ID Flashcards
The difference in presentation btwn reactive arthritis and disseminated gonococcal infection?
Infection with Neisseria gonorrhoeae is the second most commonly reported infectious disease in the US and can manifest in a localized (e.g., urethritis, pelvic inflammatory disease) or disseminated (arthritis-dermatitis syndrome, purulent gonococcal arthritis) form. The disease is most commonly transmitted during unprotected sex or, in neonates, during birth. Arthritis-dermatitis syndrome typically presents with migratory, asymmetric arthritis, tenosynovitis, and vesicular, pustular, or maculopapular lesions on the trunk and extremities (sometimes involving the palms and soles), as seen in this patient.
VERSUS
Reactive arthritis typically presents with a triad of urethritis, conjunctivitis, and migratory polyarthritis most commonly in young men. While a patient may p/with migratory polyarthritis, other associated symptoms of reactive arthritis, if other sx are absent, think disseminated infxn. He also has no history of recent gastrointestinal or genitourinary infections, making this diagnosis unlikely.
Immunocompromised meningitis (pr pt over 55) abx?
Vanc (to cover beta lactam resistant strep pneumo), Ceftriaxone (everything else), Amp (to cover listeria)
Meningitis in neonates. Causes? Tx?
GBS, Listeria, E. Coli, Tx: amp-gent
Meningitis in infants. causes? tx?
Strep pneumo, meningococcus, H. flu. Tx: cefotaxime and vanc
tx for cutaneous antrax
Pen G or cipro
branching rods in an oral infxn?
actinomyces isralii
Weakly gramp + partially acid-fast in lung infxn
Nocardia
Work w sheep and have a liver cyst
echinococcus
meningitis in elderly
strep pneumo
alcoholic with pna. bug?
klebsiella (currant jelly!)
osteo in a foot wound puncture
pseudomonas
osteo in sickle cell pt
salmonella
PPX for MAC? CD4?
azithro. 50
PPX for T. Gondi at what CD4 count?
200
