[Normal swallowing spectographic profile in adults]

Introduction: the digital cervical auscultation proposes the spectral identification of sound, including the physical-acoustic phenomenon of normal swallowing processes. For this reason, the evaluative aspects of cervical auscultation are based on the structuring of a spectrographic profile by sections, defined according to the physiological achievement in pharyngeal phase. Method: we use the electronic stethoscope, Littman® model 3200, positioned at point 11 of the neck, which will allow us to make way for the spectrographic analysis procedures in conjunction with the StethAssist software. The data were processed in the Statgraphics Centurion software, which provided statistical description by means of independence tests, in addition to a comparative analysis performed through an ANOVA table and box and whisker chart. Results: the F-test is applied in the ANOVA table; the p-value of the F-test is less than 0.05, so there is a statistically significant relationship between the temporal means of the defined sections, with a level of 95.0% confidence. When proposing the correlation between the biomechanical commands of the pharyngeal phase and the sounds generated by the transport of food, the times found in the spectral analysis of the acoustic wave are needed. Conclusions: a spectral profile of the pharyngeal phase in normal subjects provides the professional parameters of functional interpretation of swallowing, a relevant aspect taking into account the contextual conditions defined in the problem. Cervical auscultation is estimated as a therapeutic accompaniment tool, which can define altered pharyngeal commands.