Systemic venous collateral channel causing desaturation after bidirectional cavopulmonary anastomosis: percutaneous...

Area of Science:

• Pediatric Cardiology
• Interventional Cardiology
• Congenital Heart Disease

Background:

• Cyanotic cardiac disease requires surgical palliation, such as the bidirectional Glenn shunt.
• Post-surgical complications can arise, impacting long-term outcomes.
• Progressive cyanosis necessitates investigation into shunt function and potential obstructions.

Observation:

• A patient with a history of bidirectional Glenn shunt developed worsening cyanosis 5 years post-surgery.
• Imaging revealed an unusually large venous collateral decompressing the bidirectional Glenn shunt.
• This collateral provided an abnormal pathway from the superior vena cava to the inferior vena cava.

Findings:

• The large venous collateral was identified as the cause of the patient's recurrent cyanosis.
• Percutaneous closure of the venous collateral using a vascular plug was performed.
• The procedure resulted in excellent clinical outcomes and resolution of cyanosis.

Implications:

• Unusual venous collaterals can develop after bidirectional Glenn shunt procedures.
• Percutaneous closure is a viable and effective treatment for such complex venous anomalies.
• This approach offers a minimally invasive solution for managing post-surgical complications in pediatric cardiac patients.