability, which allows cells of 7 mu diameter to flow through capillaries not larger than 3 mu, can be approached by the measure of blood filterability on nuclepore 5 mu filters. Filterability is reduced in arterial diseases. We have, in 72 patients, correlated red cell filterability, with the number of cardiovascular risk factors present high blood pressure, overweight, diabetes, hyperuricemia, hyperlipemia smoking). There is a statistical difference between groups with risk factors present as a whole and with O risk factor (p less than 0.01). The difference is highly significant between O and 4 risk factors (p less than 0.0005). Filterability decrease is also directly correlated with the number of cigarettes smoked per day (less than 0.05) and decrease is enhanced by smoking two cigarettes.
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PMID:[Red cell filterability, smoking and cardiovascular risk factors (author's transl)]. 53 Aug 22

The sixth report of the "Diaphane Dialyse Informatique" Program concerns 2,518 adult patients (age 15 and over) treated by chronic hemodialysis or hemofiltration in 33 French dialysis centres between June 1972 and December 1978. 1) The number of centers participating to the program is progressively increasing. Overall duration of follow-up represents 4,192 patient-years, allowing precise evolutive studies of terminal renal failure treated by hemodialysis. 2) Mean age at start of treatment continues to increase. Among 709 patients who started treatment in 1977-1978, 8,8 p. 100 of men and 11 p. 100 of women were over 69 years old. 3) Patients with diabetic nephropathy represent 4,4 p. 100 of all patients dialyzed between 1972 and 1978 and 5,9 p. 100 of the patients starting treatment in 1977-1978. 4) The percentage of patients temporarily treated by peritoneal dialysis before hemodialysis decreases from 32,9 p. 100 in 1973-1974 to 15,9 p. 100 in 1977-1978. 5) In 1978, 65,3 p. 100 of patients are dialyzed 3 times a week with a mean weekly duration of 14,0 h for male and 12,9 for female. 73 p. 100 of the patients are dialyzed during the night. 6) Disposable parallel plate hemodialyzers (71,8 per cent of dialysis sessions in 1978) and hollow fiber hemodialyzers (11,6 per cent) progressively replace disposable coil dialyzers and non disposable Kiil dialyzers. 7) Transient hypotensive episodes during dialysis sessions remain the most frequent complications (21,7 per cent of sessions in 1978). Transient hypotensive episodes are more frequently observed with coils than with parallel plate hemodialyzers or with hollow fiber dialyzers. 8) Mean diastolic blood pressure (DBP) +/- SD is 101,9 +/- 21,7 mmHg at start of dialysis and 81,4 +/- 11,8 mmHg when dialysed. During the course of treatment 28,7 per cent of the patients receive long term antihypertensive treatment. In spite of dialysis and antihypertensive treatments 11 per cent of all patients followed up maintain DBP greater than or equal to 95 mmHg. 9) Viral hepatitis remain the most prominent infectious problem with 30 per cent of patients being chronic Hbs antigen carriers. 10) Annual death rate calculated in the 2,518 patients dialyzed between 1972 and 1978 (78/1000) is 12 times superior to the death rate of the French population, adjusted for sex and age to the dialysis population. 43,1 per cent of deaths are of cardiovascular origin. Risk factors for overall mortality are age, sex (male), existence of a vascular or diabetic nephropathy, twice weekly dialysis strategy, elevation of systolic or diastolic blood pressure during the course of dialysis treatment, hypocholesterolemia and to a lesser extent hypotriglyceridemia. On the contrary, hypercholesterolemia, hypertriglyceridemia and hyperuricemia do not appear as risk factors for overall mortality or cardiovascular mortality. These results plead for a perfect control of hypertension and to the extension of thrice weekly dialysis for the whole population of patients treated by maintenance hemodialysis.
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PMID:[Society of Nephrology, Computer Technology Commission. Dialysis computer program. VI. - Survival and risk factors]. 55 77

The importance of the gout is growing in the GDR as its frequency has been increasing since the sixties. The gout is a disease of metabolism with the following accompanying phenomena: renal lesion in gout, hypertension, cardiac diseases and peripheral arterial diseases. Besides, there are proved relations between hyperuricemia and obesity, hyperlipoproteinemia, diabetes mellitus as well as steatosis hepatis. In describing the nature of the gout the peculiarities of age are stressed. The treatment of the gout depends on the clinical state.
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PMID:[Gout in the age (author's transl)]. 61 69

In 500 obese patients (146 men, mean age 37 +/- 13 years, Broca index 147 +/- 24; 354 women, mean age 36 +/- 14 years, Broca index 151 +/- 28) cardiovascular risk factors (RF) were investigated. The most frequent RF was hypertension (71 per cent), followed by glucose intolerance (49 per cent), hypertriglyceridemia (31 per cent), hypercholesterolemia (22 per cent) and hyperuricemia (22 per cent). Only 12 per cent of the patients were without RF. These patients were younger and less obese than the patients with RF. The prevalence of RF increased with increasing age and overweight. Analysis revealed significant correlations between overweight and blood pressure, blood glucose, insulin and age. Significant correlations between age and hypertension, blood glucose cholesterol, triglycerides and overweight were detected. The correlation between overweight and the sum of all RF was higher (r = 0.35) than the one between age and the sum of all (r = 0.23). Obese patients had a high prevalence of RF. Increasing overweight and (to a lesser extent) age are both associated with increased prevalence of RF. On the basis of the prevalence of RF, patients with gross obesity (Broca index greater than around 150) were considered to be at a high risk in respect of coronary heart disease.
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PMID:Cardiovascular risk factors in gross obesity. 61 33

To study whether the renin-angiotensin system is related to hyperuricemia in hypertension, the serum concentration of uric acid was determined in 96 patients with various types of hypertension and various degrees of plasma renin activity (PRA). In malignant hypertension, both PRA and the serum uric acid level were higher than in essential hypertension; but in primary aldosteronism or desoxycorticosterone-excess hypertension, they were lower than in the essential type. In renovascular hypertension, PRA was higher than in essential hypertension, but the serum uric acid levels were similar. There were no differences in PRA and serum uric acid concentration between Cushing's syndrome and essential hypertension. The serum uric acid level in high-renin essential hypertension was higher than in either the normal-renin or the low-renin type. There was a significant correlation between serum uric acid concentration and PRA in the basal state, and between the change in PRA and the change in serum uric acid induced by administration of furosemide. Apparently the close correlation between the renin-angiotensin system and the concentration of serum uric acid is related to changes in extracellular fluid volume, although an intrarenal effect of angiotensin II cannot be excluded.
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PMID:Serum uric acid and the renin-angiotensin system in hypertension. 65 66

A strain of genetically selected White Carneau pigeons (WC-2) with increased atherosclerosis at similar plasma cholesterol concentrations as randomly bred (RBWC) pigeons was studied to evaluate the commonly known risk factors for atherosclerosis. Indicators for the presence of hypertension, diabetes mellitus, "stress", hyperuricemia and hypothyroidism were determined. In pigeons fed the atherogenic diet, major differences in atherosclerosis were seen between WC-2 and RBWC. WC-2 pigeons had more aortic surface covered with plaque and greater concentrations of aortic nonesterified cholesterol, esterified cholesterol, uronic acid, and hydroxyproline, as well as a greater prevalence and severity of coronary artery atherosclerosis. For WC-2 and RBWC pigeons we found similar levels of hypercholesterolemia, mean blood pressure, plasma triglyceride and glucose concentrations. In addition, several other physiological variables such as plasma uric acid, calcium and phosphorus concentrations, adrenal and thyroid weights which have been implicated in the pathogenesis of atherosclerosis were similar. The findings indicate that the differences in extent and severity of atherosclerosis between WC-2 and RBWC cannot be explained by differences in the risk factors studied. Possible genetic regulation of atherosclerosis by mechanisms operable in the arterial wall of WC-2 pigeons is suggested.
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PMID:Risk factors in pigeons genetically selected for increased atherosclerosis susceptibility. 72 42

Gouty arthritis in females is relatively infrequent, although the sex ratio may be somewhat altered in different races. A positive family history is relatively prevalent among females whose onset of gout is premenopausal. In those patients with a postmenopausal onset, the incidence of diuretic-associated gout is high. The bimodal distribution of serum urate might be related to some variance of genetic transmission in female gout. Hypertension and coronary heart disease are common coexisting conditions, as is true of gouty arthritis in males. Chronic urinary tract infection dating from previous pregnancies is a frequent complication. The relative prevalence of proteinuria and diminished renal function leads to increased hyperuricemia, with a tendency to a low urinary uric acid output. This explains in part the higher incidence of extensive tophaceous deposition but lower incidence of renal calculi. Diuretics are associated with a higher urine pH, likewise, they reduce the urinary uric acid excretion. This also may contribute to the lower incidence of renal calculi. There may be some statistical support for the low fertility rate among the gouty females. Only two females became pregnant after the onset of gouty arthritis. All other pregnancies occurred before the onset of arthritis. Even then, abnormal pregnancies were relatively frequent. Some hormonal malfunction among the gouty females cannot be discounted. Both renal calculi and tophi are frequent in female gout associated with blood dyscrasias. They may manifest early, preceding the first attack of acute gouty arthritis. In both the male and female secondary gout, the primary underlying disease governs the uric acid metabolism and the clinical symptomatology of gout. The predominant role in pathogenesis is the excessive rate of uric acid production, and its disposal is governed by the different stages of the underlying disease and the treatment. Thus, secondary gout in females appears to be somewhat different from primary gout in females, but not different from secondary gout in males.
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PMID:Some unusual features of gouty arthritis in females. 83 22

Gout disease in our country as both exogenous factors (dietary habits, professions, etc.) and endogenous factors (sex, inheritance, etc.) play a polygenic role in its incidence. Those conditions resulting in hyperuricemia (diseases, drugs, etc.) facilitate the clinical manifestations. But a genetic determinant in the articular reaction in front of an accumulation of uric acid crystals or in the development of such crystallization is a fundamental factor in the manifestation of the disease. In our series we were able to confirm the high incidence of arterial hypertension, renal lithiasis and renal participation in gout. The role of lead and of certain professions in favouring the hyperuricemia is suggested. A classification of gout, from a functional point of view, must include both the clinical form and the analysis of the whole renal function, and the renal handling of uric acid. This is mandatory not only for the diagnosis and prognosis of the disease but to set the basis of its adequate management.
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PMID:Gout disease. Its natural history based on 1,000 observations. 85 20

With the world-wide increase of the number of ischemic heart diseases the significance of the so-called factors of risk which initiate an arteriosclerosis or can deteriorate it, respectively, has increased. In the Dresden study concerning the most important factors of risk we found the following frequencies: obesity 8.2%, hyperlipoproteinemia 7.4%, hyperuricemia 3.8%, diabetes mellitus 2.0%, hypertension 17.2% and smoking 30.3%. From the investigations results the great significance of the combination of factors of risk which has a potentiating effect. The hyperlipoproteinemias of type III-V most frequently show a disturbed carbohydrate tolerance and hypertension. In them also the most frequent severe changes of the ECG appear. Myocardial infarctions concerned above all type II-IV. Apparantly concerning the vascular system patients with the combination hyperlipoproteinemia and carbohydrate metabolism are particularly endangered. The "metabolic syndrome" (obesity, diabetes mellitus, hyperlipoproteinemia, hyperuricemia, steatosis hepatis) with the increase of the viscosity of blood and plasma as well as disturbances of coagulation together with other factors of risk further the development of arteriosclerosis or has a directing influence on it. Nevertheless, the concept of the significance of the factors of risk is not able to predict the risk in every case. With the help of the apoproteins the metabolic risk is to be more exactly estimated by the determination of the lipid values in the individual classes of lipids or by classification.
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PMID:[Epidermiology and associated risk factors of hyperlipoproteinemia]. 88 54

Sumo is an ancient sport in Japan and there are at present over 800 professional sumo wrestlers (rikishis). After entrance into the wrestler society a wrestler takes strenuous daily training together with a very high calorie diet (more than 5,000 cal). Frequency of food intake is twice a day. The average diet of Japanese people contains of 2,279 calories and the meal frequency is generally three times a day. In 96 wrestlers average actual body weight and modified Broca index was 100.4 kg and 143.5%, respectively. In this group the prevalence of overweight with obesity, overweight without obesity, nonoverweight with obesity, and nonoverweight without obesity was 53.4, 39.1, 1.0, and 6.5%, respectively. Also mean serum levels of triglyceride, phospholipid, uric acid, and total protein were significantly higher than those obtained in 89 age-matched healthy males. The incidence of diabetes mellitus, gout, and hypertension in wrestlers was 5.2, 6.3, and 8.3%, respectively, all values being considerably higher than in controls. Weight correlated significantly with skinfold thickness, diastolic blood pressure, total cholesterol, and uric acid in each group. Multiple regression analyses were made treating weight or uric acid as dependent variables in both groups. Obesity, hyperlipidemia, and hyperuricemia in wrestlers were presumed to be caused chiefly by the high calorie diet and partially by the infrequent meal intake.
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PMID:Some factors related to obesity in the Japanese sumo wrestler. 97 5


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