Gram (-) Bugs Flashcards
3 bugs to think of if ferment on MacConkey’s
Kleb
E.Coli
Serratia
Treat vs prophylaxis of close contacts for N.meningitis
Treat = ceftriaxone
Close contacts = rifampin
Does N.meningitis or gonorrhea have a polysaccharide capsule, ferment maltose, and a vaccine
Meningitis
N.meningitis pathophys
Increase cap perm -> hypovolemia Net vasoconstriction Adrenals get under profused TCP -> petechiae -> purpura as a sign of impending DIC COMBO all = septic shock
Presentations of N.gonorrhea
Gonorrhea - white, pus discharge PID Fitz Hugh Curtis = liver adhesions *Septic arthritis *Neonatal conjunctivitis (within 1st few days of life) vs chlamydia - 1 wk after birth
4 diseases of H.influ
Epiglottitis
Meningitis
Otitis media
Pna
Culture H.influ
Chocolate agar + factor 5 and 10
Treat H.influ: mucosal vs meningitis vs prophylaxis
Treat w/ amoxicillin
Meningitis w/ ceftriaxone
- Rifampin for prophyaxis
Culture + stain legionella
Silver stain
Charcoal plate w/ iron + cysteine
2 major diseases from legionella + treat
Legionnaires = bad pna, unilateral in 1 lobe - Diarrhea - Hyponatremia Pontiac fever = flu like Macrolides or fluoro
PSEUDDO mnemonic for pseudomonas symptoms/causes
Pna Sepsis (Otitis) Externa = swimmer's ear UTIs Drug use Diabetes Osteomyelitis
Pseudomonas skin rashes
- Hot tub folliculitis
- Ecthyma gangrenosum - IC pts, rapid cutaneous necrosis
- Burn victims
EColi virulence factor that is going to give you pna and neonatal meningitis
K capsule
EColi virulence factor that is going to give you cystitis and pyelonephritis
Fimbriae
What is the common virulence factor to all gram neg bacteria that can produce septic shock
LPS as an endotoxin