Measurement of mass dependence of swallowed food velocity in the pharynx by the ultrasonic method
Measurement of mass dependence of swallowed food velocity in the pharynx by the ultrasonic method
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DOI：
10.3136/nskkk.55.330
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发表时间：
2008-01-01
期刊：
影响因子：
0.2
通讯作者：
Kumagai, Hitoshi
中科院分区：
文献类型：
--
作者：
Hasegawa, Atsuko;Nakazawa, Fumiko;Kumagai, Hitoshi
吞咽的食物移动通过咽部的速度使用超声脉冲多普勒方法测量。在8名受试者中检查了吞咽食物的质量对速度分布的影响。吞咽困难患者容易吸入气管的水和适合吞咽困难患者吞咽的酸奶被用作样本食物。分析了水和酸奶通过咽会厌上方的速度谱，并根据速度谱计算了每个受试者的最大速度和平均速度。酸奶的最大流速小于水的最大流速的50%，表明高速食物颗粒导致吞咽困难患者误吸。酸奶的最大速度随着吞咽质量从15 g减小到3 g而减小。水的最大速度也随着吞咽的质量从6克减少到3克而降低，这表明少量食物（约3克）比大量食物更不可能引起误吸。
The velocity of swallowed foods moving through the pharynx was measured using an ultrasonic pulsed-Doppler method. The effect of the mass of swallowed foods on velocity distribution was examined in eight subjects. Water, which dysphagia patients tend to aspirate into the trachea, and yogurt, which is suitable for dysphagia patients to swallow, were used as sample foods. The velocity spectra taken for water and yogurt passing just above the epiglottis of the pharynx were analyzed.The maximum and mean velocities for each subject were calculated from the velocity spectra. The maximum velocity of yogurt was less than 50% of the maximum velocity of water, indicating that high-velocity food particles cause aspiration in dysphagia patients. The maximum velocity of yogurt decreased as the mass swallowed decreased from 15 to 3g. The maximum velocity of water also decreased as the mass swallowed decreased from 6 to 3g, suggesting that a small amount of food (around 3 g) is less likely to cause aspiration than a larger amount of food.