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29 Cards in this Set
- Front
- Back
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Causative agent of nausea, vomiting (onset < 6 hr) after eating cold cuts, or potato salad, or mayonnaise, or custards?
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Staphylococcus aureus
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Rapid-onset food poisoning is mediated by what component of staphylococcus?
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enterotoxin
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Cause of nausea/vomiting, abdominal cramps, diarrhea +/- bloody 12-48h after eating eggs or poultry or peanut butter?
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Non-typhoidal Salmonella
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Abx treatment in acute gastroenteritis due to Salmonella spp. is not warranted to avoid
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carrier (in bile ducts) state
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Abx used only to treat septic phase of salmonella gastroenteritis is
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ciprofloxacin
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Cause of fevers (>103°), headaches; macular rash on torso (“rose spots”) abdominal pain and little diarrhea later; PE: bradycardia; hepatosplenomegaly (+/-) in a pt with hx of travel (to tropics)?
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Salmonella typhi
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Cause of osteomyelitis in pt w/ underlying sickle cell Dz; blood culture +)?
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Salmonella typhimurium
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The comma-shaped cholera organisms are microscopically similar to
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Campylobacter
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Cause of diarrhea w/ occult blood, abdominal cramping and fever, 2d after ingestion of poultry-contaminated salad
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Campylobacter jejuni
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Abx to treat campylobacter enteritis with high fevers in pregnancy, and HIV is
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Erythromycin
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A pt w/ hx of extraction of impacted tooth 3 weeks ago now has subacute (native, mitral-valve) endocardits. BCx should yield
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Viridans streptococci.
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DOC of subacute, native mitral-valve endocarditits due to viridans streptococci.
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PenG +/- gentamicin
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α-hemolytic colonies of Streptococcus pneumoniae is differentiated from viridans streptococci definitively confirmed by
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Optochin sensitivity
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Dysentery due to invasive Shigella spp. in elderly is treated with
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Ciprofloxacin
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Cause of dysentery-like illness with fever + abdominal cramps, tenesmus + blood & mucus in children?
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Shigella sonnei
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Pt has urinary urgency, frequency, dysuria; lab: pyuria (+) or nitrite (+). TOW?
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Cystitis due to E. coli
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Septic shock due to Gram-negative bacteria (e.g., E. coli, Klebsiella spp., or Pseudomonas aeruginosa) is
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Endotoxic shock
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Secretory diarrhea, fever and vomiting during travel are caused by
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Enterotoxic E. coli
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Frank bloody diarrhea, after eating undercooked meats or drinking fruits drinks, is caused by prepared foods or water, contaminated w/
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E. coli O157:H7
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Pathogenesis of hemorrhagic enterocolitis caused by E. coli involves
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Shiga toxin (a cytotoxin)
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Complication of hemorrhagic enterocolitis in children
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hemolytic uremic syndrome
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Species of Clostridium that causes afebrile, systemic toxic diseases in infants (honey), and in adults foodborne (meat, canned vegetables), wound (injected), iatrogenic (cosmetic) is
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C. botulinum
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Causative agent of nausea, vomiting (onset < 6 hr) after eating cold cuts, or potato salad, or mayonnaise, or custards?
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Staphylococcus aureus
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Rapid-onset food poisoning is mediated by what component of staphylococcus?
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Enterotoxin
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Tx of staphylococcal food poisoning?
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Rehydration
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Cause of acute onset of diarrhea with rice-water stools, vomiting, dehydration during travel to South America
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Vibrio cholerae
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Pathophysiology of cholera is due to what mechanism?
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A-B toxin causes ↑ cAMP
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Cholera pathogen is isolated from stool by culture on selective medium called
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thiosulfate-citrate-buffered sucrose (TCBS) agar
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Tx of cholera involves
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Rehydration (tet in severity)
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