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Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
Published on: May 26, 2023
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Repair for Congenital Mitral Valve Stenosis
Eva Maria Delmo Walter1, Roland Hetzer2
1Department of Cardiothoracic, Transplantation and Vascular Surgery, Medizinische Hochschule Hannover, Hannover, Germany.
Summary
Mitral valve (MV) repair offers satisfactory long-term outcomes for children with congenital mitral stenosis (CMS). Repeat interventions may be necessary, but survival rates remain encouraging throughout follow-up.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Surgery
- Valvular Heart Disease
Background:
- Congenital mitral stenosis (CMS) is a rare but serious heart defect in children.
- Surgical repair of the mitral valve (MV) is the primary treatment for CMS.
- Understanding the long-term outcomes of MV repair is crucial for patient management.
Purpose of the Study:
- To evaluate the techniques and long-term outcomes of mitral valve repair in pediatric patients with congenital mitral stenosis.
- To assess survival rates and freedom from reoperation after MV repair for CMS.
- To analyze the functional results of MV repair in different morphological types of CMS.
Main Methods:
- Retrospective analysis of 137 children undergoing MV repair for CMS between 1986 and 2014.
- Classification of CMS into four types based on morphology (typical, hypoplastic, supravalvar ring, parachute/hammock).
- Surgical techniques included commissurotomy, chordal division, papillary muscle splitting, and mitral ring resection tailored to morphology.
Main Results:
- At 1 and 15 years postoperatively, freedom from reoperation was 89.3% and 52.8%, respectively.
- Cumulative survival rates at 1 and 15 years were 92.3% and 70.3%, respectively.
- Mortality unrelated to repair accounted for 20% of deaths; 23 patients required repeat MV repair, and 3 underwent replacement.
Conclusions:
- Mitral valve repair provides satisfactory long-term functional outcomes for children with congenital mitral stenosis.
- While repeat repair or replacement may be necessary, MV repair remains a viable option for CMS.
- Tailoring surgical techniques to specific CMS morphologies can optimize results.
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