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Updated: Jun 4, 2025

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Protein losing enteropathy after the Fontan operation.

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|December 23, 2024
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Protein-losing enteropathy is a serious complication after the Fontan procedure for single ventricle heart disease. Early diagnosis and standardized treatment are crucial for improving outcomes in these aging patients.

Keywords:
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Area of Science:

  • Cardiology
  • Pediatric Cardiology
  • Congenital Heart Disease

Background:

  • The Fontan procedure is a palliative surgery for single ventricle congenital heart disease, enabling survival into adulthood.
  • Aging patients with Fontan circulation face diverse complications, with protein-losing enteropathy (PLE) being a significant cause of morbidity and mortality.
  • PLE after Fontan surgery presents weeks to years post-operation, often linked to adverse hemodynamics.

Purpose of the Study:

  • To review the current understanding of protein-losing enteropathy (PLE) in patients with Fontan circulation.
  • To highlight the importance of a standardized approach to the diagnosis and management of PLE.
  • To discuss potential therapeutic strategies and the need for further research.

Main Methods:

  • Comprehensive literature review of protein-losing enteropathy in Fontan patients.
  • Analysis of contributing factors including lymphatic insufficiency, elevated central venous pressure, and mesenteric circulation abnormalities.
  • Discussion of diagnostic modalities such as multimodality imaging and cardiac catheterization.

Main Results:

  • Protein-losing enteropathy is multifactorial, involving lymphatic issues, high venous pressure, and intestinal inflammation.
  • Diagnosis requires thorough evaluation to identify and treat reversible causes.
  • Advanced cases may necessitate heart transplantation or lymphatic decompression.

Conclusions:

  • Despite advancements, mortality from PLE in Fontan patients remains high.
  • Standardizing PLE definition and management is essential for research and clinical practice.
  • A standardized diagnostic and treatment strategy is proposed to improve patient outcomes.