Antimicrobial Susceptibility testing
-To determine which antimicrobial agents might be effective in treating infections
-Need to disntinguish pathogens from commensals
-Generally disk diffusion or dilution
Reasons for Antimicrobial susceptibility
-Suspect a isolate is involved in pat...
Chapter 13: Antimicrobial Susceptibility testing 73 questions and answers
Antimicrobial Susceptibility testing - answer -To determine which antimicrobial agents might be effective in treating infections
-Need to disntinguish pathogens from commensals
-Generally disk diffusion or dilution
Reasons for Antimicrobial susceptibility - answer -Suspect a isolate is involved in patient infection
-Susceptibility against particular antimicrobial is uncertain
Group A strep - answer Susceptible to penicillin
Epidemiological Cut-off valves (ECV) - answer Helps identify emerging resistance
Factors to consider in susceptibility testing - answer - Body site from which the bacterium is isolated
- Presence of other organisms - Specimen quality
- Host status
Body Site - answer - Susceptibility test are not routinely performed on organisms isolated from an anatomic site for which they are normal inhabitants Ex: E. coli is normal in the GI tract and therefore would not be tested when isolated from a stool sample
Specimen Quality - answer - Pure cultures indicate good specimen quality
- Contamination is indicated if more than two species with greater than 10^5 colony forming units (CFU's)
Host status in susceptibility testing - answer - Normal flora may represent infection in immunocompromised patients
- Host may be allergic to drug so different choice is needed
Who makes the decision in selecting antimicrobials for testing and reporting - answer Laboratory scientist
Pharmacists
Physicians Therapeutic committee
Selecting antimicrobials for testing - answer - Plate size constraints
- FDA determines used and dosage
- Can be selected by Pharmacists, physicians, and medical technologists
- Interactions of drugs in pediatric patients (Tetracycline and tooth development)
- Outpatients have orally administered medications
Formulary - answer an official list of drugs approved for use by a hospital or group of physicians
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BRAINBOOSTERS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
