Adverse Outcomes After Mandibular Distraction Osteogenesis in Robin Sequence

Mandibular distraction osteogenesis (MDO) is a common procedure used to correct upper airway obstruction in patients with Robin sequence. However, analysis of predictors of adverse outcomes after MDO has relied on small single-institution cohorts. This retrospective cohort study leveraged the Epic Cosmos multicenter database to evaluate predictors of morbidity and mortality in patients with Robin sequence undergoing MDO from January 2015 to December 2024. A multivariable logistic regression was used to evaluate associations between perinatal factors, airway anomalies, genetic syndromes, and congenital anomalies affecting the cardiopulmonary, gastrointestinal and central nervous system (CNS), and postoperative outcomes including 1-year mortality, tracheostomy, intensive care unit (ICU) admission within 30 days, 30-day hospital readmission, 30-day emergency department visit, ICU length of stay (LOS), and overall hospital LOS. Across a total of 685 patients, CNS anomalies were statistically significantly associated with 1-year mortality; cardiopulmonary anomalies and bronchomalacia were predictive of tracheostomy; tracheal stenosis was associated with ICU admission; CNS anomalies were associated with 30-day emergency department visit; and no variables were significantly associated with 30-day readmission. Age at surgery was inversely associated with longer ICU LOS and overall LOS, whereas prematurity, prenatal drug exposure, gastroesophageal reflux, and CNS anomalies were associated with longer overall LOS. These results highlight the burden of comorbidities of the airway, cardiopulmonary system, and central nervous system for patients with Robin sequence undergoing MDO and can inform surgeons on the likelihood of adverse events based on the diagnostic characteristics of the patient.