GI Tract Flashcards
How does alginates aid acid?
Forms a raft that protects oesophagus from acid
How does simeticone act?
Forms gas bubbles in stomach
How do magnesium/aluminium salts work
Neutralise acid locally
How does mebeverine/hyoscine work?
Relaxes smooth muscle, reducing motility
How do domperidone and maxolon work?
Increase peristalsis by blocking dopamine receptor. Relaxes pyloric sphincter
How does ranitidine work?
Blocks H2 receptors, reducing acid production
How does omeprazole/lansoprazole work?
Binds to proton pump, preventing acid production
What does misoprostol do?
Reduces acid production and increases mucous production
What does sucralfate do?
Forms a paste that covers ulcers
What is the purpose of oral rehydration therapy?
Promote water and electrolyte absorption
Give examples of oral rehydration therapy
Electrolade, dioralyte
how does loperamide and cophenotrope work
Reduces peristalsis
Give examples of bulk forming laxatives
Ispaghuka husk, sterculia
How do bulk forming laxatives work?
Increases feacal mass and peristalsis
How do stimulant laxatives work?
Rapid action, increase peristalsis