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JOURNAL ARTICLE
MULTICENTER STUDY
Transcatheter closure of perimembranous ventricular septal defects in infants and children using the Amplatzer perimembranous ventricular septal defect occluder.
American Journal of Cardiology 2007 April 2
There are very few published reports of the transcatheter closure of perimembranous ventricular septal defects (PMVSDs) using the Amplatzer PMVSD occluder with encouraging initial results. This report presents initial and 1-year results from 54 patients with PMVSDs who underwent transcatheter closure at 5 different institutions with the Amplatzer PMVSD occluder. Sixty-five patients with PMVSDs were enrolled at 5 European centers. Eleven of the 65 patients did not fulfill the patient selection criteria at the initial echocardiographic evaluation or at cardiac catheterization. As a result, a total of 54 patients underwent attempted transcatheter closure using the Amplatzer PMVSD occluder. The median age of the patients was 5.1+/-3.6 years (range 0.3 to 13), and the median weight 18.5+/-10.3 kg (range 5 to 45). Devices were permanently implanted in 49 of 54 patients. Complete occlusion of the communication at 1-year follow-up was observed in 46 of 49 patients (94%). Main early procedural complications included (1) device embolization (2 patients), (2) severe bradycardia with hemodynamic compromise (2 patients), and (3) Mobitz II (2:1) heart block (1 patient). Late procedural complications included complete heart block (1 patient). No other complications were observed during follow-up. In conclusion, the Amplatzer PMVSD occluder is promising device that can be used for transcatheter closure in selected patients with PMVSDs. Further studies and long-term follow-up are required before this technique enters routine clinical practice.
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