Technical note: Improving orbital atherectomy efficacy for calcified nodules using a curved guide catheter

Abstract

Objectives Endovascular therapy (EVT) for calcified nodules in patients with peripheral artery disease (PAD) remains challenging in achieving favorable outcomes. This study aims to investigate the effectiveness of orbital atherectomy (OA) for calcified nodules using an IM catheter to precisely control the device and achieve optimal engagement with the target lesion. Methods We performed EVT for a calcified nodule in the right common femoral artery using an OA. Due to the large vessel size, controlling the OA to effectively engage the lesion was challenging. To overcome this, we utilized an IM catheter to guide the OA toward the target lesion. Results The use of the IM catheter successfully directed the OA to the calcified lesion, resulting in significant lumen enlargement. The procedure was completed without any complications, and the OA achieved effective debulking of the calcified nodule. Conclusions The combination of OA and IM catheter facilitated effective contact with the target lesion, improving the performance of the debulking device. This approach may enhance the management of calcified lesions in large-diameter arteries during EVT, potentially leading to better clinical outcomes.