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New study tests if your heart and eyes reveal hidden surgery nerves

NCT ID NCT04154410

Knowledge-focused Sponsor: Assistance Publique - Hôpitaux de Paris 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study looked at whether heart rate variability and pupil reflexes can objectively measure anxiety before surgery. Researchers monitored 71 day-case surgery patients using a finger sensor and a portable pupilometer before, during, and after a small needle insertion. The goal was to see if these physical signs could reliably tell anxious from non-anxious patients, potentially offering a more accurate way to assess pre-operative anxiety.

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 lead to a simple, objective way to measure anxiety before surgery without relying on patient self-reports.
What could go wrong
This is a small observational study with only 71 participants, so results may not apply to all patients. The measures may not be accurate enough to replace standard anxiety assessments.

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

71 people

The number who actually took part.

Started

Jun 2022

Finished

Dec 2022

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

Elective patients for day-case surgical procedure

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: -Day case surgical patients Exclusion Criteria: * \<18yo * psychiatric disorders * participating refusal

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As listed by the trial registrant

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

Eligible for day case surgery

Contacts and locations

Locations

  • Cochin Hospital, APHP

    Paris, France, 75014, France