Cannabis before surgery: what really happens?
NCT ID NCT07582445
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study follows 600 people having elective surgery to see how cannabis use affects their pain, nausea, anxiety, sleep, and need for painkillers. Researchers will compare cannabis users to non-users and check if patients' self-reported use matches blood and urine tests. The goal is to better understand how cannabis impacts surgery outcomes and how accurately people report their use.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 600 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2026
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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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.
Who is studied
The study population will consist of patients scheduled to undergo elective surgery. This will include individuals who regularly use cannabis, as well as a matched control cohort with similar demographics who do not use cannabis.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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: * Patients who use cannabis and are scheduled to undergo elective surgery. * A matched control cohort of patients with similar demographics who are also scheduled for elective surgery. Exclusion Criteria: None
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Hadassah Medical Center
Jerusalem, 9210141, Israel