• Xinhua Shi, Juan Zhou, He Jiang, and Keqi Xie.
• Department of Anaesthesiology, Nanjing Gaochun People's Hospital, Nanjing Jiangsu, China.
• J Coll Physicians Surg Pak. 2024 Jan 1; 34 (1): 788578-85.

AbstractThis review was conducted to find the effectiveness and safety of ketamine in managing acute or sudden pain in the emergency scenarios. The research was carried out using databases such as PubMed, MEDLINE, Cochrane trial registries, and EMBASE from inception up to July 2022. The meta-analysis employed using the random-effects model and presented results as pooled standardised mean difference (SMD) and risk ratio (RR) alongside their 95% confidence intervals (CIs). The pooled SMD for pain assessment within 15 minutes stood at -0.72 (95% CI: -1.55 to 0.12). At 30 minutes, SMD was -0.27 (95% CI: -0.48 to -0.05), and by 45 minutes, it was -0.04 (95% CI: -0.26 to 0.18). Between the 45-minute and 60-minute mark, the SMD was -0.03 (95% CI: -0.22 to 0.17), and after the 60-minute interval, it was registered at 0.11 (95% CI: -0.10 to 0.22). Pooled RR reflecting the requirement for supplementary analgaesics was 0.96 (95% CI: 0.65-1.41). The study found that ketamine's efficacy and safety were comparable or even superior to opioids in addressing sudden pain in the emergency contexts. Key Words: Ketamine, Meta-analysis, Opioids, Acute pain, Emergency.

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