咽部吞咽通常在液体推注到达咽部后的400ms内开始。相比之下,在吞咽开始之前,加工过的食物颗粒会聚集在谷中。固体食物,吞咽反应时间(SRT),推注通过下颌骨支和舌骨爆发开始(HYB)之间的间隔可以细分为瓣膜聚集时间(VAT)和随后聚集结束至舌骨爆发间隔(EOA至HYB)的组成部分。然而,这些计时措施的预期持续时间仍不清楚。我们旨在研究国际吞咽困难饮食标准化倡议食物水平5(切碎和潮湿[MM5])的健康吞咽中的推注聚集,6(柔软且咬合大小的[SB6]),和7(常规[RG7])。了解健康吞咽中固体颗粒聚集的典型模式和持续时间将为识别患者人群中吞咽时机受损提供信息。
■20名健康成年人(10名男性,法师=28岁,范围:23-55岁)在视频透视检查中吞下了MM5,SB6和RG7食品中的两种。盲目的重复评级确定了吞咽开始时的推注位置,SRT,VAT,和EOA到HYB。使用弗里德曼试验测量基于纹理的差异。85%的丸剂在吞咽开始时,丸剂位置在阈值处/上方,没有纹理的差异。SRT,VAT,和EOA到HYB没有不同的质地,SRT的总体中值(四分位数范围)为99ms(-66至743ms),增值税347ms(66到891ms),对于EOA到HYB,则为-132ms(-231到-83ms)。
■这些数据证实了先前的证据,即在健康的吞咽过程中,食物颗粒在吞咽开始之前在血管中聚集并不罕见。然而,在健康成年人中,瓣膜聚集的持续时间通常<1s。
UNASSIGNED: The pharyngeal swallow typically begins within 400 ms following the arrival of a liquid bolus in the pharynx. By contrast, processed food particles aggregate in the valleculae prior to swallow initiation. With solid foods, swallow reaction time (SRT), the interval between bolus passing the ramus of mandible and hyoid burst onset (HYB) can be subdivided into components of vallecular aggregation time (VAT) and the subsequent end of aggregation to hyoid burst interval (EOA-to-HYB). However, expected durations of these timing measures remain unclear. We aimed to study bolus aggregation in healthy swallowing for International Dysphagia Diet Standardisation Initiative Food Levels 5 (minced and moist [MM5]), 6 (soft and bite-sized [SB6]), and 7 (regular [RG7]). Understanding typical patterns and durations of vallecular aggregation with solids in healthy swallowing will inform the identification of impaired swallow timing in patient populations.
UNASSIGNED: Twenty healthy adults (10 males, Mage = 28 years, range: 23-55 years) swallowed two boluses each of MM5, SB6, and RG7 foods in videofluoroscopy. Blinded duplicate ratings determined bolus location at swallow onset, SRT, VAT, and EOA-to-HYB. Texture-based differences were measured using Friedman\'s tests. Bolus location was at/above the valleculae at swallow onset for 85% of boluses, with no differences by texture. SRT, VAT, and EOA-to-HYB did not vary by texture, with overall median values (interquartile range) of 99 ms (-66 to 743 ms) for SRT, 347 ms (66 to 891 ms) for VAT, and -132 ms (-231 to -83 ms) for EOA-to-HYB.
UNASSIGNED: These data corroborate prior evidence that it is not unusual for food particles to aggregate in the valleculae prior to swallow initiation in healthy swallowing. However, durations of vallecular aggregation are typically < 1 s in healthy adults.