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Nerve block may cut opioid use after heart bypass

NCT ID NCT07732465

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 29, 2026 · Last updated Jul 30, 2026 · Updated 1 time

Summary

This trial tests whether a targeted nerve block, called an adductor canal block, can reduce leg pain after coronary artery bypass grafting (CABG) when a leg vein is used as a graft. About 120 adults scheduled for CABG will receive either the block with a numbing medication or a sham injection. Researchers will measure leg pain at rest over the first 24 hours and track total opioid use for 48 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
a nerve block injection with bupivacaine and dexmedetomidine
What this could lead to
If effective, this nerve block could offer a simple way to ease leg pain after heart bypass surgery and reduce reliance on opioid painkillers.
What could go wrong
This is a mid-stage trial with 120 participants, so results may not apply to all patients. The block carries small risks like infection or allergic reaction.

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 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

About 120 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Aug 2026

An estimate. Start dates often move.

Expected to finish

Dec 2027

An estimate. End dates often move.

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 110 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show 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: * Planned CABG with unilateral or bilateral great saphenous vein (GSV) harvesting, without concomitant valve surgery * Age ≥ 18 years * Ability to understand the protocol and provide written informed consent * ASA physical status I-IV Exclusion Criteria: * Refusal to participate in the study or inability to provide written informed consent * Contraindication to adductor canal block (e.g., local infection, allergy to local anesthetics) * Pre-existing chronic pain associated with chronic use of analgesic medications other than acetaminophen * Pre-existing peripheral neuropathy affecting the leg * Participation in two other interventional studies at the Montreal Heart Institute * Endoscopic vein harvesting performed by the surgical team instead of open saphenectomy technique

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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.

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Montreal Heart Institute

    Montreal, Quebec, H1T 1C8, Canada

More trials for these conditions

Other studies related to the condition(s) this trial covers.