"Wet voice" as a predictor of penetration and aspiration in oropharyngeal dysphagia

This article describes the results of a study that investigated how well we t phonation can predict penetration and/or aspiration of ingested material in dysphagic patients. Voice samples of 23 subjects with neurologic orophar yngeal dysphagia were collected immediately after each subject had swallowe d nine different boluses on videofluoroscopy. The boluses were graded accor ding to three different consistencies and three different sizes. The presen ce of wetness in the voice was analyzed in relation to any ingested materia l that remained in the larynx or trachea after each bolus was swallowed. Re sults showed that there was no association between the presence of a wet vo ice and penetration or aspiration of prandial material after a swallow. The importance of detecting wet phonation by itself was therefore not consider ed diagnostic in detecting prandial penetration/aspiration by the bedside, but a wet voice may still be useful in identifying those with dysphagia who may have laryngeal dysfunction and therefore may be at risk of penetrating /aspirating any type of material, not just prandial material.