chap 10: hospital acquired G- Flashcards
the 4 W’s of hospital acquired infection
wind: pneumonia
water: urinary tract infection
wound and wires: intravenous lines
30% of hospital acquired infections result from gram ____ bacteria
negative
The most common group overall for hospital acquired infections include
E coli, Klebsiella, enterobacter
The 4 often highly resistant G- bac acquired in hospitals
Pseudomonas aeruginosa, Stenotrophomonas maltophilia, burkholderia cepacia
Pseudmonas Aeruginosa : two reasons its so important
1) it colonizes and infect sick, immunocomprosmised patients
2) the racsal is resistant to almost every antibiotic.
what pigments are produced by Pseudomas aeruginosa?
Pyoverdin: green flourecent pigment
pyocyanin: blue pigment
the smell produced by pseudomas aeruginosa+ metabolism
grape smell
oxidase positive
how virulent is PA?
weak, but if your immune system is compromised it can be deadly
Pseudomonas infection #1
pnneumonia
cystic fibrosis patients susceptible progressively destroys lungs
immunocompromised patients are highly susceptible
Pseudomonas aeruginosa infection #2
Osteomylitis
diabetic patients have increased risk of developing ulcers!!!!
intravenous drug users increased risk of osteomylitis of vertebrae or clavicle
children develop osteomylitic secondary to puncture wounds on foot. stepping on a nail IN TENNIS shoes is bad because the shoes contain bacteria
Pseudomonas aeruginosa infection #3
burn wound: sets up significant infections of burn wound—> fatal sepsis
Pseudomonas Aeruginosa infection #4
Sepsis
high mortality rate. transmitted by catheters most of the time
Pseudonomonas Aeruginosa infection #5
Endocarditis
Pseudomonas and Staph. A are the two most frequent causes of endocarditis on the right side of the heart
Pseudomonas Aeruginosa infection #7
malignant external otitis
external ear canal infection. burrows into mastoid bone, primarily in elderly diabetic patient
Pseudomonas Aeruginosa infection #8
corneal infections
MNEMONIC for Pseudomonas A.
BE PSEDUO
Burns Endocarditis Pneumonia Sepsis External malignant otitis media UTI Diabetic osteomylitis
burkholdia cepacia
metabolic traits
transmission
oxidase positive
aerobic
gram +
grows in water, soil, plants, animals, in hospitals
people at greatest risk for contracting burkholdia cepacia
ppl w/ cystic fibrosis
burkholdia cepasia: infections
pneumonia, asymptomatic carriage, bronchiectasis (dilated infected airways), bacteremia
Stentrophomonas maltophilia
normal/abdnormal flora?
normal respiratory flora
Stentrophomonas maltophilia
transmission
health care workers (hands) and medical devices
Stentrophomonas maltophilia
metabolism
oxidase neg. non lactose fermenter
Stentrophomonas maltophilia
clinically presents
penumonia in ventilated patients on broad antibiotics
line releated bactermia
Acinetobacter baumanni
metabolism
obligate aerobe
oxidase negative
non lactose fermenter
