Spirometry Interpretation Worksheet

Spirometry results show: FVC 80 %, FEV1 65%, FEV1/ FVC 68%. What is the most likely pattern?

• Normal

• Restrictive

• Obstructive

• Mixed

• Uninterpretable

Three acceptable maneuvers are obtained, but the difference between the two highest FEV1 values is 250 mL. What should be done?

• Accept results

• Repeat spirometry until criteria are met

• Use the lowest value

• Average all values

• Stop immediately

After bronchodilator administration, FEV1 increases by 15% and 250 mL. What is the interpretation?

• COPD

• Normal response

• Suggestive of asthma

• Restrictive disease

• Invalid test

Which of the following indicates that a spirometry maneuver has reached an acceptable end of exhalation?

• Patient feels tired

• Exhalation lasts 3 seconds

• Volume-time curve reaches a plateau or ≥6 seconds exhalation

• Patient coughs at the end

• FEV1 is normal

Spirometry results: FVC: 70% predicted, FEV1: 65% predicted, FEV1/FVC: 0.85 What is the interpretation?

• Normal

• Obstructive

• Restrictive

• Mixed

• COPD

Spirometry results: FVC: 55% predicted, FEV1: 50% predicted, FEV1/FVC: 0.65 What is the interpretation?

• Normal

• Obstructive

• Restrictive

• Mixed

• Asthma only