CMT Embalming Techniques & Protocols 3 — Questions and Answers
Question 1: What is the purpose of 'pre-injection' fluid used before the primary arterial embalming solution?
- To fix proteins immediately upon entering the vessels
- To flush blood, dilate vessels, and condition tissues for preservative uptake (Correct answer)
- To neutralize decomposition gases in the cavities
- To replace cavity fluid aspirated during pre-injection
Correct answer: To flush blood, dilate vessels, and condition tissues for preservative uptake
Pre-injection fluids clear the vascular system of blood clots, dilate capillaries, and condition tissues to allow more even and thorough distribution of the preservative solution that follows.
Question 2: When embalming an autopsied body, which technique is used to ensure preservation of organs that have been removed and replaced?
- Re-attach organs and rely on cavity embalming for preservation
- Paint organs with undiluted cavity fluid and wrap in saturated gauze before replacement (Correct answer)
- Inject each organ individually via a hypodermic needle with arterial fluid
- Place organs in a formalin tank for 24 hours before replacement
Correct answer: Paint organs with undiluted cavity fluid and wrap in saturated gauze before replacement
Viscera removed during autopsy should be coated with undiluted cavity fluid and wrapped in gauze saturated with preservative before being returned to the body cavities.
Question 3: What does the term 'index' refer to when applied to arterial embalming fluids?
- The ratio of humectant to preservative in the solution
- The formaldehyde content measured as a percentage of the concentrate (Correct answer)
- The total volume of solution injected per kilogram of body weight
- The dilution ratio of concentrate to water used during injection
Correct answer: The formaldehyde content measured as a percentage of the concentrate
The index of an arterial fluid refers to its formaldehyde (HCHO) content expressed as a percentage, which determines the preservative strength of the concentrate.
Question 4: A body presents with extreme edema (waterlogged tissues). Which modification to standard embalming protocol best addresses this condition?
- Use a high-humectant, low-index fluid to hydrate tissues further
- Use a high-index fluid with a dehydrating co-injection at restricted water dilution (Correct answer)
- Inject a large volume of standard-dilution fluid to flush out excess fluid
- Avoid arterial embalming and rely solely on cavity treatment
Correct answer: Use a high-index fluid with a dehydrating co-injection at restricted water dilution
Edematous cases require a high-index (high preservative) fluid with minimal water added and a dehydrating co-injection chemical to help draw excess moisture out of waterlogged tissues.
Question 5: Which term describes the movement of embalming fluid from the vascular system into surrounding interstitial tissues?
- Osmosis
- Diffusion
- Perfusion (Correct answer)
- Distribution
Correct answer: Perfusion
Perfusion refers specifically to the passage of embalming fluid from the capillaries into the surrounding tissue cells and interstitial spaces to achieve preservation.
Question 6: What is the primary reason a mortuary technician might use restricted cervical injection rather than a standard single-point injection?
- To avoid disturbing facial features when the head has been reconstructed
- To allow independent control of head and body embalming when circulation is compromised (Correct answer)
- To reduce the total volume of fluid needed for the case
- To embalm only the torso while leaving the limbs unembalmed
Correct answer: To allow independent control of head and body embalming when circulation is compromised
Restricted cervical injection isolates the head's circulation so that injection pressure and fluid concentration can be adjusted independently for the cranial region versus the rest of the body.
Question 7: Which instrument is used to create a channel through tissue to reach remote or difficult-to-distribute areas during embalming?
- Grooved director
- Aneurysm hook
- Hypodermic trocar (Correct answer)
- Embalming machine needle injector
Correct answer: Hypodermic trocar
A hypodermic trocar is used to inject preservative solution hypodermically into areas such as the face, hands, or feet that did not receive adequate arterial distribution.
CMT Embalming Techniques & Protocols 3
What is the purpose of 'pre-injection' fluid used before the primary arterial embalming solution?