Larger Centers May Produce Better Outcomes: Is Regionalization in Congenital Heart Surgery a Superior Model?

Area of Science:

• Pediatric Cardiac Surgery
• Healthcare Outcomes Research
• Health Services Research

Background:

• Correlation between pediatric heart surgery center volume and patient outcomes, particularly mortality, has been studied for decades.
• The current literature strongly suggests an association between higher center volume and improved mortality rates.
• Geographic variations in population density pose challenges to regionalizing specialized pediatric cardiac surgery services.

Purpose of the Study:

• To review the existing literature on the relationship between pediatric cardiac surgery center volume and patient outcomes.
• To highlight the limitations of using mortality rates as the sole measure of outcomes in pediatric cardiac surgery.
• To advocate for a broader definition of outcomes in pediatric cardiac surgery.

Main Methods:

• Literature review of studies investigating the volume-outcomes relationship in pediatric cardiac surgery.
• Analysis of trends in outcome definitions over the past two decades.
• Discussion of the implications of population density on service regionalization.

Main Results:

• A consistent association between center volume and mortality in pediatric cardiac surgery is implicated by current research.
• Regionalization of pediatric cardiac surgery is complicated by population distribution in the United States.
• Larger centers may possess advantages in achieving timely performance measures.

Conclusions:

• While mortality remains a critical outcome, the definition of success in pediatric cardiac surgery needs expansion.
• Future research and clinical focus should incorporate patient- and family-centered measures like morbidity and hospital experience.
• A comprehensive approach to outcomes, including cost-value, is necessary as the specialty evolves.