Potent Stent-Less Procedure Using Rotational Atherectomy and Drug-Coated Balloon to Right Coronary Ostial Lesion.

Background: Even in the drug-eluting stent era, ostial lesion of the right coronary artery (RCA) still remains therapeutic challenge for interventional cardiologists. Case Series Case 1 (76 y.o. male) with angina on effort underwent transradial stent-less percutaneous coronary intervention (PCI) using rotational atherectomy (RA) followed by drug-coated balloon (DCB) dilation alone (RA/DCB) against a calcified de novo RCA ostial lesion. Case 2 (86 y.o. female) with recurrent unstable angina and hemodialysis underwent transfemoral RA/DCB against a severe repeat in-stent restenosis probably due to calcified nodule in the RCA ostium. In the both patients, PCI was successfully completed under intravascular ultrasound imaging (IVUS) guidance without complications. Follow-up CAG performed 4-5 months after the procedure revealed no significant lumen narrowing in the both RCA ostial lesions.

Conclusions: The both cases suggest that stent-less PCI using RA/DCB under IVUS might be an alternative revascularization therapy of choice for calcified RCA ostial lesions.