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Anesthesia, GeneralPhase 3NCT00473694

Comparison of Sugammadex (MK-8616/Org 25969) With Neostigmine Administered at 1-2 Post-tetanic Counts (PTCs) After Administration of Rocuronium or Vecuronium (19.4.302/P05945/MK-8616-025)

A Phase 3 study testing sugammadex, neostigmine and vecuronium in people with Anesthesia, General, run by Merck Sharp & Dohme LLC.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of the trial is to demonstrate a faster recovery from neuromuscular block (NMB) induced with rocuronium or vecuronium after reversal by 4.0 mg/kg of Org 25969 compared with reversal by 70 μg/kg of neostigmine in combination with 14 μg/kg glycopyrrolate. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Anesthesia, General
What is being tested?
sugammadex, neostigmine and vecuronium
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
182 participants
Where
No sites listed yet
Study dates
28 Nov 2005to 29 Jan 2007
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • American Society of Anesthesiologists (ASA) Class 1 to 4
  • 18 years or older
  • Scheduled to undergo an elective surgical procedure under general anesthesia requiring the use of rocuronium or vecuronium for endotracheal intubation and maintenance of neuromuscular block
  • Scheduled for surgery in supine position
  • Given written informed consent

Who cannot join

  • Participants in whom a difficult intubation is expected due to anatomical malformations
  • Known or suspected to have neuromuscular disorders impairing neuromuscular blockade and/or significant renal dysfunction
  • Known or suspected to have a (family) history of malignant hyperthermia
  • Known or suspected to have an allergy to narcotics, muscle relaxants, or other medications used during surgery
  • Receiving medication known to interfere with neuromuscular blocking agents such as anticonvulsants, antibiotics, and magnesium (Mg2+)
  • Participants in whom the use of neostigmine and/or glycopyrrolate may be contraindicated
Show all 10Show fewer
  • Female participants who are pregnant or breast-feeding
  • Females participants of childbearing potential not using an acceptable method of birth control [condom or diaphragm with spermicide, vasectomized partner (> 6 months), IUD, abstinence]
  • Participants who had already participated in an Org 25969 trial
  • Participants who had participated in another clinical trial, not pre-approved by Organon, within 30 days of entering into Protocol 19.4.302

About this study

Official title: A Multicenter, Randomized, Parallel Group Comparative, Active-Controlled, Safety-assessor Blinded. Phase IIIa, Pivotal Trial in Adult Subjects Comparing Org 25969 With Neostigmine as Reversal Agent of a Neuromuscular Block Induced by Maintenance Dosing of Rocuronium or Vecuronium at 1-2 PTCs

The purpose of the trial is to demonstrate a faster recovery from neuromuscular block (NMB) induced with rocuronium or vecuronium after reversal by 4.0 mg/kg of Org 25969 compared with reversal by 70 μg/kg of neostigmine in combination with 14 μg/kg glycopyrrolate.

Being tested
sugammadex, neostigmine, vecuronium, rocuronium, glycopyrrolate

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • sugammadexDrug

    Also called Org 25969, MK-8616, BRIDION®

    Administered as an intravenous (IV) infusion

  • neostigmineDrug

    Also called PROSTIGMIN®

    Administered as an IV infusion

  • vecuroniumDrug

    Also called NORCURON®

    Administered as an IV infusion

  • rocuroniumDrug

    Also called ZEMURON®

    Administered as an IV infusion

  • glycopyrrolateDrug

    Also called ROBINUL®

    Administered as an IV infusion

Study groups in NCT00473694
Study groupRoleWhat they receive
rocuronium+sugammadexExperimentalParticipants received a single bolus dose of 0.60 mg/kg rocuronium prior to intubation. The neuromuscular block was maintained with 0.15 mg/kg rocuronium if needed. At 1-2 post-tetanic counts (PTC) and after the last dose of rocuronium, a single bolus dose of 4.0 mg/kg sugammadex was administered.
Receives: Drug: sugammadex; Drug: rocuronium
rocuronium+neostigmineActive comparatorParticipants received a single bolus dose of 0.60 mg/kg rocuronium prior to intubation. The neuromuscular block was maintained with 0.15 mg/kg rocuronium if needed. At 1-2 PTC and after the last dose of rocuronium, a single bolus dose of 70.0 μg/kg neostigmine (up to a maximum dose of 5 mg) was administered in combination with 14.0 μg/kg glycopyrrolate.
Receives: Drug: neostigmine; Drug: rocuronium; Drug: glycopyrrolate
vecuronium+sugammadexExperimentalParticipants received a single bolus dose of 0.1 mg/kg vecuronium prior to intubation. The neuromuscular block was maintained with 0.015 mg/kg vecuronium if needed. At 1-2 PTC and after the last dose of vecuronium, a single bolus dose of 4.0 mg/kg sugammadex was administered.
Receives: Drug: sugammadex; Drug: vecuronium
vecuronium+neostigmineActive comparatorParticipants received a single bolus dose of 0.1 mg/kg vecuronium prior to intubation. The neuromuscular block was maintained with 0.015 mg/kg vecuronium if needed. At 1-2 PTC and after the last dose of vecuronium, a single bolus dose of 70.0 μg/kg neostigmine (up to a maximum dose of 5 mg) was administered in combination with 14.0 μg/kg glycopyrrolate.
Receives: Drug: neostigmine; Drug: vecuronium; Drug: glycopyrrolate

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Time From Start of Administration of Sugammadex or Neostigmine to Recovery of the T4/T1 Ratio to 0.9 After Neuromuscular Block (NMB) Induced by Rocuronium

    Mean time from start of sugammadex or neostigmine administration to recovery of T4/T1 ratio to 0.9 was assessed by applying repetitive train of four (TOF) electrical stimulations to the ulnar nerve every 15 seconds and assessing twitch response at the adductor pollicis muscle. Nerve stimulation continued until the ratio of the magnitude of the fourth twitch (T4) to first twitch (T1) reached at least 0.9. The greater the T4/T1 ratio represented the greater the recovery from NMB; with a value of 0.0 representing no recovery and 1.0 representing full recovery. Reduced recovery time of the T4/T1 ratio to 0.9 indicated faster recovery from NMB. Mean time was collected in minutes and seconds but converted to and presented in minutes only. The analysis included a procedure for the imputation of missing recovery times.

    Measured: Up to approximately 3 hours after administration of study drug

  2. Time From Start of Administration of Sugammadex or Neostigmine to Recovery of the T4/T1 Ratio to 0.9 After Neuromuscular Block (NMB) Induced by Vecuronium

    Mean time from start of sugammadex or neostigmine administration to recovery of T4/T1 ratio to 0.9 was assessed by applying repetitive train of four (TOF) electrical stimulations to the ulnar nerve every 15 seconds and assessing twitch response at the adductor pollicis muscle. Nerve stimulation continued until the ratio of the magnitude of the fourth twitch (T4) to first twitch (T1) reached at least 0.9. The greater the T4/T1 ratio represented the greater the recovery from NMB; with a value of 0.0 representing no recovery and 1.0 representing full recovery. Reduced recovery time of the T4/T1 ratio to 0.9 indicated faster recovery from NMB. Mean time was collected in minutes and seconds but converted to and presented in minutes only. The analysis included a procedure for the imputation of missing recovery times.

    Measured: Up to approximately 6 hours after administration of study drug

Secondary outcomes (9)
  1. Time From Start of Administration of Sugammadex or Neostigmine to Recovery of the T4/T1 Ratio to 0.7 After Neuromuscular Block (NMB) Induced by Rocuronium

    Mean time from start of sugammadex or neostigmine administration to recovery of T4/T1 ratio to 0.7 was assessed by applying repetitive train of four (TOF) electrical stimulations to the ulnar nerve every 15 seconds and assessing twitch response at the adductor pollicis muscle. Nerve stimulation continued until the ratio of the magnitude of the fourth twitch (T4) to first twitch (T1) reached at least 0.7. The greater the T4/T1 ratio represented the greater the recovery from NMB; with a value of 0.0 representing no recovery and 1.0 representing full recovery. Reduced recovery time of the T4/T1 ratio to 0.7 indicated faster recovery from NMB. Mean time was collected in minutes and seconds but converted to and presented in minutes only. The analysis included a procedure for the imputation of missing recovery times.

    Measured: Up to approximately 2 hours after administration of study drug

  2. Time From Start of Administration of Sugammadex or Neostigmine to Recovery of the T4/T1 Ratio to 0.7 After Neuromuscular Block (NMB) Induced by Vecuronium

    Mean time from start of sugammadex or neostigmine administration to recovery of T4/T1 ratio to 0.7 was assessed by applying repetitive train of four (TOF) electrical stimulations to the ulnar nerve every 15 seconds and assessing twitch response at the adductor pollicis muscle. Nerve stimulation continued until the ratio of the magnitude of the fourth twitch (T4) to first twitch (T1) reached at least 0.7. The greater the T4/T1 ratio represented the greater the recovery from NMB; with a value of 0.0 representing no recovery and 1.0 representing full recovery. Reduced recovery time of the T4/T1 ratio to 0.7 indicated faster recovery from NMB. Mean time was collected in minutes and seconds but converted to and presented in minutes only. The analysis included a procedure for the imputation of missing recovery times.

    Measured: Up to approximately 4 hours after administration of study drug

  3. Time From Start of Administration of Sugammadex or Neostigmine to Recovery of the T4/T1 Ratio to 0.8 After Neuromuscular Block (NMB) Induced by Rocuronium

    Mean time from start of sugammadex or neostigmine administration to recovery of T4/T1 ratio to 0.8 was assessed by applying repetitive train of four (TOF) electrical stimulations to the ulnar nerve every 15 seconds and assessing twitch response at the adductor pollicis muscle. Nerve stimulation continued until the ratio of the magnitude of the fourth twitch (T4) to first twitch (T1) reached at least 0.8. The greater the T4/T1 ratio represented the greater the recovery from NMB; with a value of 0.0 representing no recovery and 1.0 representing full recovery. Reduced recovery time of the T4/T1 ratio to 0.8 indicated faster recovery from NMB. Mean time was collected in minutes and seconds but converted to and presented in minutes only. The analysis included a procedure for the imputation of missing recovery times.

    Measured: Up to approximately 3 hours after administration of study drug

  4. Time From Start of Administration of Sugammadex or Neostigmine to Recovery of the T4/T1 Ratio to 0.8 After Neuromuscular Block (NMB) Induced by Vecuronium

    Mean time from start of sugammadex or neostigmine administration to recovery of T4/T1 ratio to 0.8 was assessed by applying repetitive train of four (TOF) electrical stimulations to the ulnar nerve every 15 seconds and assessing twitch response at the adductor pollicis muscle. Nerve stimulation continued until the ratio of the magnitude of the fourth twitch (T4) to first twitch (T1) reached at least 0.8. The greater the T4/T1 ratio represented the greater the recovery from NMB; with a value of 0.0 representing no recovery and 1.0 representing full recovery. Reduced recovery time of the T4/T1 ratio to 0.8 indicated faster recovery from NMB. Mean time was collected in minutes and seconds but converted to and presented in minutes only. The analysis included a procedure for the imputation of missing recovery times.

    Measured: Up to approximately 5 hours after administration of study drug

  5. Number of Participants Awake and Oriented After Anesthesia (Clinical Assessment of Level of Consciousness)

    The number of participants who were awake and oriented was assessed as part of an overall assessment of the clinical level of consciousness by the investigator. The clinical level of consciousness was used as a measure of recovery from NMB at 2 timepoints: prior to transfer to the recovery room after extubation and prior to discharge from the recovery room. Attempts were made to arouse participants every 15 minutes with mild prodding, mild shaking, and asking questions regarding name, location, and day of the week. The assessment ended once the participant was awake and fully orientated, 24 hours, or discharged from the hospital if discharge occurs before 24 hours; whichever occurred first. Participants were given a level of consciousness based on what type of stimulation they responded to. Participants who were not cooperative with the examination were not included in the assessment.

    Measured: Up to 24 hours

  6. Number of Participants Aroused With Minimal Stimulation After Anesthesia (Clinical Assessment of Level of Consciousness)

    The number of participants aroused with minimal stimulation was assessed as part of an overall assessment of the clinical level of consciousness by the investigator. The clinical level of consciousness was used as a measure of recovery from NMB at 2 timepoints: prior to transfer to the recovery room after extubation and prior to discharge from the recovery room. Attempts were made to arouse participants every 15 minutes with mild prodding, mild shaking, and asking questions regarding name, location, and day of the week. The assessment ended once the participant was awake and fully orientated, 24 hours, or discharged from the hospital if discharge occurs before 24 hours; whichever occurred first. Participants were given a level of consciousness based on what type of stimulation they responded to. Participants who were not cooperative with the examination were not included in the assessment.

    Measured: Up to 24 hours

  7. Number of Participants Responsive Only to Tactile Stimulation After Anesthesia (Clinical Assessment of Level of Consciousness)

    The number of participants responsive only to tactile stimulation was assessed as part of an overall assessment of the clinical level of consciousness by the investigator. The clinical level of consciousness was used as a measure of recovery from NMB at 2 timepoints: prior to transfer to the recovery room after extubation and prior to discharge from the recovery room. Attempts were made to arouse participants every 15 minutes with mild prodding, mild shaking, and asking questions regarding name, location, and day of the week. The assessment ended once the participant was awake and fully orientated, 24 hours, or discharged from the hospital if discharge occurs before 24 hours; whichever occurred first. Participants were given a level of consciousness based on what type of stimulation they responded to. Participants who were not cooperative with the examination were not included in the assessment.

    Measured: Up to 24 hours

  8. Number of Participants Able to Perform a 5-second Head Lift

    The number of participants who were able to lift their head for 5 seconds was assessed by the investigator as a measure of recovery from NMB at 2 timepoints: prior to transfer to the recovery room after extubation and prior to discharge from the recovery room. The assessment was performed every 15 minutes until the first successful 5-second head lift was achieved. Participants who were not cooperative with the examination were not included in the assessment.

    Measured: Up to 24 hours

  9. Number of Participants Experiencing General Muscle Weakness

    The number of participants experiencing general muscle weakness was assessed by the investigator as a measure of recovery from NMB at 2 timepoints: prior to transfer to the recovery room after extubation and prior to discharge from the recovery room. The assessments were performed every 15 minutes until the absence of general muscle weakness. A standardized examination form was used to determine the presence or absence of muscle weakness in various muscle groups. Participants who were not cooperative with the examination were not included in the assessment.

    Measured: Up to 24 hours

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 May 2007 (estimated)
  2. Study start28 Nov 2005
  3. Primary completion6 Nov 2006
  4. Study completion29 Jan 2007

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
182 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00473694
Sponsor's protocol ID
P05945
Other IDs
19.4.302, P05945, MK-8616-025
Status last verified
Mar 2019
First submitted
14 May 2007
Last updated
19 Mar 2019
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Lemmens HJ, El-Orbany MI, Berry J, Morte JB Jr, Martin G. Reversal of profound vecuronium-induced neuromuscular block under sevoflurane anesthesia: sugammadex versus neostigmine. BMC Anesthesiol. 2010 Sep 1;10:15. doi: 10.1186/1471-2253-10-15.

    PubMed 20809967
  • Jones RK, Caldwell JE, Brull SJ, Soto RG. Reversal of profound rocuronium-induced blockade with sugammadex: a randomized comparison with neostigmine. Anesthesiology. 2008 Nov;109(5):816-24. doi: 10.1097/ALN.0b013e31818a3fee.

    PubMed 18946293

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing sugammadex, neostigmine and vecuronium in people with Anesthesia, General, run by Merck Sharp & Dohme LLC.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 19 Mar 2019. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 7 Mar 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Time From Start of Administration of Sugammadex or Neostigmine to Recovery of the T4/T1 Ratio to 0.9 After Neuromuscular Block (NMB) Induced by Rocuronium (time frame: Up to approximately 3 hours after administration of study drug). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00473694, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Mar 2019.

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