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Development of Obliterative Bronchiolitis in a Murine Model of Orthotopic Lung Transplantation
Published on: July 10, 2012
Pathophysiology of upper airway obstruction: a developmental perspective
Raanan Arens1, Carole L Marcus
1Division of Pulmonary Medicine and Sleep Disorders Center, The Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia 19104, USA.
Sleep
|September 30, 2004
Summary
Obstructive sleep apnea syndrome (OSAS) involves airway narrowing and abnormal neuromotor tone, affecting all ages. Research indicates impaired upper airway reflexes in children with OSAS may contribute to the condition.
Area of Science:
- Pediatric Pulmonology
- Sleep Medicine
- Otolaryngology
Background:
- Obstructive sleep apnea syndrome (OSAS) affects individuals across all age groups, from infants to the elderly.
- The precise pathophysiology of OSAS remains incompletely understood.
- Current research points to a combination of anatomical airway narrowing and aberrant upper airway neuromotor control as key contributors to OSAS.
Purpose of the Study:
- To explore the underlying pathophysiology of obstructive sleep apnea syndrome (OSAS).
- To investigate the roles of anatomical factors and upper airway neuromotor tone in OSAS across different age groups.
- To examine age-related differences in upper airway reflexes and their potential implications in OSAS.
Main Methods:
- Review of existing research on the anatomical and neuromuscular aspects of OSAS.
- Analysis of age-specific predisposing factors for airway narrowing.
- Comparison of upper airway reflexes and arousal responses in infants, children, and adults with and without OSAS.
Main Results:
- OSAS is characterized by both anatomical narrowing and abnormal upper airway neuromotor tone, varying across the lifespan.
- A smaller upper airway is a common feature in all age groups, predisposing to sleep-related airway collapse.
- While anatomical factors are recognized, alterations in upper airway neuromotor tone are crucial, especially given that infants and children exhibit blunted compensatory responses to airway obstruction.
Conclusions:
- OSAS pathophysiology is multifactorial, involving anatomical and neuromotor elements that differ with age.
- Abnormalities in upper airway neuromotor tone and reflexes, particularly in children, are significant contributors to OSAS.
- Further research is essential to elucidate the complex interplay of upper airway structure and function in OSAS development and progression.
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