Avci, Ilhan IlkerZeren, GonulSungur, Mustafa AzmiAkdeniz, EvliyaSimsek, BarisYilmaz, Mehmet FatihCan, FatmaGurkan, UfukKaragoz, AliTanboga, Ibrahim HalilKarabay, Can Yucel2022-11-022022-11-0220220003-3197https://assets.researchsquare.com/files/rs-1317662/v1/9775f957-af69-4f3f-ac7d-8081942c511d.pdf?c=1649097185http://hdl.handle.net/11727/7957Stent under-expansion is a predictor of restenosis and stent thrombosis. It remains uncertain whether enhanced stent imaging (ESI) (CLEARstent) guidance can improve stent under-expansion. Our aim was to assess the effect of using ESI on stent under-expansion, after percutaneous coronary intervention (PCI) in a single center, cross-sectional observational study. Participants attending our cardiology clinic with stable angina or acute coronary syndrome, from March to September 2020 were recruited. A total of 164 patients who underwent post-PCI ESI (CLEARstent) were compared with 77 age- and sex-matched control patients. Post-procedural minimal lumen diameter (MLD) was calculated. The patients in the ESI-guided PCI group, had a median age of 61 (54-69 IQR 25-75) years and 76.8% (n = 126) were males. The patients in ESI-guided PCI group had a greater minimal lumen diameter compared with the X-ray guided PCI group (beta eta coefficient:2.88 (95% CI:2.58-2.99) vs beta eta coefficient 2.55 (95% CI 2.34-2.63), P < .001). Our finding supports the use of the ESI system to optimize stent placement as expressed by the MLD.enginfo:eu-repo/semantics/openAccessenhanced stent imagingstent under-expansionminimal lumen diameterarticle0008624913000012-s2.0-85139174049