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Does heart surgery trigger sleep apnea? a study tracks its course

NCT ID NCT02632162

Knowledge-focused Sponsor: Zürcher RehaZentrum Wald Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 02, 2026 · Last updated Sep 03, 2026 · Updated 1 time

Summary

This study follows 450 patients who recently had cardiac surgery to see how often sleep disordered breathing occurs and whether it changes over time. Researchers screen participants with the ApnoeLink Air device at the start of cardiac rehabilitation, again after 3 weeks, and at 3 months after surgery. The goal is to understand the natural course of sleep apnea in this group, which could inform future care.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Screening with the ApnoeLink Air device to detect sleep disordered breathing
What this could lead to
If this trial succeeds, it could clarify how often sleep apnea occurs after cardiac surgery and whether it resolves on its own, guiding future screening and treatment decisions.
What could go wrong
This is an observational study, so it won't test any treatment. The results may not apply to all heart surgery patients, and the screening device may not be perfectly accurate.

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.

Participants

About 450 people

The number the study aims to enrol. It can still change while the study runs.

Start date

May 2016

Finished

Dec 2020

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.

Who is studied

cardiac surgery \< 2 weeks

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * cardiac surgery or orthopedic surgery \<2 weeks Exclusion Criteria: * known SDB

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Conditions

The condition(s) this trial relates to.

sleep apnea syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Sleep disordered breathing

Contacts and locations

Locations

  • Zürcher RehaZentrum Wald

    Wald, 8636, Switzerland

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