ID Flashcards

0
Q

SIRS criteria

A

WBC count 12
T 38C (100.4F)
RR >22 or PaCO2 90

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1
Q

Liebermeister’s Rule

A

Each degree increase in temp Celsius –> an 8 beat increase per minute in heart rate

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2
Q

Septic shock

A

Severe sepsis req’ing pressures to maintain adequate perfusion

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3
Q

Severe sepsis

A

Sepsis +

1 indication of end organ damage:

  • HYPOTENSION - Systolic bp 40 points below patients baseline
  • Lactate >4
  • AMS
  • Renal failure
  • Hyperglycemia in a pt who is not diabetic
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4
Q

Tx of sepsis

A

Initiate early antibiotics and aggressive fluid resuscitation

  • Vanco
  • Zosyn
  • In HCAP add Levo (750 mg IV) to provide double pseudomonas coverage
  • In urosepsis - ceftriaxone (1 g IV/day) better option
  • For meningitis - Vanco + Ceftriaxone (2g IV/day)
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5
Q

Who’s at risk for HCAP

A
  • Two day hospital admission over the last 3 months
  • Lives in along term care facility
  • Out pt antibiotics or chemotx in last 30 days
  • Dialysis pts
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6
Q

In original sepsis protocol pts got

A

X more fluids

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7
Q

Tx of otitis externa

A

Cortisporin otic: neomycin, polymixin b, hydrocortisone

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8
Q

Tx of whooping cough

A

IV macrolide

To prevent transmission to others

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9
Q

Rocky Mountain spotted fever

A

Doxycycline - ok in peds at recommended dose and duration

Encephalitis, myocarditis, renal failure, pulm infiltrates and respiratory failure can occur

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10
Q

Scabies

A

Permethrin

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11
Q

Impetigo: tx

A

Topical antibiotic,

Ie mupirocin

Us staph or strep

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12
Q

Coccidiomycosis

A

Southwestern US
Soil exposure
Arizona

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13
Q

Histoplasmosis

A

Ohio River Valley ans Mississppi

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14
Q

Ehrlichiosis

A

X

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15
Q

Otitis externa

A

Tx corticosporin otic (neomycin, polymixin B and hydrocortisone) SUSPENSION rather than solution as it is less ototoxic

Is severe and ear canal is swollen shut, use wick or gauze to deliver topical antibiotic deep

Typical organism pseudomonas or staph aureus, MRSA unusual

16
Q

Malignant otitis externa

A

MCC pseudomonas

Tx: oral fluoroquinolones

Seen in immunocompromised pts, most commonly diabetics, HIV and elderly

Persistent symptoms of otitis externa despite tx should raise suspicion for this dz

Can invade skull base and affect CNs, Facial N affected first

17
Q

Ocular HSV

A

Dendrite lesion on fluroscein stain
Requires topical ophthalmic therapy - trifluridine 1%

Hutchinsons sign

If skin lesions present also tx with acyclovir

18
Q

Chalazion

A

Inner surface of eyelid

May need antibiotics and I&D

19
Q

ANTHRAX : TX

A

post-exposure prophylaxis
doxycycline or ciprofloxacin x60 days

amoxicillin in kids, pregnant/lactating women exposed to susceptible strains

monoclonal antibody available

20
Q

encephalitis

A

infection of brain parenchyma
can present with focal neurologic findings: aphasia, seizure, hallucinations, motor weakness

mcc HSV

dx: based on CSF analysis from LP

CT head warranted but negative

21
Q

meningitis

A

infection of the meninges of brain and spinal cord

most common bacterial etiology:
strep pneumo - adults
Neisseria meningitidis - kids
consider Listeria monocytogenes in elderly and immunocompromised pts

most commonly implicated virus is enterovirus

pts at highest risk of developing are at extremes of age, those with ENT infections, chronically ill and immunosupressed, and those who use EtOH and cigarettes

outbreaks have been found among persons in crowded living conditions such as dorms or barracks and in poverty stricken areas

dx: based on CSF analysis from LP - low glucose, high protein

CT head warranted but negative

22
Q

Pericarditis

A

ST:T wave if ratio >25%, then it’s 85% sn for pericarditis

As opposed to early repol