TY - JOUR ID - 10389 TI - Stent underexpansion in angiographic guided percutaneous coronary intervention, despite adjunctive balloon post-dilatation, in drug eluting stent era JO - ARYA Atherosclerosis Journal JA - ARYA LA - en SN - 1735-3955 AU - Taherioun, Mehrdad AU - Namazi, Mohammad Hassan AU - Safi, Morteza AU - Saadat, Habibolah AU - Vakili, Hossein AU - Alipour-Parsa, Saeed AU - Rajabi-Moghadam, Hasan AU - Pedari, Shamsedin AD - Cardiac Rehabilitation Research Centre, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran AD - Associate Professor, Cardiovascular Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran AD - Professor, Cardiovascular Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran AD - Assistant Professor, Cardiovascular Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran AD - Assistant Professor, Kashan University of Medical Sciences, Kashan, Iran Y1 - 2014 PY - 2014 VL - 10 IS - 1 SP - 13 EP - 17 DO - N2 - BACKGROUND: Stent underexpansion is the most powerful predictor of long-term stent patency and clinical outcome. The purpose of this study was to evaluate the incidence and predictors of stent underexpansion despite adjunctive post-dilatation with non-compliant balloon. METHODS: After elective coronary stent implantation and adjunctive post-dilatation with non-compliant balloon and optimal angiographic result confirmed by the operator, intravascular ultrasound (IVUS) was performed for all the treated lesions. If the treated lesions fulfilled the IVUS criteria, they are considered as the optimal stent group; if not, they are considered as the suboptimal group. RESULTS: From 50 patients enrolled in this study 39 (78%) had optimal stent deployment and 11 (22%) had suboptimal stent deployment. In the suboptimal group 7 (14%) had underexpansion, 2 (4%) malposition, and 2 (4%) had asymmetry. There were no stent edge dissections detected by IVUS. We did not find any correlation between lesion calcification, ostial lesions, stent length, and stent underexpansion. Stent diameter ≤ 2.75 mm had a strong correlation with stent underexpansion. CONCLUSION: Despite adjunctive post-dilatation with noncompliant balloon, using a relatively small stent diameter was a strong predictor for underexpansion. IVUS guided percutaneous coronary intervention (PCI) may be considered for drug eluting stent (DES) implantation in relatively small vessels.   Keywords: Stent, Percutaneous Coronary Intervention, Ultrasound, Post-dilatation  UR - https://arya.mui.ac.ir/article_10389.html L1 - https://arya.mui.ac.ir/article_10389_e3f1728a4835cc3f0349de792571ab24.pdf ER -