Failure to achieve a satisfactory cardiac outcome after isolated coronary surgery in low-risk patients

Area of Science:

• Cardiovascular Surgery
• Patient Safety
• Clinical Outcomes Research

Background:

• Coronary artery bypass grafting (CABG) is a common procedure.
• While generally safe, adverse events can occur even in low-risk patient populations.
• Understanding determinants of these events is crucial for improving surgical quality.

Purpose of the Study:

• To investigate the incidence and predictors of major early adverse events in low-risk patients undergoing isolated CABG.
• To identify modifiable factors contributing to postoperative mortality and complications.

Main Methods:

• Analysis of 2397 low-risk patients (EuroSCORE II <2%, no major comorbidities) from the multicentre E-CABG registry (Jan 2015-Dec 2016).
• Logistic regression was used to identify independent predictors of in-hospital death.
• Outcomes included mortality within 30 days of surgery.

Main Results:

• The incidence of death within 30 days was 0.46% (11 out of 2397 patients).
• Porcelain aorta (OR 34.3) and E-CABG bleeding grades 2-3 (OR 30.2) were significant independent predictors of hospital death.
• Eight of the 11 deaths were estimated to be potentially preventable.

Conclusions:

• Major complications and mortality, though rare, can occur in low-risk CABG patients.
• Identifying modifiable causes of adverse events is essential for developing preventative strategies.
• These findings can inform quality improvement initiatives in cardiac surgery.