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The role of balloon dilation of native aortic coarctation in neonates, infants and children
Published online by Cambridge University Press: 19 August 2008
Abstract
In 38 children with aortic coarctation between the age of three weeks and 16 years, 44 balloon dilation procedures were attempted. At initial catheterization (n=38), the mean gradient dropped from 49.6±21.2 mm Hg prior to dilation, to 15.3±15.8 mm Hg after the procedure (p>0.05). Twenty-six patients were recatheterized 3–24 months after the initial procedure. The mean gradient remained low at 12.7±15.2 mm Hg (range 0–64). Six of the 26 (23%) patients required a second dilation because of significant recoarctation. This proved successful in four, but in two patients, the second dilation failed, and they were referred for elective surgery. Thus, good overall results were obtained in 24 of the 26 (92.3%) patients undergoing reinvestigation following balloon dilation. Complications included requirements for blood transfusion in 9/44 (20%), chest pain during balloon inflation in 3/44 (6.8%), rupture of the balloon in 3/44 (6.8%), and femoral arterial thrombectomy in 3/44 (6.8%). At a mean clinical follow-up of 21 months, 21% of the patients had a weaker femoral pulse on the side used for balloon dilation, while 21% had mild hypertension measured in the arms despite the absence of a significant gradient. One patient (2.6%) developed an aortic aneurysm as a complication of the procedure. We conclude that balloon dilation is a safe and effective procedure in the majority of the patients with native aortic coarctation.
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