About this trial
Phase III, international multicentre, parallel group, blinded, 1:1 randomized controlled trial to determine the effect of an intraoperative intravenous lidocaine infusion on reducing the development of persistent pain 3-months after breast cancer surgery.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age ≥18 years old
Undergoing a unilateral or bilateral lumpectomy or mastectomy, inclusive of all pathologies, including prophylactic surgery (e.g., family history or BRCA gene mutation)
Disqualifiers
Previous breast surgery within 6 months of index surgery
Undergoing any autologous flap procedure during index surgery
Presence known chronic pain disorder involving surgical site or ipsilateral chest wall, shoulder, or arm during the 3-months prior to index surgery
Documented hypersensitivity or allergy to lidocaine
Trial design
Parallel
Treatments tested in this trial
Lidocaine 20mg/ml
DrugPatients in the intervention group will receive an IV lidocaine infusion using a dosage regimen of 1.5 mg/kg bolus of a 2% lidocaine solution with induction of general anesthesia followed by a 2.0 mg/kg/hour infusion until the end of surgery (and up to 30 minutes into recovery room).
Placebo
DrugPatients in the control group will receive a placebo bolus and infusion with normal saline (0.9% sodium chloride solution) until the end of surgery (and up to 30 minutes into recovery room).
Treatment groups
Trial outcomes
Primary outcomes
Development of persistent pain 3-months after breast cancer surgery
Persistent pain at 3-months
Secondary outcomes
Pain intensities
Pain intensities measured on the Numeric Rating Scale (NSR) at rest and movement.
Opioid consumption
Morphine-equivalent opioid consumption
Moderate-to-severe persistent pain
Defined as persistent pain with an NRS pain score of ≥4 at rest 24-hours
Persistent neuropathic pain
Measured using the Douleur Neuropathique 4-symptoms interview
Sponsors and contacts
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University Health Network, Toronto
Lead sponsor
Canadian Institutes of Health Research (CIHR)
Collaborator