A 49-year-old man with chronic bronchitis has had peripheral edema for the past month. Physical examination shows distended neck veins. Auscultation of the chest shows a 2/6 holosystolic murmur that increases with inspiration. Hemoglobin is 18 g/dL. Which of the following is the most likely diagnosis?
Aortic stenosis
Cor pulmonale
Mitral regurgitation
Polycythemia vera
Pulmonic stenosis
