Journal
PAIN PRACTICE
Volume 18, Issue 3, Pages 350-359Publisher
WILEY
DOI: 10.1111/papr.12611
Keywords
persistent postoperative pain; IMMPACT criteria; breast surgery; lidocaine
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Funding
- Northwestern Memorial Foundation-Evergreen Invitational Women's Health Grants
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ObjectiveTo compare the incidence in postsurgical persistent pain following breast cancer surgery in women receiving intravenous lidocaine compared to saline using validated pain instruments in accordance with the Initiative on Methods, Measurement, and Pain Assessment in Clinical Trials (IMMPACT) recommendations. MethodsThe study was a randomized, double-blinded, placebo-controlled, clinical trial. Subjects were randomized into Group 1 (1.5mg/kg bolus of intravenous lidocaine followed by a 2mg/kg/hour infusion) or Group 2 (normal saline at the same bolus and infusion rate). Patients were evaluated at 3 and 6months for the presence of chronic persistent postsurgical pain. ResultsOne hundred forty-eight patients were included in the study analysis. There were no differences in quality of recovery, pain burden, or opioid consumption between groups at 24hours. Pain (yes/no) at 6months attributed to surgery was reported in 29% of Group 2 vs. 13% of Group 1 patients (P=0.04); however, only 3 subjects (5%) in Group 1 and 2 subjects (3%) in Group 2 met IMMPACT criteria for persistent postoperative pain (P=0.99). DiscussionPerioperative infusion of lidocaine has been reported to decrease the incidence of postsurgical pain at 3 and 6months following mastectomy using dichotomous (yes/no) scoring. Although intravenous lidocaine reduced the reported incidence of pain at rest at 6months, pain with activity, pain qualities, and the physical or emotional impact of the pain were unaffected. Future studies evaluating postsurgical persistent pain should adhere to the IMMPACT recommendations in order to more accurately describe the effect of an intervention on persistent pain.
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