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Can your phone replace anesthesia monitors? new study says maybe

NCT ID NCT03605225

Knowledge-focused Sponsor: Universitair Ziekenhuis Brussel Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 a new Android app designed to measure how relaxed a patient's muscles are during surgery. Researchers compared the app's readings to those from standard medical monitors in 22 adults undergoing elective procedures. The goal was to see if the app could accurately track muscle relaxation, which helps anesthesiologists give the right amount of medication.

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

22 people

The number who actually took part.

Started

Feb 2018

Finished

Nov 2018

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 to 75 years

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: * American Society of Anaesthesiology (ASA) physical status classification I to III * elective procedures under general anesthesia requiring use of a non-depolarizing neuromuscular blocking agent Exclusion Criteria: * Known or suspected central or peripheral neuropathies of any ethology * Muscular dystrophies * Skin burns and trauma at measurement sites (arms). * Musculo-tendinopathies of the arms and hands. * All conditions that might be judged to alter appropriate peripheral neuromuscular conduction. * Fragile skin impeding placement of electrocardiogram electrodes at measurement sites. * Allergy to ECG Electrodes * Intra-operative position impeding proper use of any of the two used neuromuscular monitors. * Calibration/device failure * Failure to properly stabilize the patient's hand in supination (so that the smartphone won't dislocate itself during measurements) * Patient premedication judged to interfere with proper cognitive assimilation of the study concept.

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As listed by the trial registrant

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

Neuromuscular blockade Neuromuscular monitoring

Contacts and locations

Locations

  • universitair Ziekenhuis brussel

    Jette, België, 1090, Belgium

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