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Chemotherapy-induced nausea and vomiting (CINV) is a common side-effect of many cancer treatments. Nausea and vomiting are two of the most feared cancer treatment-related side effects for cancer patients and their families. In 1983, Coates et al. found that patients receiving chemotherapy ranked nausea and vomiting as the first and second most severe side effects, respectively. Up to 20% of patients receiving highly emetogenic agents in this era postponed, or even refused, potentially curative treatments. Since the 1990s, several novel classes of antiemetics have been developed and commercialized, becoming a nearly universal standard in chemotherapy regimens, and helping to better manage these symptoms in a large portion of patients. Efficient mediation of these unpleasant and sometimes crippling symptoms results in increased quality of life for the patient, and better overall health of the patient, and, due to better patient tolerance, more effective treatment cycles. ==Types== There are several subtypes of CINV. The classifications of nausea and vomiting are:〔() "Chemotherapy-Induced Nausea and Vomiting"〕 *Acute: occurring within 24 hours of chemotherapy *Delayed: occurring between 24 hours and 5 days after treatment *Breakthrough: occurring despite prophylactic treatment *Anticipatory: triggered by taste, odor, memories, visions, or anxiety related to chemotherapy *Refractory: occurring during subsequent cycles when antiemetics have failed in earlier cycles 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chemotherapy-induced nausea and vomiting」の詳細全文を読む スポンサード リンク
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