Evaluation of Intermountain Risk Score for Short- and Long-Term Mortality in ST Elevation Myocardial Infarction
Tufan Çınar1, Faysal Şaylık2, Tayyar Akbulut2
1Department of Cardiology, 546642Sultan II. Abdulhamid Han Training and Research Hospital, Istanbul, Turkey.
Insights
The Intermountain Risk Score (IMRS) effectively predicts short- and long-term mortality in ST-elevation myocardial infarction (STEMI) patients. Its predictive power is comparable to established scores like TIMI and GRACE.
Area of Science:
- Cardiology
- Clinical Research
- Biostatistics
Background:
- ST-elevation myocardial infarction (STEMI) poses significant short- and long-term mortality risks.
- Accurate risk stratification is crucial for managing STEMI patients.
- Existing risk scores like TIMI and GRACE have limitations in predicting STEMI outcomes.
Purpose of the Study:
- To evaluate the Intermountain Risk Score (IMRS) for predicting short- and long-term mortality in STEMI patients.
- To compare the predictive performance of IMRS against established risk scores (TIMI, GRACE).
Main Methods:
- Retrospective and cross-sectional study design.
- Inclusion of 1057 consecutive STEMI patients.
- Analysis of short- and long-term mortality endpoints using multivariable COX regression and ROC curve analysis.
Main Results:
- IMRS was significantly higher in non-surviving STEMI patients.
- IMRS independently predicted both short-term (HR: 1.482) and long-term mortality (HR: 1.915).
- IMRS demonstrated non-inferior predictive capability compared to TIMI and GRACE scores for mortality.
Conclusions:
- The Intermountain Risk Score (IMRS) is a valuable tool for predicting prognosis in STEMI patients.
- IMRS offers comparable or superior predictive accuracy to TIMI and GRACE scores.
- This study is the first to validate IMRS for STEMI mortality prediction.
Abstract:
The aim of this study was to examine the Intermountain Risk Score (IMRS) for short- and long-term mortality in ST elevation myocardial infarction (STEMI) patients and compare it with the well-known risk scores, such as the Thrombolysis in Myocardial Infarction (TIMI) and the Global Registry of Acute Coronary Events (GRACE). In this retrospective and cross-sectional study, 1057 consecutive patients with STEMI were evaluated. The end-points of the study were short- and long-term mortality. The overall mortality rate was 16% (n = 170 patients). The IMRS was significantly higher in STEMI patients who did not survive compared with those who survived. According to multivariable COX proportional regression analysis, the IMRS was independently related to both short- (HR: 1.482, 95% CI: 1.325-1.675, p < .001) and long-term mortality (HR: 1.915, 95% CI: 1.711-2.180, p < .001). The comparison of receiver operating characteristic curves revealed that the IMRS had non-inferior predictive capability for short- and long-term mortality than the TIMI and GRACE risk scores. To the best of our knowledge, this is the first study to show that the IMRS can predict short- and long-term prognosis of patients with STEMI. Further, the IMRS' predictive value for overall mortality was non-inferior compared with TIMI and GRACE scores.
More Related Videos
Related Concept Videos
01:30Acute Coronary Syndrome I: Introduction
01:30Acute Coronary Syndrome III: Diagnostic Studies
01:28Acute Coronary Syndrome IV: Interprofessional Care
01:27Mitral Stenosis IV: Nursing Management