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  • Title: Use of stents to maintain atrial defects and fontan fenestrations in congenital heart disease.
    Author: Bar-Cohen Y, Perry SB, Keane JF, Lock JE.
    Journal: J Interv Cardiol; 2005 Apr; 18(2):111-8. PubMed ID: 15882157.
    Abstract:
    Maintaining patent atrial septal communications or fenestrations can be vital in conditions requiring adequate decompression of the atria or Fontan baffle. We have recently deployed stents for this purpose, and the aim of this retrospective analysis is to describe our experience. All 26 patients undergoing such stent placement were retrospectively studied and for neonates with hypoplastic left heart syndrome (HLHS) and patients with Fontan fenestrations, their data were compared to controls undergoing transseptal static balloon dilation during the same time period. All 7 stented neonates with HLHS survived to their Norwood procedure and 57% survived to hospital discharge, similar to those who had static balloon dilation. Complications occurred in both HLHS groups but transient complete heart block was only seen in the control group, which also had larger balloons used (10.3 mm vs 7 mm, P=0.002). The success rate for patients undergoing stent placement in Fontan fenestrations was 64% compared to 76% with dilation alone. Complications were seen in 64% of the Fontan stented group compared to 39% for controls. There were 5 other patients with complex lesions (3 of whom were on the Extracorporeal Membrane Oxygenator) in whom stent placement successfully maintained atrial communication patency. Atrial septal stent placement in neonates with HLHS with restrictive defects is effective and appears at least as safe as static balloon dilation. On the other hand, initial fenestration stent placement is indicated only after extracardiac Fontan procedures in which the previous fenestration location cannot be found.
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