<prompt> A 55yr old male patient with his HTN on ACE inhibitors and has CABG four years back is scheduled for hernia surgery He has good effo tolerance which of the following pre-op investigations are orderedRoutine preop evaluation Routine preop evaluationRoutine preop clinicalstress testingRoutine preop clinical angiography to look for potencyRoutine preop clinical exam VQ scan  <response>: ref : willey 10th ed 