Background: Chemotherapy-induced nausea and vomiting (CINV) is the most common non-haematological toxicity of chemotherapy.
Methods: A systematic review and meta-analysis comparing short course (1-2 days) with long course (3+ days) dexamethasone in preventing CINV was performed in accordance with the PRISMA statement.
Results: 1535 articles were screened to identify the 11 studies included in the review. Nine studies of 1892 patients were included in meta-analysis. There was no significant difference in complete response of nausea and vomiting between a short or long course of dexamethasone (RR 0.98, 95 % CI 0.89-1.07, p = 0.58). There was a lower risk of adverse events with a short course of dexamethasone (RR 0.80, 95 % CI 0.64-0.99, p = 0.04).
Conclusion: There was no significant difference between a short or long course of dexamethasone in preventing nausea or vomiting, but a short course was associated with fewer adverse effects. PROSPERO protocol: CRD42019133785.
Keywords: Chemotherapy-induced nausea and vomiting; Corticosteroids; Dexamethasone; Meta-analysis; NK1 inhibitors; Systematic review.
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