Results: There was no statistical difference between two groups in terms of demo- graphic characteristicts even the age was higher in C-shape (Table 1). In C-shape patients, the frequency of proximal and mid region lesions were found more than distal lesions (p¼0.014) but there was no differences in S-shape patients. TFC in patient group with S-shape were significantly higher than patient group with C shape when both groups were compared in terms of TFCs. The two groups lesion regions were compared each other and there were no difference between vascular diameters. Conclusıons: The frequency of lesion was higher in the proximal and mid sections of C shape RCA. TFCs were significantly higher in patients with S-shape group than patients C shape group when they were compared in terms of TFCs. PP-363 The Effects of Stent Postdilatation on Angiographic and Clinical Outcomes in Patients with ST-Elevation Myocardial Infarction Kanber Ocal Karabay 1 , Emine Altuntas 1 , Serkan Kahraman 1 , Ersin Ozen 2 , Onder Demıroz 1 , Omer Yildiz 2 , Vedat Aytekin 2 1 Istanbul Bilim University, Istanbul, 2 Sisli Florence Nightingale Hospital, Istanbul Background: Postdilatation after stent implantation in stable patients has been re- commended to achieve better angiographic results, but its effect in primary percuta- neous coronary intervention (PCI) is less clear. Objective: Our objective was to determine whether postdilatation has an effect on clinical outcomes in STEMI. Our objective was to determine whether postdilatation has an effect on clinical outcomes in STEMI. Methods: This study was a single-center retrospective, observational study including patients who presented with STEMI and were treated with primary PCI between January 2008 and March 2013. Patients with STEMI who were treated with primary PCI were included. Patients with non-ST-elevation myocardial infarction, bypass graft occlusion, or who were not treated with primary PCI were excluded. The patients were divided into two groups: 1) patients who did not undergo postdilatation after stent implantation (Group 1) and 2) patients who underwent postdilatation (Group 2). The patient demographics, risk factors, clinical presentation, procedural properties, and major adverse cardiac events (MACE), including target lesion revascularization, target vessel failure, and cardiac death at the hospital or during follow-up, were compared between the two groups. Conclusıon: In total, 227 patients underwent primary PCI for STEMI and were treated with at least one stent. A total of 218 patients were included (Group 1¼ 57, Group 2 ¼161). The follow-up time was 79.68 58.89 weeks in Group 1 and 141.30  87.07 weeks in Group 2 (p<0.001). The patient demographics, risk factors, clinical presentation and procedural properties were all similar except for the increased use of predilatation (75.4% vs. 94.4%, p<0.001) and intracoronary nitroglycerine in Group 2 (50.9% vs. 71.4%, p<0.05). The mean final TIMI coronary flow was better in Group 1 (2.89  0.31 vs. 2.61  0.66, p<0.05). The MACE rate both in hospital and during follow-up did not differ between Groups 1 and 2. Conclusion: Although stent postdilatation is negatively correlated with the final TIMI flow grade, it does not appear to be correlated with worse long-term clinical outcomes. PP-364 Impaired Kidney Function Associated with Both Syntax Score and Aortic Distensibility in Patients with Stable Coronary Artery Disease Hakan Uçar, Mustafa Gür, Taner S¸eker, Durmus¸Yıldıray S¸ahin, Gökhan Gözübüyük, Caner Türkoglu, Arafat Yıldırım, Onur Kaypaklı, Zafer Elbasan, Murat Çaylı Adana Numune Training and Research Hospital, Department of Cardiology Background: The strong relationships between severe renal dysfunction with coro- nary artery disease (CAD) and arterial stiffness are well known. However, the asso- ciations between the kidney function with SYNTAX Score and aortic distensibility (AD) were not investigated in patients with stable CAD with normal to mildly impaired renal function. We aimed to investigate the association between kidney function with SYNTAX score and AD. Methods: In this study, 411 stable CAD patients in whom coronary angiography was performed were prospectively included (247 male, 164 female; mean age 58.612.4 years). GFR was estimated (eGFR) by the Modification of Diet in Renal Disease formula. Two different groups were determined according to median eGFR values (GFRlow group <100.6, and GRFhigh group 100.6). Coronary angiography was performed based on clinical indications. SS was determined in all patients. AD was calculated from the echocardiographically Results: Patients with GFRlow group were older, and have a history of hypertension and diabetes mellitus and high BMI. SS and AD values of GFRlow group were higher than GFRhigh group (p<0.001 for all). Multivariate regression analysis showed that eGFR was independently associated with diabetes (b;-0.206, p<0.001), hypertension (b;-0.093, p¼0.026), SS (b;-0.445, p<0.001) and AD (b;-0.096, p¼0.019). Conclusıon: Estimated GFR is independently associated with extent and complexity of CAD and AD as well as frequencies of diabetes and hypertension. Importantly, these results may explain, in part, the increase in cardiovascular risk in with slightly impaired renal function. PP-365 Evaluation of Platelet to Lymphocyte Ratio to Predict No-Reflow in Patients With Acute Myocardial Infarction Abdulkadir Yıldız 1 , Abdullah Tuncez 2 , Nihat Polat 1 , Halit Acet 1 , Mustafa Oylumlu 1 , Murat Yuksel 1 , Abdurrahman Akyuz 1 , Mesut Aydin 1 , Mehmet Zihni Bilik 1 , Mehmet Ata Akil 1 , Faruk Ertas 1 , Hasan Kaya 1 , Mehmet Ali Elbey 1 1 Dicle Universty School of Medicine, Department of Cardiology, Diyarbakir, 2 Konya Numune Hospital, Department of Cardiology, Konya Aım: The platelet to lymphocyte ratio (PLR) has been shown as a predictor in patients with malignancies but little is known about the association between PLR and adverse events in the setting of acute ST-segment elevation myocardial infarction (STEMI) treated with primary percutaneous intervention (PCI). Thus, we sought to assess the predictive value of pre-procedural PLR on the development of no-reflow in patients undergoing coronary stent implantation for the treatment of STEMI. Methods: Thrombolysis In Myocardial Infarction (TIMI) flow grades of 287 patients with STEMI treated with primary PCI were assessed. No-reflow was defined as TIMI Grade 2 flows and angiographic success was defined as TIMI 3 flow. Results: Patients were divided into 3 tertiles based upon pre-procedural PLR. No- reflow developed in 6,14 and 43 patients in lower, middle and higher tertiles, respectively (p< 0.001). Pre-procedural PLR was significantly correlated with the neutrophil/lymphocyte ratio (NLR) and age (r:0.697, p<0.001 and r:0.191, p¼0.001;respectively). After regression analysis, pre-procedural PLR remained as a significant predictor of stent thrombosis (OR: 1.010, 95% confidence interval: 1.004- 1.017, p¼0.001) together with pre-procedural NLR (OR: 1.200, 95% confidence interval: 1.059-1.360, p¼0.004). In receiver operating characteristics analysis, the PLR> 160 had 75% sensitivity and 74% specificity and the NLR> 5.9 had 71% sensitivity and 70% specificity in predicting no-reflow. Conclusıon: High pre-procedural PLR is a significant and independent predictor of no-reflow in patients with acute STEMI undergoing primary PCI. Demographics Parameters C-shape (n¼124) S-shape (n¼39) P count Age (years) 66,1512,28 59,9810,82 0,003 Diabetesmellitus 31(% 25) 12(% 30,8) 0,476 Hyperlipidemia 29(% 23,4) 8(% 20,5) 0,709 Smoking 34(% 27,4) 12(% 30,8) 0,685 The comparison of baseline characteristics of the patient groups. Variables GFRlowgroup (n ¼ 205) GFRhighgroup (n ¼ 206) P value DM, n (%) 120 (58.5%) 34 (16.5%) <0.001 HT, n (%) 117 (57.1%) 78 (37.9%) <0.001 Creatinine (mg/dl) 1.050.21 0.720.13 <0.001 SYNTAX Score 17.99.7 8.25.1 <0.001 AD 2.01.1 2.81.6 <0.001 JACC Vol 62/18/Suppl C j October 26–29, 2013 j TSC Abstracts/POSTERS C225 POSTERS