| Line 15: |
Line 15: |
| | | | |
| | | | |
| − | ==Haemorrhagic Gastritis== | + | ==[[Gastritis, Haemorrhagic]] == |
| | | | |
| − | ===Clinical===
| |
| | | | |
| − | * Usually only seen post mortem.
| |
| − | * [[Forestomach - Anatomy & Physiology|Stomach]] full of thick tarry clots.
| |
| − | * Occasionally will vomit blood in life.
| |
| − |
| |
| − | ===Pathology===
| |
| − | [[Image:haemorrhagic gastritis.jpg|thumb|200px|right|Haemorrhagic gastritis (Courtesy of BioMed Image Archive)]]
| |
| − | ====Gross====
| |
| − |
| |
| − | * Wall of [[Forestomach - Anatomy & Physiology|stomach]] is blacked and ulcerated.
| |
| − | ** Red, thickened, necrotic, haemorrhagic mucosa.
| |
| − |
| |
| − | ====Histologically====
| |
| − |
| |
| − | * Coagulative necrosis with fibrin, oedema, haemorrhage, and sometimes emphysema.
| |
| − | * May extend deep into submucosa/muscle.
| |
| − |
| |
| − | ===Pathogenesis===
| |
| − |
| |
| − | * There are several causes of haemorrhagic gastritis
| |
| − | *# Aspirin and non-steroidal anti inflammatory drug toxicity.
| |
| − | *# Peracute / acute infections, e.g.
| |
| − | *#* Swine Fever
| |
| − | *#* Anthrax
| |
| − | *#* Leptospirosis in dogs (''Leptospira icterohaemorrhagiae'').
| |
| − | *#Clostridial disease
| |
| − | *#* e.g. '''Braxy''' (''Clostridium septicum'')
| |
| − | *#** Affects older lambs or yearlings producing sudden death.
| |
| − | *#** Usually seen on sheep grazing on frosted grass so more common in colder areas.
| |
| − | *#** Bacterial exotoxin causes acute abomasitis.
| |
| − | *#** '''Pathology'''- At post mortem the [[Forestomach - Anatomy & Physiology|stomach]] is grossly distended with partially clotted blood. The wall of the [[Forestomach - Anatomy & Physiology|stomach]] is thickened,reddened and oedematous.
| |
| − | *#** Diagnosed by isolation of organism from the [[Forestomach - Anatomy & Physiology|stomach]] wall.
| |
| − | *#** Is now usually vaccinated against (Heptovac 7 in 1 clostridial vaccine).
| |
| − | *# [[Stomach and Abomasum Toxicology - Pathology#Warfarin Poisoning| Warfarin poisoning]].
| |
| | | | |
| | == Vesicular Gastritis== | | == Vesicular Gastritis== |