A 62-year-old male presents with progressively worsening dyspnea on exertion, orthopnea, and paroxysmal nocturnal dyspnea over the last 6 months. Physical examination reveals a wide pulse pressure, a bounding peripheral pulse, and a high-pitched, decrescendo diastolic murmur best heard at the left sternal border with the patient leaning forward. What is the most likely diagnosis?
✓ Correct Answer: Option B
The symptoms of heart failure, wide pulse pressure, bounding pulse, and a decrescendo diastolic murmur are classic findings for aortic regurgitation, indicating blood flowing back into the left ventricle during diastole.