Tropical Medicine Flashcards
what are some febrile illnesses that cause splenomegaly?
malaria, typhoid
EBV –> splenomegaly
CMV –> hepatomegaly
besides a blood smear positive forthe organism, anemia, and hyperbilirubinemia causedbythistropicalillness
malaria
sxs=fever,sleepiness
complication=cerebral malaria –>LOC,death
Malaria with “circular”organisms
“diamond ring” == falciparum
what is the treatment for scabies?
permethrine 5% overnight
Benzyl benzoate 10-25%
PO ivermectin 200 mcg/kg
permetrhine 2-3% is used for?
head lice
what protozoa can be found in a immunocompetent kid traveling near fresh water, with watery diarrhea
Giardia
–> metronidazole
8mo girl came in acute fever and lethargy for 1d. the rash was seen in her body and legs –> petechial rash: microvascular collapse. diagnosis?
esp. the lethargy, quick progression
+ thrombocytopena
Neisseria meningitidis
–> concerns about airway, obtundation, septic shock
traveler’sdiarrhea is usuallycaused by bacteria. but in wha tage group is it more often caused by viruses?
<2yo –>b/c not a a very good cytotoxic immune system.
noro/virus/adeno viruses
adults: bacterial
name 3 laboratory abnormalities typical of typhoid fever
thrombocytopenia anemia leukopenia -->inhibit WBC production high LFTs --> RBCs sequestered in the liver (more easily hemolyzed) high ESR
name a type of malaria can persent months after coming back from an endemic area
plasmodium vivax / ovale
==> mature parasitic RBcs –> ready to burst
more mild = lasts longer
3yo boy in mexico presents with 2d of diarrhea with in loose and mucousy stools. you suspect dysentery. name 3 organisms that can cause this
dysentery == bloody diarrhea
Entomoeba histolotica E. coli Shigella Salmonella Campylobacter
what is the current recommneded antibiotics regimen for traveler’s diarrhea
Azithromycin 10mg/kg for 5d
an 8yo boy returning from iran 1w ago presents with 2d of fever, jheadache, myalgias, cough, and a petechial rash,. you suspect an rickettsial infection. what’s the treatment?
Doxycycline
overnight you admit several children from the same village in Bangladesh who are dehydrated from profuse nonbloody diarrhea and vomting. you suspect cholera. what is the golden standard to diagnose cholera?
stool culture for Vibrio cholerae
special media. -can be done
tx=flagyl
15yo girl with no PMh, livign gin the DR. fever for 2d with mild hA, joint swelling and muscle pains. you suspect chikungunya. she wnats to how long symptoms are expected and whether she’s protected from future episodes
10% of chikungunya == monthsto years of joint pain
- sxs expected for 7d
- she is likely to be protected from future einfecgtion
usually not as severe are dengue (not as much thrombocytopenias, bone pain)
==> 7 different types of dengue –> can be worse