14. Regressive changes in the stomach. Pathogenesis of gastric ulceration

Question 1

regressive changes of stomach

Answer 1

oedema of wall
haemorrhagic infiltration of wall
necrosis of mm
peptic erosions & ulcers
dystrophic calciphication of mm

Question 2

types of necrosis of stomach

Answer 2

colliquation/coagulation
spf/deep
circumscribed/deep

Question 3

causes of necrosis

Answer 3

circulatory disturbance
bacteria
mould, toxoplasma
gastric juice
mordant chemicals

Question 4

necrosis causing bacteria

Answer 4

fusobacterium necrophorum

Question 5

ulcus definition

Answer 5

penetrating mucosal defect through lamina muscularis mucosae

Question 6

development of peptic erosions & ulcers

Answer 6

decreased resistance against autodigestion

Question 7

forms of peptic erosions & ulcers

Answer 7

round
oval
cone
staged
terraced

Question 8

days necrotized for ulcer

Answer 8

1 days

Question 9

days necrotized for peptic ulcer

Answer 9

3-4days

Question 10

what is a fistula

Answer 10

when the necrosis arrodes all layers

Question 11

healing of erosion

Answer 11

ad integrum

Question 12

healing of ulcer

Answer 12

granulation tissue in base, overgrown by epithelium

Question 13

mechanical causes of erosions

Answer 13

rough, harsh string fodder in calves

Question 14

bacteria causing prolonged gastritis

Answer 14

helicopbacter

Question 15

gastric ulcers in swine

Answer 15

intense farming
breed dependent
lesions on pars oe

Question 16

first signs of gastric ulcers in swine

Answer 16

thickening
rough epithelium
bark like, harshly wrinkled
no desquamation
necrosis in str. profundum

Question 17

causes of gastric ulcers in swine

Answer 17

diet
bad husbandry
stressors (histamine problems)