Objectives: We evaluated the angiographic patterns and predictors of in-stent restenosis (ISR) for ostial lesions of the right coronary artery (RCA) to clarify the mechanism of insoluble restenosis.
Background: Although ISR of the RCA still occurs, limited data is available regarding the associated angiographic findings.
Methods: Between January 2005 and September 2013, we recruited consecutive patients undergoing routine angiography 6-18months after implantation of a drug-eluting stent (DES).