The effect of bolus consistency on pharyngeal volume during swallowing: Kinematic analysis in three dimensions using dynamic Area Detector CT
The effect of bolus consistency on pharyngeal volume during swallowing: Kinematic analysis in three dimensions using dynamic Area Detector CT
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DOI：
10.1111/joor.13062
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发表时间：
2020-08-26
影响因子：
2.9
通讯作者：
Gonzalez-Fernandez, Marlis
中科院分区：
文献类型：
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作者：
Ito, Yuriko;Inamoto, Yoko;Gonzalez-Fernandez, Marlis
目的应用三维运动学分析方法，探讨吞咽过程中丸浓度对咽容积的影响。方法8名被试（男2名，女6名，平均±±SD 44±10岁）在吞下10 mL蜂蜜浓液和稀液的同时进行320行区域检测器扫描。测量并比较两次吞咽的关键事件时间（舌骨、软腭、UES）、咽腔和丸的体积。结果在两种一致性中，咽部对舌根的收缩几乎完全湮没。浓、稀液体的最大容积、最小容积和咽部容积收缩比值无显著差异。但咽部容积变化（减小）模式不同。对于粘稠液体，在舌骨前上位运动开始前空气量开始减少，在舌骨前上位运动开始后空气量迅速减少。在吞咽稀液体时，空气量在整个吞咽过程中保持相对较大，并且在吞咽浓液体时开始减少。在UES开启时，稀液和浓液的体积差异不显著；而吞咽稀液体时，空气体积明显增大，使得咽腔的总体积增大。结论两种药液浓度的差异与推动药丸和清除咽部可能残留的舌头运动不同有关。
Objective This study investigated the effects of bolus consistency on pharyngeal volume during swallowing using three-dimensional kinematic analysis. Methods Eight subjects (2 males and 6 females, mean +/- SD 44 +/- 10 years old) underwent a 320-row area detector scan during swallows of 10 mL of honey-thick liquid and thin liquid. Critical event timing (hyoid, soft palate, UES) and volume of pharyngeal cavity and bolus were measured and compared between two swallows. Results The pharynx is almost completely obliterated by pharyngeal constriction against the tongue base for both consistencies. There were no significant differences in maximum volume, minimum volume and pharyngeal volume constriction ratio values between thick and thin liquids. However, the pattern of pharyngeal volume change (decrease) was different. For thick liquids, the air volume started to decrease before the onset of hyoid anterosuperior movement and decreased rapidly after onset of hyoid anterosuperior movement. During thin liquid swallowing, air volume remained relatively large throughout the swallow and started to decrease later when compared to swallowing thick liquids. At onset of UES opening, the bolus volume was not significantly different between thin and thick liquids; however, air volume was significantly larger when swallowing thin liquids, which made the total volume of the pharyngeal cavity larger. Conclusion This difference between the two consistencies is associated with differences in tongue motion to propel the bolus and clear the pharynx from possible residue.