The relationship between the technical performance score (TPS) and outcomes and its discriminative ability in congenital heart surgery.

Various scoring systems have been used to predict mortality and morbidity after congenital heart surgery. While the ideal system is still controversial, the technical performance score (TPS) has recently gained popularity. In this study, was investigated the effect of the TPS in predicting mortality and morbidity in pediatric patients who underwent congenital heart surgery in our clinic. Patients aged < 18 years who underwent congenital heart surgery between 2020 and 2023, were retrospectively analyzed. The patients' TPS categorizations were assigned according to their echocardiographic results at discharge and whether they required reintervention. The primary endpoints of the study were mortality (death within 30 days postoperatively) and morbidity. The secondary endpoint was a comparison of the effectiveness of TPS with that of the widely used Society of Thoracic Surgeons-European Association for Cardio-Thoracic Surgery score. Included in this study were 1075 patients. The median patient age was 3 months (interquartile range, 1-5 months). The mortality and morbidity rates were 11% and 24%, respectively. Of the patients, 60% were categorized as TPS I (optimal), 25% as TPS 2 (adequate, minimal residual defect), and 15% as TPS 3 (inadequate, hemodynamically significant residual defect). Being categorized as TPS 3 was associated with mortality, prolonged ICU stay, and major adverse events. The predictive power of TPS for mortality and morbidity was an area under the receiver operating characteristic curve (AUC) of 0.810 (95% CI: 0.79-0.839, P < .001) and 0.78 (95% CI: 0.76-0.80, P < .001), respectively. These values were similar to those of the Society of Thoracic Surgeons-European Association for Cardio-Thoracic Surgery score (0.81 vs 0.83 and 0.78 vs 0.80 for mortality and morbidity, respectively). In patients with highly heterogeneous congenital heart disease, the use of intraoperative TPS may be helpful in predicting mortality and morbidity.