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Scientists probe why some People's blood pressure Doesn't dip at night

NCT ID NCT05184933

Knowledge-focused Sponsor: Oregon Health and Science University Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at how sleep and the body's internal clock influence blood pressure in people with hypertension. Researchers will monitor 32 adults aged 25-64 to understand why some have a 'non-dipping' pattern where blood pressure stays high at night. The goal is to uncover mechanisms that could lead to better heart health management.

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 32 people

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

Started

Aug 2022

Expected to finish

Mar 2029

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

25 to 64 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: * Ages 25-64 * BMI 18.5-42kg/m2 * Hypertension (average resting blood pressure between 130/80 mmHg and 160/100 mmHg) Exclusion Criteria: * Over 5 pack-years of smoking; * Prior shift work within 12 months prior to the study; * Travel greater than three time zones for at least 3 months; * History of heart failure, cardiomyopathy, or history of bypass surgery, angioplasty, or previous myocardial infarction; * Acute or chronic diseases (except hypertension) that may affect outcome measures; * History of psychological conditions; * Sleep disorders, like severe sleep apnea, insomnia, etc.; * Prescription medications (Contraceptives and anti-hypertensive medications are permissible); * History of Illicit drug use and alcohol dependency; * 30 days free of cannabis use prior to the study; * Pregnancy; * Upper cut-off of 160/100 mmHg for BP

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Conditions

The condition(s) this trial relates to.

cardiovascular disorder hypertensive disorder sleep disorder

As listed by the trial registrant

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

Cardiovascular diseases Cardiovascular risk factors Circadian rhythms Hypertension Sleep

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Oregon Health and Science University

    RECRUITING

    Portland, Oregon, 97239, United States

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