Abstract
Purpose
To evaluate the effect of a sleep position trainer (SPT) in patients with positional central sleep apnea (PCSA).
Methods
A multicentre cohort study was conducted. Patients with symptomatic PCSA were included. Effectiveness, compliance and quality of life were assessed at 1- and 6-month follow-up.
Results
Sixteen patients were included. Median AHI dropped from 23.4/h [12.9–31.2] to 11.5/h [7.2–24.5] (p = 0.044) after 1-month SPT therapy and in patients who continued treatment, median AHI further decreased after 6 months to 9.7/h [3.4–27.6] (p = 0.075). Median percentage of supine sleep decreased significantly from 37.6 [17.2–51.8] to 6.7 [0.7–22.8] (p < 0.001), after 1 month, and to 6.8 [0.7–22.1] (p = 0.001), after 6 months. Mean compliance over 1 and 6 months was 78.6 ± 35.3 and 66.0 ± 33.3%, respectively. Epworth Sleepiness Scale at baseline was 9.5 [3.3–11.8] and did not significantly decrease after 1 month (11.0 [3.0–13.0]) and 6 months (4.0 [3.0–10.5]) follow-up. Functional Outcomes of Sleep Questionnaire remained stable within the first month. However, after 6 months, there was a significant improvement compared to baseline values, 15.9 [11.9–18.4] vs. 17.8 [14.3–19.2]; p = 0.030.
Conclusion
This is the first study on effects of positional therapy with a new-generation smart device in patients with PCSA after 1 and 6Â months of follow-up. Results of this study show that the SPT is effective in reducing AHI and central AI, feasible in PCSA, and is associated with symptomatic improvement. While the working mechanism behind this effect remains speculative, the effect is positive and considerable.
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NightBalance provided the 16 SPT devices.
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Prof. Dr. N. de Vries is a member of the Medical Advisory Board of NightBalance. He is also an investigator of Inspire and Jazz Pharmaceutics, consultant of Philips, Olympus and the AE Mann Foundation. Prof. Dr. J. Verbraecken is a member of the Medical Advisory Boards of ResMed Narval and Bioprojet. He is also a consultant of Philips and Jazz Pharmaceutics, and an investigator of ResMed. All the other authors declare that they have no conflicts of interest or financial ties to disclose. Dr. L.B.L. Benoist, Dr. P.E. Vonk, and Dr. H.C.J.P. Janssen declare that they have no conflict of interest.
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All the procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Benoist, L.B.L., Vonk, P.E., de Vries, N. et al. New-generation positional therapy in patients with positional central sleep apnea. Eur Arch Otorhinolaryngol 276, 2611–2619 (2019). https://doi.org/10.1007/s00405-019-05545-y
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DOI: https://doi.org/10.1007/s00405-019-05545-y