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Feeding time may be key to better sleep in the ICU

NCT ID NCT04737200

Knowledge-focused Sponsor: Massachusetts General Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 whether giving tube feedings during the day instead of at night can improve sleep and body rhythms in patients recovering from heart surgery in the ICU. Researchers will monitor sleep patterns and body temperature in 30 adults. The goal is to learn if simple changes in feeding schedules can reduce sleep disruptions and support recovery.

What this could mean

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

Active substance
timing of enteral nutrition (tube feeding)
What this could lead to
If it works, this could point toward simple changes in feeding schedules to help ICU patients sleep better and recover more smoothly.
What could go wrong
This is a very small, early study with only 30 participants, so results may not apply to all ICU patients. It is designed to gather knowledge, not to test a treatment.

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 30 people

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

Started

Feb 2022

Expected to finish

Mar 2027

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: * Adult male or non-pregnant female volunteers (age 18+) * Scheduled for a cardiac surgical procedure with planned post-operative admission to the ICU for \>48 hours * Able and willing to give consent and comply with study procedures Exclusion Criteria: * Blind, deaf or unable to speak English * Women who are pregnant or nursing * Contraindications to safe use enteral nutrition, including gastrointestinal obstruction * Personal history of intestinal malabsorption, gallbladder disease or pancreatitis * Dietary restrictions precluding enteral feeds * Renal and liver failure requiring dialysis or Child-Pugh score \> 7 * Severe deficit due to structural or anoxic brain damage * With skin condition that precludes wearing sensors

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Conditions

The condition(s) this trial relates to.

Feeding Behavior glucose intolerance sleep disorder

As listed by the trial registrant

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

Feeding patterns Glucose intolerance 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

  • Massachusetts General Hospital

    RECRUITING

    Boston, Massachusetts, 02114, United States

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