The mortality rate was 10.8% for patients undergoing CABG within 6 hours of the onset of symptoms, 23.8% in those Hillis et al 2011 ACCF/AHA CABG Guideline e665 undergoing CABG 7 to 24 hours after symptom onset, 6.7% in patients undergoing CABG from 1 to 3 days, 4.2% in those who underwent surgery from 4 to 7 days, and 2.4% after 8 days.266 In an analysis of data from 150 patients with STEMI who did not qualify for primary PCI and required CABG, the in-hospital mortality rate increased according to the time interval between symptom onset and surgery.239 The mortal- ity rate was 6.1% for subjects who underwent CABG within 6 hours of pain onset, 50% in those who underwent CABG 7 to 23 hours after pain onset, and 7.1% in those who underwent CABG after 15 days.239 Lastly, in another study, the time interval of 6 hours was also found to be important in STEMI patients requiring CABG. The mean time from symptom onset to CABG was significantly shorter in survi- vors versus nonsurvivors (5.1 2.7 hours versus 11.4 3.2 hours; P 0.0007).235 In patients with cardiogenic shock, the benefits of early revascularization were apparent across a wide time interval between 1) MI and the onset of shock and 2) MI and CABG. Therefore, although CABG exerts its most profound salutary effect when it is performed as soon as possible after MI and the appearance of shock, the time window in which it is beneficial is quite broad. Apart from the timing of CABG, the outcomes of STEMI patients undergoing CABG depend on baseline demographic variables. 