Preemptive and Preventive Acetaminophen/Ibuprofen Fixed-dose Combination After Robot-assisted Radical Prostatectomy

September 4, 2025 updated by: Hojin Lee, MD, PhD, Seoul National University Hospital

Comparison of the Opioid-sparing Effect of Preemptive and Preventive Intravenous Acetaminophen/Ibuprofen Fixed-dose Combination After Robot-assisted Radical Prostatectomy: A Double-blind Randomized Controlled Trial

This prospective, randomized, double-blinded study is designed to compare opioid-sparing effect of preemptive and preventive intravenous acetaminophen/ibuprofen fixed-dose combination in patients undergoing robot-assisted radical prostatectomy (RARP). We hypothesize that preemptive administration of intravenous acetaminophen/ibuprofen fixed-dose combination can significantly reduce postoperative opioid consumption and pain severity than preventive administration in patients undergoing RARP.

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

Adult patients undergoing elective robot-assisted radical prostatectomy are randomly allocated to receive preemptive administration of acetaminophen (1000 mg)/ibuprofen (300 mg) fixed-dose combination (n=77) or preventive administration (n=77). The preemptive administration group will receive intravenous acetaminophen (1000 mg)/ibuprofen (300 mg) for 15 minutes at the end of induction of anesthesia. The preventive administration group will receive same dosage of drug for same duration when surgical site closure starts.

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.
154

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.
  • Not Applicable

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 Contact Backup

Study Locations

  • South Korea
    • Seoul
      • Seoul, Seoul, South Korea, KS013
        • Seoul National 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

19 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients scheduled to undergo elective robot-assisted radical prostatectomy under general anesthesia
  • American Society of Anesthesiologists (ASA) physical classification I-II
  • Consent to IV-patient controlled analgesia use
  • Willingness and ability to sign an informed consent document

Exclusion Criteria:

  • Who do not understand or agree with our study
  • American Society of Anesthesiologists (ASA) physical classification III-IV
  • Chronic usage of opioid analgesics
  • Moderate to severe pain with other cause before surgery
  • Allergies to anesthetic or analgesic medications used in this study
  • Anticipated blood loss larger than 2 liters
  • Need for intensive care after surgery
  • History of gastric ulcer or gastrointestinal bleeding
  • History of liver failure, renal failure or heart failure
  • Current alcoholism
  • Taking anti-coagulation drugs or history of coagulation disease
  • History of bronchial asthma
  • Medical or psychological disease that can affect the treatment response
  • Taking barbitutate or tricyclic antidepressant

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: Preemptive administration group
Preemptive administration group will receive intravenous acetaminophen (1000 mg)/ibuprofen (300 mg) for 15 minutes at the end of induction of anesthesia.
Drug: Acetaminophen/Ibuprofen fixed-dose combination
Intravenous administration of Acetaminophen (1000 mg)/Ibuprofen (300 mg) fixed-dose combination (total 100 ml)
Other Names:
  • Maxigesic
Active Comparator: Preventive administration group
The preventive administration group will receive intravenous acetaminophen (1000 mg)/ibuprofen (300 mg) for 15 minutes when surgical site closure starts.
Drug: Acetaminophen/Ibuprofen fixed-dose combination
Intravenous administration of Acetaminophen (1000 mg)/Ibuprofen (300 mg) fixed-dose combination (total 100 ml)
Other Names:
  • Maxigesic

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
Total fentanyl consumption during 24 hours
Time Frame: Postoperative 24 hours
Postoperative fentanyl consumption (mcg) via IV patient controlled analgesia
Postoperative 24 hours

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
Total fentanyl consumption
Time Frame: Postoperative 2, 6, 48 hours
Postoperative fentanyl consumption (mcg) via IV patient controlled analgesia (PCA)
Postoperative 2, 6, 48 hours
Postoperative pain score
Time Frame: Postoperative 2 (resting only), 6, 24, 48 hours
11-pointed NRS pain score at resting/coughing NRS (0-10): 0,"no pain"; 10, "worst pain imaginable"
Postoperative 2 (resting only), 6, 24, 48 hours
Count of rescue analgesics administration
Time Frame: Postoperative 0-2, 2-6, 6-24, 24-48 hours
Number of count of rescue analgesics administered because of patient's request for additional analgesia than IV PCA
Postoperative 0-2, 2-6, 6-24, 24-48 hours
Opioid side effects
Time Frame: Postoperative 0-2, 2-6, 6-24, 24-48 hours
Incidence of opioid side effects like postoperative nausea/vomiting, hypotension, dizziness, somnolence and respiratory depression (%)
Postoperative 0-2, 2-6, 6-24, 24-48 hours
Quality of recovery-15
Time Frame: Postoperative 24 hours
Korean version of Quality of recovery-15 questionnaire (0-150): 0, "very poor recovery"; 150, "excellent recovery"
Postoperative 24 hours

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.
Seoul National University Hospital

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.
Kyongbo Pharmaceutical

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: Hojin Lee, PhD, Seoul National University Hospital

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.
February 10, 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.
February 28, 2025

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.
July 30, 2025

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).
January 5, 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.
January 5, 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.
January 17, 2023

Study Record Updates

Last Update Posted (Estimated)

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.
September 11, 2025

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.
September 4, 2025

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.
September 1, 2025

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.
  • Maxigesic_Pre

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

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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Conditions

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