Post Mortem Changes and Non-Lesions Flashcards
Name this morphological change
Chicken Fat Clot
What are some common post mortem eye changes?
Corneal opacity
“Cold Cataracts”
Name this morphological change
Hemoglobin Imbibition
_________ occurs after somatic death due to total diffuse hypoxia
Autolysis occurs after somatic death due to total diffuse hypoxia
How do you tell if ingesta in the trachea is significant or not?
Inflammatory response would occur if ingesta was there antemortem
Autolysis
Self-digestion or degradation of cells and tissues by the hydrolytic enzymes normally in tissues
Rigor mortis occurs due to
Rigor mortis occurs due to depletion of ATP and inability of myosin to detach from actin binding site
____________ gives color, texture changes, gas production and odors
Putrefaction gives color, texture changes, gas production and odors
Post mortem _________ occurs several hours post death in the heart and vessels.
Post mortem blood clotting occurs several hours post death in the heart and vessels.
What is this? What is it caused by?
Bloat Line
Ruminal tympany
Chicken Fat Clot
Due to separation of RBCs and clotted serum
Tissues with greater concentration of ________ will autolyze the quickest.
Tissues with greater concentration of proteolytic enzymes will autolyze the quickest.
____________________
GI tract, Pancreas, Gall Bladder
What is the cause? Is it significant to PM exam?
Due to degradation of capillaries in the nose.
Normal PM
Rigor Mortis
Contraction of muscles after death
Changes associated with bloat
Rectal/vagninal prolapse
Froth in trachea
Ruptured viscera
T/F: We typically give MDx’s to non-lesions and PM change.
False
______________ can delay or cause failure of blood to clot.
Coagulopathies can delay or cause failure of blood to clot.
Bile Imbibition
Bile in the gallbladder starts to penetrate the wall and stain the adjacent tissues - liver, intestines and diaphragm
Cause
Accelerated renal autolysis associated with Clostridium perfringens type D septicemia
What is the cause? Is it significant to PM exam?
Wet looking, discolored lungs
Caused by - Barbiturate Euthanasia
Normal
What is the cause? Is it significant to the PM exam?
Osseous Metaplasia
Caused by - old age
Normal
How do you differentiate bloat from ruminal tympany?
Clinical history and bloat line
Pseudomelanosis is commonly see in tissues in contact with the
Pseudomelanosis is commonly see in tissues in contact with the gut
_____________________
Kidney, Spleen, Liver, Gut wall itself
Hemoglobin Imbibition
Red staining of tissue, especially the intima of heart, arteries and veins
Name this morphological change
Livor Mortis (Hypostatic Congestion)
(Antemortem Clot/ Postmortem Clot) - Attached to vessel walls, dry and dull, lamellated and friable.
(Antemortem Clot/ Postmortem Clot) - Attached to vessel walls, dry and dull, lamellated and friable.
Putrefaction
Process by which post mortem bacteria break down tissues
Disease
Pulpy Kidney Disease in Sheep
Rate of decomposition depends on
Cause of death
Environmental and body temperature
Microbial flora
MDx
Ulcerative Rumenitis
Livor Mortis (Hypostatic Congestion)
Gravity pulls blood post death causing a variation in color of tissues (skin, lung, kidneys).
_______________________
Some areas the tissues will be more read and in others more pale
(Antemortem Clot/ Postmortem Clot) - Unattached, shiny and wet, elastic and creates a perfect cast of vessel lumen.
(Antemortem Clot/ Postmortem Clot) - Unattached, shiny and wet, elastic and creates a perfect cast of vessel lumen.
Pseudomelanosis is caused by
Decomposition of blood by bacterial action forming hydrogen sulfide with iron
Bloat
Results from postmortem bacterial gas formation in the lumen of the GI tract
Rigor mortis begins ________ post death and persits for __________.
Rigor mortis begins 1-6 hours post death and persits for 1-2 days.
Do herbivores or carnivores bloat faster?
Herbivores, due to increased bacteria in the rumen
What is the cause? Is it significant to the PM exam?
Giant, Congested Spleen
Caused by - Barbiturate Euthanasia
Normal
Is ingesta in the trachea always considered significant?
No, could be caused by transport.
Hemoglobin Immbibition is caused by
Hemoglobin Immbibition is caused by hemoglobin being released by lysed RBCs penetrating the vessel wall and extending to the adjacent tissues
Name this morphological change
Bile Imbibition
What can cause accelerated rigor mortis?
High heat and high activity before death
Pseudomelanosis
Greenish-black discoloration of tissues post mortem
