In an attempt to learn more about the physiologic changes in the cardiovascular system during angiocardiography and the nature of mixing of radio-opaque dyes with blood, radiopotassium and Diodrast I' dilution curves were obtained before and during angiocardiography. Studies in patients without valvular disease and with mitral valvular disease indicated an increased cardiac output during angioc...

SELECTIVE angiocardiography of the left side of the heart is of prime importance for the accurate preoperative diagnosis of those lesions involving the mitral valve, ventricular septum, outflow tract of the left ventricle, or the aorta itself. The injection of contrast medium into the pulmonary artery for the demonstration of the left atrium and left ventricle is less satisfactory than the dire...

We present here some of our experience of angiocardiography; it deals exclusively with children and infants as a result of our working in a children's hospital.* When a careful clinical examination, electrocardiograms, X rays, and the simple laboratory tests do not make the diagnosis certain, we have two principal procedures: heart catheterization with study of the pressures and gas content fro...

The assessment of inoperability of bronchial carcinoma by angiocardiography has received little attention in this country, and it is the purpose of this paper to discuss the value of this investigation by analysing our results in 31 cases at Leicester Chest Unit. Since the introduction of angiocardiography by Robb and Steinberg in 1938 many authors have described its use in the differential dia...

I NJECTION of large amounts of contrast medium into the circulation for diagnostic angiocardiography has been shown to cause a significant transient increase in cardiac output (18 to 94 per cent), circulating blood volume (10 per cent), and left ventricular end-diastolic and pulmonary artery (PA) pressures.' Increases in pulmonary artery,2 left atrial, and left ventricular end-diastolic pressur...

Ventricular performance was assessed before and after angiocardiography in 22 patients with normal left ventricle, mitral stenosis, aortic stenosis, and myocardial disease. The increased circulating blood volume known to occur after angiocardiography is a determinant of the increased ventricular pre-load. The after-load is unchanged. Patients with normal left ventricle and some patients with va...