cystic fibrosis Flashcards

1
Q

What kind of inheritance

A

Autosomal recessive

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2
Q

What is average survival

A

36 years old

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3
Q

Is it a multi system disorder

A

Yes

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4
Q

What gene is it located on

A

Chromosome 7

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5
Q

What does the mutation cause

A

Alterations in CFTR protein

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6
Q

What is the CFTR protein

A

Chloride channel

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7
Q

What mutation is it

A

F508del

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8
Q

What is first drug available

A

Ivafactor

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9
Q

When is ivafactor given for what mutation

A

G551D

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10
Q

What does CFTR dysfunction do to the lungs

A
  • dehydrated airway surface liquid
  • mucus stasis
  • airway inflammation
  • recurrent infection
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11
Q

What can it lead to

A

Bronchiectasis

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12
Q

Is it a multi system disease

A

Yes

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13
Q

Can it cause cirrhosis

A

Yes

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14
Q

What respiratory symptoms occur

A
  • recurrent respiratory infection
  • chronic cough
  • daily sputum
  • breathless
  • nasal polyps
  • haemoptysis
  • pneumothorax
  • cor pulmonale
  • recurrent sinusitis
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15
Q

What are GI complications

A
  • failure to thrive in infancy
  • intestinal obstructive syndrome
  • steatorrhoea
  • liver disease and cirrhosis
  • increased risk of GI malignancy
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16
Q

When are most CF diagnoses made

A

At newborn screening

17
Q

What does the test involve

A

Measuring immunoreactive trypsinogen

neonatal heel prick test

18
Q

What other investigations can be done

A
  • sweat test

- genetic test (confirmatory)

19
Q

How often should patients be seen

A

Every 3 months

20
Q

What is the long term anti-inflammatory treatment

A

Long term azithromycin

21
Q

What is a great threat to patients

A

Spread of respiratory infections

22
Q

What infection is common

A

Pseudomonas aureginosa

23
Q

What should respiratory failure be treated with

A

Oxygen and non-invasive ventilation

24
Q

What is used to maintain BMI

A

Overnight gastric feeding

25
Q

What has to be screened for annually

A

Related diabetes

26
Q

What drug is a CFTR corrector

A

Lumacaftor

27
Q

What is lumafactor used in combination with

A

Ivafactor

28
Q

what is there an absence of in males

A

vas deferens

29
Q

new born screening

A

dried heel prick test

NOT DIAGNOSTIC !

30
Q

best diagnostic indicator

A

sweat test

31
Q

what are the 2 mutations

A

delF508

G551D