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Pharmacology
Antiemetic Agents
16
Medical
Graduate
10/08/2009

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Cards

Term
4 inputs that can trigger vomiting:
Definition
1. stretch-sensitive or chemosensitive afferent vagal afferents (stretched tummy)
2. Direct stimulation of area postrema
3. vesbitular afferents
4. higher cortical centers
Term
What kinds of agents are effective against motion sickness?
Definition
muscarinic antagonists or H1/M antagonists
Term
Scopolamine is what kind of drug?
Definition
Muscarinic antagonist
Term
dimehydrinate is what kind of drug?
Definition
mixed H1/M antagonists
Term
promethazine is what kind of drug?
Definition
mixed H1/M receptor antagonist
Term
when you see - setron, think of
Definition
selective 5HT3 antagonists
Term
sites of action for - setrons?
Definition
vagal afferents, nucleus of solitary tract, area postrema - 5HT3 antagonist
Term
Name the receptors metoclopramide agonizes and antagonizes
Definition
D2-R antagonist, 5HT3 R antagonist (high dose)
5HT4 R agonist (prokinetic property)
Term
What side effect can chronic use of metoclopramide result in? (think of receptors antagonized...)
Definition
EPS (D2 antagonist)
Term
chlorpromazine blocks what kind of receptor?
Definition
DA, so even though it's a classical antipsychotic, it can also be used for post-op nausea
Term
prochlorperazine is what kind of drug?
Definition
phenothiazine (such as chlorpromazine) with DA R antagonist activity
Term
What glucocorticoid can enhance the effectiveness of other anitemetics in cancer patients?
Definition
dexamethasone
Term
What benzodiazepine can be an adjunt tx for cancer chemotherapy to reduce stress and anticipatory emesis?
Definition
lorazepam
Term
Mechanism for Aprepitant
Definition
substance P receptor antagonist that is useful for delayed phase vomiting caused by cisplatin
Term
Dronabinol is what kind of drug?
Definition
a cannabinoid
Term
Dronabinol is used to...
Definition
stimulate appetite in AIDS patients
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