Andrew McNee, aged 28, normally does not suffer from asthma. However, he has an asthma attack at his work. The doctor re

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Andrew McNee, aged 28, normally does not suffer from asthma.
However, he has an asthma attack at his work. The doctor recommends
that Andrew does some pulmonary function tests to confirm his
diagnosis.
Part A. Explain what will happen to resistance in the airways,
and how it will affect airflow during Andrew’s asthma attack. (1
mark)
Part B. Compared to a normal FEV1/FVC ratio, what do you
expect will happen to Andrew’s FEV1/FVC ratio? Explain why
this occurs. (2 marks)
Part C. Andrew has another more
serious asthma attack that causes hypoventilation.
Explain what effect this will have on pH, and what serious
consequence could occur if left untreated. (2 marks)