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Heartbeat clues may spot hidden surgical dangers

NCT ID NCT04367987

Diagnosis Sponsor: Centre Hospitalier Universitaire de Nīmes 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 explores whether measuring heart rate variability—the natural ups and downs in heartbeat timing—can help detect complications like leaks or abscesses after planned colorectal surgery. Researchers will monitor patients for a week after surgery and compare heart rate patterns with imaging results. The goal is to find a simple, non-invasive early warning sign for serious post-surgical issues.

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 successful, this could provide a simple, non-invasive way to detect serious complications early after colorectal surgery.
What could go wrong
This is an observational study with a small sample size (117 people). The link between heart rate variability and complications may not be strong enough to be clinically useful.

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 117 people

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

Started

Jun 2020

Expected to finish

Jun 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.

Who is studied

All patients undergoing scheduled colorectal resection or operated on in the digestive surgery department of the CHU Nîmes

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: * Patients operated for a scheduled colorectal resection due to cancer, diverticulitis, or Chronic Inflammatory Bowel Disease, * American Society of Anesthesiologists score 1-2 * The patient must have given their free and informed consent and signed the consent form * The patient must be a member or beneficiary of a health insurance plan Exclusion Criteria: * Patient taking antidepressants, antipsychotics, antihypertensive beta blocker type, anti-arythmic or oral contraception * Uncontrolled diabetes or associated with a neuropathy * Arrhythmias and conduction disturbances, , coronaropathy and heart failure, kidney failure * Neuropathies * Pacemaker or defibrillator * The subject is participating in another interventional study, or is in a period of exclusion determined by a previous study * The subject refuses to sign the consent * It is impossible to give the subject informed information * The patient is under safeguard of justice or state guardianship

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Conditions

The condition(s) this trial relates to.

colorectal cancer diverticulitis inflammatory bowel disease

As listed by the trial registrant

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

Surgery--complications

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

  • CHU de Nimes

    RECRUITING

    Nîmes, France

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