Final answer:
To investigate intermittent wheezing in the presence of normal spirometry, a bronchial provocation test is recommended to potentially identify asthma or other conditions that routine spirometry may not detect.
Step-by-step explanation:
The spirometry test results of a healthy adult showing no reversibility with a normal study suggest that there is no obstructive lung disease present. However, the complaint of intermittent wheezing could still be significant and warrants further investigation. The best recommendation in this case would be to conduct a bronchial provocation test. This test is done to assess how the lungs react to specific stimuli, which might uncover a diagnosis that routine spirometry failed to detect.
A bronchial provocation test can help to diagnose conditions like asthma, which could cause the symptoms of intermittent wheezing even when spirometry results are normal. It is essential to follow up this recommendation with a detailed medical history and potentially other tests depending on the outcome of the bronchial provocation. Bronchial provocation to rule out exercise-induced bronchoconstriction or exercise-induced asthma. This test involves inhaling a substance that can cause the airways to narrow, such as methacholine.