Spirometry

Question 1

Spirometry determines

Answer 1

General respiratory health

Severity of lung defect/dysfunction/or to track progress over time

Question 2

FVC

Answer 2

Forced vital capacity

Question 3

FEV1

Answer 3

Forced expired volume in 1 second

Question 4

Contradictions

Answer 4

Surgery
Myocardial infarction
Ascending aortic aneurysm
Haemoptysis (coughing up blood)
Unstable angina
Hypertension
Confused/demented
Infection control issue

Question 5

PEF

Answer 5

Peak expiratory flow.
Max expiratory flow rate achieved, occurring early in the forced expiratory manoeuver.
Speed of expiration that is being recorded

Question 6

Protocol

Answer 6

Demonstrate
Correct positioning
Practice trials until mastered with 1 min breaks between
Inhale completely/rapidly
Exhale maximally/forcefully until empty
Minimum of 6 seconds
Maintain correct posture
Inhale
Stop

Question 7

EIA (Exercise induced asthma)

Answer 7

Narrowing of the airways in the lungs triggered by strenuous exercise.
Shortness of breath, wheezing, coughing.

Question 8

EIA protocol

Answer 8

Duration: 6-10 mins
Aim: 80-90% of MHR in 2-3 mins
Ventilation should reach 40-60% of predicted MVV
Hold target HR for at least 4 mins

Spirometry:
Pre and Post, 2 trials each
Spirometry measurement at 1, 3, 5, 10, 15, 20 post test

Question 9

Factors that influence spirometry

Answer 9

Anthropometry, age, sex, ethnicity

Question 10

Interpretation of results

Answer 10

Increase stature=Increase in spirometry values except (FEV1/FVC decreases)
Males greater than females except for FEV1/FVC
Caucasians have largest FEV1 and FVC
Polynesians have lowest