- Blood tends to remain very liquid; hypostasis to hemolysis is rapid.
- Increase in intravascualr blood discoloration into dependent body tissue eventually becomming extravascular.
- Refridgerated bodies often appear embalmed because of cold stiffening and red blood discoloration that resemble active dye in arterial fluid.
- Slows the onset of rigor mortis and decomposition- hinders the growth of bacteria.
- Increases the onset of algor mortis.
- Freezer burn to surface tissue similar to desiccation marks will occur during extended refridgeration.
List The Effect That Refridgeration Has on a Dead Human Body.
- Skin Slip (Desquamation)
- Accumulated Gases
- Note: Decomposition is the only positive sign of decomposition.
The Cardinal Signs of Decomposition
- Edema - Most common - Anasarca
- I.V. needle - Infiltration
- Old and emaciated until unhealthy or degenerative epidermal tissue - diabetes.
- Bandages carelessly pulled off.
Antemortem or Agonal Desquamation is skin slip due to conditions existing prior to death.
Physical Means of reducing rigor mortis.
- Optimum - 98oF to 100oF or body temperature.
- Minimum- 32oF
- Maximum- 120oF (which stops decomposition).
Temperature- One of the most important factors affecting bacterial growth.
- Stoppage of blood circulation.
- Gravitation of blood to the dependent parts of the body.
- Environmental surface evaporation.
Postmortem Physical Changes Are Brought About by The:
- Heat is continually produced after death by the oxidation of the food products in tissues.
- The various methods of cooling the body, such as circulation, perspiration, and respiration have ceased, causing head to accumulate in tissues.
- The activity of bacteria prior to death causing energy and heat to build up in tissues- septicemia or any febrile infective disease.
- Excessive muscular activity; an example would be the spasms produced by strychnine poisoning.
List The Causes of Postmortem Caloricity
- Acid in reaction
- Loss of sensitivity to stimuli
Characteristics of rigor mortis- muscles will become: