New Literature Review/Meta-Analysis of ECT vs Ketamine

 Out on PubMed, from authors in Brazil and Texas, is this review:

Efficacy and adverse effects of ketamine versus electroconvulsive therapy for major depressive disorder: A systematic review and meta-analysis.

de A Simoes Moreira D, Gauer LE, Teixeira G, da Silva AC, Cavalcanti S, Quevedo J.J Affect Disord. 2023 Mar 10:S0165-0327(23)00324-5. doi: 10.1016/j.jad.2023.02.152. Online ahead of print.PMID: 36907464 Review.

The abstract is copied below:

Background: ECT is considered the fastest and most effective treatment for TRD. Ketamine seems to be an attractive alternative due to its rapid-onset antidepressant effects and impact on suicidal thoughts. This study aimed to compare efficacy and tolerability of ECT and ketamine for different depression outcomes (PROSPERO/CRD42022349220).

Methods: We searched MEDLINE, Web of Science, Embase, PsycINFO, Google Scholar, Cochrane Library and trial registries, which were the ClinicalTrials.gov and the World Health Organization's International Clinical Trials Registry Platform, without restrictions on publication date.

Selection criteria: randomized controlled trials or cohorts comparing ketamine versus ECT in patients with TRD.

Results: Eight studies met the inclusion criteria (of 2875 retrieved). Random-effects models comparing ketamine and ECT regarding the following outcomes were conducted: a) reduction of depressive symptoms severity through scales, g = -0.12, p = 0.68; b) response to therapy, RR = 0.89, p = 0.51; c) reported side-effects: dissociative symptoms, RR = 5.41, p = 0.06; nausea, RR = 0.73, p = 0.47; muscle pain, RR = 0.25, p = 0.02; and headache, RR = 0.39, p = 0.08. Influential & subgroup analyses were performed.

Limitations: Methodological issues with high risk of bias in some of the source material, reduced number of eligible studies with high in-between heterogeneity and small sample sizes.

Conclusion: Our study showed no evidence to support the superiority of ketamine over ECT for severity of depressive symptoms and response to therapy. Regarding side effects, there was a statistically significant decreased risk of muscle pain in patients treated with ketamine compared to ECT.

Keywords: ECT; Ketamine; MDD; Meta-analysis; Mood disorders; TRD.

Some of the text is copied below:

Here's a new literature review comparing ECT and ketamine. The role of ketamine in treating serious depression remains to be determined; let us remember the 80-plus-year history of ECT's efficacy and safety compared to the small, but accumulating, track record for ketamine. Literature reviews obviously do not reflect the clinical reality that urgently ill patients need to be referred for consideration of ECT without delay.


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