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orthopedics > musculoskeletal infections > Flashcards

musculoskeletal infections Flashcards

0
Q

late features of necrotizing fascitis?

A

crepitus, bullae, ‘dishwater pus’, sepsis

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1
Q

initial features of necrotizing fascitis?

A

swelling, edema, disproportionate pain

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2
Q

type 1 necrotizing fascitis

A

polymicrobial: non-A strep, enterobacteria, anaerobes

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3
Q

type 2 necrotizing fascitis

A

“flesh eating”: group A b-hemolytic strep

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4
Q

type 3 necrotizing fascitis

A

marine vibrios: vibrio vulnificus

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5
Q

type 4 necrotizing fascitis

A

MRSA

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6
Q

necrotizing fascitis tx?

A

broad-spectrum antibiotics, surgical debridement; amputation

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7
Q

osteomyelitis

A

infection of bone, bone marrow

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8
Q

sequestra

A

DEAD BONE with surrounding granulation tissue

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9
Q

involucrum

A

periosteal NEW BONE

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10
Q

most sensitive MONITOR of the COURSE OF INFECTION in children?

A

CRP

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11
Q

shows changes in bone, bone marrow BEFORE xray?

A

MRI

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12
Q

osteomyelitis tx?

A

empirical tx, organism-specific antibiotics, surgery

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13
Q

most common infecting organism?

A

S. aureus

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14
Q

characteristic organism in sickle cell anemia?

A

salmonella

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15
Q

populations at high risk for chronic osteomyelitis?

A

immunosuppressed, diabetic, IV drug users

16
Q

chronic osteomyelitis tx?

A

(NO empirical tx) culture-based IV antibiotics, debridement (and/or amputation)

17
Q

Brodie’s abscess (usually in metaphyses)

A

SUBACUTE osteomyelitis

18
Q

most commonly affected by Brodie’s abscess?

A

femur, tibia

19
Q

characteristic feature in TB?

A

destruction in BOTH SIDES of joint

20
Q

common etiology of septic arthritis?

A

hematogenous

21
Q

moat common infecting agent in IV drug users?

A

Pseudomonas

22
Q

septic arthritis tx?

A

empirical antibiotics (S. aureus most common) THEN organism-specific

23
Q

most common pathogen associated with implants?

A

Staph epidermidis

24
Q

most SENSITIVE (but NOT specific) indicator of infection?

A

ESR

25
Q

1st step in TJA infection tx?

A

implant (and cement) removal

orthopedics (10 decks)

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