Paediatric Microbiology Flashcards

1
Q

How does microbiology help?

A

Make a diagnosis (infective)
Treat appropriately (empirical)
Interpret results appropriately (“focus”)
Minimise inappropriate antibiotics
Minimise healthcare-care acquired infection

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2
Q

Patient has these symptoms: 2 months old
Miserable
Temperature
Vomiting
Urine microscopy +
Admit
What do you think it is?
What culture do you think grew?

A

UTI
E. Coli

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3
Q

What do we give to help with E. Coli UTI to a child?

A

On IV cefuroxime

Rapid improvement

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4
Q

What other investigations are there for a child with E.Coli UTI?

A

Renal tract US

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5
Q

What are the SCH guidelines for UTI in neonates and infants?

A

UTI in neonates, infants, acutely ill, suspected pyelonephritis or vomiting

First line treatment is IV cefuroxime for 7 days

Oral switch trimethoprim but may need full course IV

NB REFER TO SENSITIVITIES on ICE report

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6
Q

What would you think happened to this patient with these symptoms? What do you think grew?
2 year-old
Complex medical history
Pyrexia
Increase fits
Admitted
Urine for MC&S
IV antibiotics

A

UTI
Culture result after 24hrs shows E.Coli

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7
Q

Patient with this history: 2 year-old
Complex medical history
Pyrexia
Increase fits
Admitted
Urine for MC&S
IV antibiotics
Still feels unwell after IV cefuroxime
What should you do?
Should we change treatment?

What to?

A

Do a sensitivity result after 48 hours
E coli
Extended spectrum ß-lactamase producer (ESBL)
Resistant to all penicillins and cephalosporins
Change to meropenem

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8
Q

Patient has these symptoms
10 year old girl
Ankle pain
Lethargy
A&E
X-ray = ?
What do you think the X-ray shows?

A

Osteomyelitis

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9
Q

The blood culture in a girl with osteomyelitis shows gram- positive cocci in clumps not chains - what is it?

A

SA
Normal flora

Virulent invader
Toxins
Enzymes

Beware MRSA!

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10
Q

What are the SCH guidelines for osteomyelitis/ septic arthritis?

A

First line:
IV Cefuroxime
Liaise with Microbiologist

Treat for (minimum) six weeks
IV > PO switch

Long term therapy: ?OPAT

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11
Q

SA - what should we do with it in osteomyelitis and septic arthritis?

A

Staphylococcus aureus

Sensitive to flucloxacillin

Oral switch once responding

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12
Q

Patient has these symptoms:
Sick seven year old
Temperature
Semi-comatose
Purple rash on skin
What is the likely diagnosis?
Treatment?
Inv?

A

Bacterial meningitis or meningococcal sepsis

First line intravenous cefotaxime
Blood Cultures

EDTA blood for PCR

CSF (?delay)

DON’T DELAY START OF TREATMENT

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13
Q

What is Neisseria meningitidis sensitive to?

A

Cefotaxime
Ceftriaxone

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14
Q

What do we give notifications about to the local Health Protection Unit (PHE)

A

All meningitis
All invasive meningococcal
All encephalitis

24/7

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15
Q

What is used for prophylaxis is meningitis, invasive meningococcal and encephalitis?

A

Ciprofloxacin or Rifampicin (oral)

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16
Q

Patient has these symptoms:
6 year old boy
Previously well
Pyrexial
Miserable
Short of breath

CXR = RLL change
Blood culture done
What does he have

A

Pneumonia

17
Q

Patient has these symptoms:
6 year old boy
Previously well
Pyrexial
Miserable
Short of breath

CXR = RLL change
Blood culture done

Microbiologist rings next day to say: “The blood culture taken yesterday is positive. Gram positive cocci in pairs.”
What grew?

A

Streptococcus pneumoniae aka pneumococcus
Causes most lobar pneumonia

18
Q

What is streptococcus pneumoniae sensitive to?

A

IV benzylpenicillin
PO amoxicillin

19
Q

What does SCH guidelines state for community acquired pneumonia first line?

A

Mild - oral amoxycillin

Severe - IV benzylpenicillin

Length of treatment depends on response

20
Q

In pneumonia - what should do you do if the child isn’t responding?

A

Find the guidelines and look at them

Remember common things occur commonly

Communicate with the microbiologist and the laboratory