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Chapter 27: Wound Infections
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1
A localized collection of pus and infecting organisms surrounded by body tissue and devoid of blood vessels may best be described as a(n)
A)abscess.
B)granuloma.
C)lesion.
D)lymph tissue.
2
Anaerobic conditions in wounds are created by the presence of
A)dead tissue.
B)blood infiltrates.
C)foreign material.
D)A and C only are correct.
E)A, B and C are correct.
3
Staphylococcus aureus is the most common cause of wound infections because
A)it is so commonly carried by humans.
B)it is readily communicable.
C)it possesses multiple virulence factors.
D)All of the above are correct.
E)A and C only are correct.
4
Staphylococcus aureus strains that have become resistant to methicillin due to modified penicillin-binding proteins are referred to as
A)PRSAs.
B)MRSAs.
C)VRSAs.
D)SAMRs.
5
Resistance characteristics for many microorganisms are frequently obtained through
A)plasmid transfer.
B)normal evolution.
C)RNA exchange.
D)none of the above.
6
Streptococcus pyogenes strains that are considered to be "flesh-eating" produce which of the following extracellular products?
A)exotoxin A and exotoxin B.
B)superantigen causing streptococcal toxic shock.
C)Both A and B are correct.
D)Neither A and B is correct.
7
Infections due to Pseudomonas aeruginosa are so difficult to treat because of
A)where they are found.
B)how they are spread.
C)their multiple antibacterial resistance patterns.
D)none of the above.
8
This anaerobic, spore-forming Gram-positive rod-shaped bacterium is the causative agent of "lock-jaw."
A)Staphylococcus aureus.
B)Clostridium tetani.
C)Clostridium perfringens.
D)Pseudomonas aeruginosa.
9
Gas gangrene is
A)contagious.
B)caused by Gram-negative bacteria.
C)caused by anaerobic organisms in a neglected wound.
D)seldom medically significant.
10
This organism is responsible for most of the infections resulting from the bites of animals.
A)Pasteurella multocida.
B)Bartonella henselae.
C)Streptobacillus moniliformis.
D)Bacteroides
11
This disease is typically characterized by local lymph node enlargement.
A)tetanus.
B)gas gangrene.
C)"rose gardener's disease".
D)cat scratch disease.
12
Sporothrichosis is caused by Sporothrix schenckii which is a
A)bacterium.
B)alga.
C)fungus.
D)virus.
13
This organism, often a member of the normal flora, may easily become pathogenic in a host receiving antimicrobial treatment.
A)Sporothrix schenckii.
B)Pasteurella multocida.
C)Streptobacillus moniliformis.
D)Candida albicans.
14
This organism is less virulent than other members of its genus, but it can form biofilms on blood vessel catheters and other prosthetic devices.
A)Staphylococcus aureus.
B)Staphylococcus epidermidis.
C)Staphylococcus pyogenes.
D)none of the above.
15
This organism produces pigments that may color infected wounds green.
A)Staphylococcus aureus.
B)Clostridium tetani.
C)Streptococcus pyogenes.
D)Pseudomonas aeruginosa.
16
The exotoxin produced in cases of lock jaw is referred to as
A)respiratory toxin.
B)tetanospasmin.
C)perfringen toxin.
D)Toxin A.
17
Wounds expose components of tissue normally protected from the outside world by skin or mucous membranes, such as
A)Fibrinogen.
B)Lysozyme.
C)epithelial cells.
D)keratin.
18
Organisms termed pyogenic are those characterized by
A)fever.
B)pus.
C)an antibody response.
D)none of the above.
19
This protein is produced by Staphylococcus aureus and usually not by other staphylococci.
A)fibronectin.
B)fibrin.
C)coagulase.
D)none of the above.
20
This is a more appropriate name for the historical "flesh-eating" disease.
A)necrotizing fasciitis.
B)cystitis.
C)gas gangrene.
D)streptococcal sepsis.
21
Facultative anaerobes compete well with other soil bacteria in wounds mainly for the following reason.
A)Facultative anaerobes produce a large variety of digestive enzymes.
B)Facultative anaerobes are opportunistic pathogens.
C)Wounds provide the proper nutrients for facultative anaerobes.
D)Wounds are aerobic, favoring facultative anaerobes.
E)Wounds are anaerobic, favoring facultative anaerobes.
22
The deadly effects of tetanus are best treated with immunizations that block the following feature of Clostridium tetani.
A)The nerotoxin.
B)Its digestive enzymes.
C)Its surface antigens.
D)Its cell wall components.
E)Both C and D.
23
Research studies show that excessive hand washing with warm soapy water favors the growth of Staphylococcus aureus on the hands. This can create a public health problem for people in the following career that requires regular hand washing.
A)Nursing.
B)Elderly care worker.
C)Food handler.
D)Childcare worker.
E)All of the above.
24
Amputation is a recommended treatment for which of the following wound infections?
A)Tetanus.
B)Necrotizing fasciitis.
C)Staphylococcal wound infections.
D)Pasteurella bite wound.
E)Cat scratch fever.
25
Hyperbaric treatment is very effective in treating gas gangrene for the following reason.
A)The treatment starves Clostridium perfringens.
B)The treatment favors the growth of normal flora living in the tissues.
C)The low oxygen environment produced by the treatment kills Clostridium perfringens.
D)The large amount of oxygen stops the growth of Clostridium perfringens.
E)None of the above is the correct reason.





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