Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

STUDY OBJECTIVES: To assess the benefit of NCPAP in OSA and its relation to the degree of use of NCPAP. DESIGN: Randomised parallel controlled one month study comparing NCPAP set at therapeutic levels of pressure, with NCPAP set at sub-therapeutic pressure levels. SETTING: Teaching hospital sleep clinic and laboratory SUBJECTS: 101 men referred for investigation of possible OSA who were sleepy (Epworth Sleepiness Score > or = 10) and had > or = 10/hr of >4% dips in SaO2 due to OSA. OUTCOME MEASURES: Baseline and one month measures of Epworth Sleepiness Score (ESS), Maintenance of Wakefulness Test (MWT), and the Energy/Vitality dimension of the SF-36 (health status questionnaire). Correlation of these outcome measures with NCPAP usage. RESULTS: All outcome measures improved significantly more in the therapeutic, compared to the sub-therapeutic, group (e.g. ESS 15.0 to 13.0 on sub-therapeutic, and 15.5 to 7.0 on therapeutic, p<1x10(-6)). The degree of improvement correlated significantly with NCPAP usage in the therapeutic group (ESS, r=-0.60; MWT, r=0.55) but insignificantly in the sub-therapeutic group (ESS, r=-0.15; MWT, r=-0.06). Sub-therapeutic NCPAP did not improve OSA severity and acted as a control. CONCLUSIONS: NCPAP is clearly effective in relieving the sleepiness of OSA compared to a control group identical in every way, except for receiving a nasal pressure inadequate to control the OSA.

Type

Journal article

Journal

Sleep

Publication Date

06/2000

Volume

23 Suppl 4

Pages

S150 - S153

Addresses

University of Oxford and Osler Chest Unit, Churchill Hospital, UK. j.strad@immsvr.jr2.ox.ac.uk

Keywords

Humans, Sleep Apnea, Obstructive, Positive-Pressure Respiration, Severity of Illness Index, Questionnaires, Patient Compliance, Wakefulness, Health Status, Adult, Male