Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Δευτέρα 29 Ιανουαρίου 2018

Efficacy and Safety of Lidocaine Infusion Treatment for Neuropathic Pain: A Randomized, Double-Blind, and Placebo-Controlled Study

Background and Objectives Lidocaine infusion therapy (LIT) is an effective treatment for relieving neuropathic pain (NeP). However, it remains unclear whether pain relief can be sustained through repeated lidocaine infusions. This study aimed to determine whether repeated intravenous administration of low-dose lidocaine could provide prolonged pain relief in patients with specific NeP conditions. Methods This is a prospective, randomized, double-blind, placebo-controlled, parallel study. We compared the efficacy and safety of lidocaine infusions (3 mg/kg) in the LIT group and normal saline infusions in the control group once a week for 4 consecutive weeks in patients with postherpetic neuralgia or complex regional pain syndrome type II. The primary outcome was the difference in the percentage change in the 11-point numerical rating scale (NRS) pain score from baseline to after the final infusion. Secondary outcomes included pain scores during 4 weeks of follow-up and any complications. Results Forty-two patients completed this study protocol. The percentage reduction in NRS pain scores after the final infusion was significantly greater in the LIT group compared with the control group (P = 0.011). However, this pain reduction was not detectable at the 4-week follow-up. The difference in the percentage change in NRS pain scores was especially prominent in the LIT group after the third and fourth infusions. None of the study participants experienced serious complications from the treatment. Conclusions Lidocaine infusion therapy (3 mg/kg of lidocaine administered over 1 hour) provided effective short-term pain relief, which was substantially prominent after repeated infusions were administered to patients with refractory NeP. Clinical Trial Registration This study was registered at ClinicalTrials.gov, identifier NCT02597257. Accepted for publication September 2, 2017. Address correspondence to: Jee Youn Moon, MD, PhD, FIPP, CIPS, Department of Anesthesiology and Pain Medicine, Seoul National University Hospital College of Medicine, 110 Daehang-ro, Jongno-gu, Seoul 110-744, Korea (e-mail: jymoon0901@gmail.com). This research was supported by a grant (14172MFDS178) from Korean Ministry of Food and Drug Safety in 2014. The agency was not involved in conduct of this study or its submission. The authors declare no conflict of interest. Y.-C.K., A.M.C., and C.-S.L. contributed equally to this study. Copyright © 2018 by American Society of Regional Anesthesia and Pain Medicine.

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