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VTNE

Chapter 10: Sanitization, Sterilization and Disinfection

QuestionAnswer
Antiseptic -applied to the surface of living ogrnaisms or tissue to stop or prevent the gowth of mircoggansisms
Asepsis- condition in which no living organisms are present
Bacterium- large group of single-cell microorganisms
Bacteriocidal- destroying bacteria
Bacteriastat- agent prevents the growth of bacteria
Carcinogenic- having the potential to cause cancer.-
Nosocomsinal- disease given at hospital
Stat- remain
Static- controlling/stoping
Virucidal- having the capacity to or tending to destroy or inactivate viruses
Microbial control- Using methods of sanitatzation, disfecttion and sterlization
Sterlization -complete elmiation or destruction of all forms of microbial life
Disfectiation- destrcution or removal of pathogens from nonliving objects by physical or chemical methods
Sanitization- reduction of microbial populations to levels that are considered safe
Effectivies of microbial control methods depend on- time, temp, concentration and prep, organisms, surface, method of application
Tranimison of pathogens- direct contact between the source and the host or indirect transimsion via and intermediate host(vector) or an object (fomite)
Colonization- occurs when pathogens are cultured from areas that are normally sterile in the absence of clinical signs of infection
Carriers- habors pathogens without displaying clicnal signs
Outbreak- 2 or more patients in the same ward are isolated with the same pathogen
Resistance- reuced or no activity to eliminate a pathogen in term of antibiotics
Stelization types HEAT AND COLD
Heat strlization -kills microbes by coagulation of cellar proteins(oven or flame, heat)
Cold sterization- (high level of sterlizaion) though chemical or ionizing raditiaon
How is stelrization best defined- the complete elmication of all forms of microbial life
disenfection is defined as the- destruction or rmevoal of pathogens from nonliving objects
Which are the most resistant bacterial species, reuqiring high temps to achiev total destruction- bacillus spp
Which method of sterlization kills microbes by coagulation of cellular proteins and microbes- heat sterlization
Which method of sterlization will directly or indirectly cause damage to genic material (dna or rna)- ionzing raditaion
Which method of sterlization disrupts the dna of microorganisms by changing the chemical structure preventing them from reproducing- ethylene oxide
Whihc method os assessing efficacy of sterlization directly determines the concentration of the most resistant mircoganisms- biological indicators
Disfecantc reduce the number of viable micrognaisms present on a apparatus to a level where they do not pose a threat to health which is called -kill count
Which of the following does not recue the efficacy of a diseinfectant- prior removal of organic material
Which disinfectant exert theri action though deactivation of energy producing enzymes, denurtaution of essential cell proteins and siruption of the cell membrane- quaternary ammonium compunds
List the following orgnaims from most to least resistance against physical and chemical agents- coccifa, myocbateria, fungi, vegetative bacteria
In gravity displamcnet autocalves, what is the length of time that is suggested from wrapped and textile items at 250F and 15psi- 30 min
Which disenfectatn is least stable in storage- halogens
Which disinfectant has a strong scent and leaves behind chemical residue- phenolics
An agent that stops or inhibits the growth of microorganisms but does not neccesalriy kill them contains the suffix- static
Which group of chemicals are all classified as sterliants- aldehydes, peracetic acid, ethylene oxide
Which type pf sterlization chamber requires extended periods of ventilation of up to 48 hrs- ethylene oxide
The minimum effective pressure in a autoclave is- 15 psi
Flash autoclave stelrization of nonpurous items at 270F is generally achieve in- 3 min
Which test evaluates pervacumed autoclaves for complete removal of air and uniform steam penetration- bowie dick test
Created by: Alex1324
 

 



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