Ebstein's anomaly with 'reversible' functional pulmonary atresia

Area of Science:

• Pediatric Cardiology
• Congenital Heart Disease

Background:

• Ebstein's anomaly is a rare congenital heart defect.
• Prenatal diagnosis of severe Ebstein's anomaly with functional pulmonary atresia poses significant management challenges.

Observation:

• A fetus diagnosed with Ebstein's anomaly at 32 weeks gestation presented with functional pulmonary atresia and ductal flow reversal.
• Postnatal assessment revealed severe cardiomegaly, a non-opening pulmonary valve, and mild regurgitation.

Findings:

• Conservative management, including gradual prostaglandin E1 reduction and an expectant approach, was initiated.
• Serial echocardiograms demonstrated progressive closure of the ductus arteriosus and opening of the pulmonary valve cusps.
• The infant developed anterograde pulmonary flow and maintained oxygen saturation above 85%.

Implications:

• This case highlights the potential for spontaneous improvement in select cases of Ebstein's anomaly with functional pulmonary atresia.
• Conservative management may be a viable option, avoiding early surgical or interventional procedures.
• Further research into predictive factors for spontaneous resolution is warranted.