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Updated: Aug 17, 2026

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
Endoscopic findings in children with obstructive sleep apnea: effects of age and hypotonia
Shmuel Goldberg1, Anat Shatz, Elie Picard
1Department of Pediatric Pulmonology, Shaare Zedek Medical Center, Jerusalem, Israel. pedpul@szmc.org.il
Insights
Dynamic airway abnormalities are common in children with obstructive sleep apnea (OSA), especially in infants and hypotonic children. Identifying these issues before surgery improves treatment outcomes for pediatric OSA.
Area of Science:
- Pediatric Pulmonology
- Otolaryngology
- Sleep Medicine
Background:
- Obstructive sleep apnea (OSA) is a prevalent pediatric disorder linked to significant morbidity.
- OSA causes stem from fixed (e.g., adenotonsillar hypertrophy) or dynamic (e.g., laryngomalacia) upper airway issues.
Purpose of the Study:
- To ascertain the prevalence of dynamic upper airway abnormalities in children with OSA.
- To compare these findings between normotonic and hypotonic pediatric OSA patients.
Main Methods:
- Retrospective review of 39 pediatric OSA patients who underwent bronchoscopy.
- Categorization of patients into normotonic (n=22) and hypotonic (n=17) groups.
- Analysis of endoscopic findings for dynamic airway defects.
Main Results:
- Dynamic abnormalities were prevalent in normotonic children, decreasing with age (100% <1yr, 66% 1-2yrs, 17% >2yrs).
- Dynamic defects were highly prevalent in hypotonic children, irrespective of age.
- A significant portion of OSA cases involved dynamic defects, alone or combined with fixed issues.
Conclusions:
- Dynamic upper airway abnormalities are frequent in pediatric OSA, particularly in infants and hypotonic children.
- Endoscopy may be crucial for diagnosing OSA in these specific pediatric subgroups.
- Identifying dynamic defects pre-intervention can guide treatment decisions and improve surgical outcomes.
Abstract:
Obstructive sleep apnea (OSA) syndrome is a common disorder among children and is often associated with significant morbidity. The causes of OSA are related to either fixed upper airway abnormalities such as adenotonsillar hypertrophy, or dynamic airway abnormalities such as laryngomalacia and pharyngeal wall collapse. The aim of the present study was to determine the prevalence of dynamic upper airway abnormalities, based on endoscopic findings, in normotonic and hypotonic children with polysomnographically documented OSA. The records of 39 consecutive children with OSA who underwent bronchoscopy (22 with normal tone, and 17 with hypotonia) were reviewed. The prevalence of dynamic defects among children with normal tone decreased with age. All 7 patients less than 1 year old had dynamic abnormalities (isolated or combined fixed/dynamic), compared to only 66% (6/9) of patients between 1-2 years old, and 17% (1/6) of children more than 2 years old. In contrast, dynamic abnormalities were very common among hypotonic children, independent of age. Since children with dynamic defects are less likely to respond to surgical treatments, it would be appropriate to identify these children prior to any intervention. Due to the higher frequency of dynamic defects in both infants (< 1 year) and hypotonic children, it may be appropriate to include endoscopy as part of the diagnostic evaluation of OSA in these subgroups.
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