Half-Turned Truncal Switch Operation for Transposition of The Great Arteries with Left Ventricular Outflow Obstruction.

To address various problems with conventional surgical procedures for transposition of the great arteries with left ventricular outflow obstruction, the aortic translocation procedure has been reconsidered as an alternative surgical procedure. We developed another innovative translocation technique, the half-turned truncal switch operation, to make use of various anatomical characteristics. The truncal block involving both semilunar valves is harvested en bloc and anastomosed to the opposite ventricular outflow tract after a half-turn. Temporarily detached coronary arteries are re-anastomosed to the reversed aortic wall defects. The key advantage of this half-turned truncal switch operation is the creation of hemodynamically faultless right and left ventricular outflow tracts including competent valve functions and a coronary circulation ensured by the posteriorly translocated aortic valve, the maximally used autologous pulmonary valve, and anastomosis of the coronary arteries to the confronting aortic wall defects. [ABSTRACT FROM AUTHOR]