Abstract
Videoendoscopic examination has many advantage for evaluating the swallowing function. However, this method has one serious fault, namley it is not possible to obtain an image at the precise moment of swallowing. Only a whitish image is observed, the so-called “white out”. This study attempted to simultaneously measure swallowing pressure, to evaluate the swallowing function at the moment of “white out” Patients with unilateral vocal fold palsy were observed before and after thyroplasty. white-out is the only image visible at the moment of swallowing. The swallowing pressure at the moment of swallowing was improved after thyroplasty. The manometric examination is thus condidered to be a good tool for objectively evaluating the swallowing function at the moment of swallowing.