Changes

===Pathogenesis===

===Pathogenesis===

There are two manifestations of [[The Abomasum - Anatomy & Physiology|abomasal]] displacemet. In both the [[The Abomasum - Anatomy & Physiology|abomasum]] becomes trapped between [[The Rumen - Anatomy & Physiology|rumen]] and abdominal wall. The more comon presentation is the left displacement (LDA) which is Ventral and to the left of [[The Rumen - Anatomy & Physiology|rumen]].

There are two manifestations of [[The Abomasum - Anatomy & Physiology|abomasal]] displacemet. In both the [[The Abomasum - Anatomy & Physiology|abomasum]] becomes trapped between [[The Rumen - Anatomy & Physiology|rumen]] and abdominal wall. The more comon presentation is the left displacement (LDA) which is Ventral and to the left of [[The Rumen - Anatomy & Physiology|rumen]]. The omasum, reticulum and liver are also displaced.

[[The Abomasum - Anatomy & Physiology|Abomasal]] atony and increased gas production leads to displacement. This can be induced by the combination of a high concentrate diet,ketosis, hypocalcaemia and increased [[Volatile Fatty Acids - Anatomy & Physioogy|volatile fatty acids]] from the [[The Rumen - Anatomy & Physiology|rumen]]. A displacement to the right an RDA is less common.

[[The Abomasum - Anatomy & Physiology|Abomasal]] atony and increased gas production leads to displacement. Factors reducing abomasal motility include a high concentrate diet,increased [[Volatile Fatty Acids - Anatomy & Physioogy|volatile fatty acids]] from the [[The Rumen - Anatomy & Physiology|rumen]] and periparturient disease e.g ketosis, hypocalcaemia metritis.  Displacement to the left results in a reduced flow of ingesta as well as reduced digestion resulting in anorexia and dehydration.

 

 

 

A displacement to the right an RDA is less common.

Constriction of blood vessels and trauma to the vagus nerve results in [[The Abomasum - Anatomy & Physiology|abomasal]] distenstion with blood-stained fluid and gas, congested mucosa and infarction.

Constriction of blood vessels and trauma to the vagus nerve results in [[The Abomasum - Anatomy & Physiology|abomasal]] distenstion with blood-stained fluid and gas, congested mucosa and infarction.

Additionally the [[The Abomasum - Anatomy & Physiology|abomasum]] may rupture, causing peritonitis, shock and death.  

Additionally the [[The Abomasum - Anatomy & Physiology|abomasum]] may rupture, causing peritonitis, shock and death.  

==Treatment==

==Treatment==