QuestionSBA
QuestionChoice
The ratio FEV 1 / FVC < 0.7 is seen in obstructive airway diseases such as asthma, COPD, and cystic fibrosis. A bronchodilator reversibility test can be carried out to distinguish between asthma and COPD, which would be positive in someone suffering from asthma. Therefore this is the correct answer.
10008220
a
FEV1 / FVC < 0.7 and bronchodilator reversibility
QuestionChoice
The ratio FEV 1 / FVC > 0/7  is consistent with a restrictive airway disease such as pulmonary fibrosis, acute respiratory distress syndrome or myasthenia gravis. Bronchodilator reversibility tests are not normally carried out in restrictive airway disease. It is therefore not the correct answer.
10008223
d
FEV 1 / FVC > 0.7 and no bronchodilator reversibility
QuestionChoice
This value represents a normal reading in a person not suffering from a respiratory condition. Therefore this is not the correct answer.
10008224
e
FEV 1 / FVC = 0.78
QuestionChoice
The ratio FEV 1 / FVC < 0.7 is seen in obstructive airway diseases such as asthma, COPD and cystic fibrosis. A bronchodilator reversibility test can be carried out to distinguish between asthma and COPD, which would be positive in someone suffering from asthma. Therefore this is not the correct answer for a diagnosis of asthma, as it is more indicative of COPD.
10008221
b
FEV1 / FVC < 0.7 and no bronchodilator reversibility
QuestionChoice
The ratio FEV 1 / FVC > 0/7  is consistent with a restrictive airway disease such as pulmonary fibrosis, acute respiratory distress syndrome or myasthenia gravis. Bronchodilator reversibility tests are not normally carried out in restrictive airway disease. It is therefore not the correct answer.
10008222
c
FEV 1 / FVC > 0.7 and bronchodilator reversibility
Concept
Chapter
2693
3726
Spirometry
Topic
132
Respiratory
14191
A 13-year-old boy undergoes investigations for suspected asthma after reporting shortness of breath during his school sports lessons. He also has a cough that is worse at night.

Which of the following spirometry patterns is consistent with a diagnosis of asthma?
a