PMID: 26349277Sep 10, 2015Paper

Postural and Conditional Variations of Nasal Patency in Patients under General Anesthesia Approximating Sleep as Assessed with Acoustic Rhinometry

Nihon Jibiinkoka Gakkai kaiho
Masami NakajimaRyuuichirou Araki

Abstract

Nasal obstruction is a known risk factor associated with obstructive sleep apnea (OSA). Multiple methods of measuring nasal abnormalities including anterior and posterior rhinomanometry and acoustic rhinometry (AR) have been used to better quantify the relationship. These measurements are usually used in the sitting and awakening situation, which differ from the situations in the supine position and while asleep. The goal of this study was to evaluate the nasal patency in patients under general anesthesia approximating sleep as assessed with AR. The nasal minimal cross-sectional area (MCSA) and nasal volume in 50 patients who underwent general anesthesia were compared with subjects in the sitting, supine, and supine position under general anesthesia using AR to measure the nasal dimensions and patency. MCSA and nasal volume decreased more significantly in the supine than in the sitting subjects and these decrements were shown more in the supine position under general anesthesia than in the supine position without anesthesia. Furthermore, regarding nasal volume, the difference between in the sitting and in the supine was larger than the difference between in the supine position with and without general anesthesia. These results ...Continue Reading

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Citations

Mar 10, 2017·Expert Review of Anti-infective Therapy·Mahboobeh MahdaviniaAli Keshavarzian
May 11, 2021·Ear, Nose, & Throat Journal·Geng-He ChangYao-Te Tsai

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