Corrective

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Transposition of the great vessels Microchapters

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Dextro-transposition of the great arteries
L-transposition of the great arteries

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Associate Editors-In-Chief: Keri Shafer, M.D. [2]; Atif Mohammad, M.D., Priyamvada Singh, MBBS


Corrective

Arterial switch

Immediate post-operative (Jatene procedure) d-TGA + VSD neonate. Immediate post-operative (Jatene procedure) d-TGA + VSD neonate.


The Jatene procedure surgery is the preferred, and most frequently used, method of correcting d-TGA; ideally, it is performed on an infant between 8-14 days old.


The heart and vessels are accessed via median sternotomy, and a cardiopulmonary bypass machine is used; as this machine needs its "circulation" to be filled with blood, a child will require a blood transfusion for this surgery. The procedure involves transecting both the aorta and pulmonary artery; the coronary arteries are then detached from the aorta and reattached to the neo-aorta, before "swapping" the upper portion of the aorta and pulmonary artery to the opposite arterial root. Including the anaesthesia and immediate post operative recovery, this surgery takes an average of approximately six to eight hours to complete.


Some arterial switch recipients may present with post-operative pulmonary stenosis, which would then be repaired with angioplasty, pulmonary stenting via heart cath or median sternotomy, and/or xenograft. One day post-operative (Jatene procedure) d-TGA + VSD neonate. One day post-operative (Jatene procedure) d-TGA + VSD neonate. [edit] Atrial switch


In some cases, it is not possible to perform an arterial switch, either because of late diagnosis, sepsis, or a contraindicative coronary artery pattern. In the case of sepsis or late diagnosis, a delayed Arterial Switch can sometimes be made possible by PAB, which may also require a concomitant construction of an aortic-to-pulmonary artery shunt.

When an arterial switch is impossible, an atrial switch will be attempted using either the Senning or Mustard procedure. Both methods involve creating a baffle to redirect red and blue blood flow to the appropriate artery. Since the late 1970s the Mustard procedure has been preferred.

References

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