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Ann Thorac Surg 2000;69:1887-1892
© 2000 The Society of Thoracic Surgeons

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Original articles: Cardiovascular

Modified arterial switch operation by spiral reconstruction of the great arteries in transposition

^a Departments of Surgery and Pediatrics, National Taiwan University Hospital, Taipei, Taiwan

Address reprint requests to Dr Chiu, Department of Surgery, National Taiwan University Hospital, No. 7 Chung-Shan S. Rd, Taipei 100, Taiwan
e-mail: ingsh{at}ha.mc.ntu.edu.tw

Background. Spiral relationship of the normally related great arteries (SRGA) has never been reconstructed in an arterial switch operation.

Methods. From March 1998 to April 1999, 9 consecutive cases of transposition of the great arteries (TGA) family (from 2 days to 1.6 years old) underwent arterial switch operations with SRGA at our hospital. Two had a congenitally corrected TGA (plus atrial redirection). Lecompte maneuver was not used in all. The posterior wall of pulmonary trunk was not divided but three were reattached, two of whom had had previous pulmonary trunk banding. Thus the wall was shared between the great arteries facing each other.

Results. All survived the operation. Supraaortic stenosis was balloon-dilated in 2 cases of early series, but technical modifications later were able to avoid it. Angiogram showed smooth flow into SRGA without upward and anterior tilting of the pulmonary bifurcation. All great and coronary arteries were patent. All were doing well on follow-up (16.5 ± 4.2 months).

Conclusions. We concluded that the techniques to relocate the coronary arteries using common wall and in situ switch could also be applied to pulmonary arterial reconstruction, so that SRGA can be resumed in TGA.

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