Few comments regarding transcatheter closure of congenital perimembranous and muscular ventricular septal defects.

According to our previous observation application of Muscular Amplatzer Ventricular Septal Occluder (MVSDO) in the closure of perimembranous Ventricular Septal Defect (VSD) can produce less rhythm disturbances than use of asymmetric VSD device (due to longer waist of MVSDO?). Application of MVSDO in adult patients with muscular VSD should be done with precaution in the case of thicker interventricular septum because of the risk of subsequent embolization.