Week 4 - PFTs Flashcards
1
Q
What are the indications for spirometry?
A
Diagnostic
Monitoring
Disability
Research
2
Q
What are the contra-indications for PFTs?
A
Pneumothorax Haemoptysis of unknown origin Aneurysm Recent MI or unstable angina CVS instability Cerebral instability Recent surgery
3
Q
What are the factors influencing airway resistance?
A
Types of flow Lung volume Elastic recoil Bronchial smooth muscle tone Airway obstructions
4
Q
What is measured? (4 things)
A
FVC
FEV1
FEV1/ FVC
PEFR
5
Q
Describe how to perform the test
A
Sit upright, loose clothing
After a relaxed breath, take a max breath in
Seal lips around mouthpiece
Blow out as fast and completely as possible
3 acceptable spirographs are used
6
Q
What does an acceptable spirogram demonstrate?
A
Quick and forceful expiration
No coughing
Smooth lines on graphs
Min exhalation time of 6 secs with no change in volume in last second
7
Q
How are spirometry results classified?
A
Normal
Restrictive - a restriction in lung volume
Obstructive - an obstruction to flow
