Affiliation:
1. Department of Otolaryngology—Head and Neck Surgery University of Texas Southwestern Medical Center Dallas Texas 75390 U.S.A.
2. Department of Pediatric Otolaryngology Children's Health Dallas Texas 75207 U.S.A.
Abstract
ObjectivesTo determine the incidence of subglottic stenosis (SGS) in children after tracheostomy and identify risk factors for development.Study DesignRetrospective cohort.MethodsAll patients (<18 years) undergoing tracheostomy at a tertiary children's hospital between 2015 and 2020 were included. Patients with a direct laryngoscopy (DL) concurrent with tracheostomy and a subsequent DL were included. Medical records, including operative reports, were reviewed to identify subglottic stenosis and associated risk factors.ResultsA total of 140 patients were included with mean age at tracheostomy of 2.4 years (standard deviation [SD]: 4.3) (median: 0.5 years, interquartile range [IQR]: 0.3–1.5 years) and gestational age of 33.8 weeks (SD: 5.9) (median: 36 weeks, IQR: 28–39 weeks). At initial DL, 24% (N = 34) had subglottic injury and 26% (N = 37) developed SGS. The incidence of SGS after tracheostomy was 11.5 cases per 100 patients per year. At tracheostomy, lower birth weight (1.8 vs. 2.3 kg, p = 0.005), shorter gestational age (31.8 vs. 34.6 weeks, p = 0.01), younger age (0.8 vs. 2.9 years, p = 0.01), lower weight (5.8 vs. 14.7 kg, p = 0.01), and subglottic injury (44% vs. 21%, p = 0.01) were associated with the development of SGS. Multivariable logistic regression analysis associated birth weight (odds ratio [OR]: 0.49, 95% confidence interval [CI]: 0.31–0.75, p = 0.001) and early subglottic injury (OR: 3.22, 95% CI: 1.31–7.88, p = 0.01) with SGS development.ConclusionsThe incidence of SGS after pediatric tracheostomy is estimated at 11.5 cases per 100 patients per year. Low birth weight and subglottic injury at the time of tracheostomy were associated with SGS in this vulnerable population of children.Level of Evidence3 Laryngoscope, 2024