Podcast
Questions and Answers
What temperature is the test tube incubated at for the coagulase testing of staphylococcus?
What temperature is the test tube incubated at for the coagulase testing of staphylococcus?
- 30°C
- 37°C (correct)
- 40°C
- 25°C
If no clotting is observed in the test tube after incubation at 37°C for an hour, what should be done next?
If no clotting is observed in the test tube after incubation at 37°C for an hour, what should be done next?
- Incubate for another hour at 45°C
- Examine at 30-minute intervals for up to 6 hours (correct)
- Add more test organism culture
- Examine the tube under a microscope
Why should citrated blood not be used for the coagulase test?
Why should citrated blood not be used for the coagulase test?
- It inhibits clot formation
- It causes false-negative results
- It can lead to false-positive results (correct)
- It accelerates the clotting process
Can coagulase testing be performed using growth from mannitol salt agar?
Can coagulase testing be performed using growth from mannitol salt agar?
How is a DNase test spot inoculation performed?
How is a DNase test spot inoculation performed?
What should be done after flooding a DNase test agar plate with 1N Hydrochloric Acid?
What should be done after flooding a DNase test agar plate with 1N Hydrochloric Acid?
What happens if Coagulase testing is performed with citrated blood?
What happens if Coagulase testing is performed with citrated blood?
Which agar type should not be used for Coagulase testing?
Which agar type should not be used for Coagulase testing?
What property of Staphylococcus aureus contributes to high infection rates and persistence despite treatment?
What property of Staphylococcus aureus contributes to high infection rates and persistence despite treatment?
Which of the following is a systemic illness associated with Staphylococcus aureus infections?
Which of the following is a systemic illness associated with Staphylococcus aureus infections?
What plays a role in determining the treatment for Staphylococcus aureus infections?
What plays a role in determining the treatment for Staphylococcus aureus infections?
How does Staphylococcus aureus evade host immune responses?
How does Staphylococcus aureus evade host immune responses?
Which of the following is NOT a factor in the pathogenesis of Staphylococcus aureus infections?
Which of the following is NOT a factor in the pathogenesis of Staphylococcus aureus infections?
What is the function of coagulase enzymes produced by Staphylococcus aureus?
What is the function of coagulase enzymes produced by Staphylococcus aureus?
Which toxin produced by Staphylococcus aureus disrupts the immune system by causing massive activation of host immune cells?
Which toxin produced by Staphylococcus aureus disrupts the immune system by causing massive activation of host immune cells?
In addition to causing skin and soft tissue infections, what else can Staphylococcus aureus infections lead to?
In addition to causing skin and soft tissue infections, what else can Staphylococcus aureus infections lead to?
What role do exotoxins produced by Staphylococcus aureus play in causing diseases?
What role do exotoxins produced by Staphylococcus aureus play in causing diseases?
Where can Staphylococcus aureus be found besides infecting humans?
Where can Staphylococcus aureus be found besides infecting humans?
