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Use of Ketamine in Patients with Multifactorial Neuropathic Pain: A Systematic Review and Meta-Analysis.

Alejandro Bruna-Mejias, Vicente Baeza, Javiera Gamboa, Belen Baez Flores, Jessica San Martin, Constanza Astorga, Javiera Leyton, Pablo Nova-Baeza, Mathias Orellana-Donoso, Alejandra Suazo-Santibañez, Alvaro Becerra-Farfán, Gustavo Oyanedel-Amaro, Juan Jose Valenzuela-Fuenzalida

Pharmaceuticals September 3, 2024 DOI: 10.3390/ph17091165 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Systematic review Peer reviewed
Population People with neuropathic pain
Intervention low doses of ketamine
Topics Ketamine Esketamine
Keywords Pharmacology Chronic pain Neuropathic pain/nerve pain/neuralgia/polyneuropathy Ketamine/ketalar/special k Clinical trials/medical research Pain management/pain treatment
Citations 4
Key findings Low doses of ketamine do not present statistically significant changes in pain reduction or functionality for neuropathic pain compared to placebo.

Abstract

Neuropathic pain (NP) is a heterogeneous group of conditions characterized by the experience of a number of sensory disturbances including pain, burning sensations, paroxysms of stabbing pain, dysesthesias, allodynia, and hyperalgesia. The above-mentioned sensations may occur in a specific dermatome area or other delimited region of the body. The objective of this review was to analyze the evidence for ketamine in multifactorial neuropathic pain. The research group systematically searched the databases MEDLINE (via PubMed), EMBASE, SCOPUS, the Cochrane Central Register of Controlled Trials, the Cumulative Index to Nursing and Allied Health Literature (Cinahl), and the Web of Science. The findings of this review show that different forms of low doses of ketamine (LDK) do not present statistically significant changes for any of the scales included. In this study, the total symptom score [standardized mean difference (SMD) = -3.59, confidence interval (CI) = -4.16 to -3.02, and p < 0.00001], neuropathy impairment score (SMD = -1.42, CI = -3.68 to 0.84, and p = 0.22), and neuropathy symptom checklist (SMD = -0.09, CI = -0.15 to -0.02, and p = 0.01) were taken into account. For finality compared to the use of a placebo, the findings suggest that LDK does not exhibit significant differences in terms of pain reduction and functionality. Moreover, no specific dosages are identified to support the use of LDK in the reduction in NP.

Comparable studies

Other systematic reviews and meta-analyses on ketamine, most cited first.

Study Year Design Participants
The effect of a single dose of intravenous ketamine on suicidal ideation: a systematic review and individual participant data meta-analysis Depressed patients with suicidal ideation at baseline 2017 Systematic review and individual participant data meta-analysis n = 167
Ketamine use: a review Ketamine users 2011 Systematic review
Ketamine and Other NMDA Antagonists: Early Clinical Trials and Possible Mechanisms in Depression Participants with major depression in placebo-controlled, double-blind, randomized... 2015 Systematic review and meta-analysis
Ketamine and postoperative pain – a quantitative systematic review of randomised trials Surgical patients from 25 countries 2004 Systematic review n = 2,839
Side-effects associated with ketamine use in depression: a systematic review. Patients with depression 2018 Systematic review

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