摘要:

Nine cases of congenital mitral stenosis are presented, with a review of 34 cases from the literature. A high incidence of associated malformations of the aortic valve, the aorta and the ductus arteriosus is apparent. Clinical findings and results of investigative procedures have been reviewed. Mitral stenosis is responsible for severe circulatory alterations and the development of hypertensive pulmonary vascular changes. This malformation has serious consequences. It is associated with early mortality and renders ineffective the surgical repair of associated coarctation of the aorta or patent ductus arteriosus.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

The filling pressure in the minute vessels of the skin of the foot has been estimated by a method of elevation and reactive hyperemia. A series of 90 observations was made on 78 patients. This test has been found helpful in evaluating the degree of arterial insufficiency, permitting a more accurate selection of patients to be treated by conservative methods, local amputation or more radical procedures.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

Attempts to follow changes in blood pressure induced by exercise, using indirect sphygmomanometry, have yielded conflicting results. In the following study, blood pressure measurements were made at rest (standing), during a standard treadmill work load, and during a six-minute recovery period, using a direct method and a suitably damped recording system. It was found that during exercise systolic pressure rises and that diastolic pressure falls, the net result being very little change in the mean pressure. In some subjects there is a secondary rise in all three items between 10 and 30 seconds after cessation of exercise. Changes in pulse rate during exercise and recovery are also discussed.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

Patients with chronic congestive heart failure operated upon for the surgical correction of mitral stenosis have been observed repeatedly to have low plasma sodium concentrations and elevated plasma potassium concentrations after operation. This study was primarily directed at an understanding of these abnormalities. The authors have shown that the preoperative patient has a characteristic disorder of body composition noteworthy for a high total body water, a high total body sodium, a low total exchangeable potassium and a low plasma sodium concentration. The effects of surgery on this abnormal body composition, and the therapeutic implications are discussed.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

This article is a survey of 476 consecutive cases of tumor death for heart involvement. The somewhat selected group of cases (from a Veterans Administration hospital) shows an incidence of cardiac metastasis of 19.1 per cent. The bulk of tumors metastasizing to the heart were bronchogenic carcinoma, malignant melanoma, malignant lymphoma, and carcinoma of the pancreas and esophagus. Electrocardiographic changes were frequent and correlated fairly closely with the anatomic extent of the disease. The related literature is reviewed.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

Prothrombin levels as measured by the one-stage whole-plasma and the two-stage technics were followed in 80 patients receiving Dipaxin. The induction period is similar to that for Tromexan, namely, 48 to 60 hours and the recovery period 10 to 15 days which is somewhat longer than in the case of either Tromexan or Dicumarol. This recovery period is hastened to some degree by the administration of water-soluble vitamin K preparations and materially accelerated by vitamin K1. The prothrombin level during maintenance therapy is unusually stable. Transient bleeding occurred in two patients. No other toxic effects were observed.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

The effect of sympathectomy on the size of the collateral vessels in acute arterial ligation in a hind limb was measured by an angiographic angiometric technic and by noting the pressure in the ligated artery distal to the ligature. The size of the largest collateral vessel present on the sympathectomized side was the same as that on the innervated side. The blood pressure in the ligated artery distal to the ligature was quite similar on the sympathectomized and innervated sides. The usual increase in temperature on the sympathectomized side was noted. This must be due to a shift of blood from the deeper tissues of the hind limb to the arteriovenous shunts of the skin of the toes, rather than to an increase in collateral blood flow.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

The pathogenesis of congestive heart failure is still obscure. Previous studies showed a decrease in cellular osmolarity during recovery from low output failure. A similar trend was found during recovery from high output failure due to beriberi, suggesting an analogous cellular disturbance. It is postulated that increased cellular osmolarity is an important factor in the retention of water and sodium associated with the development of congestive failure.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

In this second paper of a series of three on electrocardiographic leads, presented primarily from the standpoint of an electrical engineer or physicist, the concept of the lead field introduced in the first paper is considered in detail and several necessarily indirect methods for the estimation of these fields are presented.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

A concept of the ventricular gradient as a quantity which varies with time during the cardiac cycle is presented. Some methods for deriving values of the "mean instantaneous ventricular gradient" and from these the "vector-cardiogram of the gradient" are outlined. Despite obvious shortcomings in these technics, some results of the application of these methods are reported.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID