OUTCOMES OF ESS-MEASURED SLEEPINESS IN
TWO BMI PATIENT POPULATION TREATED WITH
ORAL APPLIANCE

Ricardo C. Barbosa*, Flavio Aloe†, Stella M. Tavares
*Psychiatry Institute, LIM23, Universidade de São Paulo General Hospital - São Paulo-SP-Brazil;

†Sleep-Wake Disorders Center, Universidade de São Paulo General Hospital, São Paulo-SP-Brazil;

§ Sleep-Wake Disorders Center - Hospital Israelita Albert Einstein, São Paulo-SP-Brazil.

Introduction:
The use of removable intraoral appliances is a treatment alternative for OSAHS. The authors report the evaluation of daytime sleepiness measure by Epworth Sleepiness Scale (ESS) in 330 OSAHS subjects treated with Mandibular- Lingual Repositioning Device - MLRD in two distinct BMI patient populations.

Methods:
330 patients (256M/74F), age: avg=46 (28- 65/sd=8.18), RDI: avg=38.98 (10.2-103.1/sd=22.43), SatO2min.: avg=80.22% (49%-98%/sd=11.23). Two BMI groups were created. Group 1 (n=68): BMI=20.13 to 25.00 (avg=23.46), normal group. Group 2 (n=262): BMI=25.02 to 43.25 (avg=29.45). ESS was applied before and two months after treatment.

Results:
See Table 1

Conclusion:
The mean ESS scores for all 330 patients from groups I and II before and 60 days after MLRD-treatment was statiscally significant. The reduction of the ESS scores suggests a RDI-induced reduction in the number of arousals during sleep. However, both BMI patient populations displayed an equally significant ESS reduction despite different BMI. The reduction of the ESS scores induced by the MLRD arousal reduction. The subjective daytime sleepiness improvement induced by the oral appliance (MLRD) is generated by a probable reduction in the RDI independently of the BMI.

References:
(1) Johns MW. A New Method for Measuring Daytime Seleepiness: The Epworth Sleepiness Scale Sleep 1991, 14:540-5.
(2) Barbosa RC, Aloe F, Tavares SM, Silva AB. Evaluation of daytime sleepiness in 115 subjects treated with Mandibular Lingual Repositioning Device - MLRD. Sleep Res 1996; v.25, p. 191.