Ketamine and Neuropathic Pain

Abstract

The primary outcome is to compare the analgesic efficacy of intravenous ketamine treatment to that of a placebo in patients with refractory neuropathic pain. The secondary outcomes are: 1. \- To compare the additive analgesic efficacy of prior administration of magnesium sulfate to that of placebo and ketamine only, on the effectiveness of intravenous ketamine treatment, 2. \- To study the evolution time of pain and analgesia after the intravenous administration of ketamine and placebo, 3. \- To study the correlation of the analgesic response to administered products respectively ketamine, ketamine and magnesium sulfate, placebo.

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