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The guidelines on pharmacotherapy for cancer-related pain advocate active measures against the adverse effects of opioids to increase adherence to medication. However, preventative therapy for the management of nausea and vomiting has not been specified. This study aimed to verify the effects of prophylactic anti-emetics in preventing opioid-induced nausea and vomiting. We conducted a retrospective analysis of cases at our hospital in which oral opioids or patches were initiated for the management of pain due to malignant tumours from January 2017 to September 2019. Strong opioids were initiated for 349 patients; of these, data for 298 patients were analysed. A total of 193 patients were on anti-emetic prophylaxis. We found that the group that did not receive anti-emetic prophylaxis was significantly more likely to be prescribed an additional anti-emetic. Prophylactic administration of anti-emetics at the time of initiating opioid analgesics may reduce gastrointestinal toxicity. Copyright© 2021, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved.


Tomoki Tamura, Keita Kawakado, G O Makimoto, Masamoto Nakanishi, Shoichi Kuyama. Effect of Prophylactic Anti-emetics on Opioid-induced Nausea and Vomiting: A Retrospective Observational Cohort Study. In vivo (Athens, Greece). 2021 May-Jun;35(3):1737-1742

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PMID: 33910857

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