Gram positive bacteria: Difference between revisions
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##Coagulase Positive: [[Staph aureus]] | ##Coagulase Positive: [[Staph aureus]] | ||
###Always consider a blood culture positive for Staphylococcus aureus to be true bacteremia (and not a contaminant) due to the danger of delaying treatment<ref>Antibiotic Therapy for Positive Blood Cultures. Perez-Jorge EV, et al. Antimicrobe. http://www.antimicrobe.org/new/e38rev2.asp</ref> | ###Always consider a blood culture positive for Staphylococcus aureus to be true bacteremia (and not a contaminant) due to the danger of delaying treatment<ref>Antibiotic Therapy for Positive Blood Cultures. Perez-Jorge EV, et al. Antimicrobe. http://www.antimicrobe.org/new/e38rev2.asp</ref> | ||
##Coagulase Negative: [[Staph epidermidis]] | ##Coagulase Negative: | ||
###[[Staph epidermidis]] | |||
####Most common cause of catheter-related bloodstream infections | |||
####Most common skin contaminant found in blood cultures | |||
####[[S. saprophyticus]]: [[UTI]]s in women | |||
####[[S. lugdunensis]]: [[endocarditis]], [[meningitis]], and [[Skin and Soft Tissue Infections]] | |||
####[[S. haemolyticus]]: [[endocarditis]], [[meningitis]] | |||
#Pairs/chains ([[Strep Species]]) | #Pairs/chains ([[Strep Species]]) | ||
##catalase - | ##catalase - | ||
Revision as of 05:51, 22 April 2014
Cocci
- Clusters (Staph Species)
- Coagulase Positive: Staph aureus
- Always consider a blood culture positive for Staphylococcus aureus to be true bacteremia (and not a contaminant) due to the danger of delaying treatment[1]
- Coagulase Negative:
- Staph epidermidis
- Most common cause of catheter-related bloodstream infections
- Most common skin contaminant found in blood cultures
- S. saprophyticus: UTIs in women
- S. lugdunensis: endocarditis, meningitis, and Skin and Soft Tissue Infections
- S. haemolyticus: endocarditis, meningitis
- Staph epidermidis
- Coagulase Positive: Staph aureus
- Pairs/chains (Strep Species)
- catalase -
Rods (Bacilli)
| Organism | Cult | Morphology | |
|
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 |
Clinical Identification Chart
Table Overview
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See Also
Source
- ↑ Antibiotic Therapy for Positive Blood Cultures. Perez-Jorge EV, et al. Antimicrobe. http://www.antimicrobe.org/new/e38rev2.asp