Gram Positive Bugs Flashcards
Staph is grouped how?
clusters/clumps like grapes
Catylase associated with what kind of bacteria?
staph aureas
Strep grouped how?
Bunches in lines or in pairs
Buzz word for Diphtheria?
grey pseudomembrane
Where do we see anthrax?
soil, sheep, goats, cattle
bioterrism
Classifications of Bacteria
Reaction to certain types of stains
Physiologic structure
What are the different types of shapes in bacterial infetions?
5
Bacillus are Rod shaped Coccus is sphere shaped Spirillum are spiral shaped Streptococci are cocci in chains Staphylococci are cocci in clusters
Name the gram positive bacteria we covered?
6
- Staphylococcus sp.
- Streptococcus sp.
- Clostridium Botulinum (anerobe)
- Corynebacterium Diptheriae (Diphtheria)- grey pseudomembrane
- Clostridium Tetanus (Tetanus)
- Bacillus antracis (Anthrax)-soil, sheep, goats, cattle
Stpah aureus is the only staph that produces what?
only one that produced coagulase)-produces exotoxins
Name three things the exotoxins in staph aureus cause?
- food poisening(GI)
- scalded skin syndrome(causes skin to slough off
- toxic shock syndrome- pinpoint rash on ab
What instances should we worry about Staph aureus infection?
4
foley/catheter iv line infections prothetic valves knee replacement etc
What is s. saprophyticus associated with?
UTIs
Strep Pyogenes is what kind of strep?
Lancefield antigen?
Hemolytic?
Group A beta-hemolytic strep
Positive
Yes, partially
Streptococcus agalactiae is what kind of Strep?
What is it mainly known to cause?
Lancefield anitgen?
Hemolytic?
Group B
neonatal meningitis in babies
Positive
Yes
Streptococcus pneumoniae (Pneumococcus) is what kind of strep?
What is it mainly known to cause?3
Lancefield anitgen?
Hemolytic?
GP diplococci
In adults:
CAP!! sudden onset shaking chills, rust colored sputum,
In chidlren: OM, sinusistis
NO
NO
Streptococcus viridans is what kind of strep?
What is it mainly known to cause?
3
Where is strep viridans normal flora in your body?
Lancefield anitgen?
Hemolytic?
Alpha hemolytic
Dental infections
Endocarditis (prothetic valve)
Abcesses
GI
NO
Yes, partially (green)
Enterococcus is what kind of strep?
Where does it like to hang out (normal flora)?
What is it resistance to?
Lancefield?
Hemolytic?
(Group D strep)
Bilius areas, gall bladder/liver etc
vanco and amp.
Yes
Yes
Common Bacterial Infections
caused by gram pos bacteria?
3
Skin-first think staph aureus
Soft tissue
Bone
What do localized infections not do that differentiates them from systemic infecitons?
Organism does not spread through the lymphatic system or reach the bloodstream
-infection subsides due to host defenses
Which pathways do bacteria take to become a generalized or systemic infection?
3
via tissues, lymphatic system, bloodstream
Examples of localized infections? 2
Cellulitis
Erysipelas- strep
Potentially lethal infections that were noted?
3
Necrotizing fasciitis (flesh eating disease)
Myonecrosis (gas gangrene or Clostridial myonecrosis)
Pyomyositis (abscess from bacterial infection of skeletal muscles)
What do we need to make sure we do with cellulitis infections?
mark it with a sharpy, treat cellulitis aggressively
Most staphylococcus are harmless and reside where?
skin and mucous membranes