Aseptic/Microbiology (Complete) Flashcards
What is the main difference between eukaryotes and prokaryotes?
E= nucleus, no cell wall P= no nucleus, have a cell wall
How do bacteria divide?
By binary fission
Are bacteria Prokaryotic or Eukaryotic?
Prokaryotic
Can a virus be killed by antibiotics?
NO
What is the smallest microorganism?
Viruses
Where do viruses live?
In a living host
Are fungi eukaryotic or prokaryotic?
eukaryotic
What is the common shape of fungi?
thread like strands called hyphae
Microorganisms cause disease by what two basic mechanisms?
Invasion of tissue
or
Production of toxins
What is a bodies first line of defense?
Skin and mucous membranes
What is the bodies second line of defense?
Phagocytic cells
What happens in the “Gram stain” procedure?
Heat-killed bacteria are exposed to the purple dye crystal violet and iodine
What does it mean if there is a negative gram stain?
No organism seen. - No bacterial infection
What colour are bacteria in a positive gram-positive stain test?
Purple
What colour are bacteria in a positive gram-negative stain test?
Pink
What shape is cocci?
Round
What shape is bacilli?
Rod shaped
Antimicrobials can be classified by which three different schemes?
Effects on cells
Range of activity
Sites of activity
What two classifications can antimicrobials be divided into based on their effects on targeted cells?
Bactericidal
Bacteriostatic
What are bactericidal drugs?
They will only kill cells that are actively growing
What are bacteriostatic drugs?
They inhibit the growth of cells
Is staphylococcus aerobic or anerobic?
Aerobic
What shape is staphyloccus?
Cocci
Is staphylococcus gram positive or gram negative?
Gram positive
What does staphylococcus cause on the body?
Boils and absesses
How do staphylococcus get into the body?
Through cuts
What was the first effective antibiotic against staphylococcus?
Penicillin
Is penicillin used today for staphylococcus infections?
No, because of bacterial resistance. Now we use stronger antibiotics like vancomycin
Is streptoccus aerobic or anaerobic?
Aerobic
Is streptococcus gram positive or gram negaitve?
Gram positive
What shape is streptococcus?
Cocci
What does streptococcus cause?
Pneumonia, scarlet fever.
What antibiotics are commonly used to treat streptococcus infections?
penicillin
erythromycin
clindamycin
is bacillus aerobic or anaerobic?
Aerobic
Is bacillus gram positive or gram negaitve?
Gram positive
What shape is bacillus?
Rod shaped
What does bacillus cause?
Anthrax, TB, food poisoning
Is E.Coli gram positive or gram negative?
Gram negative
What shape is E.Coli?
Rod shaped
Are E.Coli aerobic or anaerobic?
Anaerobic
What does E.Coli cause in the body?
Food poisoning, UTIs, some pneumonia
Are pseudomonas aerobic or anaerobic?
Aerobic
Are pseudomonas gram positive or gram negative?
Gram negative
What shape are pseudomonas?
Rod shaped
What does pseudomonas cause in the body?
Antibiotic resistant pneumonia
Are brucella gram positive or gram negative?
Gram negative
What shape are brucella?
Cocci
Are neisseria aerobic or anaerobic?
Aerobic
Are neisseria gram negative or gram positive?
Gram negative
What shape are neisseria?
Cocci
What does neisseria cause in the body?
Gonorrhea, menigitis
What antibiotics are used to treat neisseria?
Cephalosporins
Quinolones
Penicillins
What does HSV-1 mean?
Herpes simplex virus 1
What does HSV-2 mean?
Herpes simplex virus 2
What is HSV-1 commonly associated with?
Outbreaks of the face, including cold sores.
What is HSV-2 commonly associated with?
Genital herpes
What happens when a person has hepatitis?
Injury to the liver characterized by the presence of inflammatory cells in the liver tissue
What causes hepatitis?
Viruses, alcohol, toxins, acetaminophen
How many different strains of the hepatitis virus are there?
8 different strains
What is Mycology?
The scientific study of fungi
What is coccidioidomycosis also known as?
Valley fever
Where are aspergillus found?
in starchy foods, and grow in or on many plants and trees
What is cryptococcus neoformans?
encapsulated yeast-like fungus
Where does cryptococcus neoformans live?
In both plants and animals
How is cryptococcus neoformans treated?
fluconazole
What does LAFH stand for?
Laminar airflow hood
What ISO class does a laminar airflow hood create?
Class 5
What does ISO class 5 mean?
No more than 100 particles of 0.5 micron size or larger per cubic foot of air.
What airflow hood is used to prepare cytotoxic, antineoplastic, and chemotherapy drugs?
BSC class 2
Where is the HEPA filter in a vertical laminar airflow hood?
The top of the hood
Where is a HEPA filter on a horizontal airflow hood?
The back of the hood
What two parts is the clean room divided into?
Ante room and the buffer room
What is the ante room?
Where aseptic hand washing and garbing is performed, where supplies is gatheres and labels are made.
What is the ISO minimum requirement for the ante room?
ISO 8 or better
What is the buffer room?
Where the LAFW or BSC are located.
What does LAFW
Laminar Airflow Workbench
What is the ISO minimum requirement for the buffer room?
ISO 7 or better
What is an ampoule?
A small glass container which contains a single dose of a drug.
When do you NEED to use a filter needle?
When putting fluid from an ampoule into a IV bag
Can filter needles be used on one direction, or both directions?
One direction.
What is the hole of the needle called?
The lumen
What fluids are there universal precautions on?
Blood Semen Vaginal secretions Synovial fluid CSF
What does HIV stand for?
Human Immunodeficiency Virus
What does HBV stand for?
Hepatitis B Virus
What does HCV stand for?
Hepatitis C Virus
What does HCP stand for?
Health Care Personnel
What does PEP stand for? What is it?
Post Exposure Prophylaxis - Action taken after a worker has been exposed to HIV, HBV, or HCV.
What does ISO stand for?
International Organization of Standardization
What are critical sites?
Any location that is exposed and cal allow intrusion of microorganisms
What volume is considered small volume parenteral?
A solution volume of 100mL or less. Large is 500mL and up
What is bacteriostatic water?
Sterile water that contains a chemical that prevents the growth of bacteria in the vial
What chemical is used is bacteriostatic water?
Benzyl alcohol
Why is normal water not used in IVs?
It is too harsh on the body - will harm it
What size should a venting needle be?
25G
What does BSC stand for?!When is it used?
Biological Safety cabnet - Used for making chemo
How many times can you use a needle before it is no loger usable?
5 pokes
How is the PPE different for chemo preparations?
Double gloves, non-permeable gowns, goggles