ID Flashcards
TSS Bugs
GAS, S aureus (tampon, nasal packing)
TSS Treatment
Beta lactam + clinda
+/- IVIg, hyperbaric O2
TSS Chemoprophylaxis
Keflex x 10 d OR Clinda
Nec Fasc Empiric
Pip tazo/vanco/clinda
Nec Fasc GAS
PCN + clinda
Nec fasc polymicrobial
Pip taco + vanco or carbapenem
Nec fasc clostridium
PCN + clinda
Nec fasc Vibrio
doxy + clinda
Nec fasc aeromonas
doxy + cipro
OM bugs in all
s aureus
OM bug foreign body/prosthetsis
CNST, cutibacterium
OM bug nosocomial
Pseud, entero, candida
OM bug DM
GNB, strep, anaerobes
OM bug IC
Candida, aspergillus, mycobacterium
NVOM empiric therapy
CTX+VANCO
Prosthetic joint infection empiric
CTX and vanco
Signs of early HIV
Genital ulcers > weight loss> vomiting>LN>fever
ARV Options
2 NRTI + INSTI/PI/NNRTI Bictegravir+tenofovir a+emtricitabine Dolutegravir, lamivudine TAF = less bone/renal TDF = less lipid, cost less
PJP Prophylaxis
CD4<200
- Septra DS OD, SS OD, DS MWF
- Dapsone - not if G6P
- Atovaquone
- Aerosolized pentamidine
Sulfa allergy proph
No septra
Dapsone okay but not if sjs/tens
If SJS/TENS - atovaquone
Toxo prophylaxis
CD4<100
- Septra
- Dapsone + pyrimethamine (leucovorin)
- Atovaquone
MAC prophylaxis
CD4<50
- Azithro or clarithro
- Rifampin
PJP treatment
- Sulfa IV
- Add pred if O2<70 or A-a 35+
Alt
Mild-Mod - Primaquine + PO clinda
- Dapsone + TMP
- Atovaquone
Mod-Sev - Primaquine + IV clinda
- Pentamidine
Toxo treatment
1. Sulfadiazine + pyrimethamine Alt: 1. Atovaquone alone or with pyrimethamine or with sulfadiazine 2. Septra 3. Pyrimethamine + clinda
MAC treatment
Clarithro + ethambutol
Azithro + ethambutol
TB + 4-10 mm
HIV ESRD Organ transplant Close contact w/infectious 2 years Fibronodular CXR TNFalpha Immunosuppressant
Latent TB Tx
- Isoniazid x 9 mos
- Isoniazid x 6 mos
- Isoniazid + rif x 3 mos
Active TB Tx
Rifampin Isoniazid Pyrizidamole Ethambutol (can stop if susceptible) Steroids if TB meningitis or pericarditis
TB and LTBI
Treat all
Isoniazid + pyridoxine x 9 mos
No prednisone in TB pericarditis
NTB Mycobacterium
3 drugs:
- Macrolide
- Ethambutol
- Rifampin or AG
Fever returned traveller
<2 weeks = malaria, dengue, chikungunya, diarrhea, URTI, flu
>2 weeks = malaria, TB, hep, HIV, enteric fever (Salmonella)
Malaria Treatment Uncomplicated
P falciparum Chloroquine if CS 1. Atovaquone - proguanil 2. Quinine-doxy 3. Quinine-clinda Non falciparum Chloroquine if CS 1. Atovaquone-proguanil 2. Quinine-doxy
Malaria Tx complicated
- IV artesunate x 48 hrs then
- Atovaquone-proguanil
- Doxy
- Clinda
Salmonella typhi treatment
- CTX
- Azithro
- Cipro
Lyme disease Rx
- Bite - doxy
- Erythema migrans - doxy
- Early neuro - doxy, CTX, PenG
- CV lyme - CTX
- Arthritis - doxy
- Late neuro - CTX
Steroid screening
- LTBI - pred >15 for >4 wks
- HepB - pred >7.5
- PCP - pred >20 for >4-8 wks
- Strongyloides - if any IS or lived/traveled to endemic area
Candida sensitivities
Albicans - all
Krusei/glabrata - not azoles
Parapsilosis - not echinocandins
Lusitania - not ampho B
Candida tx
- stable and no recent azole= fluc
- unstable, recent azole, neut = echinocandin
- CNS/eyes = ampho B +/- flucytasine
- Pregnancy = Ampho B
Tx for 2 weeks from first neg blood culture
Aspergillus Tx
ABPA - steroid + anti IgE +/- itra
Aspergilloma - solitary = remove, multiple = anti fungal
Chronic cavitary pulmonary = antifungal
Invasive aspergillosis = voriconazole, OI/neu/IC CT chest/galatomannan/cx
Dimorphic Fungi Tx
- Blasto - itra (mild/mod), ampho B (sev)
- Histo - none (mild), itra (mod), ampho B (Sev)
- Coccidio - itra if symptoms
Airborne
TB - tx 2 wk, 3 neg AFB
Disseminated VZV - contact, lesions crusted
Measles - 4 d after rash start
Droplet
SARS Mumps - 5 d after parotitis Meningococcus - 24 hr tx Invasive GAS - with contact, 24 hr tx Ebola - with contact
Bites empiric tx
- Amox-clav
- Cephalosporin + flagyl
- Moxi
- Doxy + clinda
Animal bites bugs
Pasteurella Capnocytophaga Staph Strep Anaerobes
Human bites bugs
Eikenella
Staph aureus
Strep
anaerobes
Meningitis Tx
<50 = CTX, Vanco
>50 = CTX, Vanco, ampicillin
Dex 10 QID x 4 d
Meningitis CHEMOproph Abx
Within 10 d
CTX/cipro/rifampin x 1
Meningitis bugs
S pneumo
N meningitides
H flu
Listeria (old)
IE MSSA Tx
Native: Cloxacillin/cefazolin
Prosthetic: add Rifampin and gentamicin
IE MRSA/CNST Tx
Native: Vanco
Prosthetic: add rifampin and getamicin
IE Viridans group strep/S gallolyticus/S bovis TX
PenG or CTX
IE E faecalis TX
Amp plus gent/CTX
IE E faecium TX
Vanco and gent
IE HACEK Tx
CTX
IE Prophylaxis no allergy
- Amoxicillin
- NPO: ampicillin, CTX, or cefazolin
IE prophylaxis penicillin allergy
- Keflex, clinda, azithro
- NPO: cefazolin, CTX, clinda
CAP Outpatient Healthy
Amoxicillin TID
Doxycycline
CAP Outpatient Comorbid
- Amox-clav or cephalosporin PLUS macrolide or doxy
2. Respiratory fluoroquinolone
Campylobacter diarrhea tx
Azithro
S enterica typhi diarrhea tx
CTX/cipro
Shigella diarrhea tx
Azithro, copra, CTX
Vibrio diarrhea tx
Doxy
Yersinia diarrhea tx
Septra
C diff episode 1
Vanco 10 d
Or
Fidoxamin
Flagyl
C diff episode 1 severe but uncomplicated
Vanco 14 d
Or fidoxamin
C diff episode 1 severe and complicated
Vanco or fidoxamin
IV Flagyl
+/- PR vanco
C diff 1st relapse
Vanco x 14 d or fidoxami (if sev/comp)
C diff 2nd relapse
Vanco with taper
Consider FMT
Intraabdominal infection treatment
- Drain
- <3 cm antibiotic alone may suffice
- outpatient- CTX/Flagyl or cipro/flagyl
- inpatient - piptazo, mero, ceftazidime or cipro plus flagyl
UTI Tx
UTI
- Nitrofurantoin
- Septra
- Fosfomycin
Pyelonephritis
- Fluoroquinolone
- IV beta lacy am
Prostatitis
Need to cover pseudomonas, E. coli and enterococcus
Chronic - FQ
Acute well - FQ
Acute unwell - piptazo, cephalosporin, FQ
Endometritis
Need to cover GBS
CLINDAMYCIN and amino glycoside
Intra abdominal infection treatment
Community
CTX or copra and flatly
Hospital - need to cover PSA
Pip tazo/ceftaz/mero/cipro and flagyl
UTI Tx
Uncomplicated 1. Nitrofurantoin - not in pyelo 2. Septra - not in pregnancy 3. Fosfomycin - not in pyelo Alt: FQ or beta lactam
Pyelo
- FQ
- IV beta lactam
Prostatitis bugs and tx
Pseudomonas, E Coli, Enterococcus Acute 1. Well - FQ 2. Unwell - pip tazo, 3rd gen ceph, FQ Chronic 1. FQ
Endometritis bugs and tx
GBS and others
Clinda and AG
Chlamydia tx
- Azithro x 1
- Doxy x 7 days
Test for cure only if poor compliance, pregnant, pre pubertal, alternative tx used
Gonorrhea tx
- CTX or cefixime x 1
- Also need to give azithro x 1
DGI - CTX x 7 d and azithro
Must test for cure
Syphilis primary/secondary/early latent
Benz PenG 2.4 MU x 1
Syphilis late latent/tertiary
Benz PenG 2.4 MU weekly x3
Neurosyphilis
Aqueous PenG q4hr x 14 d then IM x 1 if possible late latent
Mycobacterium genitalum tx
Moxifloxacin x 14 d
HSV 1/2 tx
Acyclovir
Valacyclovir
LGV Tx
GIANT CELLS
Doxy x 14 d - need to treat partner
Chancroid tx
- Cipro
2. Azithro
Bacterial vaginosis tx
Positive whiff, clue cells
Flagyl x 7 d
Trichomoniasis tx
Yellow, frothy, strawberry cervix
Flagyl x 7 d
Candidiasis vaginal tx
Clotrimazole, fluconazole
Genital warts tx
HPV 6/11
Cryo, imiquimod
Purulent SSTI Tx
Mild - I&D alone Mod - Empiric: Keflex, Septra, doxy - MSSA = keflex - MRSA = Septra Severe - Empiric = Vanco and ancef - MSSA = ancef - MRSA = Vanco
SSTI not purulent tx
Mild - Keflex Moderate - Ancef Severe - Vanco and piptazo - Vanco and mero
Cellulitis prophylaxis
If 3+ episodes per year can consider:
Pencillin
Amoxicillin
Keflex
S aureus abscess
Clinda or Septra plus I&D