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A reversible pulmonary artery band: preliminary experience
A P Rocchini1, S R Gundry, R H Beekman
1Department of Pediatrics, University of Michigan, Medical Center, Ann Arbor 48109-0204.
Journal of the American College of Cardiology
|January 1, 1988
Summary
A novel, reversible pulmonary artery band using absorbable sutures was tested in puppies. Balloon angioplasty successfully relieved the band, reducing pressure and improving pulmonary artery size without damage, suggesting potential for congenital heart disease management.
Area of Science:
- Cardiovascular Surgery
- Pediatric Cardiology
- Biomedical Engineering
Background:
- Pulmonary artery banding is an infrequently used surgical technique for congenital heart disease.
- A reversible pulmonary artery band could increase its application in infant management.
- Development of a relief mechanism without open-heart surgery is key.
Purpose of the Study:
- To evaluate a novel, reversible pulmonary artery band in a canine model.
- To assess the efficacy of balloon angioplasty for band relief.
- To determine the safety and patency of the pulmonary artery post-angioplasty.
Main Methods:
- Implantation of an absorbable suture pulmonary artery band in seven 1-week-old puppies.
- Cardiac catheterization and pulmonary balloon angioplasty at 6 months of age.
- Hemodynamic and angiographic assessment before and after angioplasty, with follow-up and postmortem evaluation.
Main Results:
- Balloon angioplasty significantly decreased right ventricular pressure (101 to 42 mm Hg) and outflow tract gradient (59 to 7 mm Hg).
- Angioplasty increased band site diameter (8.7 to 14.9 mm).
- Measurements remained stable at 2-month follow-up, with no pulmonary artery damage observed.
Conclusions:
- A reversible pulmonary artery band is feasible using absorbable sutures.
- Balloon angioplasty is an effective method for relieving the band.
- This technique shows promise for managing congenital heart disease in infants.