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Percutaneously adjustable pulmonary artery band. An experimental study.
M Higashidate1, T Beppu, Y Imai
1Department of Pediatric Cardiovascular Surgery, Heart Institute of Japan, Tokyo Women's Medical College.
The Journal of Thoracic and Cardiovascular Surgery
|June 1, 1989
Summary
A new percutaneous adjustable device allows fine-tuning of pulmonary artery banding in congenital heart disease. This novel occluder offers precise control for managing excessive pulmonary blood flow in infants.
Area of Science:
- Cardiovascular Surgery
- Biomedical Engineering
- Pediatric Cardiology
Background:
- Pulmonary artery banding is crucial for palliating congenital heart lesions with increased pulmonary flow.
- Readjustment of bands is sometimes necessary for optimal surgical outcomes.
- Current methods lack percutaneous adjustability.
Purpose of the Study:
- To develop and evaluate a novel, percutaneously adjustable occluder for pulmonary artery banding.
- To assess the feasibility and safety of fine-tuning constriction post-implantation.
Main Methods:
- Development of a stainless steel snare occluder with a screw adjuster, delivered via a 5F catheter.
- Percutaneous implantation and adjustment in six mongrel dogs (pulmonary artery or ascending aorta banding).
- Evaluation up to 2 months using cardiac catheterization and angiocardiography.
Main Results:
- The device enabled effective and precise percutaneous adjustment of the band's constriction.
- No complications were observed during the 2-month follow-up period.
- The screw adjuster allowed for fine-tuning of diameter and circumference.
Conclusions:
- This novel readjustable vessel occluder shows promise for percutaneous management of pulmonary artery banding.
- The device may offer a safe and effective solution for patients with congenital heart disease and excessive pulmonary blood flow.
- Further studies are warranted to confirm clinical applicability in pediatric patients.