Bacterial Infections Flashcards

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1
Q

What is Impetigo? What’s it characterized by?
Who is m/c affected?
Where is it m/c located?

A
  • Superficial bacterial infection characterized by “Honey-Colored crusts”
  • M/C in young
  • M/C on face, nose, mouth
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2
Q

What’s the m/c/c of Impetigo?
What’re common sx?

A
  • Staph aureus
  • Burning, itching, spreads quickly
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3
Q

T/F: Impetigo is contagious.

A

True

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4
Q

How is Impetigo diagnosed?

A

Bacterial cx

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5
Q

How do you treat Impetigo?

A
  • Topical or systemic/oral abx (preferred oral = Dicloxacillin)
  • Abx soaps

For localized, uncomplicated or non-bullous, topical therapy alone = TOC

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6
Q

What is Erysipelas?
What’s it caused by?
Where is it commonly found?

A
  • Acute streptococcal infection caused by Group A beta hemolytic strep
  • Superficial form of cellulitis
  • M/C on face & lower extremities
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7
Q

Erysipelas is often preceded by?
What’s it associated with?

A
  • Recent trauma or pharyngitis (prodrome)
  • Associated with GN, endocarditis, & lymphedema
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8
Q

S&S of Erysipelas?

A
  • FIERY red, indurated, tense, shiny plaque with raised sharply demarcated advancing margins!!
  • Burning
  • Itching
  • Super tender
  • Warm
  • Edema
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9
Q

How do you treat Erysipelas?

A

Drug of choice = Penicillin (if allergic, Macrolides)

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10
Q

Cellulitis is more _________ while Stasis Dermatitis is more __________.

A
  • Unilateral
  • Bilateral
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11
Q

What is Cellulitis?
What’s the m/c/c?
Where is it commonly found?

A
  • A deep infection of the skin
  • M/C/C = Group A Strep (also Staph aureus)
  • Common on lower legs
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12
Q

What’re clinical features of Cellulitis?

A
  • Rubor (red) –> diffuse inflammation of the dermis & SQ tissue
  • Warm
  • Pain
  • Swelling
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13
Q

How do you treat Cellulitis?

A

MUST COVER STAPH & STREP

Uncomplicated - Dicloxacillin, Cephalexin, Clinda

MRSA (+) - Bactrim, Minocycline, Doxy

Severe - Nafcillin for MSSA, Vanco for MRSA

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14
Q

What’s the m/c/c of Bacterial Folliculitis?
What’re major sites of involvement?

A
  • Staph aureus
  • Scalp, Buttocks/Thighs, Chest/Back, Face/Beard
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15
Q

What does Bacterial Folliculitis look like?

A

Discrete papules/pustules surrounding hair follicle

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16
Q

A Furuncle is also known as?

A

Boil (deep folliculitis, painful circumscribed perifollicular abscess)

17
Q

How do you treat a Furuncle?

A
  • I&D
  • Oral abx
  • Warm soaks
18
Q

What’s a more severe version of a Furuncle?

A

A Carbuncle! (cluster of boils that’re very painful)

19
Q

“Hot Tub Folliculitis”

A

Pseudomonas Folliculitis

20
Q

What does the Pseudomonas Folliculitis rash look like?
When do you usu. see it?

A
  • Pruritic, erythematous macules that progress to papules/pustules
  • 8-48 hrs after exposure to contaminated water
21
Q

How do you treat Pseudomonas Folliculitis?

A
  • P. aeuriginosa is usu. a self-limited infection, clearing in 2-10 days