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Breathing abnormalities in sleep in achondroplasia
K A Waters1, F Everett, D Sillence
1Royal Prince Alfred Hospital Sleep Unit, Camperdown, Australia.
Archives of Disease in Childhood
|August 1, 1993
Summary
This study reveals that children with achondroplasia frequently experience sleep-related breathing issues and abnormal somatosensory evoked potentials (SEPs). However, these respiratory problems do not always correlate with SEP abnormalities.
Area of Science:
- Pediatric Pulmonology
- Neurology
- Genetics
Background:
- Achondroplasia is a genetic disorder characterized by disproportionate dwarfism.
- Respiratory abnormalities and potential brainstem dysfunction are concerns in achondroplasia.
- Sleep studies are crucial for evaluating respiratory health during sleep.
Purpose of the Study:
- To investigate the prevalence of sleep-related respiratory abnormalities in individuals with achondroplasia.
- To assess for brainstem abnormalities using somatosensory evoked potentials (SEPs) in this population.
- To explore the relationship between respiratory issues and SEPs in achondroplasia.
Main Methods:
- Overnight polysomnography was conducted on 20 subjects with achondroplasia.
- Somatosensory evoked potentials (SEPs) were recorded in 19 subjects to evaluate brainstem function.
- Participants included children (1-14 years) and young adults (20-31 years).
Main Results:
- All subjects exhibited upper airway obstruction.
- A high prevalence of pathological sleep apnea (75%) was observed.
- Abnormal SEPs were found in 42% of subjects, with no clear correlation to sleep apnea severity.
Conclusions:
- Young individuals with achondroplasia demonstrate a high incidence of sleep-related respiratory problems.
- Abnormal SEPs are also common in this group, but not consistently linked to sleep apnea.
- Sleep-disordered breathing in achondroplasia may not always lead to significant blood gas disturbances or correlate with neurological findings.