About this trial
Patients undergoing spinal surgery require pain control medication after their surgery. Investigators have successfully used intravenous Methadone to manage pain after surgery. However, doctors in Canada do not have the intravenous form of Methadone to prescribe to their patients. The investigators in Canada propose a pilot trial to investigate whether Methadone administered rectally could be used to manage pain after spinal surgery.
The main questions are:
1. Are investigators able to recruit participants for this trial and learn from this study to plan a larger trial? 2. Does Methadone administered rectally during surgery, reduce participants' pain intensity, use less pain medication, and have a better recovery after surgery? Investigators will compare Methadone to a placebo (a look-alike substance that contains no drug) to see if Methadone works to manage pain after surgery better than the usual pain management.
Participants will:
* receive either Methadone or placebo during surgery. * be asked some questions about their pain during days 1 to 3 after surgery * be contacted by phone to ask about their recovery
At this time, the study aims to recruit 40 participants from St. Michael's Hospital, to learn whether it will be feasible to plan a larger study.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
18 to 65 years-old.
Elective spinal surgery with fusion of one or more sacral, lumbar, thoracic, and/or cervical levels
Capacity to provide informed consent
For participants of childbearing potential, use of contraception.
Disqualifiers
American Society of Anesthesiologists Physical Status > IV
Hypersensitivity to the active substance (methadone hydrochloride) or other opioid analgesics or to any ingredient in the formulation
Pregnant or nursing participants
Known or suspected mechanical gastrointestinal obstruction
Trial design
Parallel
Treatments tested in this trial
Rectal Methadone administer during spinal surgery
DrugRectal Methadone administered during spinal surgery for post-operative pain management
Placebo: Rectal saline solution
Other interventionPlacebo: Rectal saline solution single dose received during surgery
Treatment groups
Trial outcomes
Primary outcomes
Feasibility to recruit 40 participants into a trial of methadone and placebo
Recruitment rate (Acceptability and feasibility study)
Feasibility to recruit 40 participants into a trial of methadone and placebo
Withdrawal rate (Acceptability and feasibility study)
Secondary outcomes
Adverse outcomes
Rate of postoperative respiratory depression
Adverse outcomes
Rate of postoperative ileus
Opioid reduction
Total morphine equivalent used
Pain intensity after surgery
Patient-Reported Outcomes Measurement Information System Pain Interference (PROMIS) Pain Intensity, Pain intensity scale- 0 to 10 (The higher the number the higher the pain intensity)
Sponsors and contacts
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Unity Health Toronto
Lead sponsor
AFP Innovation Fund
Collaborator