Abstract
Objective
To establish the prevalence of positional (PP) OSA patients using
self-administered home-based respiratory polygraphy (RP).
Materials and Methods
52 month retrospective study based on RP records.
Results
200 PR records: 70.5% men 29.5% women. 76% were diagnosed with OSA and 54.6%
with PP OSA. There were no significant differences in Epworth Sleepiness
Scale, apnea hypopnea index and oxygen desaturation index. PP OSA patients
were younger, had a lower BMI (30.3±0.9 vs. 35.3±1.2)
(p<0.0001), and the time they spent with oxygen
saturation <90% (T<90) was lower (8.8 vs. 28.7±6.7,
p=0.0038). The PP OSA group spent 43% of total
recording time in the supine position.
Conclusions
The prevalence of PP OSA patients studied with RP is similar to the one
described by sleep laboratories. They have lower BMI, present mostly mild
OSA with less desaturation, and are less likely to receive CPAP therapy.
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