Sugammadex vs Neostigmine/Glycopyrrolate on Urinary Retention After Spine Surgery

April 28, 2026 updated by: Julie Marshall, University of Missouri-Columbia

A Double-blind, Randomized, Parallel Group Study to Compare Rocuronium Reversal With Sugammadex (Bridion®) Versus Neostigmine/Glycopyrrolate and the Incidence of Urinary Retention After Elective Ambulatory Posterior Lumbar Laminectomy

This is an active-comparator controlled study to evaluate the effect of sugammadex compared to neostigmine/glycopyrrolate for reversal of rocuronium on the incidence of urinary retention after subjects undergo elective ambulatory spine surgery.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Subjects requiring elective ambulatory posterior lumbar laminectomy, will receive either an intravenous infusion bolus of Sugammadex (2 mg/kg dosed by actual body weight) or intravenous infusion bolus of Neostigmine (50 μg/kg, up to 5 mg maximum dose) plus Glycopyrrolate (10 μg/kg, up to 1 mg maximum dose). Additionally, all subjects will receive hospital standard of care therapy for their surgery and hospital stay.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
118

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Missouri
      • Columbia, Missouri, United States, 65212
        • University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age ≥ 18 years
  • ASA Physical Status I-III

Exclusion Criteria:

  • Inability to obtain written informed consent
  • Allergy to medications used in the protocol
  • Known or suspected neuromuscular disorders
  • Significant renal disease with a serum creatinine ≥ 2 mg/dL
  • Significant liver disease
  • A family history of malignant hyperthermia
  • History of genitourinary surgery, cancer, or radiation within the last year
  • Currently prescribed urological medications or diuretics
  • BPH or symptoms of BPH (interrupted or weak urine stream or wake up to urinate more than two times per night)
  • History or diagnosis of urinary incontinence or urinary retention
  • History of PONV with use of scopolamine
  • Use of Foley catheter pre- or intra- operatively
  • Perioperative medications that influence micturition (e.g., diuretics or intraoperative anticholinergic medication use other than NMB reversal)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Sugammadex 2 mg/kg
Sugammadex 2 mg/kg administered as a single intravenous (IV) dose.
Drug: Sugammadex
Sugammadex will be used to reverse rocuronium neuromuscular blockade (NMB). Dose will be according to participant actual body weight.
Other Names:
  • Bridion
  • MK-8616
Drug: Rocuronium
To achieve NMB, participants will receive the steroidal neuromuscular blocking agent Rocuronium Bromide administered via IV infusion and dosed according to participant actual body weight. It will be used per label to maintain muscle relaxation as an adjunct to general anesthesia.
Other Names:
  • Rocuronium Bromide
Active Comparator: Neostigmine + Glycopyrrolate
Neostigmine 50 μg/kg (up to 5 mg maximum dose) plus glycopyrrolate 10 μg/kg (up to 1 mg maximum dose) administered as a single IV dose.
Drug: Rocuronium
To achieve NMB, participants will receive the steroidal neuromuscular blocking agent Rocuronium Bromide administered via IV infusion and dosed according to participant actual body weight. It will be used per label to maintain muscle relaxation as an adjunct to general anesthesia.
Other Names:
  • Rocuronium Bromide
Drug: Neostigmine
Neostigmine will be used to reverse rocuronium NMB. Dose will be according to participant actual body weight.
Other Names:
  • Bloxiverz
Drug: Glycopyrrolate
Glycopyrrolate will be co-administered with neostigmine during reversal of rocuronium NMB. Dose will be according to participant actual body weight.
Other Names:
  • Glycopyrrolate injection, USP

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence of urinary retention
Time Frame: Up to 6 hours after administration of study intervention
The difference between sugammadex and neostigmine/glycopyrrolate on the incidence of urinary retention defined as no void more than 6 hours after posterior lumbar spine surgery in ambulatory/short stay patients.
Up to 6 hours after administration of study intervention

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Micturition
Time Frame: Up to 1 day after administration of study intervention
Between patients who received sugammadex and neostigmine/glycopyrrolate. To compare actual times of micturition we will analyze the proportion of patients (percentages) voided at 6, 9, 12 and 24 hours.
Up to 1 day after administration of study intervention
Bladder urine volume
Time Frame: Up to 6 hours after administration of study intervention
Between patients who received sugammadex and neostigmine/glycopyrrolate. To compare bladder urine volumes in milliliters (mL) we will perform bladder ultrasound scan at 6 hours postoperatively if patients did not void.
Up to 6 hours after administration of study intervention
Urinary retention symptoms
Time Frame: Up to 1 day after administration of study intervention
Between patients who received sugammadex and neostigmine/glycopyrrolate. To compare urinary retention symptoms, we will administer a questionnaire at 6 hours postoperatively and on postoperative day 1.
Up to 1 day after administration of study intervention
Bladder catheterization
Time Frame: Up to 1 Day after administration of study intervention
Between patients who received sugammadex and neostigmine/glycopyrrolate. To compare need for bladder catheterization (straight or Foley).
Up to 1 Day after administration of study intervention
Length of hospital stay
Time Frame: Up to 7 Days after administration of study intervention
Between patients who received sugammadex and neostigmine/glycopyrrolate. To compare length of hospital stay.
Up to 7 Days after administration of study intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Missouri-Columbia

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Merck Sharp & Dohme LLC

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Boris Mraovic, MD, FASA, University of Missouri-Columbia

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 3, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 15, 2026

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 15, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 25, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 24, 2023

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 2, 2023

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 5, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 28, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2096001
  • MISP Database number 101357 (Other Identifier: Merck Sharp & Dohme LLC)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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