[Surgery for Recurrent Common Atrioventricular Regurgitation]

Area of Science:

• Pediatric Cardiac Surgery
• Congenital Heart Disease
• Cardiovascular Surgery

Background:

• Common atrioventricular valve (CAVV) regurgitation is a critical issue in patients undergoing single ventricle palliation.
• This condition increases the risk of mortality and adverse outcomes, complicating surgical strategies.
• CAVV repair is technically demanding, particularly in cases requiring intervention before the Glenn operation, often involving complex valve anatomy and the potential for reoperation.

Purpose of the Study:

• To review the challenges and techniques associated with common atrioventricular valve regurgitation in single ventricle palliation.
• To discuss various surgical repair strategies for CAVV regurgitation.
• To highlight the implications of prosthetic valve replacement as a last resort.

Main Methods:

• Review of existing surgical techniques for CAVV repair, including annuloplasty, commissuroplasty, cleft closure, edge-to-edge repair, and bivalvation.
• Discussion of the complexities in pediatric patients with single ventricle physiology.
• Analysis of outcomes associated with prosthetic valve replacement.

Main Results:

• Common atrioventricular valve regurgitation significantly elevates mortality and morbidity in single ventricle palliation.
• Surgical repair techniques for CAVV are varied but challenging, especially in complex pediatric cases.
• Prosthetic valve replacement, while an option for intractable regurgitation, carries substantial risks including mortality and re-intervention.

Conclusions:

• Effective management of common atrioventricular valve regurgitation is crucial for improving outcomes in single ventricle palliation.
• Pediatric cardiac surgeons face significant challenges in performing and re-performing CAVV repairs.
• Prosthetic valve replacement should be considered a high-risk option for severe CAVV regurgitation in this patient population.