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RESPIRATORY > Pulmonary Function Testing > Flashcards

Pulmonary Function Testing Flashcards

1
Q

Name an effort dependant test.

A

Spirometry

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2
Q

Asthma

A 
FEV1 = lower
FVC = normal
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3
Q

COPD

A 
FEV1 = lower 
FVC = lower
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4
Q

Describe the graph made for expiratory flow rates.

A

Flow rate plotted against forced expiratory volume

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5
Q

Volume dependant expiratory airway closure could be a sign of?

A

Asthma

Chronic bronchitis

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6
Q

Pressure dependant expiratory airway closure could be a sign of?

A

Emphysema

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7
Q

What is peak expiratory flow rate expressed in?

A

Litres per minute

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8
Q

What could peak expiratory flow be measured with?

A

Simple linear peak flow meter

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9
Q

In obstructive disease is?

A

NORMAL or REDUCED

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10
Q

In asthma, FVC is?

A

NORMAL

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11
Q

In COPD, FVC is?

A

REDUCED

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12
Q

In obstructive disease, the FEV1/FVC ratio is?

A

<75%

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13
Q

Describe the FEV1 response after a beta agonist in asthma

A

> 15%

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14
Q

Describe the FEV1 response after a beta agonist in COPD?

A

<15%

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15
Q

Describe PEFR in obstructive diseases.

A

REDUCED

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16
Q

Describe PEFR in restrictive diseases.

A

NORMAL

17
Q

FEV1 in restrictive diseases?

A

REDUCED

18
Q

FVC in restrictive diseases?

A

REDUCED

19
Q

In restrictive disease, the FEV1/FVC ratio is?

A

> 75%

20
Q

There is no change in FEV1 after giving a beta agonist in restrictive diseases?

A

TRUE

21
Q

Name 3 things that bronchial challenge can be done with.

A

Exercise
Histamine/Mannitol/Methacholine
Allergens/Chemicals

22
Q

What should be done to diagnose between cardiac and respiratory dyspnoea?

A

Full cardiopulmonary exercise test (CPET)

23
Q

How is CPET done?

A

HR x O2 uptake x ventilatory rate

24
Q

Describe exercise testing results post exercise in asthma.

A

Decreased FEV1 or Decreased PEF

25
Q

What should be done in interstitial lung disease in exercise testing and why?

A

Decrease SaO2

To monitor treatment response

26
Q

Describe TLC in restrictive lung disease.

A

DECREASED

27
Q

Describe TLC in emphysema. Why?

A

INCREASED

Hyperinflation

28
Q

TLC =

A

VC + RV

29
Q

RV =

A

FRC - ERV

30
Q

How is airway resistance measured?

A

Whole body plethysmographsmography
OR
Impulse oscillometry

31
Q

What does impulse oscillometry measure?

A

Airway resistance during quiet tidal breathing different frequencies to give total resistance

32
Q

Exhaled breath nitric oxide measured at a flow of 50mls/s is a marker of?

A

Eosinophilic airway inflammation in asthma

33
Q

Why is nitric oxide not useful in COPD?

A

It is suppressed by smoking

34
Q

What do high levels of exhaled NO mean?

A

Uncontrolled asthmatic inflammation

35
Q

When can NO be used in asthma?

A

When spirometry is normal

RESPIRATORY (14 decks)

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