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  • Title: [Interventional catheterization after the Norwood procedure].
    Author: del Cerro MJ, Fernández A, Espinosa S, Benito F, Burgueros M, García-Guereta L, Rubio D, Deiros L, Castro C, Cabo J, Borches D, Aroca A.
    Journal: Rev Esp Cardiol; 2008 Feb; 61(2):146-53. PubMed ID: 18364183.
    Abstract:
    INTRODUCTION AND OBJECTIVES: To carry out a retrospective analysis of the indications for, and the results and complications of interventional catheterization after the Norwood procedure. METHODS: Between February 1993 and December 2006, 25 interventional catheterizations were performed in 14 patients who had undergone the Norwood procedure, prior to the Glenn or Fontan procedure. RESULTS: Nine angioplasties were carried out for recoarctation in seven of the 14 patients (2 patients developed restenosis after their first angioplasty). Detachment of the left pulmonary artery occurred either immediately or during follow-up in 3 patients who underwent the classical Norwood procedure. Overall, 10 pulmonary artery angioplasties were required in 7 patients. Three patients needed embolization: one of venous collaterals (using coils), one of the left superior vena cava (using an Amplatzer duct occluder), and one of a left Blalock-Taussig shunt (using an Amplatzer duct occluder). Two patients required a cavopulmonary (Glenn) anastomosis, and another underwent fibrinolysis for thrombosis of the superior vena cava and pulmonary artery. Other findings, which were not treated percutaneously, included: stenosis of the supra-aortic trunk (n=6), femoral artery stenosis (n=2), femoral vein thrombosis (n=5), and subclavian vein thrombosis (n=1). The following complications were recorded: arterial ischemia (n=2), cardiac arrest or bradycardia (n=4), and transient atrioventricular block (n=1). CONCLUSIONS: Following stage I of the Norwood procedure, the angiographic and hemodynamic assessments needed for the diagnosis and treatment of pulmonary artery or aortic arch stenosis must be carried out promptly. Although treating recoarctation by angioplasty can be effective, restenosis frequently occurs. With the Sano procedure, detachment of the left pulmonary artery, but not pulmonary artery stenosis, can be avoided. After stage II, the presence of venovenous collaterals must be ruled out, because they frequently require embolization. In these patients, interventional catheterization is associated with a higher incidence of complications than in other groups.
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