Aims: The aim of this multicentre study was to investigate the in-hospital and midterm outcomes of rotational atherectomy (RA) followed by metallic stent implantation.
Methods and results: Between 2002 and 2013, 1,176 de novo lesions with calcified coronary lesions treated by RA and metallic stent implantation at nine institutions were assessed. Patients with ST-segment elevation myocardial infarction (STEMI) within 30 days, cardiogenic shock before the procedure, lesions with thrombus, and in-stent restenosis were excluded from the current analysis. In-hospital major adverse cardiac events (MACE) occurred in 8.3% of cases, mainly driven by periprocedural myocardial infarction. The incidence of MACE was 16.0% at one-year and 24.9% at two-year follow-up, both driven by target vessel revascularisation (13.5% at one year and 19.8% at two years). Multivariable analysis revealed that dialysis was an independent predictor for both in-hospital MACE (OR 2.33, 95% CI: 1.11-4.87, p=0.03) and follow-up MACE (HR 4.14, 95% CI: 2.87-5.96, p<0.001), whilst drug-eluting stent (DES) use was associated with a reduction in follow-up MACE (HR 0.42, 95% CI: 0.26-0.67, p<0.001).
Conclusions: RA appears to be safe and effective with acceptable in-hospital and follow-up MACE considering the severity of patient and lesion characteristics. DES implantation following RA was associated with a reduction in MACE during the follow-up period.