Shared Flashcard Set

Details

Infectious Disease
Zoonotic
33
Medical
Graduate
11/20/2009

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Cards

Term
Etiology of Lyme disease?
Definition
spirochete, Borrelia burgdorferi
Term
Peak age of incidence of lyme disease?
Definition
5-9yo and 50-54yo
Term
What type of tick is responsible for lyme dz? How long must it attach to infect?
Definition
Ixodes tick. 48-72hrs
Term
What is the hallmark finding in primary lyme disease?
Definition
Erythema migrans (bulls-eye appearance), dev. 1 mth /p tick bite, painless
Term
What clinical presentation occurs in secondary lyme dz?
Definition
Dissemination - small annular lesions and flu-like illness
Term
Describe clinical presentation if CNS involvement in secondary lyme dz.
Definition
HA, meningitis, Bell's palsy, peripheral neuritis
Term
What are the most common c/o in tertiary lyme dz? When does it occur?
Definition
fibromyalgia or chronic fatigue-like syndrome (dev. mths to yrs /p primary dz)
Term
Dx tests for lyme dz?
Definition
ELISA (IgG and IgM Ab) + western blot analysis
Term
Tx for lyme dz? Who might you consult?
Definition
Doxycycline. Rheumatology and Neurology
Term
What are the vectors that transmit Rocky Mountain Spotted Fever (RMSF)? Etiology?
Definition
Dog and wood tick. Rickettsia rickettsii.
Term
What is the hallmark presentation of RMSF?
Definition
petechial rash (flat, pink non-itchy)starting on palms and feet and even. spreads to the rest of the body. Appears 6d /p onset of sx.
Term
How long must the tick attach to transmit RMSF?
Definition
6-10hrs
Term
Describe pathophysiology of RMSF.
Definition
Vasculitis, hemorrhage in skin, GI tract, lungs (pna), heart (myocarditis), pancreas, liver, kidney, skeletal mus.
Term
What are 3 RF associated w/ severe or fatal RMSF?
Definition
1) Advanced age 2) Etohism 3) G6PD def.
Term
Lab findings in RMSF?
Definition
thrombocytopenia, WBC normal
Term
Tx of RMSF?
Definition
PO Doxycycline, O2 or intubation, fluids, monitor UOP
Term
Is RMSF a reportable dz to health depart.? Is Lyme dz?
Definition
Yes. Yes.
Term
Etiology of the plague? Vector?
Definition
Yersinia pestis. Rat flea (Xenopsylla cheopis)
Term
What is the type of plague transmitted by fleas?
Definition
Bubonic plague
Term
what is a char. finding in the Bubonic plague?
Definition
BUboes (enlarged lymph nodes filled w/ pus)
Term
Prognosis of the bubonic plague?
Definition
w/i 2-4d septic chock leads to peripheral gangrene and death
Term
What is the plague expected in a biochemical attack? How is it transmitted?
Definition
Pneumonic plague. Aerosol droplets.
Term
Does the pneumonic plague also have bubo formation?
Definition
No - pna like presentation
Term
Prognosis of pneumonic plague?
Definition
Death w/i 18hrs w/o Abx tx.
Term
Testing for the plague? (3)
Definition
1) Sputum gram stain: gram (-) coccobacillus 2) Blood culture (+) Y. pestis 3) Lymph node aspiration bx (+) Y. pestis
Term
Is there a vaccine available for the plague?
Definition
No - doxycycline prophylaxis if exposed
Term
Drug of chocie to tx plague?
Definition
IV/IM streptomycin
Term
Etiology of malaria? Vector?
Definition
Plasmodium species (parasite). Femal Anopheles mosquito.
Term
What is the most deadly plasmodium species in malaria?
Definition
Plasmodium falciparum
Term
in areas that do not have resistance to tx, what drug is used to tx P. falciparum and P. malariae? What is the prophylactic regimen?
Definition
Choloroquine. Weekly 2 wks b/f trip, weekly during, and weekly X 4 wks after
Term
What is used to tx P. falciparum and P. malariae in drug resistant areas? Prophylaxis regimen?
Definition
Mefloquine (Lariam). qd X 3 days b/f trip, weekly during, weekly X 4 wks /p returning
Term
What is the tx for P. vivax and P. ovale? Prophylaxis and tx regimen?
Definition
Primaquine. qd X 14d /p returning from trip.
Term
Dx testing for malaria?
Definition
Parasites on thick and thin blood smears. IFA on serologic test.
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