Abomasal Displacements: General Flashcards
which stage of lactation is displacements most common in?
FRESH
definitive diagnosis for a volvulus?
must do exploratory; impossible to distinguish from RDA otherwise (although US can give a clue: pylorus is usually displaced cranially in volvulus)
what sign on US suggests a volvulus?
pylorus displaced cranially
contributing factors to abomsal displacements
- decreased motility
- accumulation of gas
- decreased rumen vol (anorexia, post partum)
- stage of lactation (80% of cows are fresh)
- sudden shrinkage of uterus post partum
- genetics (seen more in high yield milkers)
- metabolism (neg. E, insulin resistance, decreased abomsal motility)
- stress/other diseases (metritis, RFM, mastitis, ketosis)
- cold season
most common signalment for LDA
post partum dairy cows
____ is RARELY palpable on rectal palpation. ____ and ____ can occasionally be palpated
LDA is RARELY palpated
RDA/RVA sometimes
what suggests a volvulus is in the later stages?
shift from metabolic alkalosis to acidosis (shock)
greater omentum attaches to which side of abomasum
greater curvature
most common type of displacement?
LDA
less omentum attaches to which side of abomasum?
lesser curvature
is there a certain signalment for RDAs?
no
complications of abomasal volvulus
- vagal indigestion
- thrombosis
- peritonitis
- abomasal wall damage (necrosis)
digestive triad
- hypochloremia
- hypokalemia
- metabolic alkalosis
biochem seen with LDA/RDA
- hypochloremia
- hypokalemia
- metabolic alkalosis
- sometimes hypocalcemia and ketosis
which direction does abomasum rotate in RDA?
counterclockwise
