MICRO SYSTEM Flashcards
How is the reservoir for Shigella different from that of EHEC?
EHEC = animal i.e. undercooked meat (hamburger); Shigella = resevoir is humans
Normal flora of vagina
Lactobacillus (also colonized by E. coli and group B strep)
3 bugs that can mimic appendictis
Yersenia enterocolitica, nontyphoidal salmonella, and campylobacter
What is the most common cause of pneumonia in a neonate (i.e. 0-4 weeks), what about after 4 weeks?
Group B strep (moms vagina), RSV
Baby born with vesicular lesions and encephalitis
congenital HSV (from vagina, not transplacental)
Bulging can
C. botulinum
Which congenital infection is most likely to be received during delivery rather than transplacentally?
HSV-2
Poisoning from reheated meat dishes
C. perfringens
What do you give bacterial meningitis empirically? What if you suspect listeria?
Ceftriaxone and vancomycin, add ampicillin
What does a positive leukocyte esterase test tell you? Positive nitrite test?
bacterial UTI; gram negative bacterial UTI
Which watery diarrhea causing bug has ST and LT toxins?
ETEC (can Tx with bismuth and sucralfate)
Hearing loss, seizures, and petechial rash in infant
Most likely congenital CMV
Chorioretinitis, hydrocephalus, and intracranial calcifications in a neonate
Congenital toxoplasmosis
Bacteria isolated from UTI that produces a red pigment
Serattia marscescans
Which childhood exanthem involves post auricular lymphadenopathy?
Rubella
What is the most common demographic for osteomyelitis
children
Ceftriaxone and vancomycin are given empirically for this condition _____________. And ampicillin is added if _______________ is suspected.
Bacterial meningitis, Listeria monocytogenes
How is deafness from congenital syphilis different from deafness in other torch infections?
It specifically causes CN VIII deafness, not ossicle malformation
Osteomyelitis in cat scratch pt
Pasteurella multocida
2 infections that can cause stillbirth due to hydrops fetalis
ParvoB19, Syphilis
PDA, cataracts, and deafness with a rash in a neonate
Congenital rubella (mom had arthritis with lymphadenopathy)
Which protozoa (2) cause bloody diarrhea? Watery (3)?
Bloody = Entamoeba histolytica, Balantidium coli (ciliated, pigs); Watery = Giardia (esp. IgA def) and if IC = Cryptosporidium and Cystiosopora
Which comma shaped organisms cause watery diarrhea? Bloody diarrhea?
Watery = V. cholerae; Bloody = C. jejuni
What 2 orthopedic conditions can N. gonorrhea cause?
Septic arthritis most likely, can be osteomyelitis
