Asthma diagnosis in otolaryngology practice: pulmonary function testing

Pulmonary function testing is an important diagnostic modality in the workup of patients suspected of having asthma. It is also valuable for monitoring response to treatment in patients initiated and sustained on asthma therapy, and for assessing patients with symptoms suggestive of an asthma exacerbation. Spirometry is the most useful test in patients suspected of having asthma, and can easily be performed and interpreted in the otolaryngology office with readily available, inexpensive equipment. Pulmonary function testing should be considered for use in all otolaryngology patients with significant rhinitis and in those suspected of having lower respiratory disease.