Overview of in-hospital outcomes in patients undergoing percutaneous coronary intervention with the revived directional coronary atherectomy.

Abstract

We sought to provide clinical insights on the usage rate, indications, and in-hospital outcomes of the revived directional coronary atherectomy (DCA) catheter (Atherocut™) in a Japanese nationwide percutaneous coronary intervention (PCI) registry. Debulking devices such as the revived DCA catheter have become increasingly important in the era of complex PCI. However, little is known about PCI outcomes using a novel DCA catheter in contemporary real-world practice. We analyzed 188,324 patients who underwent PCI in 1112 hospitals from January to December 2018. Baseline characteristics and in-hospital outcomes of patients with stable coronary artery disease or unstable angina who underwent PCI with or without the DCA were analyzed. Overall, 1696 patients (0.9%) underwent PCI with the DCA during the study period, predominantly for left main trunk or proximal left anterior descending artery lesions under a transfemoral approach. Patients in the DCA group were younger and had fewer comorbidities such as hypertension, diabetes mellitus, and chronic kidney disease than patients in the non-DCA group. Stentless PCI using the DCA with drug-coated balloon angioplasty was a preferred treatment strategy in the DCA group (50.0%). Predefined in-hospital adverse outcomes, including mortality (0.2% vs. 0.3%, p = 0.446) and periprocedural complications (1.8% vs. 1.7%, p = 0.697), were comparable between the two groups, whereas the fluoroscopy time was longer and the total contrast volume was higher in the DCA group. In Japan, PCI using the revived DCA catheter is safely performed with low complication rates in patients with stable coronary artery disease or unstable angina.