In the National Institute for Clinical Excellence (NICE) guidelines, lesions with a reference vessel diameter of less than 3.0 mm or lesions with a length of greater than 15 mm are considered carrying a high risk of restenosis
. In contrast, lesions with a reference vessel diameter of at least 3.0 mm or a lesion length of 15 mm or less are considered at low risk of restenosis
. We performed a retrospective analysis of consecutive patients undergoing nonurgent percutaneous coronary intervention (PCI) comparing bare metal stent (BMS) with drug-eluting stent (DES) using the NICE guidelines.
Methods and results
Between 2003 and 2007, a total of 3883 patients underwent a nonurgent PCI for a de-novo coronary lesion; 2050 patients were considered to be at low risk and 1833 patients were considered at high risk of restenosis
according to the NICE criteria. In the low-risk group, the 1-year composite of cardiac death, myocardial infarction, and target vessel revascularization was 10.5% in the BMS group and 11.1% in the DES group (P
=0.85). Target lesion revascularization (TLR) was 5.3% by PCI and 1.6% by coronary artery bypass grafting (CABG) in the BMS group and 4.0 and 3.0% in the DES group (P
=0.59 and P
=0.24). In the high-risk group, the composite of cardiac death, myocardial infarction, and target vessel revascularization was 12.1 and 11.0% in the BMS and DES groups (P
=0.48). TLR was 6.7% by PCI and 1.3% by CABG in the BMS group and 3.9 and 2.8% in the DES group (P
=0.02). Definite stent thrombosis (ST) was 0.8% in the BMS-treated patients and 1.7% in the DES-treated patients (P
In patients with lesions carrying a low risk of restenosis
, no differences were observed between BMS and DES in composite end points, TLR, or ST at 1-year follow-up. In patients with lesions carrying a high risk of restenosis
, patients treated with BMS had a significantly higher rate of TLR by PCI, but a significantly lower rate of TLR by CABG compared with patients treated with DES. A nonsignificant lower rate of definite ST was observed in the BMS group compared with the DES group.