What are the types of chemotherapy-induced nausea and vomiting (CINV)?

Updated: May 31, 2018
  • Author: Winston W Tan, MD, FACP; more...
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Answer

Answer

Treatment recommendations are based on four types of chemotherapy-induced nausea and vomiting (CINV), as follows:

  • Acute: Onset of emesis within a few minutes to several hours after chemotherapy is administered and usually peaking in the first 4-6 hours
  • Delayed: Onset of emesis more than 24 hours after chemotherapy is administered
  • Anticipatory: Onset of emesis prior to chemotherapy administration as a conditioned response in patients who have experienced emesis during a previous cycle of chemotherapy
  • Breakthrough/refractory: Emesis despite prophylactic/breakthrough medications

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