A 60-year-old female patient was admitted to a hospital for acute transmural infarction. An hour ago the patient's contition got worse. She developed progressing dyspnea, dry cough. Respiratory rate - 30/min, heart rate - 130/min, AP- 90/60 mm Hg. Heart sounds are muffled, diastolic shock on the pulmonary artery. There are medium moist rales in the lower parts of lungs on the right and on the left. Body temperature -36,4°C. What drug should be given in the first place?