UAMS MICRO CASE STUDY MODULE 1
EXAM QUESTIONS AND ANSWERS
WELL ELABORATED!!!
What follow-up procedure must be performed when a rapid bacterial antigen
test for Group A Streptococcus (GAS) yields a negative result?
✔✔ Accept the rapid test result and set up a culture for GAS (throat culture
remains the gold standard to rule out false negatives).
Which diagnostic test is considered the most reliable for definitively
determining the causative agent in a case of meningitis?
✔✔ Cerebrospinal Fluid (CSF) Culture
What type of clinical fluid is collected via an Arthrocentesis procedure?
✔✔ Joint Fluid (Synovial fluid)
What type of clinical fluid is collected via a Paracentesis procedure?
✔✔ Ascites Fluid (Peritoneal fluid)
What type of clinical fluid is collected via a Thoracentesis procedure?
✔✔ Pleural Fluid (Chest/lung cavity fluid)
What type of clinical fluid is collected via a Tympanocentesis procedure?
✔✔ Middle Ear Fluid (Eardrum aspirate)
What specimen has the highest priority? Sputum, Normally sterile body fluids
(CSF, Joint), Stool, Urine -ANSWER✔✔Normally Sterile Body Fluids (CSF,
Joint)
What is the purpose of transport media? -ANSWER✔✔-prevents drying of the
specimen
-kills unwanted organisms in the specimen
-prevents pH changes in the specimen
, -Keeps organisms alive
Whic microscope objective is used to examine and enumerate host cells? -
ANSWER✔✔10X
Which microscope objective is used to examine and enumerate bacteria? -
ANSWER✔✔100X (Oil)
What gram stain smear of a sputum indicates a high quality specimen? -
ANSWER✔✔Many PMNs and few/no epithelial cells
What does the presence of blue host cells in a gram stained smear indicate? -
ANSWER✔✔the smear was underdecolorized
Chocolate agar -ANSWER✔✔non-selective
Blood agar -ANSWER✔✔non-selective and differential
PEA agar -ANSWER✔✔selective
CNA agar -ANSWER✔✔Selective
MacConkey agar -ANSWER✔✔selective and differential
EMB agar -ANSWER✔✔selective and differential
EXAM QUESTIONS AND ANSWERS
WELL ELABORATED!!!
What follow-up procedure must be performed when a rapid bacterial antigen
test for Group A Streptococcus (GAS) yields a negative result?
✔✔ Accept the rapid test result and set up a culture for GAS (throat culture
remains the gold standard to rule out false negatives).
Which diagnostic test is considered the most reliable for definitively
determining the causative agent in a case of meningitis?
✔✔ Cerebrospinal Fluid (CSF) Culture
What type of clinical fluid is collected via an Arthrocentesis procedure?
✔✔ Joint Fluid (Synovial fluid)
What type of clinical fluid is collected via a Paracentesis procedure?
✔✔ Ascites Fluid (Peritoneal fluid)
What type of clinical fluid is collected via a Thoracentesis procedure?
✔✔ Pleural Fluid (Chest/lung cavity fluid)
What type of clinical fluid is collected via a Tympanocentesis procedure?
✔✔ Middle Ear Fluid (Eardrum aspirate)
What specimen has the highest priority? Sputum, Normally sterile body fluids
(CSF, Joint), Stool, Urine -ANSWER✔✔Normally Sterile Body Fluids (CSF,
Joint)
What is the purpose of transport media? -ANSWER✔✔-prevents drying of the
specimen
-kills unwanted organisms in the specimen
-prevents pH changes in the specimen
, -Keeps organisms alive
Whic microscope objective is used to examine and enumerate host cells? -
ANSWER✔✔10X
Which microscope objective is used to examine and enumerate bacteria? -
ANSWER✔✔100X (Oil)
What gram stain smear of a sputum indicates a high quality specimen? -
ANSWER✔✔Many PMNs and few/no epithelial cells
What does the presence of blue host cells in a gram stained smear indicate? -
ANSWER✔✔the smear was underdecolorized
Chocolate agar -ANSWER✔✔non-selective
Blood agar -ANSWER✔✔non-selective and differential
PEA agar -ANSWER✔✔selective
CNA agar -ANSWER✔✔Selective
MacConkey agar -ANSWER✔✔selective and differential
EMB agar -ANSWER✔✔selective and differential
