Quantitative relationship between liquid bolus flow and laryngeal closure during deglutition.
Quantitative relationship between liquid bolus flow and laryngeal closure during deglutition.
复制标题
吞咽过程中液体推注流量与喉部闭合之间的定量关系。
DOI：
10.1152/ajpgi.1993.265.4.g704
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Gilbert,RJ
中科院分区：
文献类型：
--
作者：
Maddock,DJ;Gilbert,RJ
我们采用数字图像分析来评估舌骨、喉和食团的相对运动作为液体食团体积（2-15 ml）的函数，并将这些测量与咽内测压同步。我们比较了食团头部和尾部的运动与舌骨运动的时间、杓状软骨和会厌软骨之间的接触以及食团内压力的关系。从流量图中确定的远端咽部的推注头移动相对较快。远端咽部的初始推注尾部运动延迟与推注体积成比例，并且一旦启动，则比推注头部运动慢。喉部暴露时间（定义为团注头部到达下咽记录传感器和尾部离开下咽记录传感器之间的间隔）随团注体积增加而增加。通过同时绘制舌骨偏移和推注头位置，确定初始前舌骨运动和推注到达喉部之间的时间间隔，尽管推注体积增加，但该时间间隔是恒定的。类似地，会厌-杓状软骨接触和推注到达之间的时间间隔是恒定的，尽管推注量增加。早期阶段的intrabolus压力是暂时与舌根的后方运动，并作为丸量的函数而变化，而后期intrabolus压力是暂时与初始咽壁运动，并没有显着的体积依赖性。这些数据表明，喉关闭和团头流量之间的时间关系保持不变，尽管喉暴露于团的时间作为体积的函数的变化。
We employed digital image analysis to assess the relative movements of the hyoid, larynx, and bolus as a function of liquid bolus volume (2-15 ml), and synchronized these measurements with intrapharyngeal manometry. Comparisons were performed of bolus head and tail movement in relation to the timing of hyoid movement, contact between the arytenoid and epiglottic cartilages, and intrabolus pressures. Bolus head movement in the distal pharynx, as determined from flow plots, was relatively rapid. Initial bolus tail movement in the distal pharynx was delayed proportional to bolus volume, and once initiated, was slower than bolus head movement. Laryngeal exposure time, defined as the interval between bolus head arrival and tail departure at the hypopharyngeal recording sensor, increased as a function of bolus volume. The time interval between the initial anterior hyoid movement and bolus arrival at the larynx, determined by concurrent plotting of hyoid excursion and bolus head position, was constant despite increasing bolus volume. Similarly, the interval between epiglottic-arytenoid contact and bolus arrival was constant despite increased bolus volume. The early phase of intrabolus pressure was temporally associated with posterior movement of the tongue base and varied as a function of bolus volume, whereas late intrabolus pressure was temporally associated with initial pharyngeal wall movement and was not significantly volume dependent. These data indicate that the temporal relationship between laryngeal closure and bolus head flow remains constant despite changes of laryngeal exposure time to the bolus as a function of volume.
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