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. Author manuscript; available in PMC: 2012 Jul 23.
Published in final edited form as: Ann Allergy Asthma Immunol. 2011 Jan 6;106(3):191–199. doi: 10.1016/j.anai.2010.11.011

Figure 4.

Figure 4

Clinical scenarios highlight utility of IOS. A, Three-year-old boy with food allergy, eczema, and chest symptoms; unable to perform spirometry. IOS indicates significant reversible obstruction. B, Eight-year-old boy with allergic rhinoconjunctivitis, dyspnea, and wheezing on examination. Normal spirometry but abnormal findings consistent with clinical presentation shown from IOS. C, Sixteen-year-old male adolescent with recurrent pneumothoraces unable to perform spirometry. Impulse oscillometry performed without event, showing normal lung function.