Deck 78: Infection Control

Question 1

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.

Answer 1

C
Classic phenotypic techniques include serotyping (serologic typing of bacterial or viral antigens, such as bacterial cell wall [O] antigens), biotyping (analyzing unique biologic or biochemical characteristics), and antibiograms (analyzing antimicrobial susceptibility patterns).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

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.

Answer 2

B
Classic phenotypic techniques include antibiograms (analyzing antimicrobial susceptibility patterns), biotyping (analyzing unique biologic or biochemical characteristics), and serotyping (serologic typing of bacterial or viral antigens, such as bacterial cell wall [O] antigens).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 3

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

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

Answer 3

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 4

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 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) Haemophilus influenza
B) Mycoplasma pneumonia
C) Parvovirus B19
D) Mycobacterium tuberculosis

Question 6

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

Question 7

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.

Question 8

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 influenza infection, which is classified as a _________ infection.

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

Question 9

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 10

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) Pseudomonas aeruginosa
B) Legionella spp.
C) Shigella spp.
D) Cyclospora spp.