The Physiologic Effect of Contrast Media Used for Angiocardiography

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Abstract
The deaths from angiocardiography at Wisconsin General Hospital were reviewed and found to be two per cent of 249 patients. These 5 deaths are reported briefly. Investigation was carried out to determine the hemodynamic effects of contrast substances on 12 dogs. In general, there was a temporary increase in right atrial and pulmonary arterial pressure followed by a rather marked decrease in systemic arterial pressure and tachycardia. The significance of these findings is discussed in relation to shunts within the heart or between the aorta and pulmonary artery.