Comparison of Drug-Eluting Stent and Plain Old Balloon Angioplasty After Rotational Atherectomy in Severe Calcified and Large Coronary

抄録

Drug-eluting stent (DES) is well known to be effective in severely calcified lesion after rotational atherectomy (ROTA). However, there are still some situations when stents should be avoided and plain old balloon angioplasty (POBA) should be the preferred option. The present study aims to explore whether POBA is comparably effective to DES in large and calcified coronary pretreated by ROTA in clinical outcomes.

Consecutive patients treated for severely calcified lesions in the large (≥ 3 mm) coronary using ROTA + DES or ROTA + POBA were retrospectively analyzed. The major adverse cardiac events (MACE), including all-cause/cardiac death and target lesion revascularization (TLR) at 1 year and 2 years posttreatment, were compared between groups using the Cox regression analysis to identify independent predictors of TLR and MACE.

The analysis included 285 cases in the ROTA + DES group and 47 cases in the ROTA + POBA group, without relevant differences in clinical baseline characteristics. Of note, lesion length was greater in the ROTA + DES group (37.2 versus 19.3 mm, P < 0.001); the ROTA + DES group had a higher rate of chronic total occlusion (CTO) lesions, with 8.4%, and the ROTA + POBA group had none. The inhospital/30-day mortality rate (5.3%, ROTA + DES; 6.4%, ROTA + POBA) and the 12- and 24-month all-cause/cardiac mortality rate (9.3%, ROTA + DES; 7.7%, ROTA + POBA) were not significantly different between the two groups. TLR rates were not significantly different between the two groups at 12 (4.6%, ROTA + DES; 4.3%, ROTA + POBA) and 24 (5.3%, ROTA + DES; 6.4%, ROTA + POBA) months.

Outcomes were comparable for ROTA + DES and ROTA + POBA in severely calcified large coronary artery intervention with respect to midterm death or TLR rate, especially for short lesion of < 20 mm.