Supine Pharyngeal Width Is Associated With Complete Concentric Palatal Collapse During Drug-Induced Sleep Endoscopy and Hypoglossal Nerve Stimulator Outcomes

Jordan S Weiner; Christopher C Munhall; David T Kent

doi:10.1177/01455613221148313

Supine Pharyngeal Width Is Associated With Complete Concentric Palatal Collapse During Drug-Induced Sleep Endoscopy and Hypoglossal Nerve Stimulator Outcomes

Ear Nose Throat J. 2022 Dec 29:1455613221148313. doi: 10.1177/01455613221148313. Online ahead of print.

Authors

Jordan S Weiner¹, Christopher C Munhall², David T Kent³

Affiliations

¹ Valley ENT, Scottsdale, AZ, USA.
² University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA.
³ Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, TN, USA.

PMID: 36583238
DOI: 10.1177/01455613221148313

Abstract

Objective: Hypoglossal nerve stimulation (HNS) implantation in the US requires preoperative drug-induced sleep endoscopy (DISE) screening for complete concentric palatal collapse (CCC) to establish treatment candidacy. We hypothesized that supine pharyngeal width (SPW) in awake patients is associated with CCC and HNS therapy outcomes.

Methods: Adults with moderate to severe obstructive sleep apnea underwent awake measurement of SPW followed by DISE screening for CCC. Eligible patients electing for HNS implantation underwent postoperative polysomnography per standard of care.

Results: SPW was measured in 73 patients. For SPW >20 mm, the positive likelihood ratio for absence of CCC was 6.67 with pre- and post-test odds of 6.3 and 42.0, respectively. Postoperative PSG data were available from 31 of 44 (70.5%) patients subsequently implanted with HNS. Patients with SPW >20 mm had a greater rate of HNS response than those with SPW ≤20 (62 vs 30%; P < .05). Only SPW and BMI were significantly associated with CCC and HNS response in regression models.

Conclusion: In a retrospective cohort study, SPW was significantly associated with CCC and postoperative apnea-hypopnea index following HNS implantation. SPW may be a viable screening tool for HNS candidacy.

Keywords: complete concentric palatal collapse; drug-induced sleep endoscopy; hypoglossal nerve stimulation; obstructive sleep apnea; supine pharyngeal width.