19. Clinical signs and diagnosis of the right sided abomasal displacement Flashcards
Right side displaced abomasum?
Right sided= displacement dorsal to the right
- Moves up between the SI and the right sided thoracic part
- Could be combined with torsion as well
Clinical signs of right sided abomasum?
Clinical signs
• Course=
o ACUTE; torsion- shock- death
• General symptoms
o More prominent
§ Much more painful; esp in torsion!
§ Serious deterioration, weakness
• Basic clinical values
o T: normal
o P: much higher (normal 40-80) in RDA above 80-100 even
o R: variable
• Skin
o Dehydrated (especially the sunken eyes on a cow)!
• Mucous membranes
o Dry, pale= dirty red due to endotoxaemia; due to the necrotized area esp in case of torsion,
prolonged CRT
• Circulatory organs
o Signs of peripheral circulatory failure
• Digestive organs
o Appetite: completely lost, increased thirst
o Faeces: scant, pasty
o Rumen: Complete stasis
o Abomasum: Visible and palpable behind last rib and through rectal exam in severe cases (not
possible in LDA
Diagnosis of right sided abomasal displacement?
Diagnosis
• Clinical signs
o Acute = yes
• Lab tests
o Serious metabolic acidosis with high lactate content of the blood
• Local disturbances in the blood circulation
o Ischaemia- necrosis of tissue- tissue perfusion decreases- less O2 in the cells- lactate production
increased
§ Metabolic acidosis
§ ONLY IF RDA WITH TORSION
Physical examination methods for diagnosis of RDA?
Physical examination methods for diagnosis of RDA
- Rectal exam in severe cases
- Auscultation: Tinkling sounds due to large fluid and gas filled cavity where the fluid splashes around
▪ Low sensitivity 20% so not reliable
- Auscultation with ballottement: Large fluid content with a splashing sound
▪ Sensitivity: 60-70%
- Auscultation with percussion
Gas accumulation= ping metallic (steel band effect)
▪ Sensitivity: 90%!!! It’s better because in most cases gas is accumulated and not fluid!
Differential diagnosis of RDA ausculation percussion?
Differential diagnosis of RDA auscultation percussion
• Caecal dilatation and diarrhoea
o Upper corner right abdominal cavity: rectal palpation/CS for DD
• Small intestinal ileus
o Also reflux etc.
