Which tests are used in the workup of tympanic membrane perforation (TMP)?

Updated: Dec 14, 2020
  • Author: Robert A Saadi, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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  • Most tympanic membrane perforations (TMPs) are diagnosed using routine otoscopy.

  • Small perforations may require otomicroscopy for identification.

  • Some hearing screening programs include middle ear impedance testing.

  • Screening tympanometry may reveal abnormalities consistent with perforation. Confirmation still requires examination.

  • Always perform audiometry upon initial TMP diagnosis and again before any repair attempt, whether in the office or in the operating room.

    • Preoperative and postoperative audiography should always be performed. A major conductive loss not only alerts the surgeon to the possible existence of ossicular lesions, but documentation of a preexisting sensorineural hearing loss may protect the surgeon from later allegations that the surgery caused the hearing loss.

    • Audiometry often reveals normal hearing. The presence of mild conductive hearing loss is consistent with perforation, and a conductive component of at least 30 dB indicates possible ossicular discontinuity or a pathologic condition.

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