Readmission Following Perioperative Myocardial Injury: Clinical Predictors and Impact on Mortality

Area of Science:

• Cardiology
• Perioperative Medicine
• Outcomes Research

Background:

• Perioperative myocardial injury (PMI) after noncardiac surgery is linked to high mortality.
• Readmission within 30 days of PMI exacerbates mortality risk.
• Identifying readmission risk factors is crucial for improving PMI outcomes.

Purpose of the Study:

• To examine risk factors for readmission after discharge following surgery complicated by PMI.
• To assess the impact of readmission on 1-year mortality in PMI survivors.

Main Methods:

• Retrospective cohort analysis of patients with PMI over a 10-year period.
• Multivariable logistic regression to identify predictors of readmission.
• Kaplan-Meier survival analysis to assess mortality.

Main Results:

• 2.5% of surgical patients (5159/207,729) experienced PMI.
• Readmitted patients were older, had higher peak troponin, and more comorbidities (cancer, lung, kidney disease).
• Readmission independently predicted higher 1-year mortality (33.9% vs. 22.2%).

Conclusions:

• Readmission following PMI is associated with increased subsequent mortality.
• Risk factors for readmission include advanced age, extent of myocardial injury, and chronic comorbidities.
• Identifying at-risk patients is vital for improving outcomes and resource allocation.