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Post-Mortem Change - Pathology (view source)
Revision as of 12:53, 14 February 2011
, 12:53, 14 February 2011no edit summary
==Algor Mortis==
==Algor Mortis==
*** The upper portion is quite translucent and resembles chicken fat.
*** The upper portion is quite translucent and resembles chicken fat.
*** The lower portion is intensely red and resembles redcurrant jelly.
*** The lower portion is intensely red and resembles redcurrant jelly.
* Care must be taken to differentiate between post-mortem clotting of blood and ante-mortem [[Thrombosis - Pathology#Introduction|thrombi]].
* Care must be taken to differentiate between post-mortem clotting of blood and ante-mortem [[Thrombosis#Introduction|thrombi]].
** In post-mortem clotting, there is no damage to the inner surface of the vessel and the clot can easily be removed.
** In post-mortem clotting, there is no damage to the inner surface of the vessel and the clot can easily be removed.
** A thrombus is not easily removed from the underlying vascular endothelium.
** A thrombus is not easily removed from the underlying vascular endothelium.
* One of the earliest local colour changes.
* One of the earliest local colour changes.
* Bile salts diffuse out of the [[Gall Bladder - Anatomy & Physiology|gall bladder]].
* Bile salts diffuse out of the [[Gall Bladder - Anatomy & Physiology|gall bladder]].
** Stain nearby tissue like the [[Liver - Anatomy & Physiology|liver]], gut, [[Forestomach - Anatomy & Physiology|stomach]] and omentum.
** Stain nearby tissue like the [[Liver - Anatomy & Physiology|liver]], gut, [[Monogastric Stomach - Anatomy & Physiology|stomach]] and omentum.
* NOT the same thing as jaundice.
* NOT the same thing as jaundice.
** Generalised discoloration of tissues due to bile pigments seen in the living animal.
** Generalised discoloration of tissues due to bile pigments seen in the living animal.
* Other metabolically active tissues also become soft from post-mortem change, e.g. the convoluted tubules of the renal cortex.
* Other metabolically active tissues also become soft from post-mortem change, e.g. the convoluted tubules of the renal cortex.
** Particularly prominent in PME of the sheep.
** Particularly prominent in PME of the sheep.
*** Can be difficult to distinguish this appearance from the toxaemic changes seen in [[Intestines Catarrhal Enteritis - Pathology#"Pulpy kidney" Disease|pulpy kidney]].
*** Can be difficult to distinguish this appearance from the toxaemic changes seen in [[Pulpy Kidney|pulpy kidney]].
** Also true of other tissues such as the brain and spinal cord.
** Also true of other tissues such as the brain and spinal cord.
*** Can become almost fluid in texture.
*** Can become almost fluid in texture.
** The posterior surface of the [[Liver - Anatomy & Physiology|liver]].
** The posterior surface of the [[Liver - Anatomy & Physiology|liver]].
** The pancreas.
** The pancreas.
** Part of the [[Forestomach - Anatomy & Physiology|stomach]] wall.
** Part of the [[Monogastric Stomach - Anatomy & Physiology|stomach]] wall.
** The ventral surfaces of the kidneys.
** The ventral surfaces of the kidneys.
** The putrefactive bacteria grow through the wall of the intestine present and begin attacking the proteins of these organs.
** The putrefactive bacteria grow through the wall of the intestine present and begin attacking the proteins of these organs.
#* Deposited after death and appear within hours.
#* Deposited after death and appear within hours.
# Removal of tissue by rats or crows.
# Removal of tissue by rats or crows.
# The tip of a protruding [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]] may be bluish in colour and dry from the clenched jaws.
# The tip of a protruding [[Tongue - Anatomy & Physiology|tongue]] may be bluish in colour and dry from the clenched jaws.
==Agonal Changes==
==Agonal Changes==
** Crystal deposition on the endocardium is another common barbiturate associated change.
** Crystal deposition on the endocardium is another common barbiturate associated change.
* Agonal regurgitation of GI contents can also occur resulting in food material being present in the airways and possibly alveoli.
* Agonal regurgitation of GI contents can also occur resulting in food material being present in the airways and possibly alveoli.
[[Category:General Pathology]]