Electrocardiographic Changes During Left Heart and Aortic Angiocardiography with Urografin 76% and Isopaque 60%

Abstract

The changes in the ecg [electrocardiogram] were studied during 357 angiocardiographies with injections in the left atrium, left ventricle, or the aorta in 195 patients. In 238 instances Urografin 76% was used and in 119, Isopaque 60%. The ecg changes were always transientand with 6 exceptions slight. In 4 of these cases the changes were caused by obvious mechanical factors and only in 2 were they caused by the contrast medium (Urografin 76%). Slight and transient S-T and T changes were seen somewhat more frequently after Isopaque 60% than after Urografin 76%. However, in a comparative study in 20 patients where identical injections of the 2 media were performed this difference between the 2 contrast agents was not found.