scholarly journals EVALUATION OF UPPER AIRWAY (UA) ANTHROPOMETRY USING MAGNETIC RESONANCE IMAGING (MRI) AND LATERAL CEPHALOMETRY IN PATIENTS OF OBSTRUCTIVE SLEEP APNEA (OSA) IN NORTH INDIAN POPULATION.

Respirology ◽  
2018 ◽  
Vol 23 ◽  
pp. 87-87
Keyword(s):  
Magnetic Resonance Imaging ◽  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Indian Population ◽  
Upper Airway ◽  
North Indian Population ◽  
Resonance Imaging ◽  
Obstructive Sleep ◽  
Magnetic Resonance Imaging Mri ◽  
Lateral Cephalometry

scholarly journals Respiratory-related displacement of the trachea in obstructive sleep apnea

2019 ◽  
Vol 127 (5) ◽  
pp. 1307-1316
Author(s):  
Joshua Tong ◽  
Lauriane Jugé ◽  
Peter GR Burke ◽  
Fiona Knapman ◽  
Danny J Eckert ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Upper Airway ◽  
Dynamic Magnetic Resonance Imaging ◽  
Resonance Imaging ◽  
Quiet Breathing ◽  
Airway Patency ◽  
Peak Displacement ◽  
Obstructive Sleep

Tracheal displacement is thought to be the primary mechanism by which changes in lung volume influence upper airway patency. Caudal tracheal displacement during inspiration may help preserve the integrity of the upper airway in response to increasing negative airway pressure by stretching and stiffening pharyngeal tissues. However, tracheal displacement has not been previously quantified in obstructive sleep apnea (OSA). Accordingly, we aimed to measure tracheal displacements in awake individuals with and without OSA. The upper head and neck of 34 participants [apnea-hypopnea index (AHI) = 2–74 events/h] were imaged in the midsagittal plane using dynamic magnetic resonance imaging (MRI) during supine awake quiet breathing. MRI data were analyzed to identify peak tracheal displacement and its timing relative to inspiration. Epiglottic pressure was measured separately for a subset of participants ( n = 30) during similar experimental conditions. Nadir epiglottic pressure and its timing relative to inspiration were quantified. Peak tracheal displacement ranged from 1.0–9.6 mm, with a median (25th–75th percentile) of 2.3 (1.7–3.5) mm, and occurred at 89 (78–99)% of inspiratory time. Peak tracheal displacement increased with increasing OSA severity (AHI) ( R2 = 0.28, P = 0.013) and increasing negative nadir epiglottic pressure ( R2 = 0.47, P = 0.023). Relative inspiratory timing of peak tracheal displacement also correlated with OSA severity, with peak displacement occurring earlier in inspiration with increasing AHI ( R2 = 0.36, P = 0.002). Tracheal displacements during quiet breathing are larger in individuals with more severe OSA and tend to reach peak displacement earlier in the inspiratory cycle. Increased tracheal displacement may contribute to maintenance of upper airway patency during wakefulness in OSA, particularly in those with severe disease. NEW & NOTEWORTHY Tracheal displacement is thought to play an important role in stabilizing the upper airway by stretching/stiffening the pharyngeal musculature. Using dynamic magnetic resonance imaging, this study shows that caudal tracheal displacement is more pronounced during inspiration in obstructive sleep apnea (OSA) compared with healthy individuals. Softer pharyngeal muscles and greater inspiratory forces in OSA may underpin greater tracheal excursion. These findings suggest that tracheal displacement may contribute to maintenance of pharyngeal patency during wakefulness in OSA.

scholarly journals Magnetic resonance imaging of the upper airway in patients with quadriplegia and obstructive sleep apnea

2017 ◽  
Vol 27 (4) ◽  
pp. e12616 ◽  
Author(s):  
Fergal J. O'donoghue ◽  
Hailey Meaklim ◽  
Lynne Bilston ◽  
Alice Hatt ◽  
Alan Connelly ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Magnetic Resonance ◽  
Upper Airway ◽  
Resonance Imaging ◽  
Obstructive Sleep

Magnetic Resonance Imaging of the Upper Airway Structure of Children with Obstructive Sleep Apnea Syndrome

2001 ◽  
Vol 164 (4) ◽  
pp. 698-703 ◽  
Author(s):  
RAANAN ARENS ◽  
JOSEPH M. McDONOUGH ◽  
ANDREW T. COSTARINO ◽  
SOROOSH MAHBOUBI ◽  
CATHERINE E. TAYAG-KIER ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Magnetic Resonance ◽  
Sleep Apnea Syndrome ◽  
Upper Airway ◽  
Resonance Imaging ◽  
Obstructive Sleep ◽  
Apnea Syndrome ◽  
Upper Airway Structure
Sign in / Sign up

Export Citation Format

Share Document