The Effect of Using Acoustic Analysis to Evaluate Laryngeal Penetration/Aspiration

• Main Authors: Hui-Ya Chang, 張惠雅
• Other Authors: Pao-Chuan Torng
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/40573356699003400880

碩士 === 國立臺北護理健康大學 === 聽語障礙科學研究所 === 99 === Effective dysphagia evaluation may minimize the occurrence of aspiration, and also reduce the possibility of aspiration pneumonia. Thus, identifying whether there is penetration/aspiration or not is a key point in dysphagia evaluation. Nevertheless, present bedside/clinical evaluation has limitations, especially in identifying silent aspiration. Furthermore, instrumental evaluation might not be performed in some clinical settings in Taiwan. To solve this dilemma, Ryu, Park, and Choi (2004) suggested that acoustic analysis might be able to detect penetration/aspiration, and thereby an alternate method for identifying penetration/aspiration during swallowing evaluation. This study investigated the acoustic analysis and perceptual analysis for evaluating penetration/aspiration. Forty-four participants with swallowing disorders were recruited in this study. Videofluoroscopic swallowing study showed that 18 participants demonstrated penetration/aspiration during swallowing and 26 without penetration/aspiration. Results showed that (1) objective acoustic analysis cannot evaluate penetration/aspiration efficiently; however, (2) perceptual analysis can identify penetration/aspiration more efficiently. The findings indicate that (1) in acoustic analysis, some acoustic parameters might be useful in assessing residual on the true vocal folds, but not penetration/aspiration; and (2) in perceptual analysis, speech-language pathologists might focus on all vocal tract resonance instead of vocal folds vibration in identifying penetration/aspiration. In sum, acoustic analysis might suggest residual on the vocal folds, and perceptual analysis might suggest swallowing disorders in the pharyngeal phase of deglutition. Further objective and other efficient assessment methods in identifying penetration/aspiration in bedside/clinical evaluation might be needed.