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Frontal QRST Angle (FQRST) has been correlated with mortality in coronary artery disease and cardiomyopathy patients. Its role as a survival predictor following reperfused ST Elevation Myocardial Infarction (STEMI) remains unknown.
Retrospective evaluation of 267 consecutive patients admitted to a tertiary care center from January 2007 to 2008 with STEMI who underwent primary percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG). Demographics, clinical presentation, electrocardiograms, therapy, and one-year mortality were assessed.
Patients with FQRST <100° had higher survival (80.4%) compared to >100° (66.2%); Figure. Adjusting for significant variables identified during univariate analysis, backward logistic regression revealed; age (Odds Ratio [OR]=5.13, p value=0.046), female gender (OR=7.28, p-value=0.028), Brain Natriuretic Peptide [BNP] (OR=12.97, p-value=0.046), cardiac arrest (OR=29.67, p-value=0.001) and frontal QRS-T angle (OR=2.04, p-value=0.045) as independent one-year mortality predictors. Using these variables, a Risk Score ranging from 0 to 38 was developed, and had excellent discriminatory ability for one-year mortality (C statistic=0.875 [95%CI: 0.813-0.937].
FQRST Angle represents a novel independent predictor of one-year mortality in STEMI patients undergoing PCI/CABG. FQRST based admission risk score offers excellent discriminatory ability for long-term prognosis.
Poster Sessions, Expo North
Saturday, March 09, 2013, 3:45 p.m.-4:30 p.m.
Session Title: STEMI Topics
Abstract Category: 1. Acute Coronary Syndromes: Clinical
Presentation Number: 1171-213
- 2013 American College of Cardiology Foundation