Conflict of interest: Nothing to report.
Coronary Artery Disease
Objectifying the impact of incomplete revascularization by repeat angiographic risk assessment with the residual SYNTAX score after left main coronary artery percutaneous coronary intervention
Article first published online: 8 APR 2013
Copyright © 2013 Wiley Periodicals, Inc.
Catheterization and Cardiovascular Interventions
Volume 82, Issue 3, pages 333–340, 1 September 2013
How to Cite
Capodanno, D., Chisari, A., Giacoppo, D., Bonura, S., Lavanco, V., Capranzano, P., Caggegi, A., Ministeri, M. and Tamburino, C. (2013), Objectifying the impact of incomplete revascularization by repeat angiographic risk assessment with the residual SYNTAX score after left main coronary artery percutaneous coronary intervention. Cathet. Cardiovasc. Intervent., 82: 333–340. doi: 10.1002/ccd.24642
- Issue published online: 26 AUG 2013
- Article first published online: 8 APR 2013
- Accepted manuscript online: 31 AUG 2012 03:45AM EST
- Manuscript Accepted: 28 AUG 2012
- Manuscript Received: 24 AUG 2012
- residual SYNTAX score;
- SYNTAX score;
- unprotected left main coronary artery disease
We investigated the prognostic accuracy of a standardized quantification of incomplete revascularization after percutaneous coronary intervention (PCI) of the unprotected left main coronary artery (ULMCA) named residual SYNTAX score (rSS).
Prognostic implications of coronary lesions left untreated after ULMCA PCI are confounded by the lack of a uniform definition of incomplete revascularization.
Baseline SYNTAX score (bSS), rSS, and the difference between bSS and rSS (ΔSS) were assessed in predicting the risk of 2-year cardiac mortality of 400 patients undergoing ULMCA PCI.
The rSS and bSS showed comparable discrimination (rSS area under the curve [AUC] 0.72, 95% confidence interval [95% CI] 0.61–0.83; bSS AUC 0.73, 95% CI 0.62–0.84). Hosmer–Lemeshow statistics were 0.60 for rSS (P = 0.44) and 2.45 (P = 0.12) for bSS, reflecting better calibration ability of the rSS. The ΔSS provided the worst discrimination and calibration characteristics (AUC 0.55; 95% CI 0.44–0.66; Hosmer–Lemeshow statistic 3.13, P = 0.08). The rSS was independently associated with the 2-year adjusted-risk of cardiac mortality (hazard ratio 1.07, 95% CI 1.03–1.12, P = 0.001). The risk information from both the rSS and bSS slightly improved the discrimination ability compared with risk information from each single risk assessment (AUC 0.74, 95% CI 0.62–0.86) with a net reclassification improvement of +14.2% and +13.6% over rSS and bSS alone, respectively.
The rSS carries a prognostic value as independent predictor of 2-year cardiac mortality. Compared with a single assessment of the SYNTAX score, information coming from repeat assessment of the angiographic risk may improve the ability to discriminate and reclassify patients undergoing ULMCA PCI. © 2013 Wiley Periodicals, Inc.