ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID

ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID

摘要:

The combined use of an artificial pacemaker and the insertion of a myocardial electrode has been described and demonstrated to be an effective method of controlling the heart rate at low voltages and low current amplitudes when complete heart block is present. The cardiac output and mean aortic pressures of dogs have been restored to preblock levels throngh the application of electric stimuli applied directly to the myocardium. No complications from insertion of removal of the wire in the heart wall were observed. The heart rates of 18 patients with surgically induced complete atrioventricular dissociation have been successfully managed by the method described with an important reduction in the mortality associated with this complication of open heart surgery.

ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID

摘要:

These studies demonstrated the existence of chromaffin-reacting granules in the human skin. The chromaffin reaction was provided by bichromate fixation. Subsequent special staining by the modified Sevki procedure revealed these granules to be localized usually to characteristic long, eel-like cells with distinctive tinctorial features. Although the true significance of these cells is not certain, they are believed to represent the local source of a vasopressor material for the peripheral tissues. Much indirect physiologic evidence supports this belief.

ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID

摘要:

“Soft” fats were found to depress significantly serum cholesterol levels in diets of high energy to protein (E/P) ratio but not in diets of low energy to protein ratios. A low (E/P) ratio depressed serum cholesterol values, regardless of the type of fat in the diet. The E/P ratio may represent the unknown factor in the equations of workers who have tried to relate the effect of dietary fats to serum cholesterol levels.

ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID

摘要:

The transcapillary net exchanges of inulin, para-aminohippurate, thiocyanate and heavy water were determined in the renal circulation. It was found that the tracer substances larger than heavy water diffused more freely through renal than through previously studied peripheral or pulmonary capillaries. The results are consistent with the concept of a larger pore size in renal capillaries.

ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID

摘要:

Irreversible hemorrhagic shock in dogs was associated with a progressive rise in plasma hemoglobin levels and the appearance of an abnormal hemin pigment in the plasma. Both findings were related to mucosal necrosis of the bowel occurring as a result of prolonged hemorrhagic shock. In dogs perfused through the superior mesenteric artery during hemorrhagic shock, the bowel remained normal, irreversibility was prevented and the abnormal plasma findings did not occur.

ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID

摘要:

Methionine deficiency in the presence of a high-fat, high-cholesterol diet aggravates atherogenesis in the cockerel. High-protein, high-vitamin supplementation suppresses the atherogenic effect of a cholesterol-fat-containing diet. High-protein supplementation alone had a suppressive effect; high-vitamin supplementation had no effect. However, the combined protein and vitamin supplement was the most effective.

ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID

摘要:

Decreased protein intake in the presence of a high-fat, high-cholesterol diet was found to produce marked aggravation of hypercholesterolemia and atherogenesis in cockerels. Sucrose was substituted for protein in this low protein diet. The effect of this diet is not due to sucrose since restoring the protein to a high level, while keeping the sucrose in the ration constant, had no such effect.

ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID

摘要:

Renal lymphatic pressure was found to be increased either by partial occlusion of the renal vein or total occlusion of the ureter. Simultaneous measurement of interstitial and lymphatic pressure revealed that with compression of the renal vein the rise in interstitial pressure preceded the rise in lymphatic pressure.

ISSN:0009-7330    

出版商:OVID    

年代:1958

数据来源: OVID