Eliza visits her doctor complaining of breathlessness. The doctor gets her to monitor her PEF (peak expiratory flow) regularly and also refers her to a respiratory function lab for spirometry to measure FEV1 (forced expiratory volume in 1 second) and FVC (full vital capacity) before and after being given a bronchodilator.
Which of the following would be consistent with a subsequent diagnosis of asthma?

Question

Eliza visits her doctor complaining of breathlessness. The doctor gets her to monitor her PEF (peak expiratory flow) regularly and also refers her to a respiratory function lab for spirometry to measure FEV1 (forced expiratory volume in 1 second) and FVC (full vital capacity) before and after being given a bronchodilator.

Which of the following would be consistent with a subsequent diagnosis of asthma?

Answer

Lower than predicted FVC

Answer

Increased FEV1 post-bronchodilator compared to pre-bronchodilator

Answer

40% higher PEF in the morning than the evening

Answer

Difficulty breathing in before measuring PEF

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Eliza visits her doctor complaining of breathlessness. The doctor gets her to m...

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