Definition
Eustachian tube patency refers to how much the eustachian tube is open. The eustachian tube runs between the middle ear and the throat. This tube controls the pressure behind the eardrum and middle ear space.
Patency is the normal state of the eustachian tube. Ear infections or altitude changes can increase pressure in the ear, causing the eustachian tube to become blocked.
Pictures & Images
Ear anatomy
The ear consists of external, middle, and inner structures. The eardrum and the three tiny bones conduct sound from the eardrum to the cochlea.
Eustachian tube anatomy
The eustachian tube is the tube that runs between the middle ear and pharynx and regulates the ear pressure around the ear drum.
nt
Review Date : 1/5/2009
Reviewed By : Reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only — they do not constitute endorsements of those other sites. © 1997- 2010 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
