Grade 1: 1-2 episodes (separated by 5 minutes) in 24 hrs
Grade 2: 3-5 episodes (separated by 5 minutes) in 24 hrs
Grade 3: ≥6 episodes (separated by 5 minutes) in 24 hrs; tube feeding, TPN, or hospitalization indicated
Grade 4: Life-threatening consequences; urgent intervention indicated
Characterize the symptom (onset, pace)
Ask the patient:
Have you had issues with nausea/vomiting in the past? Is this a new or worsening symptom? When did it start or get worse? Has it developed gradually or suddenly? Have you taken anything to relieve the vomiting? Any medications, OTCs, supplements, or marijuana?
Grade the symptom
Ask the patient:
How many times have you vomited in the past 24 hours? Are you keeping any fluids down?
Ask the patient:
Do you have any bloating, diarrhea, abdominal (belly) pain, or fever? Any change in your mood? Do you feel confused or cloudy? Any headache or dizziness?
Consider the following in individualizing the intervention: Is the patient a good or poor historian? Any language barriers or cognitive deficits? Is the patient reliable (able to carry out treatment recommendations)? Does this patient have alcohol/substance abuse issues? Does the patient have transportation? Is there sufficient caregiver support?
Patients with moderate or worse vomiting need to be seen if anti-emetics are not effective.
Patients with any of the red-flag symptoms should be seen immediately.
What do you suspect is the cause of the vomiting?