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Intermicro
| Question | Answer |
|---|---|
| Gram-negative rods | E. coli, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa, Enterobacter aerogenes |
| Gram-negative diplococci | Neisseria gonorrhoeae, Neisseria meningitidis |
| Gram-positive cocci in clusters | Staphylococcus aureus, Staphylococcus epidermidis, |
| Gram-positive cocci in chains and pairs | Streptococcus pyogenes, Streptococcus pneumoniae, Enterococcus faecalis |
| Gram-positive rods | Clostridium difficile, Bacillus anthracis |
| How is Staph and Strep differentiated | Staph is catalase positive; Strep is catalase negative |
| How are Staph species differentiated | Staph aureus is coagulase positive; Staph epi is coagulase negative |
| In a hospital setting what Staph species is particularly dangerous | Staph aureus; MRSA-Methicillin Resistant Staph aureus |
| What is a selective agar for gram-positive bacteria | PEA |
| What is a selective agar for gram-negative rods | MAC |
| Name a beta-hemolytic group A Strep | Gram-positive cocci in chains; Strep pyogenes |
| Name an alpha-hemolytic Strep | Gram-positive cocci in chains; Strep pneumo |
| Name a gamma-hemolytic gram-positive bacteria | Gram-positive cocci; Enterococcus faecalis |
| What is particularly dangerous about Enterococcus faecalis | Gram-positive cocci; VRE-Vancomycin resistant Enterococcus |
| What media is used for N. gonorrhoeae and N. menigitidis | Modified Thayer Martin or Martin Lewis |
| What is dangerous about N. meningitidis | Gram- negative diplo; It is a biosafety level 2 organism |
| What are some diseases associated with Kleb. Pneumo | Gram-negative rod; Fatal pneumonia in debilitated patients; UTI and pneumonia; Gram-negative rod |
| What are some diseases associated with Proteus mirabilis | Gram-negative rod; Chronic UTI; Swarming colony growth |
| What are some notable features of Pseudomonas aeruginosa | Gran-negative rod; Grape-like odor; Most commonly encountered G- species other than Enterobacteriaceae; Causes opportunistic infections, community or hospital acquired |
| What is significant with Enterobacter arogenes | Gram-negative rod; May cause UTI, especially after catheterization |
| What is an interesting feature of Strep pyogenes | Gram-positive cocci in chains; One of the most aggressive pathogens encountered; Wounds, respiratory, urine |
| What are some diseases associated with Strep pneumo | Gram-positive cocci in chains; Pneumonia, SBE, pneumococcal meningitis |
| What gram-positive rod is associated with antibiotic-associated diarrhea | Gram-positive rod; Clostridium difficile |
| Why is C. diff danerous in the hospital setting | Gram-positive rod; Antimicrobial agents (ie: clidamycin) upsets normal flora of intestines and C. diff takes over |
| What gram-positive rod could be a dangerous bioterorist agent | Bacillus anthracis; large boxy gram-postive spore-forming rod; forms large, non-hemolytic medusa-head colonies on BAP |
| What biosafety level is Bacillus anthracis | Gram-positive rod; Biosafety level 3 |
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