ID Flashcards
CA- meningitis bug
N.meningitis, H. influenzae: 7d
Strep pneumonia: 10-14d
Listeria monocytogenes: 21d
CA- meningitis empiric coverage
<50yo: IV ceftriaxone 2g q12h + IV vancomycin
immunocompromised and >50yo: IV ampicillin 2g q4h + IV ceftriaxone 2g q12h + IV vanco
CAP bugs
S. pneumonia, mycoplasma, H.influenza
CAP empiric therapy
CAP non severe: IV augmentin 1.2g q8h + PO clarithromycin 500mg q12h
if risk pseudomonas: IV piptazo 4.5g q6h +/- IV vancomycin (if previous MRSA infection or colonisation within 3m)
risk factors for pseudomonas
-prior hosp >5d in 3m
-received parenteral antibiotics on 3m
-prior resp pseudomonas colonisation in prev 6m
- structural lung disease that leads to frequent COPD exacerbations
severe CAP empiric (cover s.areus, burkholderia)
IV penicllin 4MU q4h + IV ceftazidime 2g q8h + IV azithromycin 500mg q24h
HAP empiric
IV piptazo 4.5g q6h +/- vanco
bacterial gastroenteritis bugs
shigella, salmonella, C.difficle, E.coli
severe bacterial gastroenteritis empiric
IV ceftriaxone 2g q24h / Po azithromycin 500mg q24h
Spontaneous bacterial peritonitis bugs
gram -ve (e.coli)
gram +ve (strep pneumoniae, straphylococcus)
SBP empiric
IV ceftriaxone 2g q24h
diverticulitis abscess bugs
E.coli, klebsiella, B. fragilis
diverticulitis abscess empiric
IV augmentin 1.2g q8h
Community acquired acute cholecystitis/cholangitis/gallbladder empyema bugs
enterobacteriaceae, enterococci, bacteroides sp, c. difficle
Community acquired acute cholecystitis/cholangitis/gallbladder empyema empiric
IV augmentin 1.2g q8h
(if critically ill) add amikacin IV 1-2doses