Could ketamine and lidocaine replace opioids for Post-Surgery pain?
NCT ID NCT07213687
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This completed study tested whether a combination of low-dose ketamine and lidocaine can control pain after gynecologic surgery as well as the opioid fentanyl, but with fewer side effects. Seventy adult women undergoing elective surgery were randomly assigned to receive either the ketamine-lidocaine combo or fentanyl during anesthesia. Researchers measured pain scores, nausea, vomiting, and recovery quality up to 24 hours after surgery.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- low-dose ketamine and lidocaine
- What this could lead to
- If effective, this drug combination could offer a way to manage post-surgery pain with fewer opioid-related side effects like nausea.
- What could go wrong
- This is a small, single-center trial with only 70 participants. Results may not apply to other surgeries or populations, and the combination may not outperform fentanyl.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
-
70 people
The number who actually took part.
- Started
-
Jun 2023
- Finished
-
Aug 2024
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 65 years
- Sex
-
Female participants only
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * ASA I and II patients between the ages of 18 and 65 undergoing elective gynecologic surgery under general anaesthesia Exclusion Criteria: * Patients with allergies to any of the drugs used in the trial Patients with chronic pain Patients who are diagnosed with CNS diseases like psychiatric diseases, epilepsy Patients who are hypertensive and taking beta blockers, as well as those who have preoperative bradycardia, hypotension, or any type of heart block, Breastfeeding and pregnant women Patients weighing less than 40 kg or obese patients (BMI \> 35 kg/m2) Patients with a history of smoking
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Postoperative nausea and vomiting are added.
Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Dilla University
Awasa, Snnpr, 13, Ethiopia
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Two nerve blocks go head to head for chest surgery pain
- Can a Nurse's confidence ease a Patient's postoperative pain?
- Antidepressant may double as pain reliever after gallbladder surgery
- Nerve blocks put to the test for breast surgery pain
- A Non-Opioid pain drug takes aim at Surgery's opioid problem
- Can a nerve block stop pain months after hysterectomy?