Evaluation of Intermountain Risk Score for Short- and Long-Term Mortality in ST Elevation Myocardial Infarction Patients

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.

Association of lactate to albumin ratio and bicarbonate with short-term mortality risk in patients with acute myocardial infarction

“…Studies have shown that in STEMI patients, the Intermountain Risk Score was not inferior to Thrombolysis in Myocardial Infarction and Global Registry of Acute Coronary Events scores for predicting total mortality [23]. We hope that in future studies, combining L/A ratio, bicarbonate and hemoglobin, we will further explore a new scoring system for patients with AMI to assess prognosis.…”

Stress hyperglycemia ratio: an independent predictor for in-hospital major adverse cardiovascular and cerebrovascular events in patients with st-segment elevation myocardial infarction

“…In 2009, Horne et al from the Intermountain Medical Center developed the Intermountain Risk Score (IMRS) to evaluate the overall health status and estimate the mortality risk from all causes in the general population [ 11 ]. Several studies have shown that the IMRS can predict mortality in patients with STEMI or STEMI accompanied by cardiogenic shock [ 12 , 13 ].…”

Risk factors for sudden cardiac arrest in patients with ST-segment elevation myocardial infarction: a retrospective cohort study

“…Cinar et al found that creatinine is a prognostic factor for predicting the risk of in-hospital cardiac arrest for patients with STEMI-related cardiogenic shock [15]. Renal function, which is measured using creatinine levels, is also an element in the Intermountain Risk Score and has been effective in predicting short-and long-term mortality for patients with STEMI [16]. These findings indicate that worsened renal function is a major risk factor for cardiac arrest in patients with STEMI, which is consistent with our findings.…”