Deck 61: 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 called

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

Answer 1

C
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 Pseudomonas aeruginosa and S. aureus, respectively; these techniques, however, are not widely available.

Question 2

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

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

Answer 2

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 Pseudomonas aeruginosa and S. aureus, respectively; these techniques, however, are not widely available.

Question 3

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

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

Answer 3

B
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 Pseudomonas aeruginosa and S. aureus, respectively; these techniques, however, are not widely available.

Question 4

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

A)the lack of cleanliness of the surgical instruments.
B)surgery wounds done in emergency settings where cleansing was not done.
C)a surgical wound that has become grossly infected.
D)the large number of contaminating organisms at the wound site.

Question 5

A phenotypic technique that examines the ability of bacteriophages (viruses capable of infecting and lysing bacterial cells) to attack certain strains is called

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

Question 6

Microorganisms are spread in hospitals through

A)direct contact in contaminated food or intravenous solutions.
B)indirect contact from patient to patient on the hands of health care workers.
C)inhalation of droplets.
D)vector-borne contact.
E)All of the above are correct.

Question 7

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

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

Question 8

An infection acquired by a hospitalized patient that was not present when they entered the hospital is referred to as

A)an autonomous infection.
B)a nosocomial infection.
C)an opportunistic infection.
D)septic introduction.