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Massive 10,000-person study to reveal how sleep apnea treatment affects heart health

NCT ID NCT05115994

Knowledge-focused Sponsor: Vastra Gotaland Region 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 This study
Running, but no longer taking on new participants.
Completed
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study follows 10,000 people with both obstructive sleep apnea and high blood pressure over many years. Researchers will track how well patients use CPAP machines and blood pressure medications, and whether this reduces the chance of heart attacks, strokes, heart failure, or death. The goal is to find the best treatment strategies to protect the heart in this high-risk group.

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 and antihypertensive medications
What this could lead to
If successful, this could clarify which treatments best prevent heart attacks, strokes, and death in people with both sleep apnea and high blood pressure.
What could go wrong
This is an observational registry study, not a controlled trial, so it can show links but not prove cause and effect. Results may take years and might not apply to everyone.

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 10,000 people

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

Started

Jan 2008

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Propensity score matched registry cohorts

Ages

18 to 75 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.

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: * All hypertensive and obstructive sleep apnea patients present in QregPV and SESAR 2008-2021. Exclusion Criteria: * Patients in the hypertensive control group (without OSA) will be excluded if they have OSA diagnosis but are not present in the SESAR registry. * Subjects with missing data on any of the variables in the fitted model unless the missing data can be accurately imputated. * Patients with low life expectancy (Age\>75 at study start, malignant disease). * Patients no longer living in VGR 2021.

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Conditions

The condition(s) this trial relates to.

cardiac arrest Death heart failure hypertensive disorder obstructive sleep apnea syndrome Patient Compliance stroke disorder

As listed by the trial registrant

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

Death, cardiac Heart failure Hypertension Obstructive sleep apnea Stroke Treatment compliance

Contacts and locations

Locations

  • Sahlgrenska University Hospital

    Gothenburg, Västra Götaland County, 413 45, Sweden

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