Abstract: Objective To investigate the native vessel percutaneous coronary intervention (NV-PCI) and bridge vascular interventional therapy (graft-PCI) strategies on prognosis in patients with coronary artery bypass grafting (CABG), by following up the occurrence of major adverse cardiovascular events (MACE). Methods A total of 312 patients who relapsed chest pain after the CABG and had a successful interventional treatment were divided into two groups: 215 patients for NVPCI group and 97 patients for graft-PCI group. We observed cardiac death, acute myocardium infarction (AMI) and target vessel revascularization (TVR) after visiting the patients out of hospital for 34 months on average. The risk factors of MACE were analyzed by multivariable Logistic regression after the interventional treatment for the bridge vascular lesions. Results The proportions of patients without MACE, AMI and TVR were significantly higher in NV-PCI group than those in graft-PCI group (P＜0.05). There were no significant differences in death rate and survival rate between two groups (P＜ 0.05). Multivariable Logistic regression analysis showed that age of bridge [OR(95%CI):1.011(1.002-1.020), P=0.017], diabetes mellitus [OR(95%CI):2.375 (1.414-3.989), P=0.001] and graft-PCI [OR(95%CI):1.873(1.090-3.219)，P=0.023] were independent risk factors for prognosis of impacting the bridge vascular interventional treatment. Conclusion The clinical prognosis is much better in NV-PCI group than that of graft-PCI group. The age of bridge, diabetes mellitus and graft-PCI are independent risk factors for clinical prognosis of impacting the bridge vascular interventional treatment.

Key words: coronary artery bypass, off-pump, angioplasty, transluminal, percutaneous coronary, graft occlusion, vascular, treatment outcome, prognosis