Pulmonary perfusion defect and bronchial artery collateral blood flow

Area of Science:

• Cardiology
• Pediatric Cardiology
• Interventional Radiology

Background:

• Tetralogy of Fallot repair can lead to complex postoperative complications, including persistent shunting and abnormal pulmonary perfusion.
• Severe congestive heart failure in a pediatric patient post-tetralogy of Fallot repair necessitates thorough investigation for residual or acquired cardiovascular abnormalities.

Observation:

• A five-year-old child presented with severe congestive heart failure after tetralogy of Fallot repair, with suspected left-to-right shunt.
• Diagnostic imaging revealed significantly reduced perfusion to the right upper lobe, supplied by a prominent bronchial artery.

Findings:

• Bronchial artery embolization using tissue adhesive (bucrylate) was performed to occlude the aberrant vessel.
• Post-embolization radionuclide scans demonstrated improved and more uniform pulmonary artery perfusion over one year.

Implications:

• Bronchial artery embolization is an effective treatment for abnormal pulmonary perfusion secondary to bronchial artery supply in post-surgical congenital heart disease.
• This intervention can lead to significant clinical improvement, resolving symptoms of heart failure and normalizing pulmonary hemodynamics.