Concepts of GI DZ

Question 1

Filling dysfunction

Answer 1

Failure to relax

increase in postprandial intragastric pressure cause pain, nausea, and vomiting

Question 2

What type of food moves faster/ easier digestion?

Answer 2

Liquids> solids

Carbs> Protein> Fat

Question 3

What is normal gastric emptying time in a dog?

Answer 3

fed its caloric requirement once daily is 12-14 hours; if vomiting 18 hr post meal means delayed gastric emptying

Question 4

Emptying dysfunction

Answer 4

gastric and SI diseases

- delay emptying and cause vomiting, gastric outlet obstruction

Question 5

Components of gastric barrier?

Answer 5

bicarb, epithelial cells, surface mucus, mucosal blood flow, prostaglandins, basal membrane

Question 6

Gastric barrier dysfunction

Answer 6

MC in dogs

- cause pain, nausea, vomiting

Question 7

What is one key distinguishing factor between vomiting & regurg?

Answer 7

Retching ( active abdominal contractions)

Question 8

What are the 4 centers that stimulate the emetic center?

Answer 8

Cerebral cortex
Chemoreceptor Trigger Zone
Oculovestibular System
Gastrointestinal Tract

Question 9

The colon has limited capacity to absorb water, but does so efficiently. T/F

Answer 9

True

Question 10

What causes osmotic diarrhea & examples

Answer 10

excess of osmotically active molecules are retained in the bowel lumen & results from failure to digest or absorb nutrients

Ex: EPI, intestinal dysbiosis, acute viral disease, and lactose intolerance

Question 11

What causes secretory diarrhea & examples

Answer 11

stimulation of excess secretion overwhelms absorption

Ex. Enterotoxin & fat malabsorption (EPI)

Question 12

What causes exudative diarrhea & examples

Answer 12

tissue fluid, serum proteins, or blood leakage due to mucosal permeability (2ndary to inflammation)

Question 13

What causes disordered motility & examples

Answer 13

faster motility through GI tract= less time available for absorption (ex. opiods)