The effects of thyrotoxicosis on the cardiovascular system are well recognized and some are very prominent. Symptoms ascribable to the overaction of the heart such as dyspncea, palpitation, tachycardia, irregularity of the heart, dizziness, and prxcordial pain have been encountered in as many as 80 per cent of a series of 148 cases of thyrotoxicosis (Burnett and Durbin, 1932). The pathological ...

Eighty-five patients with accelerated (preinfarction) angina are reported. Six suffered acute myocardial infarction awaiting catheterization and coronary angiography, so were not studied. Seventy-nine had coronary arteriography and other angiographic and hemodynamic studies. Fifteen of these 79 patients had normal coronary arteriograms; 64 had significant coronary artery obstruction. The clinic...

It has been demonstrated repeatedly that not much importance c attached to the prognostic significance of bundle branch block. Right I branch block has been considered to show a more favorable proj than left bundle branch block. However, the presence of right I branch block, either the typical or atypical form, alerts the physici the basic cardiac disease, particularly disease of the coronary c...

Classical angina pectoris is characterized by recurrent attacks of retrosternal pain brought on by effort and emotion and relieved by rest and the administration of nitroglycerin. It is well known that this classical syndrome has many variations and modifications. In 1959, and again in 1960, Prinzmetal and his colleagues described what they called a "variant form of angina pectoris." According ...