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Study identifier: NCT06711159 Synced from ClinicalTrials.gov · July 28, 2026
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SLEEPINESS - a Search for a Biomarker of Excessive Daytime Sleepiness in Severe Obstructive Sleep Apnoea - An Explorative Study

Condition: Obstructive Sleep Apnea (OSA) · Excessive Daytime Sleepiness  ·  Sponsor: Zealand University Hospital

PhaseN/A
Planned participants15
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

Study aim: This study aims to use a new brainwave monitoring device that meassure brainwaves 24 hours a day to create better understanding of sleep-wake interplay as a biomarker for excessive daytime sleepiness because of obstructive sleep apnea. Study Method, Design, and Procedures Patients with sleep apnea referred to the Sleep Clinic at the Department of Ear, Nose, Throat, and Jaw Surgery in Køge for CPAP treatment, who also experience severe daytime sleepiness, will be offered participation in this study. The goal is for 15 participants to complete the entire protocol. Procedure Overview Initial Sleep Assessment: The study begins with an in-depth sleep assessment through polysomnography (PSG) followed by a Multiple Sleep Latency Test (MSLT). PSG: This sleep study evaluates sleep structure, confirms sleep apnea, and rules out other sleep disorders. MSLT: This test measures the brain's tendency to fall asleep during the day. Additional Home-Based Sleep Studies: Participants will undergo two more PSG studies in their homes. EEG Monitoring: After the initial assessments, participants will have a small EEG electrode implanted to monitor brain activity. The implant, a CE-certified device called 24/7 EEG™ SubQ, will be inserted under local anesthesia by an experienced surgeon. Once post-surgery swelling subsides (after about 7-10 days), continuous EEG monitoring will begin, where participants connect an external data storage device during the day. The device records for …

This description comes directly from the study's public registry record.

Talk to the study team

Mathias Sarkez-Knudsen, MD  ·  +4521250736  ·  mrkn@regionsjaelland.dk

Preben Homøe, Professor  ·  +45 40879765  ·  prho@regionsjaelland.dk

Always discuss trial participation with your own doctor first.

Locations (1)

Zealand University HospitalKoege, Regional Zealand, DenmarkRecruiting

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Source record: clinicaltrials.gov/study/NCT06711159