ANSWERS LATEST UPDATE
Varicella Famciclovir adult dose
500mg TID for 7-10 days
Varicella Valacyclovir adult dose
1g TID for 7-10 days
Rocky Mountain Spotted Fever description
Is a tick borne illness caused by the bacterium Rickettsia rickettsia and belongs to a
group of rickettsial bacterial called the spotted fever group rickettsiae; causes the most
severe disease and greatest potential for fatal outcome
RMSF tick attached for
2-20 hours
RMSF S/S occur within
3-12 days
RMSF classic triad
-Fever
-Rash
-Reported tick bite
RMSF initial S/S
-Fever
-Headache
-Maliase
-Myalgia
-GI
RMSF S/S 2-4 after fever onset
-Rash usually develops that begins as small, erythematous, blanching macules on the
extremities and spreads over the trunk, arms, legs, and the palms and soles over the
course of several days developing into a macupapular rash
RMSF lab findings
, -Thrombocytopenia
-Elevated LFT
-Hyponatremia
RMSF diagnostics
-Serology using IFA assay: increase in IgG antibody titers between acute and
convalescent titers; titers should be drawn 2-4 weeks apart; an IgG titer of 64 is
diagnostic
-PCR assay and or immunohistochemistry staining of skin rash biopsy to detect bug
-PCR assay on blood is less sensitive but considered
-Skin biopsy for PCR and immunohistochemistry staining
RMSP empiric treatment
Started without delay of lab results
RMSP DOC
Doxy only recommended drug despite age
RMSF Doxy adult dose
100mg BID 5-7 days
RMSF Doxy child dose
-<100lbs 2.2mg/kg/ BID 5-7 days
-Otherwise adult dosing
RMSF doxy allergy or prego
Need to speak with infectious disease specialist for treatment options
Community Acquired MRSA oral treatment options
-Doxy
-Bactrim
-Clindamycin
-Linezolid
CA-MRSA risk factors
-Reports spider bite
-Prior MRSA infection
-Close contact with someone who is infected
-Competitive athletes