Evaluating Obstructive Sleep Apnea Utilizing Arterial Tonometry in Individuals with Cystic Fibrosis

Area of Science:

• Pulmonary Medicine
• Sleep Medicine
• Genetics

Background:

• Poor sleep quality and daytime sleepiness are prevalent in cystic fibrosis (CF).
• The impact of sleep-disordered breathing (SDB), specifically obstructive sleep apnea (OSA), in CF remains understudied.
• Lack of clinical guidelines for identifying CF patients at risk for sleep disorders.

Purpose of the Study:

• To investigate the prevalence of OSA in adults with CF.
• To explore potential clinical predictors and associations of OSA in the CF population.
• To evaluate the utility of current sleep screening tools in CF patients.

Main Methods:

• A single-center study involving 19 adult participants with CF.
• Home sleep apnea testing using a peripheral arterial tonometry (PAT) device.
• Analysis of associations between OSA and FEV, Mallampati score, nocturnal symptoms, and standard sleep questionnaires.

Main Results:

• An increased prevalence of OSA was observed in the CF cohort compared to general population estimates.
• No statistically significant associations were found between OSA and FEV < 70%, modified Mallampati score ≥ 3, nocturnal cough, or snoring.
• Standard sleep questionnaires did not correlate with OSA diagnosis in this CF sample.

Conclusions:

• Adults with CF exhibit a higher prevalence of OSA.
• Current clinical indicators and validated sleep questionnaires may not be sufficient for OSA screening in CF.
• Development of CF-specific screening tools for sleep disorders is warranted.