The patient in the previous question is found to have disease unsuitable for PTCA. Concerning operative revascularization (CABG) the following is/are true:
A.	CABG is more effective than medical treatment for relieving angina and improving physical work capacity
B.	In CABG for unstable angina, there is no difference in late outcome between stable and unstable cohorts
C.	For CABG, the most common arterial graft is the left internal mammary artery
D.	Long term patency is improved when arterial grafts are used but there is no difference in the early mortality rate
Answer:A
The patient in the previous question is found to have disease unsuitable for PTCA. Concerning operative revascularization (CABG) the following is/are true:
A.	CABG is more effective than medical treatment for relieving angina and improving physical work capacity B.	In CABG for unstable angina, there is no difference in late outcome between stable and unstable cohorts C.	For CABG, the most common arterial graft is the left internal mammary artery D.	Long term patency is improved when arterial grafts are used but there is no difference in the early mortality rate