Improvements in antiemetic therapy constitute a major advance in oncology. A recent poll of the oncology community by the American Society of Clinical Oncology ranked it as one of the top 5 advances in cancer in the last 50 years.1 Emetogenicity of chemotherapy is defined by risk of emesis in the patient given no antiemetics; high-risk regimens cause nausea and vomiting in >90% of patients, moderate risk in 30%-90%, and low risk in <30%.
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