In a 27-year-old patient with an infarction of the anterior myocardial wall, significant from the haemodynamic aspect, a complex procedure is described by which in the course of four hours after the beginning of complaints normalization of the lumen and blood flow of the coronary artery supplying the infarction focus was achieved. The authors used thrombolytic intravenous treatment which involved infusion of 1.5 million u. of streptokinase (Streptase, Boehringer, Ingelheim) in the course of 45 mins., N-acetylcysteine 2.0 g i.v. (Broncholysin, Spofa) and percutaneous transluminal coronary angioplasty. In the course of 16 days the left ventricular function recovered completely: the ejection fraction was 67% before the infarction, on the first day of infarction 45% and before discharge 64%.