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BDS2 BAMS infection & immunity > soft tissue infections > Flashcards

soft tissue infections Flashcards

1
Q

what are the classifications of soft tissue infection?

A 
by microbe
-bacteria
-fungi
-virus
by anatomy
-superficial
-deep
treatment principles
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2
Q

describe S. aureus

A

bacteria
gram+ cocci
virulence factor-panton valentine leukocidin toxin
causes angular cheilitis

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3
Q

what can PVL positive S. aureus cause?

A

necrotising pneumonia

recurrent skin infections

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4
Q

describe S. pyogenes

A

gram+ cocci
group A strep
virulence factors- superantigens & toxic shock syndrome
causes cellulitis

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5
Q

describe S. anginosus group

A

gram+ cocci
virulence factor- intermedilysin (cytotoxin) causes lysis of cell
causes abscess

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6
Q

describe clostridium welchii (anaerobes)

A

virulence factor- alpha toxin (lecithinase)
breaks down cell membranes
causes gas gangrene (clostridial myonecrosis)

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7
Q

describe herpes simplex group

A

virulence factor-DNA lysis
DNA virus
nuclear capsid surrounded by lipid membrane

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8
Q

describe candida albicans

A

fungi

virulence factor- phospholipase

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9
Q

what are the 3 main layers of skin?

A

epidermis
dermis
hair
subcutaneous tissue

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10
Q

what diseases affect the epidermis?

A

impetigo

angular cheilitis

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11
Q

which disease affects the dermis?

A

erysipelas

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12
Q

which diseases affect the hair follicles?

A 
folliculitis
-staph
boils
-deep seated infection
carbuncles
-deep seated infection with multiple heads
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13
Q

which diseases affect the subcutaneous fat?

A 
cellulitis
-erythema & swelling
odontogenic infection
-periorbital tissue
-sublingual/submandibular tissues
-strep anginosis
-mixed microorganism
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14
Q

which disease affects the fascia?

A

necrotising fasciitis

  • fascia around muscle planes
  • staph aureus, strep pyogenase, clostridium welchii
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15
Q

which diseases affect the muscle?

A

myonecrosis, gangrene

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16
Q

which organism causes animal bites to become infectious?

A

pasteurella multicoda

17
Q

what are the treatment principles of soft tissue infection?

A 
diagnosis
surgical debridement
microbiological specimens
antibiotics
review
18
Q

how is MRSA treated?

A

vancomycin

19
Q

how is MSSA treated?

A

flucloxacillin

20
Q

how is S. pyogenes treated?

A

penicillin

21
Q

how is S. anginosus treated?

A

penicillin

22
Q

how is a localised dental abscess treated?

A

surgical treatment only

23
Q

how is a dental abscess with systemic signs and symptoms treated?

A

penicillin V
(phenoxymethyl penicillin)
review

24
Q

how is severe odontogenic infection treated?

A

hospital based treatment to include IV benzyl pen & metronidazole

BDS2 BAMS infection & immunity (6 decks)

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