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Robot vs. doctor: can a machine outperform anesthesiologists in fluid management?

NCT ID NCT01950845

Knowledge-focused Sponsor: Hospices Civils de Lyon 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether an automated closed-loop system could better manage fluid levels during major abdominal surgery compared to standard care by an anesthesiologist. Forty-six high-risk patients were randomly assigned to receive fluids via the automated system or manual control. The main goal was to see if the automated system improved cardiac output during surgery.

What this could mean

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

Active substance
Closed-loop automated fluid administration system (LIR®)
What this could lead to
If successful, this system could help doctors give fluids more precisely during surgery, potentially improving recovery and reducing complications.
What could go wrong
This is a small, early-stage study with only 46 patients, so results may not apply to everyone. The system may not work better than standard care and could have technical issues.

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

46 people

The number who actually took part.

Start date

Feb 2014

Finished

Oct 2015

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: * Elective major abdominal surgery * Patient physical status ASA 2-4 * General anesthesia with positive pressure ventilation * High risk surgical patient with a per operative Vigileo® cardiac output monitoring decided a priori. Exclusion Criteria: * Pregnant female * Intraoperative hyperthermic chemotherapy procedure * Patient physical status ASA more than 4 * Patient with allergy to hydroxyethyl starch * Cardiac arrhythmia * ventilation with tidal volume inferior 7mL/Kg

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As listed by the trial registrant

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

Colorectal surgery Hepatectomy Major abdominal surgery Pancreatectomy Pancreaticoduodenectomy

Contacts and locations

Locations

  • Centre Hospitalier Lyon Sud, Hospices Civils de Lyon

    Pierre-Bénite, 69 495, France

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