Lecture 6 Flashcards
What is the difference between simple gastric dilation and acute GDV
Simple: not life threatening
Acute: life threatening emergency
What is thought to be associated with acute GDV
- Large amount of food
- Dry dog biscuits high in fat
- Post-prandial exercise or excitement
- Aerophagia
What is gastric dilation
Fluid and/or food accumulates in the stomach causing gastric volvulus
What is gastric volvulus
The stomach rotates along the mesenteries axis causing obstruction of gastro-oesophageal and pyloric outflow
What does high inter gastric pressure and twisting cause
Outflow obstruction to gastric veins causing more fluid and gas build up in stomach
What does the defended stomach compress
Vena cava which decreases the venous return/cardiac failure causing cardiogenic shock
What side are most abomasal displacements
Left side
What does left sided abomasal displacement cause
Abomasal atony and gaseous distension
What will 20% of right sided abomasal displacement lead to
Volvulus
Where is abomasal dilation and tympany seen
Syndrome of young cattle - mainly dairy breeds
What is the pathophysiology of abomasal dilation and tympany
Fermentation of high energy ingesta and gas producing bacteria in the abomasum
What is present with abomasal dilation and tympany
Hyperglycaemia and glycosuria
What would be seen in the necropsy of abomasal dilation and tympany
Haemorrhage, oedema, necrosis, emphysema of the abomasum and other compartments of the fore stomach are found at necropsy
What can be the causes of gastric or abomasal impaction
Vagal nerve damage and physical obstruction
What can cause vagal nerve damage
Thoracic lesions
