What are four types of death
1. cellular death
2. clinical or somatic death
3. legal death
4. brain death
What are four ways to determine death?
- 4. instrumentation
- a. EKG
- b. EEG
What are the three changes in death
1. Agonal Period
2. Early Period
3. Late Period
Discuss the Agonal Period
1. Perimortem interval
2. actual dying process
3. action possible
4. animals/ insects may arrive
1. breathing stops
2. circulation stops (vital reaction)
3. skin pallor
4. muscle relaxation
5. blood coagulation
6. eye changes
7. algor mortis (cooling)
8. livor mortis (blood setting)
9. rigor mortis (stiffening)
What is algor mortis?
cooling of body after death
What is livor mortis?
Postmortem hypostasis, lividity, or discoloration
What are Tardieu Spots
Rupture of small blood vessels due to pressure of settling blood
common death by asphyxia
artifact of decomposition
How are Tardieu spots helpful during death investigation
Tardieu spots help in determining the body was moved after death
What is Autolysis?
Autolysis is a postmortem tissue change which digestive enzymes break down protein, fat and carbs
apart of the sterile process
Autolysis decomposes during death
What are the four stages of decomposition?
Describe the decomposition stage of Fresh
this stage begins at or around the time of death and continues until the onset of early bloating
Describes the decomposition of Bloated
Involves "inflation" of the body by gases produced by decomposition. This process affects the major body cavities, the organs and body walls.
Describe the decomposition of Decay
Begins with first "venting" of gas and fluid from the bloated body. Also involves crack formation in the skin, allowing air to enter, facilitating aerobic decay
What is the process of decomposition?
1. blue green skin discoloration
2. spread of above
What is mmification
Drying of the body or its parts, occurs under hot and dry conditions in the absence of bacterial action
Cold, wet conditions promote saponification of fat in association with bacteria such as Clostridium welchii. Adipocere inhibits further putrefaction
What is Skeletonization?
Complete removal of skin and soft tissue; promoted by animals, insects and other environmental factors