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39 Cards in this Set
- Front
- Back
=== CNS & PRIONS ====
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=== CNS & PRIONS ====
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test to dx enteroviral, HSV, and WNV meningitis?
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- Polymerase chain reaction is both sensitive and specific for diagnosing enteroviral meningitis and HSV
- WNV: IgM Ab in CSF Viral cx are unreliable |
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Meningitis Associations:
i. Strep pneumo ii. Neisseria meningitis iii. Listeria iv group b strep |
i. pneumonia, sinusitis, otitis, immunocomp
ii. children, young adults, complemt def. iii. extrems of age, immunocomp'd, TNF inh, contaminated food, iron overload, HIV iv. Neonates |
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Emperic tx, Comm-acq Meningitis i. 2-50 ii. >50 iii. immunocompromisedd |
i. Vanc + 3G ceph ii. Vanc + amp + 3G ceph iii. vanc + amp + (cefepime or meropenem) |
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Emperic tx, HC-acq Meningitis i. skull fx ii. post-neurosurg or head trauma iii. ventricular catheters |
i. Vanc + 3G ceph ii. Vanc + (ceftaz | cefepime | meropenem) iii. |
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Criteria for home IV abx tx of Meningitis?
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(1) completion of IP therapy for > 6d
(2) no fever > 24 - 48 hours; (3) no significant neurologic dysfunction, focal findings, or seizure activity; (4) clinical stability or improving infection; (5) ability to take fluids by mouth; (6) HHA / visiting nurse |
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dx of brain abscess?
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- MRI
- lesion > 2.5 cm should be stereotactically aspirated or surgically excised - culture and histopathologic analysis. |
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Brain abscess, Emperic tx i. Ear/sinus ii. Dental iii. trauma / neurosurgery iv. lung inf v. endocarditis |
i. Metro + 3G ceph ii. Metro + PCN iii. Vanco + 3G ceph iv. metro + PCN + sulfonmide (TMP-SMX) v. Vanc + gent |
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brain abscess, length of tx
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- Abx 6-8 wks (3-4 if excised)
- repeat imaging biweekly up to 3 mo |
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cranial subdural empyema, sx?
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rapidly progressive, with symptoms and signs related to increased intracranial pressure, meningeal irritation, or focal cortical inflammation
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cranial subdural empyema, dx/tx?
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dx: MRI > CT
tx: vanc / metro / 3-4gen ceph - surgical decompression |
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Spinal epidural abscess, indications for med vs surg tx?
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- abx alone can be considered if have localized pain and radicular symptoms without long-tract signs (do frequent neuro checks + serial MRI)
- surg in pt with increasing neurologic deficit, persistent severe pain, or increasing fever or peripheral leukocyte count, paralysis < 36 hrs |
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HSV encephalitis, dx and tx?
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- dx: HSV PCR in CSF [may be neg 1st 3-7d].
- NOT serology/CSF viral cx - tx: IV acyclovir 2-3wk |
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WNV enceph, sx?
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fever, fatigue, EPS, tremors, bradykinesia, **focal weakness**
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CJD, presentation and dx
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- progressive dementia, myoclonus, death in 5 mo - DX: Neural tissue evaluation demonstrating spongiform changes and histopathologic staining for prion protein (PrPsc)- dx only after death and can spread infection |
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Variant CJD?
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- young pt, psych sx
- from bovine spongiform encep - PrPsc type 4, can do pre-mortem tonsil bx |
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Treating bacterial meningitis, no improvement, what to do?
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Repeating the CSF analysis is indicated for patients who have not improved after 36 to 48 hours of appropriate therapy, especially for patients with pneumococcal meningitis who are also being treated with adjunctive dexamethasone.
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=== SKIN AND SOFT TISSUES ====
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=== SKIN AND SOFT TISSUES ====
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typical strep and staph skin infection appearances?
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The presence of lymphangitis and a “peau d’orange” appearance of the skin are more consistent with strep
- an abscess or drainage from an existing wound or site of previous penetrating trauma is more suggestive of staph |
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treatment of community MRSA?
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Oral: clindamycin, trimethoprim-sulfamethoxazole, tetracyclines, and linezolid.
Hospitalized: vancomycin, daptomycin, telavancin, ceftaroline, and linezolid |
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tx of necrotizing fasciitis |
surgical exploration (daily as indicated) anti-MRSA+GP+GN+anaerobe coverage (+ pseudomonal) vanco/dapto/linez + (zosyn | cefepime + metro | carabpenem) |
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tx for strep and staph TSS?
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Clinda, IVIG, Hyperbaric O2?
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Human bite on hand / punch to face treatment? |
clenched-fist injury to hand requires immediate prophylaxis (GP/GN/ anaerobe): - Amox-clav - Clina / Moxi (PCN allergic) |
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indication for abx after dog or cat bite?
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- immunocompromised patient
- wounds on the hands or near a joint or bone, - moderate or severe wounds at any site, significant crush injuries, or wounds with associated edema |
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dog/cat bite abx?
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augmentin
if allergic: fluoroquin, doxy, TMP-SMX + clinda |
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=== CAP ====
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=== CAP ====
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when to test for causative organism in CAP?
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Outpatient tx: optional
IP: yes if etOH, cavitary liver dz, failed OP tx ICU: yes, blood cx, sptum, urine leigonella |
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OP CAP tx and duration?
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5-7 days
Low risk: Xmycin or doxy High rsk for drug resistant: resp fluor or beta lactam + (macrolide | doxy) |
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When to do immediate thora in CAP? |
large associated pleural effusion (typically defined as an effusion occupying half or more of the hemithorax on an upright chest radiograph or a fluid level of more than 1 cm on lateral decubitus films) |
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=== TICK DISEASE =====
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==== TICK DISEASE ======
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The initial clinical manifestation of Lyme disease?
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Erythema migrans, which is an erythematous skin lesion at the site of tick attachment 1-2 weeks after infection
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Lyme Stages & dx?
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Early localized (incu 3-30d) : Visualize EM
Early Disseminated (Incu 3-6wk): ELISA + W Blot Late: (Months - years) : ELISA +WB or PCR of joint fluid Post Lyme : none |
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Lyme Stages & sx?
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Early localized (incu 3-30d) : E Migrans
Disseminated (Incu 3-6wk): Multiple EM, CN palsy, meningtis, myocarditis,fever Late(Months - years) : Arthritis post-lyme: neuralgia, HA, fatigue |
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Lyme tx?
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All Oral 2-3 weeks
except Early Dess Stage + Meningitis / 2 deg AVB / CHB -> give IV Late: 28 days oral [IV if relapse or enceph] Post-Lyme (supportive, no abx) |
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Infections carried by Ixodes tick? |
Babesia [only one that give hemolysis] Lyme Anaplasma |
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babesiosis
i. dx ii. tx |
tx all symptomatic pt and asymtomatic > 3 mo i. hemolysis, macrocytic anemia, while blood PCR ii. mild - atovaquone + azithro OR quinine + clinda severe: quinine+clinda exchange trf if > 10% parasitemia |
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human monocytic ehrlichiosis and human granulocytic anaplasmosis i. sx ii. dx iii. tx |
i. nonfocal febrile illness with frequent headache, myalgia, and fatigue, leukopenia ii. Clusters of bacteria on buffy coat stain; serum antibodies appear 2-4 wks after iii. doxy |
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RMSF i. lab findings / dx ii. tx |
i. thrombocytopenia and elevated serum liver enzyme values. NORMAL leukocyte count (unlike ehrlic / anaplas). Serological testing lags. Can check skin bx ii. doxy |
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Leptospirosis i. source ii. sx iii. dx |
i. tropics, animal urine, water/soil ii. Conjunctival effusion, abrupt fever, rigor, kidney / resp failure, myocarditis iii. self-limited, doxy / PCN shorten sx |