Chapter 13- Diagnosing Infectious Diseases

Chapter 13- Diagnosing Infectious Diseases

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

1.
Assuming that a clean-catch midstream urine
was processed in the Clinical Microbiology
Laboratory (CML), which one of the
following colony counts is (are) indicative of
a urinary tract infection?
A) 10,000 CFU/mL
B) 100,000 CFU/mL
C) >100,000 CFU/mL
D) both b and c
2.
Which one of the following statements is not
true about the disk-diffusion method of
antimicrobial susceptibility testing? (Note:
information about susceptibility testing can be
found on the CD-ROM that accompanies this
book.)
A) A pure culture of the organism is required.
B) It is also known as the “Kirby-Bauer test.”
C) The plate should be incubated in a CO2
incubator for 12 hours.
D)
The test should be performed in the exact
manner described by the Clinical and
Laboratory Standards Institute (CLSI).
3. Which one of the following statements about
cerebrospinal fluid (CSF) specimens is false?
A) They are collected only by physicians.
B) They are treated as STAT (emergency)
specimens in the laboratory.
C) They should always be refrigerated.
D) They should be rushed to the laboratory after
collection.
4. All clinical specimens submitted to the CML
must be:
A) properly and carefully collected.
B) properly labeled.
C) properly transported to the laboratory.
D) all of the above
5.
Which one of the following methods of
antimicrobial susceptibility testing is the most
accurate? (Note: information about
susceptibility testing can be found on the CD-
ROM that accompanies this book.)
A) agar dilution method
B) disk-diffusion method
C) macro broth dilution method
D) micro broth dilution method

Answer Key
1. D
2. C
3. C
4. D
5. A