Can a sleep machine tame a fluttering heart?
NCT ID NCT04513483
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at whether using a CPAP machine at night can reduce episodes of atrial fibrillation (a type of irregular heartbeat) in people who also have obstructive sleep apnea. Twenty-five adults with both conditions were enrolled. Half used CPAP while the other half were observed. The goal was to see if CPAP lowers the time spent in AFib and improves quality of life.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- continuous positive airway pressure (CPAP) device
- What this could lead to
- If successful, CPAP could become a standard add-on treatment to help control atrial fibrillation in patients with sleep apnea.
- What could go wrong
- This is a very small, early-stage study with only 25 participants. Results may not apply to everyone, and CPAP may not significantly reduce AF burden.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
25 people
The number who actually took part.
- Started
-
Aug 2020
- Finished
-
Aug 2025
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 80 years
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. men or women aged 18 to 80 years 2. paroxysmal AF, diagnosed based on the ACC/AHA/HRS 2014 guideline, and is defined as AF that terminates spontaneously or with intervention within 7 d of onset either by 12-lead EKG, 24-hr Holter, or 14-day ECG monitor. 3. OSA, defined as an AHI\>15/hr of sleep, of which \>50% of events are obstructive. 4. Informed consent signed Exclusion Criteria: 1. Moderate-severe valvular heart diseases (regurgitation or stenosis) 2. post heart surgery 3. Uncontrolled systemic hypertension or pulmonary hypertension 4. Use of psychoactive or other drugs that could influence breathing patterns 5. Current use of CPAP treatment 6. Epworth sleepiness scale\>10 7. Congestive heart failure (LVEF≦45%) 8. Chronic obstructive pulmonary disease 9. History of stroke or neuromuscular disease 10. Severe insomnia
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
National Taiwan University Hospital
Taipei, Taiwan
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