Cerebral Perfusion After Repair of Congenital Diaphragmatic Hernia with Common Carotid Artery Occlusion After ECMO...

Area of Science:

• Pediatric Neurology
• Neonatal Surgery
• Cerebral Perfusion Imaging

Background:

• Congenital diaphragmatic hernia (CDH) is a serious condition requiring complex medical and surgical interventions.
• Extracorporeal membrane oxygenation (ECMO) is a life-support system used for neonates with severe respiratory or cardiac failure.
• Right-common-carotid-artery (rCCA) occlusion is a potential complication following ECMO in CDH patients, impacting cerebral blood flow.

Purpose of the Study:

• To prospectively evaluate cerebral perfusion in children after CDH repair.
• To assess the impact of rCCA occlusion post-ECMO on cerebral blood flow (CBF).
• To compare cerebral perfusion between children with and without rCCA occlusion.

Main Methods:

• Cerebral magnetic resonance perfusion imaging (rCBF) was performed on 29 children (2 years old) with a history of CDH repair.
• The study included 14 patients with rCCA occlusion post-ECMO and 15 control patients with CDH without ECMO.
• Regional CBF was measured cortically and subcortically in both hemispheres and compared intra-individually and between groups.

Main Results:

• Patients with rCCA occlusion exhibited intra-individual hemispheric differences, with reduced subcortical perfusion in the right hemisphere.
• Approximately one-third of patients with rCCA occlusion showed a >20% reduction in right hemisphere rCBF compared to the left.
• Despite these side differences, mean rCBF in the rCCA occlusion group was comparable to the control group.

Conclusions:

• Intra-individual hemispheric perfusion differences are observed after rCCA occlusion in pediatric CDH patients.
• Overall right hemisphere perfusion is generally sufficient following rCCA occlusion, attributed to collateral blood supply.
• Cerebral perfusion imaging provides valuable insights into the effects of interventions like ECMO and rCCA occlusion in CDH survivors.