|Exercise Induced Bronchoconstriction (EIB), is a transient narrowing of the airways that follows strenuous exercise. It may appear with or without asthma. In the general population its prevalence is 5-20% whereas it is 30-70% among elite athletes. It occurs in 50- 90% of asthmatics and 40% of subjects with allergic rhinitis EIB is documented by a 10% baseline to post challenge fall in forced expiratory volume in one second (FEV1). Spirometry and exercise testing is the mainstay in the diagnosis of EIB. Since spirometry is effort dependent and requires active coaching, this may present clinical difficulties with younger children and the elderly, or with cognitively or neurologically impaired individuals.
A Comparison of Impulse Oscillometry to Spirometry in the Evaluation of Exercise Induced Bronchoconstriction in Children with Asthma: Sebnem Ozdogan, Danny Hsia, Isabelo Elisan, Cheryl Johnson, Karen Hardy
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