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Improved olfaction under continuous positive airway pressure therapy

Significant improvement of olfactory performance in sleep apnea patients after three months of nasal continuous positive airway pressure therapy

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ISRCTN
Registry ID
ISRCTN11128866
Enrollment
30
Registered
2016-10-12
Start date
2014-11-19
Completion date
Unknown
Last updated
2023-11-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Olfactory performance in moderate and severe sleep apnea patients Signs and Symptoms

Interventions

Part 1: Participants attend a study visit at which they undergo several investigations. Firstly, a questionnaire concerning sleepiness and self-estimated quality of the own olfaction h

Sponsors

Cantonal Hospital Aarau
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Outpatients of our department of pulmonary and sleep medicine 2. Age 18 years and over 3. Suffer from daytime sleepiness 4. Show moderate to severe OSA (apnea hypopnea index (AHI) = 15 per hour) in a respiratory sleep study

Exclusion criteria

Exclusion criteria: 1. Lack of written informed consent 2. Insufficient knowledge of the German language 3. Known disease of the nasal cavity or sinuses, or topical nasal therapy usage

Design outcomes

Primary

MeasureTime frame
Part 1: Self-estimated olfaction is measured using a visual analogue scale (VAS) at baseline and 3 months. Part 2: Self-estimated olfaction is measured using a visual analogue scale (VAS) at baseline and 3 weeks.

Secondary

MeasureTime frame
Part 1: 1. Odor threshold, odor discrimination, odor identification and the summarized value of these three tests threshold, discrimination and identification overall score (TDI) are measured with the aid of a standardized test battery (sniffin’sticks) at baseline and 3 months 2. Daytime sleepiness is measured using the Epworth sleepiness scale (ESS) at baseline and 3 months Part 2: 1. Odor threshold, odor discrimination, odor identification and the summarized value of these three tests threshold, discrimination and identification overall score (TDI) are measured with the aid of a standardized test battery (sniffin’sticks) at baseline and 3 weeks 2. Daytime sleepiness is measured using the Epworth sleepiness scale (ESS) at baseline and 3 weeks

Countries

Switzerland

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 27, 2026