Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 12/15/2025

Chemotherapy-Induced Emesis

Phases of Chemotherapy-Induced Emesis

  • The National Comprehensive Cancer Network recommends that acute emesis typically occurs within the first 24 hours after chemotherapy administration, with a peak intensity after 5-6 hours, and is influenced by factors such as female sex, age under 50, and alcohol consumption 1, 2
  • The intensity of acute emesis reaches its peak typically after 5-6 hours, and risk factors include female sex, age under 50, and history of motion sickness 2, 3
  • The American College of Physicians and other medical organizations agree that delayed emesis develops more than 24 hours after chemotherapy administration, often after treatment with Cisplatin, Carboplatin, Cyclophosphamide, and/or Doxorubicin, and can last up to 6-7 days 2, 4
  • The National Comprehensive Cancer Network states that delayed emesis is more common than acute emesis, often more severe, and tends to be more resistant to therapy, with a peak intensity 48-72 hours after Cisplatin administration 1, 4

Risk Factors and Predictors of Emesis

  • Younger female patients receiving chemotherapy for breast cancer are more prone to nausea than other patient groups, according to the National Comprehensive Cancer Network 2, 5

Emetogenic Potential of Chemotherapeutic Agents

  • The frequency of chemotherapy-induced emesis depends primarily on the emetogenic potential of the specific chemotherapeutic agents, which are classified into four levels of risk: high, moderate, low, and minimal, as defined by the National Comprehensive Cancer Network 1, 4, 5
  • High emetogenic risk is defined as 90% or more of patients experiencing acute emesis, moderate risk as 30-90%, low risk, and minimal risk, with corresponding percentages of patients experiencing emesis 5

Pathophysiology and Neurotransmitters

  • Various neurotransmitters are involved in emesis, including serotonin (5-HT3), dopamine, acetylcholine, corticosteroids, histamine, cannabinoids, opioids, and neurokinin-1 (NK-1), as stated by the National Comprehensive Cancer Network 3, 6

Emetogenicity of Oxaliplatin

Emetogenic Classification

  • Oxaliplatin is classified as a moderate-emetic-risk (MER) agent by major guideline organizations, including the American Society of Clinical Oncology (ASCO) and the Multinational Association of Supportive Care in Cancer (MASCC), with a 30-90% risk of causing nausea and vomiting without prophylactic antiemetics 7, 8
  • The ASCO 2017 guidelines specifically identify oxaliplatin as a moderate-emetic-risk agent known to cause delayed nausea and vomiting 7
  • For oxaliplatin monotherapy or standard FOLFOX regimens, the American Society of Clinical Oncology recommends using a two-drug combination: a 5-HT₃ receptor antagonist on day 1 and dexamethasone on day 1 7
  • Because oxaliplatin causes delayed nausea and vomiting, the American Society of Clinical Oncology suggests considering extending dexamethasone to days 2-3 7

Individual Risk Factor Considerations

  • Patient-specific factors that increase emetogenic risk include previous chemotherapy-induced nausea and vomiting, according to the European Society for Medical Oncology 9
  • For patients with multiple risk factors receiving oxaliplatin, the European Society for Medical Oncology recommends strongly considering escalating to a three-drug regimen, adding an NK₁ receptor antagonist to the 5-HT₃ antagonist and dexamethasone 10, 9

Critical Pitfalls to Avoid

  • The European Society for Medical Oncology advises against withholding more effective antiemetics for "rescue" use, as antiemetics are most effective when used prophylactically 11
  • The American Society of Clinical Oncology recommends not assuming single-day dexamethasone is sufficient, as oxaliplatin specifically causes delayed emesis, warranting consideration of days 2-3 dexamethasone 7
  • The American Society of Clinical Oncology suggests screening for nausea and vomiting at every outpatient visit to identify inadequate control early 12

REFERENCES

1

antiemesis. clinical practice guidelines in oncology. [LINK]

Journal of the National Comprehensive Cancer Network : JNCCN, 2009

2

antiemesis. [LINK]

Journal of the National Comprehensive Cancer Network : JNCCN, 2012

3

antiemesis. [LINK]

Journal of the National Comprehensive Cancer Network : JNCCN, 2012

4

antiemesis. clinical practice guidelines in oncology. [LINK]

Journal of the National Comprehensive Cancer Network : JNCCN, 2009

5

antiemesis. [LINK]

Journal of the National Comprehensive Cancer Network : JNCCN, 2012

6

antiemesis. [LINK]

Journal of the National Comprehensive Cancer Network : JNCCN, 2012