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  • Title: Transcatheter closure of postoperative residual ventricular septal defects using Amplatzer-type perimembranous VSD occluders.
    Author: Zhang B, Liang J, Zheng X, Jiang G, Yang Z, Zhang L, Zhang Y, Sun H.
    Journal: J Invasive Cardiol; 2013 Aug; 25(8):402-5. PubMed ID: 23913605.
    Abstract:
    OBJECTIVES: The reoperations of postoperative residual ventricular septal defects (VSDs) are associated with higher risks. Our aim is to assess the efficacy and safety of transcatheter closure of postoperative residual VSDs using perimembranous VSD occluders. METHODS: Twenty-one patients with residual VSDs underwent transcatheter closure in our center from January 2005 to January 2012. The study population consisted of 9 males and 12 females whose ages ranged from 1.9 to 54 years (median age, 8.7 years). Eighteen cases had perimembranous VSD repair previously, 3 cases had tetralogy of Fallot surgical treatment. All patients had signs of left ventricle volume overload (Qp/Qs ≥ 1.5). Two types of perimembranous VSD occluders, symmetric and asymmetric, were used in 14 and 7 cases, respectively. The diameter of residual VSDs ranged from 4-16 mm (mean, 7.8 mm). The waist size of occluders ranged from 6-18 mm. RESULTS: There were 0 deaths and 1 serious adverse event. Intravascular hemolysis occurred in 1 patient (4.8%), lasted for 7 days, and recovered with therapy. A trivial intraprosthetic residual shunt was observed in 2 patients (9.5%) after the procedure and 1 patient (4.8%) at 6 months. Two patients (9.5%) had transient left anterior hemiblock and recovered within the first week after the procedure. At the latest follow-up, no atrioventricular block and new-onset aortic regurgitation occurred. CONCLUSIONS: Transcatheter closure is a feasible and safe management option for patients with postoperative residual VSDs and obviates the need for a second surgery and cardiopulmonary bypass.
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