Evaluación funcional de la etapa faríngea de la deglución utilizando sonar Doppler. Revisión crítica de la literatura

Sonar Doppler is a tool that can capture what happens during the pharyngeal stage of swallowing, being the sound perceived and the noting a partial reflection of the motor activity that is triggered. This paper focuses on the possibilities of sonar Doppler and its application in functional assessment of swallowing. The design of this research is retrospective and observational, developed under the systematic review methodology, from bibliographical material, pieces of research and publications of journal articles in English, Portuguese and Spanish, taking the databases of PubMed, SciELO, EBSCO Host, Scopus, Springer, Cochrane, besides specialized magazines in ASHA, MedLine, CEFAC and Redalyc. Although the reliability and validity in the use of sonar Doppler for the functional evaluation of the pharyngeal stage of swallowing are uncertain, it could provide enormous help in diagnosing aspirations and/or penetrations during the swallowing process. We insist on a constant review of the methodology for the correct detection of sounds of swallowing and subsequent analysis and clinical interpretation.