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  • Title: Percutaneous management of cyanosis in Fontan patients using Amplatzer occluders.
    Author: Masura J, Bordacova L, Tittel P, Berden P, Podnar T.
    Journal: Catheter Cardiovasc Interv; 2008 May 01; 71(6):843-9. PubMed ID: 18412082.
    Abstract:
    OBJECTIVES: To determine causes of cyanosis and to evaluate percutaneous management of cyanosis in a group of consecutive Fontan patients. BACKGROUND: A variety of communications allow a right-to-left shunt in Fontan circulation causing cyanosis and these communications are amenable to percutaneous closure. METHODS: Between November 1997 and November 2007, 45 consecutive patients ranging in age from 2.5 to 26 years (median 8 years) with Fontan circulation and cyanosis underwent cardiac catheterization and percutaneous closure of superfluous communications using different types of Amplatzer occluders. RESULTS: Altogether, 51 communications were detected and 50 of them were closed. In 5 patients (11.1%), multiple communications were present and were closed. Fenestration was detected in 37 of 41 patients (90.2%) after total cavopulmonary connection and all were closed by Amplatzer septal occluders. Five venous collaterals were revealed in 3 of 41 patients (7.3%) with total cavopulmonary anastomosis and were closed by Amplatzer vascular plugs. In 3 patients, lateral tunnel leaks were detected and were closed by Amplatzer PFO occluders. In 4 patients after Kawashima operation, 3 major pulmonary arterio-venous malformations and single venous collateral contributed to the cyanosis and all were closed using Amplatzer vascular plugs. CONCLUSIONS: Different communications cause cyanosis in Fontan patients. Progressive decline of percutaneous oxygen saturation is suggestive of development of venous collaterals or pulmonary arteriovenous malformations. Superfluous communications are amenable to percutaneous closure using various types of Amplatzer occluders. A novel use of an Amplatzer PFO occluder for the percutaneous closure of a lateral tunnel leak is described.
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