MKSAP ID TEST 2025
MCC of post-influenza CAP w/ cavitary lesions - ANSWER staph aureus
Fever, leukopenia, and thrombocytopenia in a patient undergoing treatment for
Lyme - ANSWER Coinfection with anasplasma
Lyme type sxs are present for >1m but Lyme IgG is neg - ANSWER No further
testing for lyme is needed as lyme is unlikely (false pos)
PID tx - ANSWER ceftriaxone or cefotetan PLUS doxycycline
Anthrax tx - ANSWER Doxy or fluoroquinolone
Fever, HA, retro-orbital pain, myalgia, and rash that starts once fever abates -
ANSWER Dengue
Fever, abdo pain, tender hepatosplenomegaly - ANSWER typhoid fever
C diff recurrence tx - ANSWER If more than one recurrence, start PO vanco x
6 weeks
PTLD - ANSWER EBV infection when EBV neg pt gets transplant from EBV
pos pt
Type of isolation for disseminated zoster - ANSWER airborne and contact
, HIV post exposure treatment - ANSWER Triple therapy with tenofovir-
emtricitabine and raltegravir
HIV-1/2 Ag/Ab combination immunoassay (+)
HIV-1/HIV-2 Ab differentiation immunoassay (-)
HIV-1 NAAT (+) - ANSWER Pt is in window period
PrEP - ANSWER Daily combination tenofovir-emtricitabine
Rapid growth of skin nodules after nail salon WHIRLPOOL - ANSWER
mycobacterium fortuitum
meningitis tx - ANSWER vancomycin + ceftriaxone + (if >50yo) ampicillin
Labs required to monitor while on outpt IV antibx - ANSWER Nafcillin,
oxacillin, carbapenem - CBC, LFT, Cr
Antipseudomonals - CBC, LFT, Cr, K
Beta-lactams - CBC, Cr
When to initiate antiretroviral therapy for HIV pt - ANSWER When
medication adherence is assured, at any CD4 count
Post exposure ppx for influenza - ANSWER Oseltamivir + inactivated flu
vaccine
Salmonella gasteroenteritis - tx - ANSWER No tx needed
MCC of post-influenza CAP w/ cavitary lesions - ANSWER staph aureus
Fever, leukopenia, and thrombocytopenia in a patient undergoing treatment for
Lyme - ANSWER Coinfection with anasplasma
Lyme type sxs are present for >1m but Lyme IgG is neg - ANSWER No further
testing for lyme is needed as lyme is unlikely (false pos)
PID tx - ANSWER ceftriaxone or cefotetan PLUS doxycycline
Anthrax tx - ANSWER Doxy or fluoroquinolone
Fever, HA, retro-orbital pain, myalgia, and rash that starts once fever abates -
ANSWER Dengue
Fever, abdo pain, tender hepatosplenomegaly - ANSWER typhoid fever
C diff recurrence tx - ANSWER If more than one recurrence, start PO vanco x
6 weeks
PTLD - ANSWER EBV infection when EBV neg pt gets transplant from EBV
pos pt
Type of isolation for disseminated zoster - ANSWER airborne and contact
, HIV post exposure treatment - ANSWER Triple therapy with tenofovir-
emtricitabine and raltegravir
HIV-1/2 Ag/Ab combination immunoassay (+)
HIV-1/HIV-2 Ab differentiation immunoassay (-)
HIV-1 NAAT (+) - ANSWER Pt is in window period
PrEP - ANSWER Daily combination tenofovir-emtricitabine
Rapid growth of skin nodules after nail salon WHIRLPOOL - ANSWER
mycobacterium fortuitum
meningitis tx - ANSWER vancomycin + ceftriaxone + (if >50yo) ampicillin
Labs required to monitor while on outpt IV antibx - ANSWER Nafcillin,
oxacillin, carbapenem - CBC, LFT, Cr
Antipseudomonals - CBC, LFT, Cr, K
Beta-lactams - CBC, Cr
When to initiate antiretroviral therapy for HIV pt - ANSWER When
medication adherence is assured, at any CD4 count
Post exposure ppx for influenza - ANSWER Oseltamivir + inactivated flu
vaccine
Salmonella gasteroenteritis - tx - ANSWER No tx needed
