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Infection > Surface Infections > Flashcards

Surface Infections Flashcards

1
Q

What is a surface?

A

Interface between a solid and either a liquid or gas

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2
Q

What viruses effect the skin?

A

HPV

Herpes simplex

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3
Q

What gram positive bacteria can affect the skin?

A

Staph aureus
Coagulase negative staph
Corynebacterium

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4
Q

What gram negative bacteria can affect the skin?

A

Enterobacteriaceae

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5
Q

What fungi can affect the skin?

A

Yeasts

Dermatophytes

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6
Q

What parasites can affect the skin?

A

Mites

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7
Q

What flora can affect the eye?

A

Coagulase negative staph

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8
Q

What flora can affect the nasopharynx?

A

Neisseria meningitidis
Strep pneumoniae
Haemophilus influenzae

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9
Q

What flora can affect the mouth?

A

Viridans strep
Neisseria
Lactobacillus

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10
Q

What flora can affect the stomach?

A

Helicobacter
Strep
Staph

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11
Q

What flora can affect the intestine?

A

Bacteriodes
Coliforms
Clostridium

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12
Q

What flora can affect the utretha?

A

Enterobacteriaceae

Lactobacilli

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13
Q

What flora can affect the vagina?

A

Lactobacilli
Diptheroids
Micrococci

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14
Q

What are commensals?

A

Microorganisms carried on the skin and mucosal surfaces - usually harmless

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15
Q

How do people get infections on surfaces?

A

Invasion
Migration
Innoculation
Haematogenous

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16
Q

What is invasion?

A

Transfer from surface into tissue

17
Q

What is migration?

A

Travels from area to another

18
Q

What is inoculation?

A

Into a surgical site / prosthetic joint

19
Q

What is haematogenous?

A

Enters blood stream

20
Q

What are some external surface infections?

A 
Cellulitis 
Pharyngitis 
Conjunctivitis 
UTI 
Gastroenteritis
21
Q

What are some examples of internal surface infections?

A

Endocarditis
Vasculitis
Septic arthritis

22
Q

What is the pathogenesis of surface infections?

A

Adherence
Biofilm formation
Invasion + multiplication

23
Q

What is adherence?

A

Bind to prosthetic surface or cell membrane by pili or fimbriae

24
Q

What is biofilm formation?

A

Bacteria are embedded in ‘slime’ - an extracellular complex secreted by microorganisms

25
Q

What types of host response can occur?

A

Pyogenic = neutrophils -> pus

Granulomatous = fibroblasts/lymphocytes/macrophages -> nodular inflammatory lesions

Infection (13 decks)

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