Deck 77: Infection Control

Question 1

A phenotypic technique that examines an organism's susceptibility to bacterial peptides (proteins)is:

A)biotyping.
B)antibiograms.
C)serotyping.
D)bacteriocin typing.

Answer 1

D
Classic phenotypic techniques include biotyping (analyzing unique biologic or biochemical characteristics),antibiograms (analyzing antimicrobial susceptibility patterns),and serotyping (serologic typing of bacterial or viral antigens,such as bacterial cell wall [O] antigens).Bacteriocin typing,which examines an organism's susceptibility to bacterial peptides (proteins),and bacteriophage typing,which examines the ability of bacteriophages (viruses capable of infecting and lysing bacterial cells)to attack certain strains,have been useful for typing P.aeruginosa and S.aureus,respectively.These techniques,however,are not widely available.

Question 2

An infection acquired by a hospitalized patient that was not present when he or she entered the hospital is referred to as a(n)_____ infection.

A)autonomous
B)nosocomial
C)opportunistic
D)septic

Answer 2

B
Nosocomial infections are those that patients acquire while in the hospital setting.

Question 3

The classification of a surgical wound as dirty refers to a:

A)lack of cleanliness of the surgical instruments.
B)surgical wound in an emergency setting in which the cleansing protocol was not followed.
C)surgical wound that has become grossly infected.
D)large number of contaminating organisms at the wound site.

Answer 3

D
Surgical wounds are classified as clean,clean-contaminated,contaminated,or dirty,depending on the number of contaminating organisms at the site.Bowel surgery is considered dirty,for example,whereas surgery for a total hip replacement is considered clean.

Question 4

Surveillance cultures are in place to monitor infections implicated in cooling towers or hot water sources.Health care professionals are interested in limiting outbreaks with which organism in water supplies?

A)P.aeruginosa
B)Legionella spp.
C)Shigella spp.
D)Cyclospora spp.

Question 5

A patient should be placed in a private room that has monitored negative air pressure if he or she is infected with which organism?

A)H.influenzae
B)Mycoplasma pneumonia
C)Parvovirus B19
D)Mycobacterium tuberculosis

Question 6

A phenotypic technique of typing microbial strains that consists of analyzing antimicrobial susceptibility patterns of the organism of interest is:

A)biotyping.
B)antibiograms.
C)serotyping.
D)bacteriophage typing.

Question 7

A phenotypic technique that examines the ability of bacteriophages,which are viruses capable of infecting and lysing bacterial cells,to attack certain strains is:

A)biotyping.
B)antibiograms.
C)bacteriocin typing.
D)bacteriophage typing.

Question 8

A phenotypic technique of typing microbial strains that consists of analyzing unique biologic or biochemical characteristics of the organism of interest is:

A)biotyping.
B)antibiograms.
C)serotyping.
D)bacteriophage typing.

Question 9

A 76-year-old man attends a meeting at his condominium association where many of his neighbors are sick with respiratory symptoms.He later develops a Haemophilus influenzae infection,which is classified as a _________ infection.

A)nosocomial
B)hospital-acquired
C)community-acquired
D)heath care-related

Question 10

A phenotypic technique of typing microbial strains that consists of serologic typing of bacterial or viral antigens,such as bacterial cell wall antigens of the organism of interest,is:

A)biotyping.
B)antibiograms.
C)serotyping.
D)bacteriophage typing.