Document Detail

Complex coronary anatomy in coronary artery bypass graft surgery: impact of complex coronary anatomy in modern bypass surgery? Lessons learned from the SYNTAX trial after two years.
MedLine Citation:
PMID:  21168023     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: SYNTAX study compares outcomes of coronary artery bypass grafting with percutaneous coronary intervention in patients with 3-vessel and/or left main disease. Complexity of coronary artery disease was quantified by the SYNTAX score, which combines anatomic characteristics of each significant lesion. This study aims to clarify whether SYNTAX score affects the outcome of bypass grafting as defined by major adverse cerebrovascular and cardiac events (MACCE) and its components over a 2-year follow-up period.
METHODS: Of the 3075 patients enrolled in SYNTAX, 1541 underwent coronary artery bypass grafting (897 randomized controlled trial patients, and 644 registry patients). All patients undergoing bypass grafting were stratified according to their SYNTAX score into 3 tertiles: low (0-22), intermediate (22-32), and high (≥33) complexity. Clinical outcomes up to 2 years after allocation were determined for each group and further risk factor analysis was performed.
RESULTS: Registry patients had more complex disease than those in the randomized controlled trial (SYNTAX score: registry 37.8 ± 13.3 vs randomized 29.1 ± 11.4; P < .001). At 30 days, overall coronary bypass mortality was 0.9% (registry 0.6% vs randomized 1.2%). MACCE rate at 30 days was 4.4% (registry 3.4% vs randomized 5.2%). SYNTAX score did not significantly affect overall 2-year MACCE rate of 15.6% for low, 14.3% for medium, and 15.4% for high SYNTAX scores. Compared with randomized patients, registry patients had a lower rate of overall MACCE rate (registry 13.0% vs randomized 16.7%; P = .046) and repeat revascularization (4.7% vs 8.6%; P = .003), whereas other event rates were comparable. Risk factor analysis revealed left main disease (P = .049) and incomplete revascularization (P = .005) as predictive for adverse 2-year outcomes.
CONCLUSIONS: The outcome of coronary artery bypass grafting was excellent and independent from the SYNTAX score. Incomplete revascularization rather than degree of coronary complexity adversely affects late outcomes of coronary bypass.
Friedrich W Mohr; Ardawan J Rastan; Patrick W Serruys; A Pieter Kappetein; David R Holmes; Jose L Pomar; Stephen Westaby; Katrin Leadley; Keith D Dawkins; Michael J Mack
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of thoracic and cardiovascular surgery     Volume:  141     ISSN:  1097-685X     ISO Abbreviation:  J. Thorac. Cardiovasc. Surg.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-20     Completed Date:  2011-01-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376343     Medline TA:  J Thorac Cardiovasc Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  130-40     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2011 The American Association for Thoracic Surgery. Published by Mosby, Inc. All rights reserved.
Department of Cardiac Surgery, Heart Center, University of Leipzig, Germany.
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MeSH Terms
Cerebrovascular Disorders / etiology
Chi-Square Distribution
Coronary Angiography
Coronary Artery Bypass* / adverse effects,  mortality
Coronary Artery Disease / mortality,  radiography,  surgery*
Disease-Free Survival
Heart Diseases / etiology
Kaplan-Meier Estimate
Logistic Models
Middle Aged
Multicenter Studies as Topic
Randomized Controlled Trials as Topic
Risk Assessment
Risk Factors
Severity of Illness Index
Time Factors
Treatment Outcome
United States

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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