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Fish oil before surgery may cut complications for constipation patients

NCT ID NCT07470892

Knowledge-focused Sponsor: Qianfoshan Hospital 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether giving fish oil nutrition before colon surgery helps patients with constipation recover better. About 306 adults will either get fish oil before surgery or only after. Researchers will compare complication rates, recovery, and quality of life. The goal is to find the best timing for this nutritional support.

What this could mean

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

Active substance
fish oil-containing parenteral nutrition
What this could lead to
If successful, this could show that starting fish oil nutrition before surgery reduces complications and speeds recovery for patients with constipation.
What could go wrong
This is an observational study, not a controlled trial, so results may be less reliable. It is also early-stage and may not prove a clear benefit.

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 306 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Sep 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.

Who is studied

Adult patients (18-75 years) with slow-transit constipation (STC) or megacolon who meet clinical and diagnostic criteria, are scheduled for elective colon surgery, and have nutritional risk (NRS2002 score \>=3). STC is identified based on Rome IV functional constipation criteria with objective evidence of delayed colonic transit and exclusion of outlet obstruction/pelvic floor dyssynergia. Megacolon is diagnosed based on clinical presentation and imaging evidence of colonic dilatation without mechanical obstruction, with exclusion of Hirschsprung disease and other obstructive causes. Participants are enrolled in a prospective multicenter real-world observational study comparing perioperative timing strategies of fish oil-containing parenteral nutrition.

Ages

18 to 75 years

Sex

Anyone

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. Age 18 to 75 years. 2. Meets diagnostic criteria for slow-transit constipation (STC) or megacolon and is scheduled for elective colon surgery. 3. Nutritional Risk Screening 2002 (NRS2002) score \>=3. 4. Receives fish oil-containing parenteral nutrition (PN) for \>=3 days preoperatively or initiates PN for the first time postoperatively (according to the study cohort definition). 5. Voluntarily participates in the study and provides signed informed consent. Exclusion Criteria: 1. Mental disorders or other conditions that prevent cooperation with treatment or follow-up. 2. Pregnant or breastfeeding women, women planning pregnancy / in a pre-pregnancy state, or women with a clear intention to become pregnant during the perioperative period or follow-up. 3. Contraindications to surgery or parenteral nutrition. 4. Concurrent enrollment in another study. 5. No baseline data available before initiation of nutritional support treatment. 6. Any other condition judged by the investigator to make the participant unsuitable for this study.

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Conditions

The condition(s) this trial relates to.

constipation disorder megacolon

As listed by the trial registrant

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

Constipation Megacolon Slow transit constipation

How to take part

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  1. The official record

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