Bailout stenting for critical coarctation in premature/critical/complex/early recoarcted neonates
Matthias Gorenflo1, Derize E Boshoff, Ruth Heying
1Paediatric Cardiology, University Clinic Leuven, Leuven B 3000, Belgium.
Background:
Surgical repair of critical coarctation can be problematic in premature, critical, complex, or early postoperative neonates.
Objectives:
We aimed to review our experience with stent implantation to defer urgent surgery to an elective time.
Methods:
Fifteen neonates with severe aortic coarctation: five premature-hypotrophic (1,400-2,000 g), six critical and complex cardiac malformation, four early (1 day [0-2 days]; median [range]) after surgical coarctectomy or complex arch reconstruction. Bare coronary stents (diameter 4.0 [3.5-5.0] mm; length 10 [8-16] mm) were used. Stents were removed surgically depending on clinical needs.
Results:
Adequate aortic flow was obtained in 15 patients. The femoral artery was preserved in 13/15 patients. Two deaths occurred before stent removal and were nonprocedure related. In patients with simple stented coarctation, the stent was removed after 2.8 [0.2-5.0] months. In complex cardiac malformation, stents were finally removed 3.0 [0.2-78] months after implantation.
Surgical Technique:
simple coarctectomy end-to-end in eight, extensive arch patch reconstruction in four. One patient is awaiting stent removal. The final maximum systolic velocity (cw-Doppler) across the aortic arch was 1.7 [1.2-2.5] m/sec.
Conclusions:
In premature/critical/complex neonates with severe coarctation, bailout stenting followed by early or late surgical coarctectomy appears a promising concept.