Objective To evaluate the value of transthoracic echocardiographic (TTE) in transcatheter closure of ventricular septal defects (VSD) in Children.
Methods 855 patients aged 3 ∼ 14 years (average 6.8 years) with VSD were occluded, including 828 patients with membranous or perimembranous VSD, 9 patients with muscular VSD and 18 patients with intracristal VSD. TTE was performed before catheterization to examine the VSD and the rims, to evaluate the occluder device, and to evaluate the efficacy of the device occlusion on parasternal long axis of left ventricle, short axis of aorta and five chamber views.
Results The size of VSD measured with TTE were 3.0 ∼ 7.0mm (average 4.8mm). Mild risidual shunt was revealed in 38 patients, which disappeared in 24 ∼ 48h after the procedure. At follow-up in 1m ∼ 1y, TTE revealed 1 patient residual shunt.
Conclusions TTE is a useful approach for the preliminary selectable of VSD in children, for decision of the procedure and enables detemination of device size, correct placement of the device, assessment of the cosure procedure and result evaluation at follow-up.