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 6. Abnormal Type B Tympanogram Results
(A) A normal equivalent ear canal volume usually indicates MEE. (B) A low volume indicates
probe obstruction by cerumen or contact with the ear canal. (C) A high volume indicates a patent
tympanostomy tube or a tympanic membrane perforation.
Reproduced with permission: Onusko E. Tympanometry. Am Fam Physician. 2004;70(9):1713-1720.
