Original articleValidity of a simple sleep monitor for diagnosing OSA in bariatric surgery patients
Section snippets
Study design and population
We performed a prospective, single-center pilot study involving patients scheduled for primary or revisional bariatric surgery in the OLVG West, Amsterdam, the Netherlands. Bariatric surgery patients were included consecutively. All patients met the International Federation for the Surgery of Obesity and Metabolic Disorders criteria for bariatric surgery [11]. In the OLVG West, Amsterdam, ambulant polygraphy (PG) and, in some cases, ambulant PSG is routine preoperative care in bariatric surgery
Study population
From October 2016 to March 2017, a total of 52 of 68 patients completed the study (42 [81%] female, age 42 ± 5 yr, body mass index 42.8 ± 5.0 kg/m2). Sixteen patients returned the Checkme without any registered data. Two patients were excluded from further analysis due to a Checkme recording time<3.5 hours (possibly due to movement of the oxygen sensor). The remaining 50 patients had a mean recording time of 7.2 hours and were included for analysis. A total of 11 patients (22%) underwent
Discussion
In this study we found good agreement between the Checkme and the gold standard P(S)G as expressed by the ICC (ICC .85, 95% CI .75–.91). We demonstrated a small systematic difference between the P(S)G-AHI and the Checkme-ODI. For mean values of circa ≤15, the distribution of the Bland-Altman plot was sufficiently narrow, which means that the Checkme and the P(S)G may be essentially equivalent in these values. The limits of agreement got wider in higher values, which means that the bias between
Conclusion
The Checkme cannot replace the P(S)G but can be used as a valid screening tool to rule out moderate and severe OSA in bariatric surgery patients who present for preoperative evaluation. In our population, 42% of the patients could have been withheld an extensive sleep study, using the Checkme data.
Disclosures
N. de Vries is a member of the Medical Advisory Board of Revent Medial and NightBalance and has stock options and shares in ReVent Medical and NightBalance, respectively. He is also an investigator of Inspire, consultant of Philips, Olympus, and the AE Mann Foundation and has inventor patent on PCT/US2010/062576, including devices, systems, and methods for monitoring sleep position.
Acknowledgments
We would like to acknowledge BodiMetrics for supplying the Checkme pro for this study.
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