Abstract
The purpose of this review is to conduct a systematic review and meta-analysis comparing the effects of continuous positive airway pressure (CPAP) with a mandibular advancement device (MAD) in improving the quality of life (sleepiness, cognitive, and functional outcomes) in patients diagnosed with obstructive sleep apnea (OSA). Authors identified randomized, placebo-controlled studies from MEDLINE through PubMed, Web of Science, and the Cochrane Library. Studies were assessed for inclusion and exclusion criteria, as well as risk of bias. Initial search yielded 240 unduplicated references, which the authors reduced to 12 relevant studies. Patients with CPAP therapy showed no statistically significant difference in the post-treatment quality of life measured with the SF-36 mental health component (p = .994), or the SF-36 physical functioning component (p = .827). There was no significant improvement in neither Functional Outcomes of Sleep Questionnaire (p = .788) nor cognitive performance (p = .395) compared to patients treated with oral appliances. However, the meta-analyses’ overall results showed a significant improvement in the post-treatment apnea–hypopnea index (AHI) in favor of CPAP therapy as compared with the oral appliance group (p < .001). Meta-analyses showed unclear results for sleepiness with no significant differences in average post-treatment Epworth Sleepiness Scale [ESS] (p = .203), but significant differences in change in ESS from baseline favorable to CPAP treatment (p = .047). Further studies are needed. Compliance with treatment was 1.1 h per night significantly lower with CPAP than MAD (p = .004), which could explain why though efficacy (AHI) is better with CPAP, no significant results are shown for quality of life, cognitive, and functional outcomes. Though CPAP is significantly more efficient in reducing AHI (moderate quality of evidence), it has a significantly lower compliance resulting in no differences with MAD in quality of life, cognitive, or functional outcomes. Sleep medicine professionals should monitor treatment compliance and offer patients non-compliant with CPAP an oral appliance for treatment of OSA.
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Abbreviations
- CPAP:
-
continuous positive airway pressure
- MAD:
-
mandibular advancement device
- OSA:
-
obstructive sleep apnea
- RCT:
-
randomized controlled trial
- M.S.:
-
Dr. Martha Schwartz
- L.A.:
-
Dr. Luis Acosta
- Y.L.:
-
Dr. Yuan-Lung Hung
- R.E.:
-
Dr. Reyes Enciso
- AASM:
-
American Academy of Sleep Medicine
- AADSM:
-
American Academy of Dental Sleep Medicine
- QoL:
-
quality of life
- ESS:
-
Epworth Sleepiness Scale
- EDSI:
-
Excessive Daytime Sleepiness Index
- SF-36:
-
36-Item Short-Form Survey
- FOSQ:
-
Functional Outcomes of Sleep Questionnaire
- AHI:
-
Apnea–hypopnea index
- CI:
-
confidence interval
- RR:
-
risk ratio
- SDM:
-
standardized difference in means
- PSG:
-
polysomnography
- SpO2 :
-
blood oxygen saturation level
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Acknowledgements
The authors of this review would like to thank Dr. Gayle Macdonald and Dr. Margarita Zeichner-David for the help with editing and formatting of the manuscript.
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Comment
The struggle in our communities to improve airway-related disease is made easier by increasing the therapy options considered by medical providers. Practitioners kept well-informed of the merits of several potential therapies will benefit more people than those who hew to more limited choices. By providing a cogent analysis of today’s research, the authors assist those providers in medical decision-making that increases confidence in using more than the standard therapy for airway related disease. Ultimately, a more precise pattern of prescribing treatment will result in a healthier population.
Steve Carstensen
Bellevue, USA
No clinical trial, Systematic review.
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Schwartz, M., Acosta, L., Hung, YL. et al. Effects of CPAP and mandibular advancement device treatment in obstructive sleep apnea patients: a systematic review and meta-analysis. Sleep Breath 22, 555–568 (2018). https://doi.org/10.1007/s11325-017-1590-6
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DOI: https://doi.org/10.1007/s11325-017-1590-6