Objective:

To analyze the prognostic value of Shock Index (SI) and Modified Shock Index (mSI) at discharge for long-term mortality after acute myocardial infarction (AMI), and to assess differences between STEMI and NSTEMI, highlighting the relevance of these indices in clinical practice.

Key Findings:

• Both SI and mSI at discharge are significant predictors of long-term mortality after AMI, indicating their potential role in risk stratification.
• Patients with SI and mSI above the 75th percentile had worse survival outcomes, suggesting a need for closer monitoring.
• Predictive strength of SI and mSI differed between STEMI and NSTEMI patients, which may influence treatment approaches.

Interpretation:

The findings suggest that SI and mSI at discharge can effectively stratify long-term mortality risk in AMI patients, emphasizing their utility in post-discharge care planning and potential integration into clinical guidelines.

Limitations:

• The study is observational and may be subject to confounding factors, which could affect the validity of the results.
• Data was collected from a single registry, which may limit generalizability; further multi-center studies are needed.

Conclusion:

SI and mSI at discharge are valuable tools for predicting long-term mortality in AMI patients, warranting their consideration in clinical practice for risk stratification and management.