Patient: 49 year-old man. Chief Complaint: Dyspnea at rest and dyspnea on exertion. History of Present Illness: Diagnosed with upper respiratory tract infection 10 days previously. Past Medical History: Obese (BMI not available), but no significant past medical history. Social History: Noncontributory Family History: Noncontributory Laboratory Findings: See Table 1 and Image 1, part A.