Predictive Value of the Modified GRACE Scoring System for All-Cause Mortality in Patients with Acute Myocardial...

Area of Science:

• Cardiology
• Clinical Medicine
• Biomarkers

Background:

• Acute myocardial infarction (AMI) poses a significant mortality risk.
• The Global Registry of Acute Coronary Events (GRACE) score is a traditional tool for risk stratification in AMI.
• Enhancing the predictive accuracy of existing scoring systems is crucial for patient management.

Purpose of the Study:

• To develop and validate a modified GRACE scoring system for improved prediction of all-cause mortality in AMI patients.
• To compare the performance of the modified GRACE score against the traditional GRACE score.

Main Methods:

• Retrospective analysis of 4561 AMI patients from January 2015 to December 2020.
• Inclusion of B-type natriuretic peptide precursor (BNP) and traditional risk factors into a modified GRACE score.
• Comparison of predictive performance using Receiver Operating Characteristic (ROC) curves and multifactorial COX regression.

Main Results:

• The modified GRACE score demonstrated a significantly higher Area Under Curve (AUC) of 0.809 compared to the traditional GRACE score's AUC of 0.786.
• Factors associated with all-cause mortality included age, cardiac function class, history of coronary artery disease, aspirin use, beta-blocker use, and the modified GRACE score.
• Integrated Discrimination Improvement (IDI) indicated a positive enhancement of the modified GRACE score over the traditional one.

Conclusions:

• The modified GRACE scoring system, incorporating BNP, offers superior predictive performance for all-cause mortality in AMI patients.
• This enhanced scoring system provides a more accurate risk stratification tool for clinical decision-making in AMI.