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Oxygen levels after heart surgery linked to delirium in 1,000-Patient study

NCT ID NCT07548905

Knowledge-focused Sponsor: Southeast University, China 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed study looked at 1,000 patients who had heart surgery and were then moved to the ICU. Researchers tracked whether high or low oxygen levels increased the chance of developing delirium, a state of confusion. The goal was to understand how oxygen management might affect recovery after cardiac surgery.

What this could mean

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

What this could lead to
If the results show a clear link, it could lead to better oxygen management in ICUs to reduce delirium after heart surgery.
What could go wrong
This is an observational study, not a treatment trial. It can show a connection but cannot prove that changing oxygen levels prevents delirium.

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

1,000 people

The number who actually took part.

Started

Jan 2024

Finished

Jan 2026

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

patients undergoing cardiac surgery

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.

1.undergoing cardiac surgery 2.transferred into ICU after the surgery

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Conditions

The condition(s) this trial relates to.

delirium Emergence Delirium Hyperoxia Hypoxia

As listed by the trial registrant

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

Cardiac surgery Delirium, postoperative Hyperoxia Hypoxemia

Contacts and locations

Locations

  • Zhongda Hospital Southeast University

    Nanjing, Jiangsu, China

More trials for these conditions

Other studies related to the condition(s) this trial covers.