Adult Critical Care Unit, The Royal London Hospital, Barts Health NHS Trust, London, E1 1BB, UK.
Critical Care and Perioperative Medicine Research Group, William Harvey Research Institute, Queen Mary University of London, London, UK.
Sci Rep. 2024 Jun 8;14(1):13198. doi: 10.1038/s41598-024-62032-z.
The oral and suprahyoid muscles are responsible for movements of swallowing. Our study aimed to determine the reproducibility of static and dynamic measurements of these muscles using bedside ultrasound equipment. Forty healthy participants were recruited prospectively. Primary outcomes were evaluation of mass measurements of the anterior bellies of the digastric, mylohyoid, geniohyoid and tongue in B-mode ultrasound. Secondary outcomes were evaluation of geniohyoid muscle layer thickness and function using M-mode. Muscle mass measurements demonstrated little within-participant variability. Coefficient of Variance (CoV) across muscles were: anterior belly digastric (5.0%), mylohyoid (8.7%), geniohyoid (5.0%) and tongue (3.2%). A relationship between sex (r = 0.131 p = 0.022) was demonstrated for the geniohyoid muscle, with males having higher transverse Cross Sectional Area (CSA) (14.3 ± 3.6 mm vs. 11.9 ± 2.5 mm, p = 0.002). Tongue size was correlated with weight (r = 0.356, p = 0.001), height (r = 0.156, p = 0.012) and sex (r = 0.196, p = 0.004). Resting thickness of the geniohyoid muscle layer changed with increasing bolus sizes (f = 3.898, p = 0.026). Velocity increased with bolus size (p = < 0.001, F = 8.974). However swallow time and slope distance did not, potentially influenced by higher coefficients of variation. Oral and suprahyoid muscle mass are easily assessed using bedside ultrasound. Ultrasound may provide new information about muscle mass and function during swallowing.
口腔和舌骨上肌群负责吞咽运动。我们的研究旨在使用床边超声设备确定这些肌肉的静态和动态测量的可重复性。前瞻性招募了 40 名健康参与者。主要结果是评估 B 模式超声下二腹肌前腹、下颌舌骨肌、颏舌骨肌和舌的质量测量。次要结果是使用 M 模式评估颏舌骨肌层厚度和功能。肌肉质量测量显示个体内变异性较小。跨肌肉的变异系数（CV）为：二腹肌前腹（5.0%）、下颌舌骨肌（8.7%）、颏舌骨肌（5.0%）和舌（3.2%）。颏舌骨肌的性别（r=0.131，p=0.022）存在相关性，男性的横截面积（CSA）较高（14.3±3.6mm 与 11.9±2.5mm，p=0.002）。舌的大小与体重（r=0.356，p=0.001）、身高（r=0.156，p=0.012）和性别（r=0.196，p=0.004）相关。随着吞咽量的增加，颏舌骨肌层的静息厚度发生变化（f=3.898，p=0.026）。随着吞咽量的增加，速度增加（p<0.001，F=8.974）。然而，吞咽时间和斜率距离没有变化，这可能受到更高的变异系数的影响。口腔和舌骨上肌群的质量可以使用床边超声轻松评估。超声可能为吞咽过程中肌肉质量和功能提供新信息。
