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Anticipatory Onset
Nausea and Vomiting
Anticipatory Onset
Nausea and Vomiting:
- is nausea and vomiting that happens before
or "in anticipation of" chemotherapy
- is a learned reaction that results when severe
nausea and vomiting are experienced during previous
chemotherapy treatments
Preventing CINV is the best way
to avoid anticipatory CINV.
Because the brain's Chemoreceptor
Trigger Zone does not control anticipatory
CINV, the condition usually is not treated with antiemetic
drugs. Behavioral therapies like hypnosis,
relaxation, and guided
imagery, have shown some success in relieving
anticipatory CINV. In some cases, antianxiety drugs
such as the benzodiazepines may be used.
Click here to view a table listing the
antiemetic drugs commonly used to prevent and treat
CINV.
Checklist of Questions About Your Medicine
Regardless of the kind of chemotherapy you are taking
or the type of CINV diagnosed, ask your doctor the
following questions about any medicine they might
be considering to control your nausea and vomiting:
- How many times a day do I need to take my medicine?
- Can I have the medicine that is easiest for me
to take (especially if I am already taking
other medicines)?
- Can I have a medicine that is least likely to
interact with other medicines I am taking?
- Is my medicine OK to take if I have other conditions
(such as a heart, liver or kidney condition)?
- What happens if I forget to take it on time?
- What if it begins to wear off and I feel sick?
Can I take another one?
- Will I be free of symptoms day and night?
- Who should I tell if my medicine doesn’t
work?
- Are there any side effects from the medicine?
- What alternative medicines are there if my medicine
does not provide full 24-hour control or relief
of my nausea and vomiting (for example, if I
wake up at night feeling sick, or feel sick before
it’s time to take my next dose of medicine)
And remember: ALWAYS tell your
doctor, nurse and pharmacist about ALL the medications
you are taking — including over-the-counter medications
and dietary supplements.
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