Klaus Tiroch1, Julinda Mehilli2, Robert A Byrne3, Stefanie Schulz3, Steffen Massberg2, Karl-Ludwig Laugwitz4, Marc Vorpahl5, Melchior Seyfarth5, Adnan Kastrati6. 1. Department of Cardiology, Helios Klinikum Wuppertal, Universität Witten/Herdecke, Wuppertal, Germany. Electronic address: klaus.tiroch@helios-kliniken.de. 2. Department of Cardiology, Klinikum Großhadern, Ludwig-Maximilian Universität, Munich, Germany; Department of Cardiology, DZHK (German Center for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany. 3. Department of Cardiology, Deutsches Herzzentrum, Technische Universitat, Munich, Germany. 4. Department of Cardiology, DZHK (German Center for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany; 1. Department of Cardiology, Medizinisches Klinik Rechts der Isar, Technische Universitat, Munich, Germany. 5. Department of Cardiology, Helios Klinikum Wuppertal, Universität Witten/Herdecke, Wuppertal, Germany. 6. Department of Cardiology, DZHK (German Center for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany; Department of Cardiology, Deutsches Herzzentrum, Technische Universitat, Munich, Germany.
Abstract
OBJECTIVES: This study sought to evaluate the impact of anatomic and procedural variables on the outcome of the unprotected left main coronary artery (uLMCA) itself after drug-eluting stent (DES) implantation. BACKGROUND: There is a controversial debate regarding when and how to perform percutaneous coronary intervention (PCI) for an uLMCA stenosis. METHODS: This analysis is based on a randomized study of 607 patients undergoing PCI for uLMCA, randomized 1:1 to receive paclitaxel- or sirolimus-eluting stents. We evaluated the impact of the SYNTAX score, uLMCA anatomy, and stenting technique on in-stent restenosis (ISR), target lesion revascularization (TLR), and the 3-year outcomes. RESULTS: The 3-year cardiac mortality rate was 5.8%; 235 (39%) patients had a true bifurcation lesion (TBL), and the median SYNTAX score was 27. TBL was associated with a higher need for multiple stents (72% vs. 37%, p < 0.001). TBL was a significant predictor of ISR (23% vs. 14%, p = 0.008) and for TLR (18% vs. 9%, p < 0.001). The need for multiple stents was a predictor of ISR (22% vs. 13%, p = 0.005) and for TLR (16% vs. 9%, p = 0.005). Culotte stenting showed better results compared with T-stenting for ISR (21% vs. 56%, p = 0.02) and for TLR (15% vs. 56%, p < 0.001). We observed a significant association between uLMCA-TLR and SYNTAX scores (9.2% for scores ≤ 22, 14.9% for scores 23 to 32, and 13.0% for scores ≥ 33, p = 0.008). CONCLUSIONS: PCI of uLMCA lesions with DES is safe and effective out to 3 years. TBL and multiple stents were independent predictors for ISR. In the multivariate analysis, independent predictors for TLR were TBL, age, and EuroSCORE (European System for Cardiac Operative Risk Evaluation). (Drug-Eluting-Stents for Unprotected Left Main Stem Disease [ISAR-LEFT-MAIN]; NCT00133237).
RCT Entities:
OBJECTIVES: This study sought to evaluate the impact of anatomic and procedural variables on the outcome of the unprotected left main coronary artery (uLMCA) itself after drug-eluting stent (DES) implantation. BACKGROUND: There is a controversial debate regarding when and how to perform percutaneous coronary intervention (PCI) for an uLMCA stenosis. METHODS: This analysis is based on a randomized study of 607 patients undergoing PCI for uLMCA, randomized 1:1 to receive paclitaxel- or sirolimus-eluting stents. We evaluated the impact of the SYNTAX score, uLMCA anatomy, and stenting technique on in-stent restenosis (ISR), target lesion revascularization (TLR), and the 3-year outcomes. RESULTS: The 3-year cardiac mortality rate was 5.8%; 235 (39%) patients had a true bifurcation lesion (TBL), and the median SYNTAX score was 27. TBL was associated with a higher need for multiple stents (72% vs. 37%, p < 0.001). TBL was a significant predictor of ISR (23% vs. 14%, p = 0.008) and for TLR (18% vs. 9%, p < 0.001). The need for multiple stents was a predictor of ISR (22% vs. 13%, p = 0.005) and for TLR (16% vs. 9%, p = 0.005). Culotte stenting showed better results compared with T-stenting for ISR (21% vs. 56%, p = 0.02) and for TLR (15% vs. 56%, p < 0.001). We observed a significant association between uLMCA-TLR and SYNTAX scores (9.2% for scores ≤ 22, 14.9% for scores 23 to 32, and 13.0% for scores ≥ 33, p = 0.008). CONCLUSIONS: PCI of uLMCA lesions with DES is safe and effective out to 3 years. TBL and multiple stents were independent predictors for ISR. In the multivariate analysis, independent predictors for TLR were TBL, age, and EuroSCORE (European System for Cardiac Operative Risk Evaluation). (Drug-Eluting-Stents for Unprotected Left Main Stem Disease [ISAR-LEFT-MAIN]; NCT00133237).
Authors: Gianluca Rigatelli; Fabio Dell'Avvocata; Marco Zuin; Sara Giatti; Khanh Duong; Trung Pham; Nguyen Si Tuan; Dobrin Vassiliev; Ramesh Daggubati; Thach Nguyen Journal: J Transl Int Med Date: 2017-12-29