Hi, Grandson diagnosed with moderate muscular VSD at one day. Feeding and growth went well until 2 months. Now on lasix and growth has slowed. Hole has not appeared to close. A diagnostic catherization is planned at around 3 1/2 months. Just wondering why this would be necessary. They are assuming surgery will be needed at 6-9 months.
Also, with this type of VSD would we need to be concerned about possible q22 deletion?
Muscular ventricular septal defects are common and are not the type that are associated with chromosome 22q11 microdeletion in most cases. However if there is an associated right aortic arch or other aortic arch difference, then that is associated with DiGeorge in some cases. A cardiac cath would be planned primarily to decide whether a VSD shunt was significant enough to close surgically, based on the amount of blood flow going through the hole and the pressure and resistance in the lungs. In other words, if the child's growth pattern is not consistent with what they would expect to see based on the echocardiographic findings, then the cardiac catheterization is the gold standard for decision making about surgery.
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