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Science for Medicine > Post-mortem > Flashcards

Flashcards in Post-mortem Deck (21)
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1
Q

What is the general description of death?

A

Irreversible failure of the cardiovascular system.

2
Q

What results in cellular death?

A

Failure of oxygen delivery to the tissues.

3
Q

What happens to blood after death?

A

Becomes stagnant and settles under the effects of gravity.

4
Q

What is putrefaction?

A

The process of decay or rotting in a body or other organic matter.

5
Q

When is the best timing of death?

A

First 18 hours

6
Q

Why is there inaccuracies in time of death?

A

Inherent biological variability.

7
Q

What factors influence the rate of body cooling?

A
Body temperature at time of death
Clothing
Natural insulation
Convection currents
Environmental temperature
Length of plateau phase.
8
Q

What is the ± of time?

A

2.5hrs

9
Q

What is rigor mortis?

A

Stiffening and shortening of muscle fibres leading to rigidity or the musculature and fixation of the joints.

10
Q

What causes rigor mortis?

A

Reduction of ATP within the muscles after death.

11
Q

When does rigor mortis become apparent and when does it become fully established?

A

5-7 hours

8-12 hours

12
Q

What is being investigated for its use of estimating time of death?

A

Measurement of potassium ions in the vitreous humour of the eye.

13
Q

With putrefaction, what can be seen at 2-3 days after death and 1 week after death?

A

Greenish discolouration of abdominal

Blister formation and tissue swelling.

14
Q

What is mummification?

A

Dry decomposition with desiccation of the body and a lack of bacterial involvement.

15
Q

Who are prone to mummification?

A

Infants

16
Q

What is adipocere formation?

A

Induced by the alteration of fatty tissue within the body into a greasy/waxy or brittle material which can maintain the body structure.

17
Q

Where does adipocere formation often occur?

A

In damp or wet environments.

18
Q

What is skeletonisation?

A

The condition when all of the soft tissues of the body have completely degraded.

19
Q

What is post mortem hypostasis?

A

The pooling of stagnant blood in dependent regions of the body under the influence of gravity.

20
Q

What would cherry red hypostasis allow you diagnose?

A

Carbon monoxide poisoning (high saturation)

21
Q

What are examples of artefacts?

A

Resuscitation
Animal predation
Traumatic injury