Pulmonary Function Testing Flashcards
(35 cards)
Name an effort dependant test.
Spirometry
Asthma
FEV1 = lower FVC = normal
COPD
FEV1 = lower FVC = lower
Describe the graph made for expiratory flow rates.
Flow rate plotted against forced expiratory volume
Volume dependant expiratory airway closure could be a sign of?
Asthma
Chronic bronchitis
Pressure dependant expiratory airway closure could be a sign of?
Emphysema
What is peak expiratory flow rate expressed in?
Litres per minute
What could peak expiratory flow be measured with?
Simple linear peak flow meter
In obstructive disease is?
NORMAL or REDUCED
In asthma, FVC is?
NORMAL
In COPD, FVC is?
REDUCED
In obstructive disease, the FEV1/FVC ratio is?
<75%
Describe the FEV1 response after a beta agonist in asthma
> 15%
Describe the FEV1 response after a beta agonist in COPD?
<15%
Describe PEFR in obstructive diseases.
REDUCED
Describe PEFR in restrictive diseases.
NORMAL
FEV1 in restrictive diseases?
REDUCED
FVC in restrictive diseases?
REDUCED
In restrictive disease, the FEV1/FVC ratio is?
> 75%
There is no change in FEV1 after giving a beta agonist in restrictive diseases?
TRUE
Name 3 things that bronchial challenge can be done with.
Exercise
Histamine/Mannitol/Methacholine
Allergens/Chemicals
What should be done to diagnose between cardiac and respiratory dyspnoea?
Full cardiopulmonary exercise test (CPET)
How is CPET done?
HR x O2 uptake x ventilatory rate
Describe exercise testing results post exercise in asthma.
Decreased FEV1 or Decreased PEF