Pulmonary atresia and aortic valve stenosis

Area of Science:

• Pediatric Cardiology
• Congenital Heart Disease
• Surgical Outcomes

Background:

• Pulmonary atresia with ventricular septal defect (PA/VSD) is a complex cyanotic congenital heart defect.
• Severe aortic valve stenosis can coexist, complicating surgical management.
• Aortic valvotomy is a potential intervention for severe aortic stenosis.

Observation:

• A case of PA/VSD with severe aortic valve stenosis is presented.
• A low intraoperative aortic valve gradient (5 mm Hg) led to deferral of aortic valvotomy during aortic to pulmonary arterial shunt placement.
• The patient experienced post-operative low output cardiac failure and died.

Findings:

• Post-mortem examination confirmed severe aortic valve stenosis.
• The intraoperative pressure gradient was an unreliable indicator of aortic valve stenosis severity in this case.
• Failure to address the severe aortic stenosis likely contributed to the poor outcome.

Implications:

• Consideration of aortic valvotomy in cases with suspected severe aortic stenosis, even with low intraoperative gradients, is recommended.
• This case highlights the potential unreliability of intraoperative pressure gradients for assessing aortic stenosis severity.
• Improved diagnostic and therapeutic strategies are needed for complex congenital heart disease with combined valve abnormalities.