Preoperative and Intraoperative Evaluation of the Eustachian Tube in Chronic Ear Surgery.

This article discusses the authors' approach to the assessment of the eustachian tube using opening pressure measurement, endoscopic assessment of the protympanic segment of the eustachian tube, and Valsalva computed tomography. A possible algorithm for the evaluation of eustachian tube obstructive disorders is detailed both preoperatively and intraoperatively.