22. Time Since Death. Definition & Estimation

Question 1

Define “Time Since Death”

Answer 1

• aka Post-Mortem Interval
• Period that’s elapsed between death — actual performance of post-mortem exam

Question 2

How is Time of Death, estimated?

Answer 2

• Degree / Distribution of Rigor, Livor + Algor Mortis
• Changes in skin / mucous membrane
• Degree / Distribution of Late-PM Changes
• Bladder Content and Gastric Emptying Time
• Entomology and Forensic Botany

Question 3

Explain Gastric Emptying Time

Answer 3

• Depending on the last meal - it gives a good idea to estimate the time of death
• A light meal may take couple of hrs
• Whilst a heavy meal may take up-to 6h

Question 4

Explain Bladder Content

Answer 4

• IF the body’s found to be warm + supple in the morning = indicator of a full bladder
• Hence time of death - approx. 1-2h
• IF body’s developed RIGOR BUT has a full bladder = person has died, the night before

Question 5

Explain Entomology

Answer 5

• When foul smelling gases, from Putrefaction attract insects
• Formation of Maggots within 12 - 24h