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3. Conditions: Rheumatology > Osteomyelitis > Flashcards

Osteomyelitis Flashcards

1
Q

What is the route of infection in infants?

A

Umbillical cord infection

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2
Q

What is the route of infection in children?

A

TONSILS

Boils

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3
Q

What is the route of infection in adults?

A

Central line

UTI

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4
Q

How does bacteria from infection sites spread to the joints?

A

Haematogenously

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5
Q

What organism is the main infective agent in all age groups?

A

Staph aureus

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6
Q

What other organisms can infect infants?

A

Group B strep

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7
Q

What organism can also infect children?

A

E coli

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8
Q

What organism can also infect adults?

A

Strep pyogenes

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9
Q

What are the symptoms of osteomyelitis in infants?

A

Failure to thrive
Irritability
Metaphyseal tenderness

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10
Q

What are the symptoms of osteomyelitis in children?

A

Pain
Acute limp
Refusal to move
Swinging pyrexia

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11
Q

What organism causes sternal OM?

A

Coagulase -ve strep from surgery

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12
Q

What organism may cause OM following UTI?

A

Gonococcus

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13
Q

What organisms cause spinal OM?

A

S aureus

TB

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14
Q

What is the pathophysiology of OM once the bone is infected?

A

Pus forms

Pressure on periosteum –> new bone formation

Vascular stasis also occurs –> venous congestion + arterial thromboembolus –> necrosis

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15
Q

Bloods?

A

Cultures x3
FBC U&Es
CRP
ESR

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16
Q

What is shown on x ray?

A

Nothing in first two weeks

May later show epiphyseal destruction

17
Q

What test must be done before treatment?

A

Aspiration

18
Q

What are the pharmacological treatments of OM?

A

Flucloxacillin = staph A

Empirical if no culture

19
Q

Surgical treatment?

A

Aspiration

Debriment

3. Conditions: Rheumatology (26 decks)

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