Expired Study
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Portland, Oregon 97239


The purpose of this study is to learn more about breathing disorders during sleep. The investigators want to learn how breathing sounds made during sleep relate to breathing disorders during sleep.

Study summary:

The purpose of this study is to evaluate the feasibility of assessing breathing problems during sleep with minimally obtrusive sensors (a bedside microphone and wireless pulse oximeter worn on the fingertip). The investigators will use the data collected with these sensors to develop algorithms for automatically detecting sleep apnea events. Subjects will be asked to place unobtrusive sensors (bedside microphone and wireless pulse oximeter) in their home sleep environment. The subjects will start the at-home data collection before they fall asleep, and stop the data collection the next morning when they wake. The subjects will then return the sensors to the investigator for analysis. We are looking for people interested in participating in the at-home portion of our study. We will only collect at-home data for one night of sleep per subject. After this one night, no further data collection or monitoring will occur. Subjects will be compensated for their time. A standard sleep-breathing questionnaire (the "Berlin Questionnaire") will be administered. This questionnaire is widely used as a screening tool to determine if a person may have disordered breathing during sleep. This questionnaire consists of 10 multiple-choice questions related to snoring, daytime sleepiness, and other related conditions.


Inclusion Criteria: - Age 21-89 - No self-reported sleep breathing problems Exclusion Criteria: - Prior diagnosis for a sleep breathing problem (such as sleep apnea) - Self-reported insomnia - History of stroke - Nasal or soft palate surgery in the last 12 months - Use of a breathing assistance device (such as a CPAP machine)



Primary Contact:

Principal Investigator
Jan van Santen, Ph.D.
Oregon Health and Science University

Backup Contact:


Location Contact:

Portland, Oregon 97239
United States

There is no listed contact information for this specific location.

Site Status: N/A

Data Source: ClinicalTrials.gov

Date Processed: November 18, 2019

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