Term
| What is vagal indigestion? |
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Definition
| -a group of disorders caused by dysfunction of the vaugs nerve resulting in outflow problems of the rumen, omasum, or abomasum depending o the location of the nerve damage |
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Term
| What are the three clinical forms of vagal indigestion? |
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Definition
-eructation failure
-omasal transport failure
-abomasal outflow failure |
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Term
| Describe Type I Vagal Indigestion(eructation failure)? |
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Definition
-esophageal or reticular branches
-disrupt reticulorumen motility
-ruen hypomotility
-dec ingesta in rume
-recurrent free gas bloat |
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Term
| What are some non-vagal causes of eructation failure? |
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Definition
-reticular adhesions: TRP/ulcers
-severe rumenitis
=reticular inflammation: actinobacillosis
-other free gas bloats |
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Term
| What are the clinical signs of type I vagal indigestion (eructation failure)? |
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Definition
-anorexia & poor production: gradual
-dec rumen motility
-mild to moderate free gas bloat
-scant soft feces
-ADR |
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Term
| How do we treat type I vagal indigestion/ eructation failure? |
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Definition
-rumen transfaunation
-temporary rumenostomy |
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Term
| What is the prognosis of type I vagal indigestion/eructation failure? |
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Definition
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Term
| What is type II vagal indigestion? |
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Definition
-omasal transport failure
-reticular/omasal vagal branches
-disruption of omasal motility
-rumen motility preserved
-inc ingesta in rumen
-rumen hypermotility
-churns contents into foal
-seconday froth bloat |
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Term
| What are some non-vagal causes of type II vagal indigestion/omasal transport failure? |
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Definition
-perireticualr abscess
-FB
-tumor |
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Term
| What are the clinical signs of type II vagal indigestion/omasal transport failure? |
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Definition
-gradual/ADR/distension
-abdominal distension: papple
-hypermotility of rumen
-long fibers in feces
+/- bradycardia |
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Term
| HOw do we treat type II vagal indigestion/omasal transport failure? |
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Definition
-pre=op abx
-rumenotomy: reticulo-omasal jct, reticular wall, remove FB, check for abscesses |
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Term
| What is the prognosis of Omasal Transport Failure? |
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Definition
-loose FB = excellent
-TRP abscess = good (75%)
-liver abscess = fair (50%)
-tumors: depends on the type |
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Term
| What is Type II Vagal Indigestion? |
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Definition
-abomasal outflow failure
-abomasal vagal brr damaged
-disrupt abomasal motility but retain rumen motility
-inc ingesta in rumen: abomasal reflux-fluid
-rumen hypomotility & abomasal distention
-bloat not prominent feature |
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Term
| What are some non-vagal causes of abomasal outflow failure? |
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Definition
-LSA
-adhesions: peritonitis
-dietary: coarse hay/winter
-abomasal volvulus
-FB
-functional obstruction of lat pregnancy: aka type IV vagal indigestion |
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Term
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Definition
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Term
| Why does abomasal outflow failure lead to metabolic alkalosis? |
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Definition
-abomasal secretions sequestered = reflux of abomasal contents into rumen
-sequestration of HCl = hypochloremia = met alkalosis |
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Term
| What are the clinical signs of abomasal outflow failure? |
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Definition
-ADR: dd to ww
-abodminal distension: pear on right & apple on left
-elarged rumen on rectal
-normal to liqued rumen
-dehydration & depression
-scant pasty feces |
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Term
| How do we diagnose abomasal outflow failure? |
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Definition
-non-frothy hypomotile rumen
-enlarged rumen on rectal
+/- ballottment of abomasum
-severe met alkalosis: low Cl-
-elevated rumen Cl
-U/S
-exploratory laparotomy |
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Term
| What is prognosis of abomasal ouflow failure? |
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Definition
-worse than other forms of vagal indigestion b/c too sick
-FB in lumen: fair
-dietary: guarded
-active hardware: guarded
-volvulus: poor
-extensive adhesions: poor |
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Term
| How do we treat abomasal outflow failure? |
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Definition
-IV fluids: saline +/- extra K/Ca
-oral laxatives
-metaclopramide
-external massage
-keep on lush diet: grass |
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Term
| How do we surgically treat abomasal ouflow failure? |
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Definition
-lavage: through omasal canal
-pump in mineral oil
-massage abomasum
-leave NG tube in abomasum
-continue medical tx
-paramediam abomasotomy |
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