3rd Quarter Embalming 2 Test 1 Flashcards
They are injected to disinfect, temporarily preserve and restore the dead human body without causing objectionable change in the tissues.
Vascular (arterial) fluids
Generally classified by index: (the number of grams of formaldehyde gas dissolved in 100 ml of water; usually given in a percentage).
Vascular (arterial) fluids
Arterial fluid classification by index
StrongMediumWeak
Having an index of 28 - 36. Causes a rapid tissue coagulation.Causes a definite degree of firmness, used most often on “special cases.” (decomposition, edema, outgoing, drowning, etc.)37% by weight and 40 % by volume
Strong (high)
Having an index of 19 - 27.Sometimes referred to as semi-firming or cosmetic fluid. (Oil based / cosmetic fluid).Results in a moderate firming of tissues. Normal Cases
Medium (cosmetic arterial fluid)
Any fluid with an index of 10 - 18. Produces a minimum firmness of tissues.Infant cases or adults 80 lbs or less.An index of 8 is the lowest that it would go.
Weak
Chemical which inactivates saprophytic bacteria, renders unsuitable for nutrition the media upon which bacteria thrive, and which will arrest decomposition by altering enzymes of the body as well as converting the decomposable tissue to a form less susceptible to decomposition.
PRESERVATIVE
- Inactivated the chemical group of proteins (muscles)2. Inhibits further decomposition3. Inactivates some enzymes4. Kills some microorganisms – not all5. Destroys odorsThese are actions or methods of __________
preservative chemicals:
General formula (R-CHO) common name Formaldehyde.
Aldehydes
HCHO or CH 2 0In its free state it is a gas – soluble in water which forms a formula. Water is the universal solvent. Every solvent has a different saturation rate.
Formaldehyde (methanol)
Colorless gasHas an irritating and unpleasant odor – pungent Freely soluble in water Combines with tissue protein Is a MONOALDEHYDE (one functional aldehyde group; H-“CHO”)These are characteristics of ___________
formaldehyde
Formaldehyde is produced by the
partial oxidation of methylalcohol (methanol)
a dehydrating chemical
formaldehyde
another member of the formaldehyde family that consists of two functional aldehyde grouops
Gluteraldehyde
Gluteraldehyde is classified as a…..
dialdehyde
Gluteraldehyde reacts with…..
protein over a wide pH range
Rigor mortis is a post mortem chemical change with a pH of….
5
general formula R-OH with name ending in “-OL”
alcohols
Two members of the alcohol family
Methyl alcoholEthyalcohol
Methanol or wood alcohol
Methyl alcohol
Used commercially to manufacture formaldehydeAntipolymerizing agent (Added to prevent poloritization)
Methyalcohol
(ethanol or grain alcohol)
Ethyalcohol
obtained by the distillation of coal tar. Formula:
Phenol
uses of Phenol in the prep room
cauterizerbleaching agent
phenol when used to prevent leakage on embalmed bodies would be a…..
cauterizer
phenol when injected, not used as a surface application would be a….
bleaching agent
Chemicals added for the purpose of destroying disease causing microorganisms.
Supplementary GERMICIDES
2 examples of supplementary germicides
Glutaraldehyde Quaternary ammonium compounds
better disinfectant used as a supplementary germicide.
Glutaraldehyde
agents that are usually used for disinfection of skin, oral, nasal cavities, and instruments.EXAMPLES: Benzalkonium Chloride & Zephrian Chloride
Quaternary ammonium compounds
Chemicals which retard the tendency of blood to become more viscous by natural postmortem processes or prevent adverse reactions between blood and other embalming chemicals.
ANTICOAGULANTS
This process is primarily accomplished by breaking down the calcium in the blood and water. Also known as water conditioners or water softeners. These chemicals help keep blood in a liquid state.
ANTICOAGULANTS
Examples of anticoagulants:
Sodium citrateSodium salt of EDTA
EDTA stands for….
EthylenediaminetetrasodiumacetateNOT FOR TESTING PURPOSES
Has dual purpose in the embalming process. White, odorless, crystalline or granular material is often used for its anticoagulation. This compound inactivates calcium in the blood as well as in the water supply. W/O calcium, blood coagulation does not occur.
Sodium citrate
2nd chemical that has dual purpose in the embalming process. Very effective sequestering or chelating agents, means – they are readily combined with calcium ions to prevent blood coagulation and also to remove hardness chemicals from the water supply.
Sodium salt of EDTA
Liquids that serve as a solvent for the numerous ingredients that are incorporated into embalming fluids.They must serve as the carrier of the components found in the arterial solution.
vehicle
The most common vehicle used for embalming chemicals is ____________
water
________ will also serve as a _______.
alcoholsvehicle
any solution in which alcohol is the vehicle is known as a _____.
tincture
most common use of alcohol as a vehicle would be ____________
cavity fluid
Chemicals having the capability of displacing an unpleasant odor or of altering an unpleasant odor so that it is converted to a more pleasant odor.
PERFUMING AGENTS OR MASKING AGENTS
Examples of perfuming agents
Methylsalicylate (oil of wintergreen)Benzaldehyde (oil of almonds)Oil of sassafrasOil of cloves
Perfuming agents _______________ the effects that formaldehyde has on the operator.
do not eliminate
Substances which will, upon being dissolved, impart a definite color to the embalming solution and/or tissues.
DYES (coloring agents)
Classifications of Dyes (coloring agents)
Cosmetic (active)Non-cosmetic (inactive)
will impart a color to the body tissue
cosmetic dye (active)
will stain the concentrated arterial fluid
non-cosmetic dye (inactive)
examples of dyes
- Eosin - red2. Ponceau red - red3. Erythrosine - brown-red tint.
A chemical that reduces the molecular cohesion of a liquid so that it can flow through smaller apertures.
surfactants
surfactants are also called…
surface tension reducerswetting agentssurface active agents
Surfactants are used in __________________________
promoting fluid diffusion
chemicals in dishwashing detergents that prevent spots on glasses
surfactants
example of surfactants
Sulfonate oils
An example of sulfonate oils is what?
sodium lauryl sulfate (coconut oil)
This is the 2nd definition for___________.Chemicals which control the rate and extent of the embalming operation.
Modifying Agents
Types of modifying agents
humectantsbuffers
A chemical that increases the ability of embalmed tissue to retain moisture (chemical that helps to control dehydration)
Humectants (moisture retainers)
examples of buffers
Boraxcitrates sodium salt of EDTA sodium phosphates
Chemicals used as humectants:
a. Glycerol – thick substance, Contains 3 OH b. Sorbitol- Contains 5 OH c. Lanolin’s – emollient, massage stuff, liquid based.d. Glycols – has 2 OH groups – active ingredients in radiator fluid.
Name 3 chemicals used as humectants that are part of the alcohol family.
GlycerolSorbitolGlycols
Chemicals that will affect the acid-base balance (pH) within embalming solutions and in the embalmed tissue.
Buffers
- Preservatives (alcohols, aldehydes, phenol)2. Germicides3. Vehicle (primarily alcohols)4. Perfuming agentsThis is the composition of _____________
cavity fluid