We have previously reported a simple technique for preparatory staging and subsequent interventional completion of an extracardiac Fontan procedure that anatomically and hemodynamically closely mimics a standard extracardiac Fontan. We describe herein modifications that simplify the original procedural sequence and that may allow wider application. Percutaneous completion can be achieved even without a radiofrequency probe, using electrocautery. Fenestration is also easy to perform if there is a clinical indication.
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