Standardized management improves outcomes after the Norwood procedure

Area of Science:

• Pediatric Cardiology
• Neonatal Surgery
• Critical Care Medicine

Background:

• The Norwood procedure (NP) is a complex surgery for neonates with single-ventricle congenital heart defects.
• Management of NP patients has historically lacked standardization across institutions.
• Advances in care necessitate evaluating standardized protocols for improved outcomes.

Purpose of the Study:

• To assess the impact of a standardized management protocol on neonates undergoing the Norwood procedure (NP).
• To compare outcomes between patients receiving selective interventions versus a comprehensive protocol.

Main Methods:

• Retrospective comparison of two groups of NP patients (n=40 each): pre-protocol (2001-2004) and post-protocol implementation (2005-2007).
• Standardized protocol included regional low flow perfusion, near-infrared spectroscopy, phenoxybenzamine, delayed sternal closure, peritoneal drainage, gastrostomy tubes, vocal cord assessment, and home surveillance.
• Endpoints included in-hospital survival and survival to stage 2 palliation (S2P); univariate and multivariate analyses were performed.

Main Results:

• The standardized protocol group (Group 2) demonstrated significantly higher in-hospital survival (95% vs. 70%, P=.003) and survival to S2P (85% vs. 58%, P=.006).
• Univariate analysis identified regional low flow perfusion, gastrostomy usage, and near-infrared spectroscopy as associated with improved survival.
• Multivariate analysis confirmed gastrostomy usage as a predictor of improved hospital survival and survival to S2P, and home surveillance as a predictor of survival to S2P.

Conclusions:

• Protocol-driven management of neonates undergoing the Norwood procedure significantly enhances hospital survival and survival to stage 2 palliation.
• Gastrostomy tube insertion emerged as a critical intervention associated with improved survival for both hospital stay and progression to stage 2 palliation.
• A home surveillance program was identified as a valuable predictor for increased survival to stage 2 palliation, highlighting the importance of post-discharge monitoring.