A 68-year-old man presents with progressive shoness of breath. He had a metallic hea valve replacement 13 years ago for severe aoic stenosis. Which of the following clinical findings is most indicative of a failing aoic valve replacement?
Clicking sound to S2 Early diastolic murmur heard at the left sternal edge New onset atrial fibrillation Ejection systolic murmur heard in the aoic region