A Novel Predictive Value for the Transannular Patch Enlargement in Repair of Tetralogy of Fallot

The authors determined the need for transannular patch enlargement (TAPE) in management of ToF by measuring the ratio between pulmonary annulus size to aortic valve annulus size (GA ratio).  A retrospective analysis of 122 pts who had undergone ToF repair with or without TAPE was performed.  GA ratios were smaller in patients undergoing TAPE.  The GA ratio was a better predictor of TAPE (accuracy 90%) than a traditional method (z-score).