Exam 4 - 28. Sterilization and Disinfection Flashcards
3
Death of a microorganism is the ______ of ability to reproduce.
4
Does micorbial death occur exponentially or all at once?
4
Probability of microbial killing is proportional to the _________ and to the ________.
6
What is sterilization?
6
What is disinfection?
6
What is antisepsis?
8
What are the hardest organisms to kill? What are the second hardest?
9
What does the suffix -cide mean?
9
What are microbistatic agents?
10
What are two differing factors in viruses that determine an organisms susceptbility?
10
What does mycobacteria have that protects it from some chemicals?
12
What are critical items? Do they need to be sterilized?
12
What are semicritical items? What kind of disinfectant is needed?
12
What are noncritical items? What kind of disinfectants are needed?
13
What does this describe?
– contaminated during patient care
– light handles, switches, x-ray equipment
– drawer handles, pens, telephones, doorknobs
13
What kind of disinfectant do you need for clinical contact items?
13
What kind of disinfectant is needed for clinical contact items?
13
What kind of surfaces are floors, walls, and sinks considered? What do you clean them with?
14
Are actively growing organisms or cultures more susceptible to killing than an older stagnant one?
14
What are two reasons why actively growing organisms are more susceptible to killing than older stagnant ones?
15
What are four properties of an organism’s environment that determine its susceptibility?