Predictors of posterior glottic stenosis: A multi-institutional case-control study

Alexander T. Hillel, Selmin Karatayli-Ozgursoy, Idris Samad, Simon R.A. Best, Vinciya Pandian, Laureano Giraldez, Jennifer Gross, Christopher Wootten, Alexander Gelbard, Lee M. Akst, Michael M. Johns

Research output: Contribution to journalArticlepeer-review


Objective: To assess intrinsic and extrinsic risk factors in the development of posterior glottic stenosis (PGS) in intubated patients. Methods: Patients diagnosed with PGS between September 2012 and May 2014 at 3 tertiary care university hospitals were included. Patient demographics, comorbidities, duration of intubation, endotracheal tube (ETT) size, and indication for intubation were recorded. Patients with PGS were compared to control patients represented by patients intubated in intensive care units (ICU). Results: Thirty-six PGS patients were identified. After exclusion, 28 PGS patients (14 male, 14 female) and 112 (65 male, 47 female) controls were studied. Multivariate analysis demonstrated ischemia (P < .05), diabetes (P < .01), and length of intubation (P < .01) were significant risk factors for the development of PGS. Fourteen of 14 (100%) males were intubated with a size 8 or larger ETT compared to 47 of 65 (72.3%) male controls (P < .05). Posterior glottic stenosis (P < .01), length of intubation (P < .001), and obstructive sleep apnea (P < .05) were significant risk factors for tracheostomy. Conclusion: Duration of intubation, ischemia, diabetes mellitus, and large ETT size (8 or greater) in males were significant risk factors for the development of PGS. Reducing the use of size 8 ETTs and earlier planned tracheostomy in high-risk patients may reduce the incidence of PGS and improve ICU safety.

Original languageEnglish (US)
Pages (from-to)257-263
Number of pages7
JournalAnnals of Otology, Rhinology and Laryngology
Issue number3
StatePublished - Mar 2016


  • Fibrosis
  • Hospital safety
  • Intubation
  • Laryngotracheal stenosis
  • Tracheostomy

ASJC Scopus subject areas

  • Otorhinolaryngology


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