ClinicalTrials.gg
CompletedNCT05866315Updated Oct 6, 2023

The Effect of Remimazolam on Opioid Induced Hyperalgesia

An interventional study of Remimazolam and Desflurane in Hyperalgesia, Mechanical, sponsored by Wonkwang University Hospital. Completed at 2 sites in Korea, Republic of. Open to participants aged 20 Years to 65 Years. Per ClinicalTrials.gov, last updated 2023-10-06.

Sponsored by Wonkwang University Hospital · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
108
Allocation
Randomized
Ages
20 Years to 65 Years
Sex
All
01

Study summary

The goal of this prospective, randomized, controlled study is to investigate the effect of remimazolam on opioid-induced hyperalgesia (OIH) in patients undergoing single port-laparoscopically assisted urologic surgery.

The main question[s] it aims to answer are:

  • [The mechanical hyperalgesia threshold]
  • [Area of hyperalgesia around the surgical incision 24 h after surgery (cm\^2)]

In three groups: Group RHR (Remimazolam- High-dose Remifentanil), Group DHR (Desflurane-low-dose Remifentanil) or Group DLR (Control).

Read the detailed description

Ninety-three (n = 31 per group) American Society of Anesthesiologists I-II patients (age 20-65 years) will be scheduled for single port-laparoscopically assisted urologic surgery.

Group RHR (Remimazolam-Remifentanil): Administer remimazolam at a dose of 6 mg/kg/h initially, followed by 1 mg/kg/h, and remifentanil at 0.3 µg/kg/min.

Group DHR (Desflurane-Remifentanil): Administer desflurane at 1 minimum alveolar concentration (MAC), adjusting the dose by 1 vol% titration to maintain MAP and BIS levels, and remifentanil at 0.3 µg/kg/min.

Group DLR (Control): Administer desflurane at 1 MAC, adjust the dose by 1 vol% titration to maintain mean arterial pressure (MAP) and bispectral index (BIS) levels, and remifentanil at 0.3 µg/kg/min.

Mechanical hyperalgesia threshold, Time to first postoperative analgesic requirement (min), Injected PCA volume containing morphine for 12 h after surgery (ml), Pain intensity: VAS 1 h after surgery, VAS 6 h after surgery, VAS 12 h after surgery VAS 24 h after surgery. Area of hyperalgesia around the surgical incision 24 h after surgery (cm\^2) will be checked.

02

Conditions studied

  • Hyperalgesia, Mechanical

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Keywords

  • remifentanil
  • remimazolam
  • opioid-induced hyperalgesia
03

In context

Hyperalgesia

166 studies on the registry are indexed under Hyperalgesia; 14 are open to participants now.

This study's enrollment of 108 is above the median of 50 across 142 interventional studies indexed under Hyperalgesia.

Browse Hyperalgesia studies →

Lead sponsor

Wonkwang University Hospital is the lead sponsor of 26 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
20 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

  1. Inclusion criteria will include as follows; ASA()physical status 1-2 patients, Age with 20-65 years, and Single port-laparoscopically assisted urologic surgery.
  2. Exclusion criteria will include as follows; a known allergy to remimazolam or remifentanil, a history of drug or alcohol abuse, psychiatric disorders, acute cardiovascular disorders, or unstable hypertension, and other respiratory or neuromuscular pathology, treated with opioid-containing any analgesic drug within 24 h before surgery and to the self-administration of opioids (i.e., were unable to understand the PCA device).
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.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Outcomes assessor)
Enrollment
108 participants (actual)

Study arms

  • Active comparator
    Group DLR

    Administer desflurane at 1 MAC, adjust the dose by 1 vol% titration to maintain MAP and BIS levels, and remifentanil at 0.025 µg/kg/min.

    Drug: Desflurane · Drug: Remifentanil

  • Experimental
    Group DHR

    Administer desflurane at 1 MAC, adjusting the dose by 1 vol% titration to maintain MAP and BIS levels, and remifentanil at 0.3 µg/kg/min.

    Drug: Desflurane · Drug: Remifentanil

  • Experimental
    Group RHR

    Administer remimazolam at a dose of 6 mg/kg/h initially, followed by 1 mg/kg/h, and remifentanil at 0.3 µg/kg/min.

    Drug: Remimazolam · Drug: Remifentanil

Interventions

  • Administer remimazolam

    Also known as: Byfavo

  • administer desflurane

    Also known as: desfuralne

  • administer remifentanil

    Also known as: Ulitva

06

What researchers measure

Primary outcomes

  1. The mechanical hyperalgesia threshold

    The mechanical hyperalgesia threshold (g/mm\^2) (preoperative) and 2 cm from the single port incision site (postoperative) at four points (horizontally and perpendicularly).

    Time frame: at 24 hours after surgery

Secondary outcomes

  1. Time to first postoperative analgesic requirement

    Time to first postoperative analgesic requirement (min)

    Time frame: Within 1 hour after surgery

  2. Injected PCA volume containing morphine for 24 h after surgery

    Injected PCA volume containing morphine for 24 h after surgery (ml)

    Time frame: 24 hours after surgery

  3. Pain intensity

    The Visual analogue scales (VAS)-100 is a line with words describing the extremes of pain from "no pain" to "worst imaginable pain".

    Time frame: 1 hour after surgery

  4. Pain intensity

    The Visual analogue scales (VAS)-100 is a line with words describing the extremes of pain from "no pain" to "worst imaginable pain".

    Time frame: 6 hours after surgery

  5. Pain intensity

    The Visual analogue scales (VAS)-100 is a line with words describing the extremes of pain from "no pain" to "worst imaginable pain".

    Time frame: 12 hours after surgery

  6. Pain intensity

    The Visual analogue scales (VAS)-100 is a line with words describing the extremes of pain from "no pain" to "worst imaginable pain".

    Time frame: 24 hours after surgery

  7. Area of hyperalgesia around surgical incision

    Area of hyperalgesia around surgical incision (cm\^2)

    Time frame: 24 hours after surgery

07

Study locations

2 sites
  • Wonkwag UH
    Iksan, Jeollabukdo 54538, Korea, Republic of
  • Wonkwang University hospital
    Iksan, 54538, Korea, Republic of
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

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

Ran from May 2023 to primary completion in Sep 2023, 3 months.

Of 27 non-industry interventional studies with no phase under Hyperalgesia, half reached primary completion within 11 months of starting (the median), counting those still running; a quarter within 4 and three quarters within 32. This study's 3 months is below that.

Counting every sponsor, half of 27 studies reached it within 11 months; a quarter within 4 and three quarters within 32.

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

Registered
Mar 28, 2023
First posted
May 19, 2023
StartActual
May 19, 2023
Primary completionActual
Sep 6, 2023
CompletionActual
Sep 15, 2023
Last update
Oct 6, 2023
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 Oct 6, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05866315
Lead sponsor
Wonkwang University Hospital
Responsible party
Cheol Lee,MD,PhD, (Professor, Wonkwang University Hospital) — Principal investigator
First posted
May 19, 2023
Start date
May 19, 2023
Primary completion
Sep 6, 2023
Completion
Sep 15, 2023
Last update
Oct 6, 2023

Study contacts

Cheol Lee, M.D.,Ph.D.
study director · Wonkwang University Hospital

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Remimazolam

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