NCT05685342

Brief Summary

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.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
154

participants targeted

Target at P75+ for not_applicable postoperative-pain

Timeline
Completed

Started Feb 2023

Longer than P75 for not_applicable postoperative-pain

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

January 5, 2023

Completed
12 days until next milestone

First Posted

Study publicly available on registry

January 17, 2023

Completed
24 days until next milestone

Study Start

First participant enrolled

February 10, 2023

Completed
2.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 28, 2025

Completed
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

July 30, 2025

Completed
Last Updated

September 11, 2025

Status Verified

September 1, 2025

Enrollment Period

2.1 years

First QC Date

January 5, 2023

Last Update Submit

September 4, 2025

Conditions

Keywords

Postoperative Pain

Outcome Measures

Primary Outcomes (1)

  • Total fentanyl consumption during 24 hours

    Postoperative fentanyl consumption (mcg) via IV patient controlled analgesia

    Postoperative 24 hours

Secondary Outcomes (5)

  • Total fentanyl consumption

    Postoperative 2, 6, 48 hours

  • Postoperative pain score

    Postoperative 2 (resting only), 6, 24, 48 hours

  • Count of rescue analgesics administration

    Postoperative 0-2, 2-6, 6-24, 24-48 hours

  • Opioid side effects

    Postoperative 0-2, 2-6, 6-24, 24-48 hours

  • Quality of recovery-15

    Postoperative 24 hours

Study Arms (2)

Preemptive administration group

EXPERIMENTAL

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

Preventive administration group

ACTIVE COMPARATOR

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

Interventions

Intravenous administration of Acetaminophen (1000 mg)/Ibuprofen (300 mg) fixed-dose combination (total 100 ml)

Also known as: Maxigesic
Preemptive administration groupPreventive administration group

Eligibility Criteria

Age19 Years - 80 Years
Sexmale
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • 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

You may not qualify if:

  • 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

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Seoul National University Hospital

Seoul, Seoul, KS013, South Korea

Location

MeSH Terms

Conditions

Pain, Postoperative

Interventions

AcetaminophenIbuprofen

Condition Hierarchy (Ancestors)

Postoperative ComplicationsPathologic ProcessesPathological Conditions, Signs and SymptomsPainNeurologic ManifestationsSigns and Symptoms

Intervention Hierarchy (Ancestors)

AcetanilidesAnilidesAmidesOrganic ChemicalsAniline CompoundsAminesPhenylpropionatesAcids, CarbocyclicCarboxylic Acids

Study Officials

  • Hojin Lee, PhD

    Seoul National University Hospital

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
An investigator who is not involved in this study randomly allocates the group and another investigator who dose not evaluate clinical endpoints keeps the result of allocation in a sealed envelope. On the day of study, the second investigator opens the envelope to check allocation and sends a drug and normal saline in identical looking bottles with label only indicating the order of administration.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: A prospective randomized double-blinded study
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

January 5, 2023

First Posted

January 17, 2023

Study Start

February 10, 2023

Primary Completion

February 28, 2025

Study Completion

July 30, 2025

Last Updated

September 11, 2025

Record last verified: 2025-09

Locations