Diagnosing Tongue Base Obstruction in Pierre Robin Sequence Infants: Sleep vs Awake Endoscopy.

ABSTRACT

OBJECTIVE: To investigate whether awake endoscopy can diagnose base-of-tongue obstruction as reliably as sleep endoscopy in infants with Pierre Robin sequence (PRS). DESIGN: The study was retrospective with the clinicians blinded to patient identity. Endoscopy findings were assessed and measured by the performing pediatric otolaryngologist. SETTING: Tertiary care children's hospital. PATIENTS All infants with PRS managed between January 2005 and July 2015 were included. There were 141 patients, of which 35 underwent both awake endoscopy (AE) and drug-induced sleep endoscopy (DISE). INTERVENTIONS: Bedside AE and DISE in the operating room. MAIN OUTCOME MEASURES: Presence of moderate or severe base-of-tongue collapse was assessed. Sensitivity, specificity, and positive likelihood ratio of AE findings as well as intertest differences between AE and DISE were calculated. RESULTS: AE had 50.0% sensitivity (95% confidence interval [CI] 27.2%-72.8%) and 86.7% specificity (95% CI 59.5%-98.3%) for detecting base-of-tongue obstruction compared to DISE; false negative rate was 50.0% (n = 10). Positive likelihood ratio was 3.75 (CI 0.96-14.65). Compared to AE, DISE demonstrated significantly more cases of base-of-tongue obstruction ( P = .039). CONCLUSIONS: Bedside AE has low sensitivity for detecting base-of-tongue collapse in infants with PRS. Because of the substantial false negative rate, AE may not be a reliable diagnostic modality for ruling out base-of-tongue obstruction in this susceptible population. DISE may be indicated in high-risk patients to avoid underdiagnosing upper airway obstruction.