NCT06609694 · Children's Hospital Medical Center, Cincinnati
Comparison of a Demand Oxygen Delivery
(DOSA)
What this study is about
Conducting a randomly assigned control trial of oxygen in children with Down syndrome to treat moderate to severe obstructive sleep apnea. The aim of the study is to conduct a comparison between the 2 methods of oxygen delivery during sleep in 15 children from Cincinnati Children's Hospital and Children's Hospital of Los Angeles.
View original scientific description
Conducting a randomized control trial of oxygen in children with Down syndrome to treat moderate to severe obstructive sleep apnea. The aim of the study is to conduct a comparison between the 2 methods of oxygen delivery during sleep in 15 children from Cincinnati Children's Hospital and Children's Hospital of Los Angeles. 2 polysomnographies will be performed, one with continuous flow and the second with pulse flow.
Interventions
DEVICE
Portable oxygen concentrator Inogen G5 model
The concentrator weighs 4.7 lbs. and has a battery life of 13 hours. It has 6 settings with 1 providing the lowest pulse flow and 6 provides the highest flow. The setting will be increased every 30 minutes by 1 when oxygen nadir is lower than 94% and or obstructive index is ≥ 5 /hour.
Primary outcome measures
Drop in Apnea Hypopnea Index (0-4 /night) by 50 % or < 5 /hour
Time frame: 6 months
Percent of children with a drop in Apnea Hypopnea Index (AHI) by 50% or \< 5 /hour
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Age 5-17 years with or without Down Syndrome (DS).
- Children with obstructive sleep apnea (OSA) and obstructive apnea hypopnea index (OAHI) 5-40 / hour: The rationale for selecting this range of OAHI is that a large number of children with DS with this range of OSA severity are untreated for months to years. It is important to understand the response to oxygen across the spectrum of disease severity. Notably, children with severe disease are left with few options (e.g., tracheostomy).
- Absence of clinically significant hypoxia defined as oxygen saturation \< 88% for 5 minutes or episodic desaturation to 60% as these levels would otherwise identify children eligible to routinely receive oxygen.
Exclusion criteria
- Current CPAP use with documented compliance (\> 4 hrs/ night; \> 70% of nights).
- Oxygen saturation \< 90% at rest during wakefulness
- Chronic daytime or nighttime use of supplemental oxygen.
- Unable to participate in a Polysomnogram (PSG).
- Enrolled or planning to enroll in another study that may conflict with protocol requirements or confound results in this trial.
Where
- Cincinnati, Ohio
Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jan 7, 2026 · Source of record for eligibility and locations