Post Mortem Examination
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What is a necropsy?
An examination of an animal after death
What is the purpose of a post mortem examination?
To determine the cause of death or extent of disease
List different reasons for performing a post mortem examination
- Determine cause of death
- Determine extent of disease/confirmation of pre-mortem diagnosis
- Unknown illness
- Unexpected/sudden death
- Herd health issues
- Legal cases
What are the two main approaches to a PM examination?
Left lateral recumbency or dorsal recumbency
List some examples of PM artefacts
- Rigor mortis
- Gravitational hypostasis/hypostatic congestion
- Postmortem blood clots
- Colour changes
- Postmortem imbibition
- Postmortem crepitation
- Sodium phenobarbitol effects
What are the effects of sodium phenobarbitol (euthanasia)?
- Brown, crumbly blood in right atrium
- Firm plaques
- Pulmonary oedema
How thick should tissue samples be for histopathology?
Less than 1cm thick in at least one dimension
What are samples for histopathology submitted in?
Formalin (1:10 ratio) in a wide mouth, leak proof jar
How are samples submitted for bacteriology/virology?
At least 1cm of fresh tissue is submitted on ice
How much tissue should be submitted for toxicology?
How much faeces should be submitted for parasitology?
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