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3rd: Pathology I > L3 - Postmortem Changes & Non-Lesions > Flashcards

L3 - Postmortem Changes & Non-Lesions Flashcards

1
Q

Describe the elements of postmortem decomposition and factors which facilitate it

A

…. idk the answer yet

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2
Q

The reason why we formalin fix tissues ASAP A. You want to prevent autolysis B. You want to allow autolysis to occur C. you want to allow putrefaction to occur

A

A. You want to prevent autolysis

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3
Q

Autolysis: A. Occurs before somatic death due to total diffuse hypoxia B. Occurs after somatic death due to total diffuse hypoxia

A

B. Occurs after somatic death due to total diffuse hypoxia

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4
Q

Process by which post mortem bacteria break down tissues

A

Putrefaction:

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5
Q

With regards to PM decomposition, those tissues with greater concentration of proteolytic enzymes will autolyze the quickest True or False

A

True

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6
Q

Rate of decomposition depends on:

A. Cause of death

B. Environmental and body temperature

C. Microbial flora

D. All of the above

A

D. All of the above

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7
Q

Several hours after the cow dies this happens:

What is this PM change ?

A

Rumen mucosa sloughing in a cow

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8
Q

What is the disease name ?

A

“Pulpy kidneys” in sheep – accelerated renal autolysis associated with Clostridium perfringens type D septicemia

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9
Q

Which of the following is NOT a Morphological change of PM Decomposition?

A. Rigor mortis

B. Liver mortis

C. Hypostatic congestion

D. Hemoglobin imbibition

E. Bloat

A

B. Liver mortis

Note: It is called Livor mortis (aka Hypostatic congestion)

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10
Q

Name the 8 morphological changes of PM decomposition discussed in class:

A
  1. Rigor mortis
  2. Livor motris (aka Hypostatic congestion)
  3. Post-mortem blood clotting
  4. Hemoglobin imbibition
  5. Bile imbibition
  6. Bloat
  7. Commone PM eye changes
  8. Pseudomelanosis
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11
Q

Unattached; Shiny and wet; Elastic; Perfect cast of vessel lumen are all characteristics of an antemortem clot (thrombus)

True or False?

A

False

Note: These are characteristic of a post mortem clot

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12
Q

Ingesta in the trachea of a cow.

Normal or postmortem lesion ?

A

postmortem lesion

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13
Q

Red brown fluid coming from the nose.

Normal or postmortem lesion ?

A

postmortem lesion

Note: Can be gastric or lung fluid

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14
Q

Pulmonary edema and congestion in a dog

Normal or postmortem lesion ?

A

postmortem lesion

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15
Q

Sheep with froth in trachea

Normal or postmortem lesion ?

A

postmortem lesion

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16
Q

Giant congested spleen from a dog euthanized with barbiturates

Normal or postmortem lesion ?

A

postmortem lesion

Note: Huge spleen (seen a lot in euthanized dogs)

17
Q

Canine small intestine with intussusception, easily reduced

normal or postmortem lesion ?

A

postmortem lesion

18
Q

Dog lung with osseous metaplasia

Normal or postmortem lesion ?

A

postmortem lesion

Note: (change of phenotype of a tissue to another type of tissue); feels like stones in the lungs

19
Q

Horse urinary bladder filled with sediment (calcium carbonate and mucous)

Normal or postmortem lesion?

A

Normal (in horses)

20
Q

Unguiculate papillae in the rumenoreticular groove of a calf

Normal or postmortem lesion ?

A

Normal

21
Q

Horse spleen, capsular indentation
Normal or postmortem lesion?

A

Normal

22
Q

Horse spleen.
Extracapsular red pulp

Normal or postmortem lesion ?

A

Normal

23
Q

Placenta of a horse; Cervical star

Normal or postmortem lesion ?

A

Normal

24
Q

Amniotic plaques in a calf

Normal or postmortem lesion ?

A

Normal

25
Q

Equine fetus ovaries

Normal or postmortem lesion ?

A

Normal ovaries

26
Q

Equine fetus; hoof

Normal or postmortem lesion ?

A

Normal

27
Q

Foal Lingual hyperkeratosis

Normal or postmortem lesion ?

A

Normal (in foals)

28
Q

Gastroliths in a llama

Normal or postmortem lesion ?

A

Normal

29
Q

Unguiculate papillae in the rumenoreticular groove of a calf

Normal or postmortem lesion ?

A

Normal

30
Q

Cat (Left) and horse (Right) kidneys

Normal or postmortem lesion(s) ?

A

Normal

Note: Cat kidneys are a little bit more paler normally

31
Q

Cat small intestine

Normal or postmortem lesion ?

A

Normal

32
Q

Calf small intestine

Normal or postmortem lesion ?

A

Normal

33
Q

Sheep lung

Normal or postmortem lesion ?

A

postmortem lesion

Note: RUSVM Student anesthesis case gone bad

34
Q

Lungs

Normal or postmortem lesion

A

Postmortem leison

Note: Animal may have died on its right side; The lesion is bilateral

35
Q

Rumen of a cow

True lesion or postmortem lesion ?

A

True lesion

Note: Happened when the animal was alive; put in necropsy report

MDx: Ulcerative rumenitis (in a cow)

MDx: Ulcerative gastritis (in a dog)

36
Q

Name this postmortem change:

A

“Chicken fat clot” from a horse

Note: Normal in horses but ABNORMAL in other species

37
Q

Contraction of the muscles after death is called ________

A

Rigor mortis

38
Q

Who bloats faster herbiores or carnivores ?

A

herbiores

39
Q

__________ refers to greenish-black discoloration of tissues post mortem.

A

Pseudomelanosis

3rd: Pathology I (17 decks)

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