NCT06525740 · Mayo Clinic
Methadone Versus Intrathecal Hydromorphone for Postoperative Pain Relief in Gynecologic Cancer Undergoing Surgery
What this study is about
This phase IV trial compares methadone versus hydromorphone given in the fluid-filled space between the thin layers of tissue that cover the brain and spinal cord (intrathecal) for postoperative pain relief in patients with gynecologic cancer undergo surgery. Methadone binds to opioid receptors in the central nervous system and is a long-acting opioid pain medication.
View original scientific description
This phase IV trial compares methadone versus hydromorphone given in the fluid-filled space between the thin layers of tissue that cover the brain and spinal cord (intrathecal) for postoperative pain relief in patients with gynecologic cancer undergo surgery. Methadone binds to opioid receptors in the central nervous system and is a long-acting opioid pain medication. Intrathecal hydromorphone works by changing the way the brain and nervous system respond to pain and is similar to an epidural. This trial may help researchers determine if methadone works as well as intrathecal hydromorphone for pain relief after surgery in patients with gynecologic cancer.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Undergoing surgery with a laparotomy for gynecologic malignancy
- Planned inpatient admission greater than 24 hours
Exclusion criteria
- Chronic pain requiring greater than 20 morphine milligram equivalents of opioid medications as an outpatient
- Prolonged corrected QT interval (QTc) \> 500ms
- Chronic kidney disease with estimated glomerular filtration rate (eGFR) \< 30 milliliters per minute (mL/min)
- Documented cirrhosis
- Preoperative platelets (PLT) \< 100
- Preoperative international normalized ratio (INR) \> 1.1
- Inappropriate cessation of anticoagulation medications prior to surgery
- Intolerance to hydromorphone or methadone
- Contraindication to administration of liposomal bupivacaine
- Subsequent surgeries after index surgery
Where
- Rochester, Minnesota
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Mar 4, 2026 · Source of record for eligibility and locations