Related Experiment Videos
Protein-losing enteropathy after Fontan operation for tricuspid atresia (imperforate tricuspid valve)
Insights
Protein-losing enteropathy resolved in a child after Fontan surgery by adding a bioprosthetic valve. This suggests valved conduits may improve outcomes for complex congenital heart disease patients.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Surgery
- Gastroenterology
Background:
- The Fontan operation is a palliative procedure for complex single-ventricle congenital heart defects.
- Protein-losing enteropathy (PLE) is a serious complication following Fontan surgery.
- Atrioventricular (AV) type Fontan repair with a valveless conduit can lead to complications.
Observation:
- A 7-year-old girl with tricuspid atresia and a hypoplastic right ventricle developed PLE one year post-Fontan.
- Recatheterization revealed severe conduit regurgitation and right ventricular enlargement.
- The patient underwent successful insertion of a bioprosthetic valve at the right atrial appendage.
Findings:
- The bioprosthetic valve insertion resulted in dramatic clinical improvement and resolution of PLE.
- This suggests that conduit function and right ventricular status are critical in managing post-Fontan complications.
- Severe conduit regurgitation was a key factor contributing to PLE in this case.
Implications:
- The use of a valved conduit is recommended for AV type Fontan repair in specific patient profiles.
- This approach may prevent or mitigate complications like PLE and conduit regurgitation.
- Optimizing Fontan physiology through surgical modifications can significantly improve long-term outcomes in pediatric cardiac patients.
Abstract:
Protein-losing enteropathy occurred in a 7-year-old girl with tricuspid atresia, concordant ventriculo-arterial connexions and a relatively large hypoplastic right ventricle, one year after an atrio-ventricular type of Fontan operation by means of a valveless woven Dacron conduit. Severe conduit regurgitation and a marked enlargement of the hypoplastic right ventricle were demonstrated at recatheterization. Insertion of a bioprosthetic valve at the base of the right atrial appendage led to a dramatic clinical recovery of the patient. The use of a valved conduit is recommended when an atrioventricular type of Fontan repair is planned in patients with tricuspid atresia, concordant ventriculo-arterial connexions and relatively large hypoplastic right ventricle.