Value of pulmonary annulus index in predicting transannular patch in
tetralogy of Fallot repair
Abstract
Objective: It is very important to accurately assess the transannular
patch (TAP) in the surgical treatment of tetralogy of Fallot(TOF).
Methods: 130 patients who were diagnosed with TOF and underwent TOF
repair. 112 cases were included in this study. They were divided into
TAP group and no TAP group; the values of pulmonary annulus and aortic
annulus were measured. GA ratio, PAI, PAAI, the pulmonary annulus
Z-score and main pulmonary artery (MPA) Z-score were calculated to do
statistically analyze. Results: A total of 112 patients were included in
the study.62 cases (55.8%) did not transannular patch, 50 cases
(44.2%) undergoing transannular patch. The pulmonary annulus Z-score,
main pulmonary artery Z-score and PAI in TAP group were smaller than
those in no TAP group (P < 0.05). ROC analysis showed that
when the cutoff value of pulmonary annulus at -1.98 ,the area under
curve (AUC) was 0.88, the sensitivity was 80%, the specificity was
71%; when the cut-off value of PAI at 0.53 ,AUC was 0.85, the
sensitivity was 75%, the specificity was 80%; when the cutoff value of
GA ratio at 0.55 ,AUC was 0.85, the sensitivity was 76%, and the
specificity was 80%. The area under the PAAI curve (AUC) was 0.85, the
sensitivity was 76%, and the specificity was 79%. Conclusion: The
predictive effect of pulmonary annulus index as a simple and effective
predictor of TAP in TOF radical operation is the same as that of
pulmonary annulus Z-score.