PresentationDr. Vizzardi: We describe the case of a man, 55 years old, who was admitted to our Intensive Coronary Unit for severe chest pain. The past history included smoking and hypertension, while there was a family history of coronary artery disease.At the time of admission the blood pressure was 120/ 60 mmHg and the heart rate was 78 beats per minute. The electrocardiogram showed ST segment elevation in the anterior leads, and a transthoracic echocardiogram (TTE) revealed anterior septal and anterior wall akinesis with a severe systolic dysfunction (ejection fraction of 30%).After treatment with aspirin, beta-blockers, nitrates and heparin plus a bolus and continuous infusion of abciximab, the patient underwent coronary angiography showing total occlusion of the left anterior coronary artery. A successful angioplasty was performed. In order to reduce the risk of acute thrombotic reocclusion of the culprit artery, abciximab infusion was continued. After 6 h, the patient developed severe dyspnea and tachypnea. The pulse oximetry revealed a severe oxygen desaturation of 88% with 100% FiO 2 , Laboratory tests showed severe thrombocytopenia (platelets 5,000 mm 3 ) and a significant drop in hemoglobin levels (3.1 g/dl). A Chest radiograph revealed new bilateral diffuse lung opacities infiltrates (Fig. 1).The anticoagulation therapy was stopped immediately, and the patient was transfused with platelets and packed red blood cells. We observed a rapid improvement in the platelet count and hemoglobin values (respectively of 145,000/mm 3 and 13 g/dl). The erythrocyte sedimentation rate and others autoimmune serology tests were negative. The Chest X-ray studies showed a progressive and complete resolution of the alveolar infiltrates; therefore after ten days clopidogrel (75 mg/die) and aspirin (100 mg/die) were restarted.Before discharge, a TTE revealed only moderate left ventricular systolic dysfunction (EF 45%).
Preliminar diagnosisDr. D'Aloia, Dr. Zanini, Dr. Antonioli: The use of abciximab, a chimeric monoclonal antibody Fab fragment specific for platelet glycoprotein IIb/IIIa receptors, in patients presenting with acute ischemic coronary syndromes, is associated with improved outcome after percutaneous coronary angioplasty (PTCA) and stent placement [1-4] but complications include major hemorrhage with anaemia and thrombocytopenia [2][3][4][5].Bleeding can occur in the presence or absence of thrombocytopenia varying from mild to severe, and usually occurring within 24 h after initial exposure to the drug [5]. Pulmonary alveolar haemorrhage (PAH) is a serious but rare life-threatening complication [6][7][8][9][10][11].