A 23-year-old male presents to the Emergency Department with…
A 23-year-old male presents to the Emergency Department with acute chest pain and shortness of breath of a few hours duration. He is well known in the ER by the medical staff due to his frequent visits in the past. He is found to have a temperature of 100.3°F, HR 106/min, BP 110/68, and a pulse ox (room air) of 90%. Chest auscultation reveals bilateral rales with a few wheezes. Initial Lab results reveal WBC: 14.2 (↑), Hgb: 7g/dl (↓), MCV: 92, and total bilirubin: 3.1 mg/dL (↑) with indirect bilirubin: 2.8 mg/dL (↑). Reticulocyte count is elevated. Initial cardiac enzymes are normal. EKG reveals sinus tachycardia. CXR reveals bilateral pulmonary infiltrates with minimal pleural effusion. Which of the following conditions is the most likely diagnosis for this patient?