Obesity, Obstructive Sleep Apnea, Smoking
Conditions
Keywords
All patients registered for A PSG, polysomnography
Brief summary
In this study the investigators will analyze the influence of smoking, benzodizepine use, and obesity among patients with severe Obstructive Sleep Apnea (sOSA).
Detailed description
This study is a retrospective study. Patients enrolled: all patients with a PSG (polysomnography) between 1st January 2014 and 30th June 2015. First analysis: influence of smoking, benzodiazepine use, and obesity on the AHI (Apnea Hypopnea Index: the number of apnea and hypopnea per hour of sleep). Second analysis: only among patients with sOSA: influence of smoking, benzodiazepine use, and obesity on sleep fragmentation and night oximetry.
Interventions
OTHERSmoking
Influence of smoking on parameters derived from overnight PSG
OTHERObesity
Influence of obesity on parameters derived from overnight PSG
OTHERBenzodiazepine use
Influence of benzodiazepine use on parameters derived from overnight PSG
Sponsors
Astes
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Healthy volunteers
No
Inclusion criteria
* All patients registered for an overnight PSG at Clinique Saint-Luc of Bouge
Exclusion criteria
* None
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Apnea Hypopnea Index | 1 day | Apnea Hypopnea Index (AHI) is defined as the number of apnea and hypopnea per hour of sleep. It is the major determinant of the severity of OSA. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Sleep fragmentation defined by the percentage of time spent in each of the four stades of sleep (Stade 1, Stade 2, Slow wave sleep and Rapid Eye Movements) | 1 day | Are smoking and/or obesity a risk factor for sleep fragmentation? |
| Time spent under 90% of SpO2 during the night | 1 day | Are smoking and/or obesity a risk factor for oxygen desaturation (\< 90% SpO2) during the night? |
Outcome results
None listed