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Study Design: Retrospective cohort study., Objectives: The aim of this study was to identify the factors associated with extended operative time (EOT) for pediatric patients with craniosynostosis undergoing cranial vault remodeling (CVR)., Methods: A retrospective cohort study was performed using the 2012 to 2021 American College of Surgeons National Surgical Quality Improvement Program Pediatric--Pediatric database. Pediatric patients below 2 years old with craniosynostosis who underwent CVR were identified using Current Procedural Terminology and International Classification of Diseases-9/10 codes. Patients were dichotomized according to whether they encountered an EOT, which was defined as operative time greater than the 75th percentile for the entire cohort (246 min). Patient demographics, comorbidities, intraoperative variables, postoperative adverse events, and health care resource utilization were assessed. Multivariate logistic regression analysis was utilized to identify predictors of EOT and length of stay., Results: In the cohort of 9817 patients undergoing CVR, 24.3% experienced EOT. The EOT cohort was significantly older and less likely to be non-Hispanic White. Patient comorbidities and surgical adverse events were more frequent among the EOT cohort, including proportions of postoperative surgical site infections. Independent predictors for EOT included age, racial identity, weight, and a higher American Society of Anesthesiologists classification. EOT was found to be an independent predictor for prolonged hospitalization EOT [adjusted odds ratios: 0.78 (0.44-1.13), P<0.001]., Conclusions: This study demonstrates that age, race, and comorbidities contribute to EOT after CVR for craniosynostosis. EOT is independently associated with a longer length of stay. Additional investigations to further understand the risk factors and impacts of extended EOT are warranted to improve patient outcomes., Competing Interests: The authors report no conflicts of interest., (Copyright © 2023 by Mutaz B. Habal, MD.)

Objectives: The aim of this study was to identify the factors associated with extended length of stay (LOS) for pediatric patients with craniosynostosis undergoing cranial vault remodeling (CVR)., Methods: A retrospective cohort study was performed using the 2012 to 2021 American College of Surgeons National Surgical Quality Improvement Program-Pediatric database. Pediatric patients below 2 years old with craniosynostosis who underwent CVR were identified using Current Procedural Terminology and International Classification of Diseases-9/10 codes. Patients were dichotomized according to whether they encountered an extended postoperative hospital LOS, which was defined as LOS greater than the 75th percentile for the entire cohort (4 days). Patient demographics, comorbidities, intraoperative variables, postoperative adverse events, and health care resource utilization were assessed. Multivariate logistic regression analysis was utilized to identify predictors of prolonged LOS., Results: In our cohort of 9784 patients, 1312 (13.4%) experienced an extended LOS. The extended LOS cohort was significantly older than the normal LOS cohort (normal LOS: 225.1±141.8 d vs. extended LOS: 314.4±151.7 d, P<0.001) and had a smaller proportion of non-Hispanic white patients (normal LOS: 70.0% vs. extended LOS: 61.2%, P<0.001). Overall, comorbidities and adverse events were significantly higher in the extended LOS cohort than the normal LOS cohort. On multivariate logistic regression, independent associations of extended LOS included age, race and ethnicity, weight, American Society of Anesthesiologists classification, impaired cognitive status, structural pulmonary abnormalities, asthma, and neuromuscular disorders., Conclusions: This study demonstrates that age, race, comorbidities, and perioperative complications contribute to extended LOS after CVR for craniosynostosis. Further investigations to further elucidate the risk factors of extended LOS is warranted to optimize patient outcomes., Competing Interests: The authors report no conflicts of interest., (Copyright © 2023 by Mutaz B. Habal, MD.)