title: [Ischemic and non ischemic electrophysiologic changes during selective coronary arteriography. Their role in the pathogenesis of the electrocardiographic changes and arrhythmias (author's transl)].
abstract: The results of a study made in mae recording the right ventricular monophasic action potential (RV MAP) by suction electrocatheter during coronary arteriography (35 cases) are reported. Normally, when no coronary spasm is present, coronary arteriography provokes a prolongation of MAP of the myocardial diffusion of the contrast medium. On the contrary in five cases, in which right coronary spasm occurred, modifications of a clear ischemic pattern were seen: a shortening of the RV MAP phase 2 in two cases; a reduction of the amplitude and rate of the RV MAP phase 0 in one case; both shortening of total duration of RV MAP and changes of its 0 phase in other two cases. The Authors compare these clinical observations with the experimental data and discuss the role of these different electrophysiological alterations in the pathogenesis of the electrocardiographic changes and arrhythmias.
mesh_terms: D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000209:etiology*; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology*; D004562:Electrocardiography; D004594:Electrophysiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography
vernacular_title: Modificazioni elettrofisiologische di natura ischemica e non ischemica durante coronagrafia selecttiva. Lore ruolo nel determinismo dells modificazioni eletrocardiofrafiche e dell aritmie.