Microbiology (Main): Difference between revisions

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== Gram Negatives ==
== Gram Negatives ==
#Cocci
===Cocci===
##Neisseria  
#Neisseria  
###meningitidis (meningococcus)
##meningitidis (meningococcus)
###[[Neisseria Gonorrhoeae|gonorrhoeae]] (gonococcus)
##[[Neisseria Gonorrhoeae|gonorrhoeae]] (gonococcus)
##Moraxella
#Moraxella
#Rods
##Lactose Fermenters (see table)
##Non-Lactose Fermenters (see table)


===Lactose Fermenters===
===Rods===
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===Non-Lactose Fermenters===
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Revision as of 06:57, 20 February 2014

Background

  • Culture and gram stain results

Gram Negatives

Cocci

  1. Neisseria
    1. meningitidis (meningococcus)
    2. gonorrhoeae (gonococcus)
  2. Moraxella

Rods

Lactose Fermenters
Indole
morphology

E. Coli

+
flat
Klebsiella - muccoid
Enterobacter -
muccoid
Citrobacter - flat
Arizona -


Non-Lactose Fermenters Characteristics

Pseudomonas

usually strict aerobes, oxidase +, small
Salmonella, Shigella
Acinetobacter coccobac
Proteus
swarming
H. Flu
tiny, chocolate agar
Pasteurella

Gram Positives

  1. Cocci
    1. Clusters
      1. catalase + Staph sp
      2. coagulase + S. aureus
      3. coagulase - S. epidermidis
    2. Pairs/chains -
      1. catalase - Strep sp.
  2. Rods

Rods

Rods

Cult
Morphology

Listeria

Small

Aero
tumbling
Diphtheroids
Small Anaero
pallisades
Actinomyces
Small Anaero
Branching
Propionibac
Small Anaero
clumps/pleo
Lactobacillus
Variable Both
may chain
Clostridium
Large Anaero
Spores
Bacillus Large Aero Spores

Anaerobes

  1. Origin - gut, mouth, head/neck (50% of chronic sinusitis), lung, female gu tract
  2. Cant grow unless culture specifically asked. 3% of bacteremia, <1% of cystitis
  3. Bacteroides (B.frag GNR) (Peptostreptococus GPC) (P. Acnes GPR), Clostridium GPR)

Source

7/2/09 PANI