Abstract：Objective: Summarize the experience of echocardiographic diagnosis on 12 patients with C-TGA underwent double switch procedure. Materials and Methods: Twelve C-TGA patients, 11 were attributed to SLL type, one was IDD type. Surgical procedure included that atrial switch was performed in 1 patients. Modified sinning procedure was performed in 11 patients, which involved opening of left atrium, atrial septum, connecting both superior vena cava and inferior vena cava into pathological right ventricle and tricuspid valve, meanwhile connecting pulmonary veins and pathological left ventricle and bicuspid with pericardium respectively. There were 10 patients with VSD and PS surgically performed by establishing a tunnel between VSD and aorta by Dacro Vessel and by putting extra-conduit between pathological right ventricle and pulmonary artery. Last two cases with normal pulmonary valve were corrected by patching VSD and switching between aorta and pulmonary artery. Instrument routinely used in the study is Toshiba 6000 and Philips IE33 with probe frequency ranging from 2.5 to 3.75MHz. Results: All patients were correctly diagnosed as C-TGA by TTE. Echocardiography and angiocardiography all were consistent with surgical finding. Of the 12 patients corrected by double switch, 9 patients survived and others died. During follow-up with TTE, all of the 9 patients were in normal right and left ventricular function, conduits from right to pulmonary were in normal state, except 1 patient had a residue VSD. Conclusions: Echocardiography plays an important role in diagnosing C-TGA with heart malformation and also helps to confirm indication for double switch, and TTE has clinical significance in following up of surgical procedure as well.
2007, Vol. 18 
