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Balloon aortoplasty for recoarctation following the subclavian flap operation
Insights
Transluminal balloon aortoplasty is a safe and effective treatment for recoarctation of the aorta in infants, successfully reducing pressure gradients. While intermediate-term success varies, it
Area of Science:
- Pediatric Cardiology
- Interventional Cardiology
- Vascular Surgery
Background:
- Coarctation of the aorta is a congenital heart defect requiring surgical repair.
- Recoarctation can occur after initial surgical repair, necessitating further intervention.
- Subclavian flap repair is a common neonatal surgical approach for coarctation.
Purpose of the Study:
- To evaluate the safety and efficacy of transluminal balloon aortoplasty for recoarctation of the aorta in infants.
- To assess immediate and intermediate-term outcomes of balloon angioplasty in this pediatric population.
Main Methods:
- Retrospective analysis of 5 infants (3-14 months) who underwent balloon aortoplasty for recoarctation post-subclavian flap repair.
- Seven balloon aortoplasty procedures were performed, with two patients receiving repeat interventions.
- Hemodynamic and angiographic parameters were assessed before and after the procedure.
Main Results:
- Balloon aortoplasty significantly reduced the pressure gradient across the recoarcted segment (57.1 to 17.9 mm Hg, P < 0.001).
- The diameter of the recoarcted region increased significantly (2.67 to 3.85 mm, P < 0.05).
- No procedural complications were observed; however, intermediate-term success was unpredictable, with one case of severe restenosis.
Conclusions:
- Transluminal balloon aortoplasty is a safe initial treatment option for recoarctation of the aorta in infants.
- While effective in reducing pressure gradients, long-term success remains variable.
- Further research is needed to define the role of repeat balloon angioplasty for early restenosis.
Abstract:
Transluminal balloon aortoplasty was successfully performed 7 times in 5 children between 3 and 14 months of age who had had the subclavian flap operation for coarctation of the aorta in the neonatal period. In two the balloon aortoplasty was performed twice. All recoarctations presented with upper limp hypertension and marked upper to lower limb pressure gradients. The pressure gradient decreased immediately after the procedure from 57.1 +/- 13.8 mm Hg to 17.9 +/- 15.5 mm Hg, P less than 0.001. The diameter of the recoarcted region increased from 2.67 +/- 1.0 mm to 3.85 +/- 1.23 mm, P less than 0.05. There were no complications attributable to the dilatation technique. Intermediate term success was unpredictable from the initial results or the angiographic appearance of the recoarctation. Follow-up has been for an average of 12.7 months (range 2-30 months). Four patients have pressure gradients from upper to lower limbs of 20 mm Hg or less. In one this has been achieved by repeat balloon aortoplasty. Severe restenosis has occurred in one other patient despite repeating the angioplasty. The procedure is safe and although intermediate term success cannot be predicted in all cases, we propose that balloon aortoplasty be the initial treatment of choice for recoarctation of the aorta. The place of repeating the procedure when early restenosis occurs has yet to be defined.