American Academy of Otolaryngology-Head and Neck Surgery Foundation GUIDELINES Apps brought to you free pf charge, courtesy of Guideline Central. Enjoy!
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Figure 5. Abnormal, Type B, Tympanogram Results
(A) A normal equivalent ear canal volume usually indicates middle ear effusion, (B) a low
volume indicates probe obstruction by cerumen or contact with the ear canal, and (C) a
high volume indicates a patent tympanostomy tube or a tympanic membrane perforation.
With permission from Onusko E. Am Fam Physician. 2004;70(9):1713-1720.
