There were no significant differences between the two groups except P-MI group was more elderly, had more female, longer procedure time, higher number of target vessel and stents. At 6 month routine follow-up angiography, there was no significant difference in mean diameter stenosis %, incidence of binary restenosis and late loss between the two groups. Among the major in-hospital outcomes, cardiac death was higher in P-MI group. At 2-year (follow-up, 89.1%), and the cumulative incidence of total death, cardiac death and total major adverse cardiac events (MACEs) were higher in P-MI group, where as repeat PCI including target lesion revascularization (TLR) and target vessel revascularization (TVR). However, when in-hospital mortality was excluded, the major clinical outcomes were not different between the two groups up to 2 years (Table 1).