Bolus aggregation in the oropharynx does not depend on gravity
Bolus aggregation in the oropharynx does not depend on gravity
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DOI：
10.1016/s0003-9993(98)90046-6
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发表时间：
1998-06-01
影响因子：
4.3
通讯作者：
Palmer, JB
中科院分区：
文献类型：
--
作者：
Palmer, JB
目的：探讨大丸在咽部（吞咽前）的聚集是否与重力有关。设计：试验前-试验中，受试者作为自己的对照。地点：医院放射室。参与者：5名无症状成人志愿者。干预措施：当受试者吃含钡的软性和硬性食物时，先坐直，然后面朝下跪（四足位），进行录像透视。主要观察指标：食品在口腔内加工的时间，小囊内的丸剂聚集，咽咽吞咽。结果：咀嚼过的固体食物从口腔到口咽部的运输（II期运输）通常在吞咽开始前几秒开始，无论头部位置或最初的食物稠度如何。在咽部吞咽开始前平均1.7±2.5秒，小囊（会厌和舌头之间）开始聚集（p < 0.001）。第二阶段运输由舌-腭接触驱动。结论：咀嚼过的固体食物从口腔到咽部的运输是由舌腭接触主动驱动的，不依赖于重力。在吞咽前几秒钟，小丸可能会积聚在小囊中。(C) 1998年由美国康复医学大会和美国物理医学与康复学会颁发。
Objective: To determine whether bolus aggregation in the oropharynx (before swallowing) depends on gravity.Design: Before-during trial, with subjects serving as their own controls.Setting: Hospital radiology suite.Participants: Five asymptomatic adult volunteers.Interventions: Videofluorography was performed while subjects ate soft and hard foods containing barium, first seated upright and then kneeling face down (quadruped position).Main Outcome Measures: Duration of food processing in the oral cavity, bolus aggregation in the valleculae, and pharyngeal swallow.Results: Transport of chewed solid food from the oral cavity to the oropharynx (stage II transport) typically started several seconds before onset of swallow, regardless of head position or initial food consistency. Bolus aggregation in the valleculae (between the epiglottis and the tongue) began an average of 1.7 +/- 2.5sec before the onset of the pharyngeal swallow (p < .001). Stage II transport was driven by tongue-palate contact.Conclusions: Transport of chewed solid food from the oral cavity to the pharynx is driven actively by tongue-palate contact and does not depend on gravity. A bolus may accumulate in the valleculae for several seconds before the swallow. (C) 1998 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation.