Electrocardiographic Abnormalities Associated with Intravenous Urography

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Abstract
THE prevalence of reversible reactions to intravenous contrast mediums has been reported to be approximately one in 2000,1 and mortality with the use of these agents is considerably lower (8.6 per million to 19 per million).2 , 3 When it occurs, death is usually sudden, is seen more often in older patients and is frequently associated with cardiac arrest.1 Despite these observations, prospective studies on the cardiovascular effects of intravenous urography in man are rare. An isolated report of the electrocardiographic effects of intravenous contrast agents in man used a low-volume (20-ml) injection.4 We therefore monitored the electrocardiograms of patients undergoing routine . . .