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Left Main Revascularization With PCI or CABG in Patients With Chronic Kidney Disease: EXCEL Trial Percutaneous coronary intervention versus coronary artery bypass grafting in patients with three-vessel or left main coronary artery disease: 10-year follow-up of the multicentre randomised controlled SYNTAX trial Current treatment of significant left main coronary artery disease: A review Quality of Life after Everolimus-Eluting Stents or Bypass Surgery for Treatment of Left Main Disease Long-term outcomes following mini-crush versus culotte stenting for the treatment of unprotected left main disease: insights from the Milan and New-Tokyo (MITO) registry Provisional versus elective two-stent strategy for unprotected true left main bifurcation lesions: Insights from a FAILS-2 sub-study Second vs. First generation drug eluting stents in multiple vessel disease and left main stenosis: Two-year follow-up of the observational, prospective, controlled, and multicenter ERACI IV registry Successful bailout stenting strategy against lethal coronary dissection involving left main bifurcation Why NOBLE and EXCEL Are Consistent With Each Other and With Previous Trials Meta-Analysis of Comparison of 5-Year Outcomes of Percutaneous Coronary Intervention Versus Coronary Artery Bypass Grafting in Patients With Unprotected Left Main Coronary Artery in the Era of Drug-eluting Stents

Original Research2014 Jan;7(1):29-36.

JOURNAL:JACC Cardiovasc Interv. Article Link

Impact of coronary anatomy and stenting technique on long-term outcome after drug-eluting stent implantation for unprotected left main coronary artery disease

Tiroch K, Mehilli J, Byrne RA et al. Keywords: CABG; DES; ISR; LCX; LMCA; MACE; MI; PCI; SYNTAX score; TBL; TLR; coronary artery bypass graft surgery; drug-eluting stent(s); in-stent restenosis; left circumflex coronary artery; left main; left main coronary artery; major adverse cardiac event(s); myocardial infarction; percutaneous coronary intervention; stenting technique; target lesion revascularization; true bifurcation lesion; uLMCA; unprotected left main coronary artery

ABSTRACT


OBJECTIVESThis 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.


BACKGROUNDThere is a controversial debate regarding when and how to perform percutaneous coronary intervention (PCI) for an uLMCA stenosis.

METHODSThis 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.

RESULTSThe 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).

Copyright © 2014 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.