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Pathology (Guide) > Microbiology - Wound, Bone + Joint Infections > Flashcards

Microbiology - Wound, Bone + Joint Infections Flashcards

1
Q

What is the aetiology of a surgical site infection?

A

Wound contamination

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2
Q

What are the causative organisms of surgical site infection?

A
  1. S. aureus
  2. E. coli
  3. Strep
  4. Pseudomonas
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3
Q

What is the presentation of a surgical site infection?

A
  • Pain
  • Swelling
  • Failure to Heal
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4
Q

How is a surgical site infection diagnosed?

A

Clinical + wound swabs

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5
Q

What is the management for a surgical site infection?

A

Abx
- Flucloxacillin for S. aureus

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6
Q

What is the aetiology for osteomyelitis?

A

Local or haem spread causes bone infection

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7
Q

What are the causative organisms for osteomyelitis?

A
  1. S. aureus
  2. Strep. spp.
  3. E. coli

Salmonella in Sickle Cell Anaemia

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8
Q

What is the presentation of osteomyelitis?

A
  • Pain
  • Swelling
  • Unwell
  • Febrile
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9
Q

How is oestomyelitis diagnosed?

A
  • MRI
  • Blood culture
  • Bone biopsy (for culture/histology)
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10
Q

What is the management for osteomyelitis?

A
  1. IV Abx
  2. Debridement
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11
Q

What is the aetiology of septic arthritis?

A

Local or haem spread to abnormal joint (e.g. RA) causes joing infection

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12
Q

What are the causative organisms for septic arthritis?

A
  1. S. aureus
  2. Strep
  3. E. coli

Salmonella in Sickle Cell Anaemia

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13
Q

What is the presentation of septic arthritis?

A
  • Red, hot, swollen joint
  • Unwell
  • Febrile
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14
Q

How is septic arthritis diagnosed?

A
  • Joint aspirate (MC + S)
  • Blood cultures
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15
Q

What is the management for septic arthritis?

A
  • IV Abx
  • Drain joint
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16
Q

What is the aetiology of a prosthetic joint infection?

A

Local or haem spread
- Prosthetic joint is RF for septic arthritis

17
Q

What are the causative organisms for a prosthetic joint infection?

A
  1. Staphylococcus epidermis - CoNS (Coagulase negative Staphylococcus)
  2. Staphylococcus aureus
  3. Strep Spp.
  4. E. coli
18
Q

What is the presentation of a prosthetic joint infection?

A
  • Red, hot, swollen joint
  • Failure of joint
  • Pt complains joint was never right
19
Q

How is a prosthetic joint infection diagnosed?

A
  • XR/CT/MRI = loosening
  • Joint aspirate (can cause infection if not already infected)
20
Q

What is the management of a prosthetic joint infection?

A
  • IV Abx
  • Remove prosthesis + revise replacement

Pathology (Guide) (84 decks)

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