Impact of Post-Operative Infection after CABG on Long-Term Survival

Area of Science:

• Cardiovascular Surgery
• Infectious Diseases
• Outcomes Research

Background:

• Coronary artery bypass grafting (CABG) is a prevalent cardiac surgical procedure.
• Post-operative infections negatively impact patient outcomes and long-term prognosis following CABG.
• Understanding infection's role in long-term survival is crucial for improving patient care.

Purpose of the Study:

• To evaluate the impact of perioperative infections on 5-year and 10-year survival rates in patients undergoing elective on-pump CABG.
• To identify specific types of infections that significantly affect long-term mortality after CABG.
• To analyze risk factors associated with reduced survival post-CABG.

Main Methods:

• Prospective observational study conducted from July 2010 to August 2012.
• Infections classified using European Centre for Disease Prevention and Control (ECDC) definitions.
• Statistical analysis to determine the effect of infection and other parameters on survival.

Main Results:

• Infection was a significant risk factor for reduced survival (HR 3.10, CI 2.20-4.28).
• Other risk factors included advanced age, peripheral artery disease, reduced left ventricular ejection fraction (LVEF), and post-operative myocardial infarction.
• Pneumonia and bloodstream infections (BSI) were the only infection types significantly associated with increased long-term mortality.

Conclusions:

• Post-operative infections are strongly linked to increased 5-year and 10-year mortality in CABG patients.
• Targeting pneumonia and BSI prevention may improve long-term survival after CABG.
• Managing infection risk is critical for optimizing long-term outcomes in cardiac surgery patients.