Emesis: What is it? Flashcards
1
Q
Why is vomiting important?
A
its a protective mechanism designed to remove irritating substances from the GI tract
2
Q
What can vomiting be the direct result of?
A
many different diseases
3
Q
What are the 5 types of stimuli that can trigger emesis?
A
- direct stimulation of the vomiting center
- stimulation of the CRTZ (dopamine receptors)
- irritation of tissues innervated by vagus nerve (GI tract, viscera)
- stimulation of vestibular nerve (motion sickness)
- stimulation of cerebral cortex
4
Q
How long after an animal ingests a toxin (liquid) can you induce vomiting?
A
within 2 hours
5
Q
How long after an animal ingests a solid toxin can you still induce vomiting to get rid of some of it?
A
within 4 hours
6
Q
When should you NOT induce vomiting? (4)
A
- caustic substances
- gasoline or other petroleum products
- animal is unconscious or extremely depressed
- animal is not able to vomit (rabbits, horses)
7
Q
What are the 2 types of drugs available to induce vomiting?
A
- centrally acting emetics
2. locally acting emetics
8
Q
What are centrally acting emetics?
A
stimulate dopamine or alpha-2 receptors in the CNS
9
Q
What are locally acting emetics?
A
cause irritation of the GI tract
