Outcomes of rotational atherectomy for severely calcified coronary lesions: A single center 5‐year experience

OBJECTIVES: The aim of this study was to investigate the influences of accumulated experience on rotational atherectomy (RA) operation regarding to in-hospital outcomes in the drug-eluting stent (DES) era. METHODS: Between 2015 and 2019, 540 de novo lesions with calcified coronary lesions treated by RA and DES implantation at our center were retrospectively assessed. In-hospital major adverse cardiac events (MACE) were defined as all cause death, cardiac death, target vessel revascularization, and stroke. RESULTS: From 2015 to 2019, RA operations were 22, 60, 102, 157, and 199 cases, respectively. Rates of procedural complications were 4.5, 3.3, 11.8, 8.3, and 7.5%, respectively. Rates of in-hospital MACE were 0, 0, 3.9, 2.5, and 2.0%, respectively. Compared with planned RA, bailout RA was associated with more contrast use (207.5 ± 82.8 ml vs. 189.2 ± 70.0 ml, p = .008). As for procedural complications and in-hospital outcomes, no differences were observed between two strategies. Logistic regression revealed that hypertension was independently associated with complications (OR 5.830, 95% CI 1.382-24.591, p = .016). For MACE, independent risk factors were heart failure (OR 17.593, 95% CI 1.475-209.816, p = .023) and procedural complications (OR 127.629, 95% CI 15.135-1,076.258, p < .001). CONCLUSIONS: Along with the rapid increase of RA use and accumulated experience, rates of complications and MACE went up first and then dropped down. Hypertension was found to be an independent risk factor of procedural complications. For in-hospital MACE, independent risk factors were heart failure and procedural complications.