TCTAP C-103 What's more Challenging? Chronic Total Occlusion or Route with Turns

### Patient initials or identifier number Mr. Chang ### Relevant clinical history and physical exam This 75-year-old male non-smoker had intermittent angina, CCS-2, and dyspnea on exertion, NYHA Fc 2-3. He had hypertension, DM, and hyperlipidemia.Physical examination found minimal basal rales