Management of Nausea

Initial Assessment and Causes

Nausea can result from multiple causes including gastrointestinal disorders, vestibular dysfunction, brain metastases, electrolyte imbalances, medications, gastroparesis, and psychophysiologic factors, according to the National Comprehensive Cancer Network 1, 2
Consider ruling out other potential causes such as partial bowel obstruction, electrolyte abnormalities, medication side effects, and anxiety before initiating treatment, as recommended by the National Comprehensive Cancer Network 1
Distinguish between nausea and heartburn; consider antacid therapy if heartburn is suspected, as suggested by the National Comprehensive Cancer Network 3

Metoclopramide is recommended as first-line for management of chronic nausea, including opioid-related nausea, by the Journal of Clinical Oncology 4
Haloperidol effectively targets dopaminergic pathways for nausea management, according to the World Journal of Emergency Surgery 2
Palonosetron may be preferred for high-risk situations due to its longer duration of action, as noted by the National Comprehensive Cancer Network 1

For patients with previous episodes of opioid-induced nausea, prevention with metoclopramide around the clock for the first few days is recommended, by the Journal of Clinical Oncology 4
Tolerance to opioid-induced nausea typically develops within a few days, according to the Journal of Clinical Oncology 4
Lorazepam can be effective for anticipatory nausea, as suggested by the National Comprehensive Cancer Network 1, 3
Behavioral therapy techniques such as guided imagery may be helpful for anticipatory nausea, according to the National Comprehensive Cancer Network 3

5-HT3 antagonists are preferred agents for preventing radiation-induced vomiting, as recommended by the National Comprehensive Cancer Network 3
For upper abdominal radiation, ondansetron or granisetron with or without dexamethasone is recommended, by the National Comprehensive Cancer Network 3

For refractory nausea, consider adding a second agent when first-line medications fail to control symptoms, as suggested by the World Journal of Emergency Surgery 2
Combining agents with different mechanisms of action may provide synergistic effects, according to the World Journal of Emergency Surgery 2

Eating food at room temperature may help alleviate nausea, as noted by the National Comprehensive Cancer Network 1
Consider dietary consultation for persistent nausea, as recommended by the National Comprehensive Cancer Network 1

Alternative first-line treatment includes metoclopramide, particularly effective for chronic or opioid-related nausea, as recommended by the Journal of Clinical Oncology 4
For refractory cases, add a second agent with a different mechanism of action, as suggested by the World Journal of Emergency Surgery 2
For anticipatory nausea, add lorazepam, as recommended by the National Comprehensive Cancer Network 1, 3