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

1
Q

regressive changes of stomach

A

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

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2
Q

types of necrosis of stomach

A

colliquation/coagulation
spf/deep
circumscribed/deep

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3
Q

causes of necrosis

A

circulatory disturbance
bacteria
mould, toxoplasma
gastric juice
mordant chemicals

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4
Q

necrosis causing bacteria

A

fusobacterium necrophorum

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5
Q

ulcus definition

A

penetrating mucosal defect through lamina muscularis mucosae

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6
Q

development of peptic erosions & ulcers

A

decreased resistance against autodigestion

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7
Q

forms of peptic erosions & ulcers

A

round
oval
cone
staged
terraced

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8
Q

days necrotized for ulcer

A

1 days

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9
Q

days necrotized for peptic ulcer

A

3-4days

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10
Q

what is a fistula

A

when the necrosis arrodes all layers

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11
Q

healing of erosion

A

ad integrum

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12
Q

healing of ulcer

A

granulation tissue in base, overgrown by epithelium

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13
Q

mechanical causes of erosions

A

rough, harsh string fodder in calves

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14
Q

bacteria causing prolonged gastritis

A

helicopbacter

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15
Q

gastric ulcers in swine

A

intense farming
breed dependent
lesions on pars oe

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16
Q

first signs of gastric ulcers in swine

A

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

17
Q

causes of gastric ulcers in swine

A

diet
bad husbandry
stressors (histamine problems)