The Role of Thiamine After Transcatheter Closure in Children With Left-to-Right Shunt Congenital Heart Disease

Specifically the investigators want to study about : 1. The differences in serum levels of matrix metalloproteinase-9 in patients with congenital heart disease with left to right shunt lesions after transcatheter closure who received thiamine and those who did not receive thiamine. 2. The differences in serum tissue inhibitor of metalloproteinase-1 levels in patients with congenital heart disease with left to right shunt lesions after transcatheter closure who received thiamine and those who did not receive thiamine. 3. The differences in left ventricular structure in patients with congenital heart disease with left to right shunt lesions after transcatheter closure who receive thiamine and those who do not receive thiamine. 4. The differences in left ventricular function in patients with congenital heart disease with left to right shunt lesions after transcatheter closure who receive thiamine and those who do not receive thiamine.