PreOp Meds: Dopamine Blockers Flashcards
1
Q
What are dopamine blockers used for in the preoperative setting? What is the mechanism of action?
A
Stimulation of gastric motility:
- increases lower esophageal sphincter tone
- stimulates peristalsis
- relaxes pylorus & duodenum
2
Q
What are the downsides of dopamine receptor blockers?
A
- Extrapyramidal reactions (crosses BBB)
- Orthostatic hypotension
- No change in gastric pH
3
Q
Name the three dopamine blockers discussed in lecture?
A
- Metoclopramide
- Domperidone
- Droperidol
