Transcatheter treatment for pulmonary artery occlusion secondary to pulmonary embolism in an infant

Area of Science:

• Cardiology
• Pediatric Surgery
• Interventional Radiology

Background:

• Congenital heart disease, including common atrioventricular canal and tetralogy of Fallot, often requires complex surgical repair in infants.
• Post-surgical complications such as embolic thrombi can lead to pulmonary artery occlusion, posing significant risks.
• Caval vein thrombosis presented a challenge, necessitating a transhepatic approach for intervention.

Observation:

• A 9-month-old infant developed left pulmonary artery occlusion secondary to embolic thrombi following surgical repair.
• Standard high-pressure balloon angioplasty proved ineffective in recanalising the occluded artery.
• A transhepatic approach was employed due to concurrent caval vein thrombosis.

Findings:

• Successful recanalisation of the left pulmonary artery was achieved using cutting balloons.
• Implantation of a stent further secured the recanalised vessel, resulting in an excellent outcome.
• The combined interventional techniques effectively addressed the embolic occlusion.

Implications:

• This case demonstrates the feasibility and efficacy of advanced interventional techniques in managing complex pulmonary artery complications in infants post-cardiac surgery.
• Cutting balloons and stenting offer a viable alternative when traditional angioplasty fails.
• The transhepatic approach provides a crucial pathway for intervention in cases with caval venous involvement.