A 65 year-old male presents to the office with chest pain. …

A 65 year-old male presents to the office with chest pain.  For the past 2 years, he experienced the same pain about once every 2 months.  Although the pain was brought on by exertion, it had always relieved completely with rest after a few minutes.  In the past week, he has had 3 episodes of the same pain, but the most recent episode this morning lasted 10 minutes and didn’t resolve completely. What is the next step in evaluation of this patient?

A crescendo-decrescendo, grade I/VI, early systolic murmur i…

A crescendo-decrescendo, grade I/VI, early systolic murmur is found in an asymptomatic patient. It is best heard in the left 2nd ICS and along the left sternal border when supine. It does not radiate and disappears with sitting. Which of the following is the most likely diagnosis?