Test 2 Flashcards
Death rattle
Respiratory gurgling in throat of dying person
Caused by lack of cough reflex
Moribund
A dying condition during Agonal period
Death struggle
Semi convulsive twitches that occur before death
Somatic death
The body loses physiological & metabolic activity
Brain death
If respiration & heartbeat are not reestablished
Biological death
Simple life processes of various organs and tissues cease
Post Mortem cellular death
Cells use up stored elements, overcome by autolytic processes & die
How long do each take to die? Brain & nerve cells Muscle cells Cornea cells Blood cells
5 min
3 hours
6 hours
6 hours
Necrobiosis
Natural death of cells
Necrosis
Cells die due to disease
Agonal algor
Cooling of body prior to death
Agonal hypostasis
Settling of blood into dependent tissues of body
Agonal coagulation
Blood begins to clot & congeal
Agonal capillary expansion
Opening of pores into walls of capillaries
Agonal edema
Increase in amount of moisture or fluids
Result from disease or capillary expansion
Agonal dehydration
Decrease in moisture or fluids
Results from disease or capillary expansion
Translocation
Movement of micros from one area to another
Physical changes
Brought on by forces of nature
Chemical change
Brought on by chemical changes
Algor Mortis
Postmortem cooling of the body
Body will cool to surrounding environment
Intrinsic factors vs extrinsic factors
Factors that affect cooling within body itself
Vs
Factors within surrounding environment
Hypostasis
Process in which blood settles
Livor Mortis
1/2 to 2 hours after death
Also known as postmortem lividity
Discoloration of skin from blood as a result from hypostasis
Imbibition
Ability of cells to draw moisture from surrounding areas into themselves
Sludge
Blood sticks together in clumps due to dehydration
Sludge does not allow for good drainage
5 post Mortem chemical changes
Postmortem caloricity Postmortem stain Shift in ph Rigor Mortis Decomposition
Post Mortem stain
Blood discoloration brought on by hemolysis of the blood
Fermentation
The process by which glucose breaks down
Factors that would speed up decomposition
Factors that would slow down decomposition
Hot room vs a cold room
Normal PH of body
7.4
Discuss Agonal changes & how they change physical & chemical makeup of the body
Physical- algor Mortis, cooling Dehydration Hypostasis Chemical-post Mortem stain Change in PH Rigor
What factors can speed or slow down Livor Mortis?
Blood volume & blood viscosity
Discuss PH changes in dead human body after death.
When we die our PH drops to 5.5 or 6.0
Acidic–> rigor Mortis
Increase in ammonia–> PH rises
6 stages of death
Agonal Somatic Clinical death Brain death Biological death Postmortem cellular death
8 signs of death
Cessation of circulation Cessation of respiration Complete muscular relaxation Algor Mortis: cooling Rigor Mortis: stiffening Changes in eye Decomp Post Mortem lividity
Agonal 4 period changes
- Temperature
* agonal fever. *agonal algor - Circular
- Moisture
- Translocation of micros
6 physical post Mortem changes
Algor Mortis Hypostasis Dehydration Livor Mortis Increase in blood viscosity Invasion of micros
5 chemical changes postmortem
Post Mortem Caloricity Change in PH Rigor Mortis Post Mortem stain Decomp
Cadaveric spasm
Violent death
No period of flaccidity
Death grip