Relationship between risk-adjustment tools and the pediatric logistic organ dysfunction score.

Area of Science:

• Pediatric Cardiology
• Surgical Risk Assessment
• Healthcare Quality Improvement

Background:

• Congenital heart disease (CHD) patient outcomes are typically measured by mortality.
• Low mortality rates in CHD make mortality an insufficient primary outcome measure.
• Risk-adjustment tools (RACHS-1, ABC) correlate with mortality, but an alternative outcome is needed.

Purpose of the Study:

• To assess the correlation between established risk-adjustment tools and postoperative organ dysfunction in pediatric CHD patients.
• To determine if the Pediatric Logistic Organ Dysfunction (PELOD) score can serve as a reliable alternative outcome measure for risk-adjusted comparisons.

Main Methods:

• Utilized data from the Virtual PICU Systems database (2009-2010) for postoperative CHD patients.
• Employed Spearman rank correlation to examine relationships between RACHS-1/ABC scores and PELOD scores.
• Used Kruskal-Wallis analysis to assess PELOD score consistency across institutions.

Main Results:

• Analyzed 1,981 patient cases from 12 institutions.
• Found statistically significant, positive correlations between RACHS-1 and PELOD (r s = .353) and between ABC and PELOD (r s = .328).
• Observed significant variability in PELOD scores across centers for similar case complexities (P < .04).

Conclusions:

• RACHS-1 categories and ABC levels correlate with postoperative organ dysfunction (PELOD) in CHD.
• The observed correlation was weak, suggesting potential limitations of the PELOD score.
• Further research is required to identify a more accurate morbidity metric for CHD patients.