[An allergic reaction due to i.v. urokinase administration]

We notify a case of anaphylactic reaction due to urokinase which was administered to a patient with extended anterior acute myocardial infarction. He showed some allergic reaction symptoms such as: cutaneas eritema and dyspnea with bronchial spasm which disappeared with an intravenous cortisone drug. Therefore we think that urokinase too might give rise to anaphylactic reaction.