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50 Cards in this Set
- Front
- Back
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the most common cause of meningitis in newborns
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Group B streptococcus
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white piedra is endo or ecto thrix?
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ectothrix
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exfoliative toxin of staph aureus is aka
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epidermolytic
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erythema migrans of borrelia burgdorferi (lyme disease) is caused by...
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host immune response to disseminated borrelia
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tinea versicolor basic symptom and species
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hypopigmentation
malassezia |
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In tampon-associated toxic shock syndrome, S. aureus is found where?
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in the tampon, but not in the blood stream
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zidovudine MOA
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nucleoside analog reverse transcriptase inhibitor
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black piedra
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piedraia hortae
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white piedra species
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trichophyton
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ringworm
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trichophyton mentagrophytes
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perinatal sepsis & meningitis: 2 notable causes and what distinguishes them
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group B strep
listeria monocytogenes listeria is +motility +catalase |
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listeria monocytogenes gram stain
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G+ bacillus
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steatorrhea
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excess fat in the feces
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the most common viral cause of diarrhea in adults
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norwalk
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norwalk virus: diarrhea with or without fever?
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+ fever
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salmonella and shigella both cause diarrhea + for
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+ bloody
+ fever |
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cryptosporidium: notable sxs
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voluminous watery diarrhea
+/- abdominal pain |
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cryptosporidium parvum: lab dx
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acid-fast staining
yeast-like red oocysts |
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entamoeba histolytica lab dx
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motile trophozoites
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entamoeba histolytica sxs
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fever
abdominal pain bloody diarrhea |
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dysentery
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fever
abdominal pain diarrhea with blood or mucus |
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giardia sxs
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nonbloody foul-smelling diarrhea
abdominal cramps bloating flatulence |
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giardia lab dx
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trophozoites & cysts in stool
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Vibrio cholera produces _ colored (meaning what?) colonies on _ agar
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yellow (i.e. sucrose fermenting)
TCBS |
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skin scrapings of leprosy lesions one way to distinguish lepromatous vs. tuberculoid
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sheer numbers are greater in lepromatous
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cysticercosis species
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Taenia solium
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the most common parasitic infection of the CNS worldwide
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cysticercosis
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ceftriaxone MOA
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inhibits cell wall synthesis
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what causes impetigo?
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staph aureus
(sometimes strep pyogenes) |
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what distinguishes between strep and staph?
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staph is catalase +
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slapped cheek
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parvovirus b19
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macconkey agar
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grows g- bacteria and stains them pink if they're lactose fermenters
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periodontal disease organism that can cause _
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streptococcus mutans
endocarditis |
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_ is ominous for its association with (2) in patients with colon cancer
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streptoccocus bovis
bacteremia & sepsis |
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growth at 6.5% NaCl differentiates
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+ Enterococcus faecalis
- Streptococcus bovis |
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erythromycin MOA
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inhibits protein synthesis at
50S ribosomal subunit |
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the most common cause of "severe dehydrating diarrhea" in infants worldwide
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rotavirus
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double icosahedral capsid
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rotavirus
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rotavirus what kind of diarrhea?
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+fever
+vomiting +watery |
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tickborne relapsing fever: bug?
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Borrelia
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_ appears during the acute and stage of Hepatitis B but disappears in the convalescence phase
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HBsAg (surface antigen)
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C. jejuni is associated with some sequelae...
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Guillain Barre
Reiter's |
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a mediator of shock, made by Clostridium perfringens
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alpha toxin
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clostridium perfringens lab
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G+ rods with truncated ends
double zones of beta hemolysis |
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Bacillus cereus typically causes ...
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food poisoning several hours after consumption of leftover rice
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pseudomembranous colitis
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clostridium difficile
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clostridium difficile causes ...
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watery diarrhea
abdominal pain |
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a risk factor for clostridium difficile
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broad spectrum abx
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a potent activator of macrophages
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IFN-gamma
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an antidiarrheal agent...
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loperamide
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