Usefulness of SYNTAX score to select patients with left main coronary artery disease to be treated with coronary artery bypass graft.
OBJECTIVE
The purpose of our study was to investigate the utility of the SYNTAX (Synergy Between Percutaneous Coronary Intervention With TAXUS and Cardiac Surgery) score in aiding patient selection for percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) in a large contemporary registry of patients undergoing revascularization of left main coronary artery.


BACKGROUND
The SYNTAX score has been developed as a combination of several validated angiographic classifications aiming to grade the coronary lesions with respect to their functional impact, location, and complexity.


METHODS
Between March 2002 and December 2008, 819 patients with left main coronary artery disease underwent revascularization in 2 Italian centers. We compared clinical outcomes of PCI versus CABG in patients with SYNTAX score < or =34 and patients with SYNTAX score >34.


RESULTS
The rates of 2-year mortality were similar between CABG and PCI in the group of patients with SYNTAX score < or =34 (6.2% vs. 8.1%, p = 0.461). Among patients with SYNTAX score >34, those treated with CABG had lower rates of mortality (8.5% vs. 32.7%, p < 0.001) than those treated with PCI. After statistical adjustment, revascularization by PCI resulted in a similar risk of death compared with CABG in patients with SYNTAX score < or =34 (hazard ratio: 0.81, 95% confidence interval: 0.33 to 1.99, p = 0.64) and in a significantly higher risk in patients with SYNTAX score >34 (hazard ratio: 2.54, 95% confidence interval: 1.09 to 5.92, p = 0.031).


CONCLUSIONS
A SYNTAX score threshold of 34 may usefully identify a cohort of patients with left main disease who benefit most from surgical revascularization in terms of mortality.
Capodanno
Davide
D
Department of Cardiology, Ferrarotto Hospital, University of Catania, Catania, Italy. dcapodanno@gmail.com
Capranzano
Piera
P
Di Salvo
Maria Elena
ME
Caggegi
Anna
A
Tomasello
Davide
D
Cincotta
Glauco
G
Miano
Marco
M
Patané
Martina
M
Tamburino
Claudia
C
Tolaro
Salvatore
S
Patané
Leonardo
L
Calafiore
Antonio Maria
AM
Tamburino
Corrado
C
D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects / Q000401:mortality; D017023:Coronary Angiography; D001026:Coronary Artery Bypass / Q000009:adverse effects / Q000401:mortality; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000401:mortality / Q000601:surgery / Q000628:therapy*; D005260:Female; D006801:Humans; D007558:Italy; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D018579:Patient Selection; D011237:Predictive Value of Tests; D016016:Proportional Hazards Models; D012042:Registries; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome