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  • Title: Comparative efficacy and safety of glycerol versus mannitol in patients with cerebral oedema and elevated intracranial pressure: A systematic review and meta-analysis.
    Author: Wang J, Ren Y, Wang SF, Kan LD, Zhou LJ, Fang HM, Fan H.
    Journal: J Clin Pharm Ther; 2021 Apr; 46(2):504-514. PubMed ID: 33217016.
    Abstract:
    WHAT IS KNOWN AND OBJECTIVE: Glycerol is thought to be superior to mannitol in the treatment of cerebral oedema and elevated intracranial pressure (ICP), particularly with safety concerns. However, the current evidence remains insufficient. Therefore, we aimed to compare the efficacy and safety of glycerol versus mannitol in this meta-analysis. METHODS: PubMed, EMBASE, Web of Science, CENTRAL, China National Knowledge Infrastructure, Wanfang Database, Chongqing VIP information, ClinicalTrials.gov, and the reference lists of relevant articles were searched for randomized controlled trials comparing glycerol and mannitol in patients with brain oedema and elevated ICP. Two investigators independently identified the articles, assessed the study quality and extracted data. Data analyses were performed using RevMan software. RESULTS AND DISCUSSION: Thirty trials involving 3144 patients met our inclusion criteria. Pooled data indicated that glycerol and mannitol had comparable effectiveness in controlling cerebral oedema (RR, 1.00; 95% CI, 0.97 to 1.03; p = .97), but the risks of acute kidney injury and electrolyte disturbances were significantly lower with glycerol (RR, 0.21; 95% CI, 0.16 to 0.27 and RR, 0.23; 95% CI, 0.17 to 0.30, respectively) than mannitol. Moreover, there seemed to be a lower probability of rebound ICP after the withdrawal of glycerol. Neither haemolysis nor elevated blood glucose levels were observed in the glycerol group. WHAT IS NEW AND CONCLUSION: Regarding the balance between efficacy and safety, glycerol could be an effective and more tolerable alternative therapy for cerebral oedema and elevated ICP than mannitol, especially for high-risk populations of renal failure.
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