ClinicalTrials.gg
RecruitingNCT05632107Updated Apr 3, 2026

Comparison of an Acceleromyography- and Electromyography-based Neuromuscular Monitor With TOF-Watch ® Monitor

An observational study in Neuromuscular Blockade, sponsored by Huazhong University of Science and Technology. Recruiting at 2 sites in China. Open to participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2026-04-03.

Sponsored by Huazhong University of Science and Technology · Observational

From the registry’s dates

  • Started Mar 2023; still recruiting 3 years 8 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
100
Ages
18 Years to 90 Years
Sex
All
01

Study summary

A quantitative neuromuscular monitoring device is desirable to titrate the depth of neuromuscular block (NMB) during a procedure, and to prevent residual effects after removal of the endotracheal tube. Unfortunately, the most widely used monitoring technique acceleromyography (AMG) typically implies a series of cumbersome installation and calibration procedures that frequently precludes correct use of these devices in clinical practice. Electromyography (EMG) has recently attracted a lot of attention as an alternative strategy to compensate for the deficiency of AMG-based neuromuscular monitors. Nowadays, a new technology that allows for the simultaneous acquisition of EMG and AMG signals is commercially available. Although its reliability has been rapidly accepted in Physical Medicine and Rehabilitation, the use of the technique in neuromuscular monitoring has never been reported. The aim of the present study is to assess the validity of the new device for estimating the neuromuscular block by comparing with TOF Watch®-SX, which is the most widely accepted AMG-based neuromuscular monitor that has been practiced in the clinical arena for decades.

02

Conditions studied

  • Neuromuscular Blockade

Keywords

  • neuromuscular blocking agents; residual neuromuscular blockade; neuromuscular monitoring; acceleromyography; electromyography
03

In context

Delayed Emergence from Anesthesia

98 studies on the registry are indexed under Delayed Emergence from Anesthesia; 17 are open to participants now.

This study's planned enrollment of 100 is close to the median of 100 across 39 observational studies indexed under Delayed Emergence from Anesthesia.

Browse Delayed Emergence from Anesthesia studies →

Lead sponsor

Huazhong University of Science and Technology is the lead sponsor of 247 studies on the registry; 62 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Patients who need to be treated surgically under general anesthesia and are going to receive neuromuscular blocking agents.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age less than 18 yr
  • Physical Status I to III
  • Elective surgery requiring muscle relaxation
  • Patients participated voluntarily and signed

Exclusion criteria

Exclusion Criteria:

  • Patients with known neuromuscular disorder
  • Stroke
  • Patients with a history of allergic reaction toneuromuscular blocking agents
  • Use of medications that might interfere with neuromuscular transmission
  • Any previous injury to the examined arm that might influence nerve conduction parameters
  • Pacemaker
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ASA physical status

The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
100 participants (estimated)
Patient registry
No

Interventions

  • DeviceTOF-Watch®;DELSYS® Wireless surface EMG

    TOF-Watch® is the most widely accepted AMG-based neuromuscular monitor; and DELSYS® Wireless surface EMG is a new technology that allows for the simultaneous acquisition of EMG and AMG signals in a wireless manner.

06

What researchers measure

Primary outcomes

  1. Assessing the correlation between the train-of-four (TOF) obtained from the 2 devices

    Time frame: Perioperative data

  2. Assessing the correlation between the posttetanic count (PTC) obtained from the 2 devices

    Time frame: Perioperative data

Secondary outcomes

  1. Screening for eligible individual signal sources from the multiplex information of the new technology for improving neuromuscular monitoring

    Time frame: Perioperative data

07

Study locations

2 of 2 sites recruiting
  • Department of Anaesthesiology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology
    Wuhan, Hubei 430030, China
    Recruiting
    • Hua Zheng, Dr. · Contacthzheng@hust.edu.cn · 0086-27-83663173
    • Yan Fang, Dr. · Sub investigator
  • Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology
    Wuhan, Hubei 430030, China
    Recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Mar 2023 (actual). Primary completion is estimated for Dec 2026, 45 months after the start.

Of 21 observational studies under Delayed Emergence from Anesthesia, half reached primary completion within 7 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 32. This study's planned 45 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 20, 2022
First posted
Nov 30, 2022
StartActual
Mar 1, 2023
Primary completionEst.
Dec 2026
CompletionEst.
Dec 2027
Last update
Apr 3, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 3, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05632107
Responsible party
Hua Zheng (Associate Professor, Huazhong University of Science and Technology) — Principal investigator
First posted
Nov 30, 2022
Start date
Mar 1, 2023
Primary completion
Dec 2026 (estimated)
Completion
Dec 2027 (estimated)
Last update
Apr 3, 2026

Study contacts

Hua Zheng, Dr.
Contact
hzheng@hust.edu.cn
0086-27-83663173
Hua Zheng, Dr.
study director · Department of Anesthesiology, Tongji Hospital

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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