摘要:

This study was undertaken to establish the long-term prognosis of the initial attack of myocardial infarction. For this purpose, 285 patients who had their initial attack between 1932 and 1942, and who survived the first two months, were followed until their demise or the end of the study (Jan. 1, 1952). Two-thirds of them were found to have lived over 5 years, two-fifths over 10 years and one-tenth over 15 years. Some of the factors which determine long-term survival were analyzed. The importance of recognizing the presence of a large group of mild cases of myocardial infarction capable of long-term survival is stressed.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

Observations on the intact circulation of the hamster reveal that following a meal high in fat content there occurs increased adhesiveness and aggregation of the red blood cells and sometimes clumping of the platelets, accompanied by slowing of the circulation. These changes are reversible, the circulation resuming a normal appearance with complete clearing of the lipemia. Similar circulatory changes can be produced by the injection of large molecular solutions. These circulatory alterations, when severe enough, cause pathologic changes in the blood-brain barrier. The significance of these findings and their possible relationship to multiple sclerosis and vascular thrombosis are discussed.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

Asymptomatic male patients with healed myocardial infarction were studied with respect to the effect of exercise on cardiac output, mean circulation time, blood pressure, and pulse rate. A group of normal men in the same age group served as a control group. It was found that the hemodynamic response of the patients to exercise is very similar to that of the normal group except that the pulse rate in the former increases more than that of the latter group. The probable significance of this minor difference is discussed.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

Cardiac output, venous and arterial pressure, total peripheral resistance and blood volume were measured in patients with acute myocardial infarction, with and without shock, and on recovery, and in patients without heart disease. Cardiac output falls to below normal after myocardial infarction, and rises significantly, though not always to normal, on recovery. Cardiac output was very low when myocardial infarction was complicated by shock. Fall of cardiac output to very low levels following myocardial infarction does not necessarily lead to development of shock. Venous pressure tended to be elevated in patients in shock as a result of myocardial infarction. Cardiac output was subnormal in patients with arteriosclerosis but without clinical heart disease: this was not attributable to reduced body oxygen consumption.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

This case of atherosclerotic aneurysm of the popliteal artery is of interest because the patient was a man 35 years old and because the condition was discovered only because palpation of the peripheral arteries was included as a part of routine examination. Only after the aneurysm had been found was a history of intermittent claudication elicited. The indications for the surgical treatment of popliteal aneurysms are discussed.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

A preoperative diagnosis of valvular calcification that indicates advanced degeneration and implies potential immobility is now of more than academic interest. It is also of importance in uncovering aortic valvular disease that may contraindicate mitral commissurotomy. Surgical experience indicates that conventional roentgenography has a low positive yield. Fluoroscopy, in our hands, has a high positive yield but has the disadvantages of dependence upon individual interest and knowledge and of failure to provide a permanent record verifiable by others. In this study, planigraphy is demonstrated to be superior to all other methods described for the detection of intracardiac calcification.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

The electrocardiogram in uncomplicated coarctation of the aorta in infants reflects the pattern of the fetal circulation and serves as a useful prognostic guide. When the fetal ductus inserts proximally to the region of coarctation and closes at birth, right ventricular enlargement is present at birth but is retrogressive. Furthermore, in this situation collateral circulation has begun to develop before birth so that the left ventricle can compensate on assumption of the postnatal circulation, and the prognosis is good. When the insertion of the fetal ductus is distal to the coarctation, progressive, and frequently fatal, left ventricular enlargement and failure develop shortly after birth. Modifications of these electrocardiographic patterns in the production of right bundle branch block are also discussed and illustrated.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

The spatial vectorcardiogram and the spatial ventricular gradient of normal subjects in the last trimester of pregnancy and in some of the same subjects following delivery have been studied. It was found that the vectorcardiograms could be divided into two groups on the basis of the form of the QRS sÊ-loops, as has been previously reported for other normal subjects. In some instances records taken after delivery or records taken during pregnancy with the subject in deep inspiration altered both the orientation and the form of the QRS sÊ-loop. Since these alterations were most likely due to changes in position of the heart and extracardiac tissues, it is suggested that these are factors determining the configurations of the two types of normal QRS sÊ-loops.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

The ballistocardiograph records the vigor of cardiac ejection and the speed of diastolic filling. It provides a practical means of studying the physiologic response of the heart in its adjustment to the stress of exercise. The application of the light ballistocardiographic exercise test to subjects without clinical or electrocardiographic evidence of heart disease, to hypertensive subjects, to patients with coronary artery disease and to those suspected of having myocarditis has provided information of clinical importance which cannot be obtained from any other means of physical diagnosis or from the ballistocardiogram at rest.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

Sixty-four ballistocardiograms were obtained on a portable equalized electromagnetic ballistocardiograph from 18 young adult males with acute rheumatic fever. Thirteen of these subjects had clinical findings suggestive of heart involvement and five did not. Abnormal records were obtained from only one patient in each group. It appears, therefore, that abnormal ballistocardiograms are not often found in acute rheumatic fever even when evidences of cardiac involvement are present.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID