Identification of Fragmented Balloon Materials in Coronary Arteries by Optical Coherence Tomography

A critical calcific mid-left anterior descending stenosis of a 54-year-old man with unstable angina was treated with a drug-eluting stent. Except for the rupture of a noncompliant balloon during post-dilation, the procedure was uneventful ([Fig. 1][1]A). Shortly before the procedure ended, however