RT Journal A1 Denardo SJ, Carpinone PL, Vock DM, Batich CD, Pepine CJ T1 CHanges to polymer surface of drug-eluting stents during balloon expansion JF JAMA JO JAMA YR 2012 FD May 23 VO 307 IS 20 SP 2148 OP 2150 DO 10.1001/jama.2012.4111 UL http://dx.doi.org/10.1001/jama.2012.4111 AB To the Editor: Drug-eluting stents (DES) have advanced percutaneous treatment of coronary artery disease by reducing restenosis. However, DES have not eliminated restenosis, can serve as a nidus for thrombosis, and are associated with microvascular and endothelial dysfunction.1- 2 We hypothesized that the polymer surface of DES may be damaged during delivery balloon expansion and that microparticles may detach, which could contribute to these limitations.