Clinical Study On The Characteristics Of Pharyngeal Swallowing Dynamics In Patients With Cerebral Apoplexy By Digital Ultrasound

1.Objective:1.1 Real-time B/M ultrasound was used to observe the moving distance from hyoid bone to mandible during swallowing in stroke patients with pharyngeal dysphagia,hyoid bone activity time,geniohyoid muscle activity range,geniohyoid muscle activity time,and recorded by ultrasound measurement The above indicators in the process of swallowing were used to calculate the speed of movement of the hyoid bone,the shortening rate of the moving distance from the hyoid bone to the mandible,and the speed of the geniohyoid muscle.By measuring the application of various kinetic indicators in the pharyngeal phase in the process of swallowing assessment.1.2 The moving distance from hyoid bone to mandible during swallowing,the moving time of hyoid bone,the moving speed of hyoid bone,the shortening rate of moving distance from hyoid bone to mandibular bone,the activity of geniohyoid muscle,the activity time of geniohyoid muscle,the moving time of geniohyoid muscle Correlation analysis was performed between activity speed and video fluoroscopic swallowing study(VFSS)grades to find out the indicators with higher correlation.To clarify the best measurement index of ultrasound in swallowing screening,to make up for the shortcomings of the existing VFSS radiation,the low detection rate of bedside screening methods.2.Experimental method30 patients with post-stroke dysphagia who were hospitalized in Tai Zhou hospital from 2021.1 to 2021.12 were selected as the experimental group,and another 30 healthy people were recorded as the control group.All 60 subjects who participated in the experiment were required to swallow 5ml of dilute liquid,and the inspectors used ultrasound equipment to dynamically observe the activities of the hyoid and geniohyoid muscles in the experimental group and the control group,save the images,and record the data:(1)Movement of the hyoid bone: measure the maximum distance between the hyoid bone and the mandible(i.e.the distance at rest),the minimum distance,and the required time,and calculate the moving distance of the hyoid bone,the rate of distance shortening,and the moving speed of the hyoid bone;(2)Chin Hyoid muscle activity:geniohyoid muscle activity,activity time,and geniohyoid muscle activity speed.(3)All patients with dysphagia after stroke are required to complete the VFSS and complete the VFSS grade assessment to analyze the moving distance from the hyoid bone to the mandible,the moving time of the hyoid bone,the moving speed of the hyoid bone,the shortening rate of the moving distance between the hyoid bone and the mandible,and the chin.The degree of correlation between hyoid muscle activity,geniohyoid muscle activity time,geniohyoid muscle activity speed and VFSS grade.All swallowing motion parameters were recorded,and the obtained parameters were processed statistically.3.Experimental resultsThere were significant differences in geniohyoid muscle activity,activity time and activity speed between patients with dysphagia after stroke and healthy people,and the difference was statistically significant(P<0.05).There were significant differences in distance,activity time,activity speed,and distance shortening rate compared with healthy people(P<0.05).The VFSS level of post-stroke dysphagia patients had the highest correlation with the activity of the geniohyoid muscle,and was closely related to the activity of the geniohyoid muscle.Velocity was moderately correlated;VFSS grade was not significantly correlated with mandibular-hyoid mobility,hyoid mobility time,hyoid mobility velocity,shortening rate of mandibular-hyoid distance,and geniohyoid muscle mobility.4.Conclusion4.1 The geniohyoid muscle activity,geniohyoid muscle activity speed,and hyoid bone activity speed measured by ultrasound technology can be clearly used as the detection indicators of swallowing disorders.4.2 The geniohyoid muscle activity and geniohyoid muscle activity speed are closely related to the VFSS grade.Ultrasound technology can complement the existing swallowing assessment technology to provide a more comprehensive swallowing assessment and provide a basis for the precise treatment of swallowing disorders.