An interventional study of Opiranserin+Acetaminophen and Acetaminophen+NSAIDs in Cholecystectomy, Laparoscopic and Cholecystectomy, Robotic, sponsored by Gangnam Severance Hospital. Recruiting at 2 sites in South Korea. Open to participants aged 19 Years and older. Per ClinicalTrials.gov, last updated 2026-06-18.
Sponsored by Gangnam Severance Hospital · Not applicable, Interventional, and Treatment
The purpose of this study is to evaluate whether the combination therapy of opiranserin and acetaminophen is non-inferior to the combination of non-steroidal anti-inflammatory drugs (NSAIDs) and acetaminophen for postoperative pain management after minimally invasive cholecystectomy.
This is a single-center, randomized, controlled, non-inferiority clinical trial in adult patients undergoing minimally invasive cholecystectomy. Participants will be randomly assigned to either the Treatement group (opiranserin + acetaminophen) or the control group (NSAIDs + acetaminophen) in a 1:1 ratio to compare the analgesic efficacy and safety between the two analgesic regimens.
Gangnam Severance Hospital is the lead sponsor of 146 studies on the registry; 38 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
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.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECG (electrocardiogram)
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
QT and QTc
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
In the Opiranserin+Acetaminophen group, opiranserine 1000mg infusion will be provided over 10 hr. IV Acetaminophen 1g will be provided q 8h until 24 h potperatively.
Drug: Opiranserin+Acetaminophen
In the Acetaminophen+NSAIDs group, Normal saline 500 ml will be provided over 10hr. IV Acetaminophen 1g and ibuprofen 300mg will be provided q 8h until 24 h potperatively.
Drug: Acetaminophen+NSAIDs
Drug pages: GlyT2/5HT2A Antagonist VVZ-149 · Acetaminophen
In the Opiranserin+Acetaminophen group, opiranserine 1000mg infusion will be provided over 10 hr. Opiranserin infusion will be started after the indduction of anesthesia. After laoding dose (160mg ) over 30 minutes, maintenace dose (840mg) will be infused over 9hr 30min. IV Acetaminophen 1g will be provided q 8h until 24 h potperatively.
Also known as: Arm I
Drug pages: Acetaminophen · Anti-Inflammatory Agents, Non-Steroidal
In the Acetaminophen+NSAIDs group, Normal saline 500 ml will be provided over 10hr. IV Acetaminophen 1g and ibuprofen 300mg will be provided q 8h until 24 h potperatively.
Also known as: Arm II
Area under the curve of the pain score at rest through 12 hours (NRS·h)
Area under the curve of the numeric rating scale pain score at rest through 12 hours (Numerical Rating Scale·h), Pain score will be assess with the numerical rating scale (NRS), ranging from 0 (0, no pain) to 10 (maximum, worst pain), higher scores indicate greater pain intensity.
Time frame: Until 12 hours postoperatively
Area under the curve of the pain score at rest through 24 hours
Area under the curve of the numeric rating scale pain score at rest through 24 hours. Area under the curve of the numeric rating scale pain score at rest through 24 hours (Numerical Rating Scale·h), Pain score will be assess with the numerical rating scale (NRS), ranging from 0 (0, no pain) to 10 (maximum, worst pain), higher scores indicate greater pain intensity.
Time frame: until 24hours postoperatively
opioid consumption
Time frame: until 24hours postopratively
pain at rest
numeric rating scale pain score at rest, Pain score will be assess with the numerical rating scale (NRS), ranging from 0 (0, no pain) to 10 (maximum, worst pain), higher scores indicate greater pain intensity.
Time frame: at 0.5, 2, 4, 6, 12, 18, 24hours postoperatively
pain during movement
numeric rating scale pain score during movement Pain score will be assess with the numerical rating scale (NRS), ranging from 0 (0, no pain) to 10 (maximum, worst pain), higher scores indicate greater pain intensity.
Time frame: at 0.5, 2, 4, 6, 12, 18, 24hours postoperatively
time to first rescue analgesics
time to first rescue analgesic requirements
Time frame: until 24hours
incidence of nausea, vomiting
incidence of nausea, vomiting during postoperative 24 hours
Time frame: until 24hours
nausea severity
severity of nausea using 0-10 numeric rating scale Nausea severity will be assess with the numerical rating scale (NRS), ranging from 0 (0, no nausea) to 10 (maximum, worst nausea), higher scores indicate greater nausea severity.
Time frame: until 24hours
patient satisfaction
patient satisfaction regarding pain management asked at 24 hours postoperatively, using 0-10 scale Patient satisfaction will be assessd with the numerical rating scale (NRS), ranging from 0 (0, totally unsatisfied) to 10 (maximum, totally satisfied), higher scores indicate greater patient satisfaction.
Time frame: 24hours postoperatively
hospital length of stay
length of hospitalization
Time frame: until discharge, about 1-7 days
Quality of Recovery
Questionnaire of 15-item Quality of Recovery (QoR-15). Each item is scored on an 11-point numerical rating scale from 0 to 10. Total score range: Minimum 0 to maximum 150. Higher values indicate a better quality of postoperative recovery.
Time frame: 24hours postoperatively
Plan to share: No
No publications or documents are linked to this record.
Started Jun 2026 (actual). Primary completion is estimated for May 2028, 23 months after the start.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Studies of the drugs tested here: GlyT2/5HT2A Antagonist VVZ-149 · Acetaminophen