Additive prognostic value of left ventricular ejection fraction to the TIMI risk score for in-hospital and long-term mortality in patients with ST segment elevation myocardial infarction
Tóm tắt
To investigate whether the addition of left ventricular ejection fraction (LVEF) to the TIMI risk score enhances the prediction of in-hospital and long-term death in ST segment elevation myocardial infarction (STEMI) patients. 673 patients with STEMI were divided into three groups based on TIMI risk score for STEMI: low-risk group (TIMI ≤3, n = 213), moderate-risk group (TIMI 4–6, n = 285), and high-risk group (TIMI ≥7, n = 175). The predictive value was evaluated using the receiver operating characteristic. Multivariate logistic regression was used to determine risk predictors. The rates of in-hospital death (0.5 vs 3.2 vs 10.3 %, p < 0.001) and major adverse cardiovascular events (14.6 vs 22.5 vs 40.6 %, p < 0.001) were significantly higher in high-risk group. Multivariate analysis showed that TIMI risk score (OR 1.24, 95 % CI 1.04–1.48, P = 0.015) and LVEF (OR 3.85, 95 % CI 1.58–10.43, P = 0.004) were independent predictors of in-hospital death. LVEF had good predictive value for in-hospital death (AUC: 0.838 vs 0.803, p = 0.571) or 1-year death (AUC: 0.743 vs 0.728, p = 0.775), which was similar to TIMI risk score. When compared with the TIMI risk score alone, the addition of LVEF was associated with significant improvements in predicting in-hospital (AUC: 0.854 vs 0.803, p = 0.033) or 1-year death (AUC: 0.763 vs 0.728, p = 0.016). The addition of LVEF to TIMI risk score enhanced net reclassification improvement (0.864 for in-hospital death, p < 0.001; 0.510 for 1-year death, p < 0.001). LVEF was associated with in-hospital and long-term mortality in STEMI patients and had additive prognostic value to TIMI risk score.
Tài liệu tham khảo
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