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Conal enlargement for diffuse subaortic stenosis.

S Y DeLeon1, M N Ilbawi, D A Roberson

  • 1Heart Institute for Children, Christ Hospital and Medical Center, Oak Lawn, IL 60453.

The Journal of Thoracic and Cardiovascular Surgery
|December 1, 1991
PubMed
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Conal enlargement effectively treats diffuse subaortic stenosis in children, offering a safe and preferable surgical option. This procedure preserves the aortic valve and shows positive long-term outcomes for pediatric patients.

Area of Science:

  • Cardiovascular Surgery
  • Pediatric Cardiology
  • Congenital Heart Disease

Background:

  • Diffuse subaortic stenosis presents a significant challenge in pediatric cardiology.
  • Previous surgical interventions for subaortic stenosis can lead to recurrent obstruction.

Purpose of the Study:

  • To evaluate the efficacy and safety of conal enlargement procedures for diffuse subaortic stenosis in infants and children.
  • To assess long-term outcomes and complications associated with these surgical techniques.

Main Methods:

  • Retrospective analysis of twelve pediatric patients undergoing conal enlargement for diffuse subaortic stenosis.
  • Procedures included transatrial conal enlargement and modified Konno procedure.
  • Follow-up included echocardiography to assess outflow gradients.

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Main Results:

  • Eleven of twelve patients survived with improved subaortic gradients (mean 7 +/- 11 mm Hg postoperatively).
  • Long-term follow-up (mean 1.5 +/- 1 years) showed sustained positive outcomes.
  • Complications included complete heart block in two patients and aortic anulus hypoplasia in one.

Conclusions:

  • Conal enlargement with aortic valve preservation is a preferable and effective surgical strategy for diffuse subaortic stenosis in pediatric populations.
  • These procedures can be safely performed, offering good long-term results for affected children.