RESUMO
Objective: To evaluate the efficacy and safety of overlapping biodegradable polymer sirolimus-eluting stents (EXCEL) in treating the patients with diffuse long coronary lesions (total stent length for per lesion>60 mm). Methods: A total of 71 patients with diffuse long coronary lesions with overlapped EXcellstents implantation in our hospital from 2010-08 to 2012-05 were retrospectively studied. The average age of patients was (62.85 ± 10.26) years and 74.56%with male gender. The clinical endpoints were the major adverse cardiac events (MACE) at in-hospital time and at 2-year follow-up period. Results: The average target lesion was implanted (2.61 ± 0.52) stents, the mean stent diameter was (3.21 ± 0.35) mm and the length was (73.34 ± 13.11) mm. The in-hospital MACE rate was 4.23%, the 2-year target vessel revascularization and MACE rates were 9.86%and 18.31%respectively. Cox regression analysis indicated that smoking (HR 12.102, 95%CI 1.460-100.309, P=0.021), previous history of MI (HR 11.948, 95%CI 1.144-124.726, P=0.038) and previous history of PCI (HR 0.097, 95%CI 0.010-0.990, P=0.049) were the independent risk factors of out of hospital MACE occurrence. Conclusion: EXcellstent implantation was safe and effective for treating the patients with diffuse long coronary lesions, the long term follow-up study revealed that there was the increased risk for MACE and target vessel revascularization.