The pressure inside the middle ear can vary by 100 daPa (a very small amount). The eardrum should look smooth.
What abnormal results mean
Tympanometry may reveal any of the following:
tumorin the middle ear
- Fluid in the middle ear
- Lack of contact between the conduction bones of the middle ear
- Perforated ear drum
- Scarring of the tympanic membrane
Review Date: 04/26/2010
Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.