A portable sleep test could unmask hidden sleep apnea in millions with high blood pressure

NCT ID NCT05918120

Ongoing Diagnosis Sponsor: Sunnybrook Health Sciences Centre Source: ClinicalTrials.gov ↗

Running, but no longer taking on new participants.

First seen Aug 20, 2026 · Last updated Aug 21, 2026 · Updated 1 time

Summary

This trial tests whether a portable home sleep apnea test can be as effective as an in-laboratory sleep study for diagnosing obstructive sleep apnea in people with high blood pressure. Participants are randomly assigned to either the home test or the lab test, and researchers compare how many get diagnosed and treated, as well as changes in blood pressure and quality of life over six months. The goal is to see if the easier, more accessible home test could help more people get the diagnosis and treatment they need.

What this could mean

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

Active substance: Home sleep apnea test (HSAT) compared with in-laboratory polysomnography (iPSG)
What this could lead to: If home testing proves as effective as lab testing, it could make sleep apnea diagnosis easier and more accessible for people with high blood pressure, potentially improving blood pressure control and reducing heart risks.
What could go wrong: The trial is relatively small and early, and home testing may not detect all cases as accurately as lab testing. Also, easier diagnosis doesn't guarantee better long-term outcomes.

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

About 190 people

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

Started

Nov 2023

Expected to finish

Sep 2026

An estimate. End dates often move.

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 years and older

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: * (1) Hypertension, defined as: * uncontrolled blood pressure on or off medications, or * controlled blood pressure on 2 or more blood-pressure lowering medications * (2) At high risk for OSA: * STOP-BANG sleep apnea screening tool ≥3, or * Concomitant renal disease (estimated glomerular filtration rate \[eGFR\] 15-59), or * Resistant hypertension, defined as a blood pressure above target despite 3 or more BP-lowering drugs at optimal doses (preferably including a diuretic) Exclusion Criteria: * prior diagnosis of OSA, current use of CPAP, life expectancy less than 6 months, eGFR\<15, gestational hypertension or preeclampsia, current use of dialysis, and physical/cognitive impairment/language barrier restricting the ability to complete the study assessments.

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Conditions

The condition(s) this trial relates to.

hypertensive disorder obstructive sleep apnea syndrome

As listed by the trial registrant

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

HYPERTENSION OBSTRUCTIVE SLEEP APNEA

Contacts and locations

Locations

Citrus Medical Clinic

Toronto, Ontario, M8V 0B1, Canada
Sunnybrook Health Sciences Centre

Toronto, Ontario, M4N3M5, Canada
Women's College Hospital

Toronto, Ontario, M5S 1B2, Canada

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