TCT-558 Adjunctive Rotational Atherectomy Before Drug-Eluting Stent Deployment is not an Essential Strategy for Severely Calcified Stenosis Identified by Pre-procedural Intravascular Ultrasound: Mid-term Angiographic and Clinical Outcomes.

Rotational atherectomy (RA) is an effective strategy for the modification of heavily calcified coronary lesions, particularly those which balloon catheters or imaging devices cannot cross. Identification of extended superficial calcium by intravascular ultrasound (IVUS) has led to selected vessel