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  • Title: Incidence and predictors of anticipatory nausea and vomiting in Asia Pacific clinical practice--a longitudinal analysis.
    Author: Chan A, Kim HK, Hsieh RK, Yu S, de Lima Lopes G, Su WC, Baños A, Bhatia S, Burke TA, Keefe DM.
    Journal: Support Care Cancer; 2015 Jan; 23(1):283-91. PubMed ID: 25112561.
    Abstract:
    PURPOSE: Some patients experience nausea and/or vomiting (NV) before receipt of chemotherapy. Our objective was to evaluate the impact of prior chemotherapy-induced NV (CINV) on the incidence of anticipatory NV in later cycles. METHODS: This multicenter, prospective non-interventional study enrolled chemotherapy-naïve adults scheduled to receive highly or moderately emetogenic chemotherapy (HEC/MEC) for cancer in six Asia Pacific countries, excluding those with emesis within 24 h before cycle 1 chemotherapy. On day 1 before chemotherapy, patients answered four questions regarding emesis in the past 24 h, nausea, expectation of post-chemotherapy nausea, and anxiety in the past 24 h, the latter three scored from 0-10 (none-maximum). Multivariate logistic regression was used to assess the impact of prior CINV on anticipatory NV in cycles 2 and 3. RESULTS: Five hundred ninety-eight patients (59% female) were evaluable in cycle 2 (49% HEC, 51% MEC). The incidence of anticipatory emesis was low before cycles 2 and 3 (1.5-2.3%). The incidence of clinically significant anticipatory nausea (score of ≥3) was 4.8, 7.9, and 8.3% before cycles 1, 2, and 3, respectively, with adjusted odds ratio (OR), 3.95 (95% confidence interval (CI), 2.23-7.00; p < 0.001) for patients with clinically significant nausea in prior cycles, compared with none. The adjusted ORs for other anticipatory NV endpoints ranged from 4.54-4.74 for patients with prior CINV. The occurrence of clinically significant anxiety in the prior cycle also resulted in a significantly increased likelihood of anticipatory nausea. CONCLUSIONS: These findings highlight the importance of preventing CINV in cycle 1 to reduce anticipatory NV in subsequent cycles.
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