Hyoid-Bolus Transit Latencies in Normal Swallow

Leonard, Rebecca J.; McKenzie, Susan

doi:10.1007/s00455-006-9025-8

Cited by 38 publications

(37 citation statements)

References 12 publications

(15 reference statements)

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“…These studies investigated vertical and horizontal displacements of the hyoid bone in normal subjects [8][9][10] and the temporal properties of pharyngeal swallowing in normal subjects [11][12][13] and in stroke patients [14]. In a previous study, we examined the use of two-dimensional kinematic swallowing-motion analysis in patients with dysphagia due to different etiologies [15].…”

Section: Introductionmentioning

confidence: 99%

Longitudinal Changes of the Swallowing Process in Subacute Stroke Patients with Aspiration

Seo

Han

2010

Dysphagia

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The purpose of this study was to evaluate longitudinal changes of the swallowing process in stroke patients with aspiration using kinematic analysis. Twenty-eight subacute stroke patients with aspiration on fluid at initial videofluoroscopic swallowing studies (VFSS) were included. Follow-up VFSS was performed at 2-4 weeks after initial studies that were conducted at an average of 26 days after stroke. Temporal and spatial variables were calculated by two-dimensional motion analysis of hyoid bone and epiglottic movements. Swallowing process delays associated with hyoid bone and epiglottic movements were improved at follow-up studies, whereas spatial variables were not. Fourteen patients had recovered from aspiration at follow-up. Time to the start of the hyoid movement was longer in the nonrecovered patient group at initial studies (1.76 ± 1.07 s) than in the recovered group (0.90 ± 0.82 s, P=0.024). Although time-associated differences between the nonrecovered and recovered groups disappeared at follow-up studies, aspiration persisted in the nonrecovered group. This study shows that recovery from delays in the swallowing process is a conspicuous change during the subacute stage in stroke patients with aspiration. Our findings suggest that delayed swallowing triggering at initial VFSS is a useful predictor of poor recovery from aspiration in stroke patients.

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Section: Introductionmentioning

confidence: 99%

Longitudinal Changes of the Swallowing Process in Subacute Stroke Patients with Aspiration

Seo

Han

2010

Dysphagia

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“…Several reports describing oropharyngeal swallowing include qualitative characteristics and quantitative values of temporal and durational swallowing measures for normal and disordered adult swallowing [3][4][5].…”

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confidence: 99%

Preliminary Temporal Measurement Analysis of Normal Oropharyngeal Swallowing in Infants and Young Children

2010

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Temporal measures of normal pediatric oropharyngeal deglutition have not been studied. Knowledge of range and variation of normative temporal measures could define abnormal deglutition and assist in design of appropriate compensatory and rehabilitative treatment techniques. The purpose of this retrospective study was to determine temporal measurements for oral filling, oral transit, onset of laryngeal closure, time of bolus arrival at the valleculae, pharyngeal delay, pharyngeal transit, and UES opening. Videofluoroscopic swallow studies of 15 normally swallowing pediatric subjects were divided into three age groups and method of liquid delivery. Mean, standard deviation, percentages, and extension of the median were utilized to determine relationships of temporal measures. Mean temporal duration increased with age for oral filling, oral transit time, time of laryngeal closure, UES opening, and pharyngeal delay time. However, no significant differences were found between age groups indicating a deglutitive biomechanical adaptation to growth of the oral and pharyngeal cavity. Feeding method for bottle versus cup mean duration increased for oral transit time, laryngeal closure time, UES opening, and pharyngeal delay time. Bolus head location relative to onset of laryngeal vestibule closure changed with increased age and method of feeding. Temporal measures were not significantly different for age groups or feeding methods. Bolus location was at or fully contained in the valleculae at the onset of laryngeal closure and appeared to be a normal finding in functional pediatric swallows and is not indicative of a delay or disorder.

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“…Recent reports [8][9][10][11][12] have focused on the temporal relationship between the bolus location and the hyolaryngeal movements. However, in addition to the temporal coordination, the extent of the hyolaryngeal movement has been reported to be associated with age [13][14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

Influence of Aging on Movement of the Hyoid Bone and Epiglottis during Normal Swallowing: A Motion Analysis

Kang

Kim

et al. 2010

Gerontology

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Background: The age-related effects on various aspects of swallowing have been reported in studies on the temporal relationship between hyolaryngeal movement and bolus location, as well as the extent of hyolaryngeal movement. However, few studies have described the temporal and spatial relationships concurrently. Objective: The main purpose of this study was to define the kinematics of the hyoid bone and epiglottis, during swallowing, on the temporal and spatial relationships concurrently in healthy subjects, and to investigate the influence of aging on hyolaryngeal movement. Methods: We performed a two-dimensional motion analysis of the hyoid bone and epiglottis using videofluoroscopy images in 69 normal subjects. The trajectories of the hyolaryngeal movement and passage of a bolus were superimposed to form one plot. Temporal measurements included initiation and duration of the hyoid bone and epiglottis movement compared to their movement with the bolus. The spatial measurements included vertical and horizontal excursion of the hyoid bone, and the rotational angle of the epiglottis. Results: The duration of supraglottis closure, and the maximal vertical excursion of the hyoid bone were increased in older subjects, more than 65 years of age, compared to younger subjects (p < 0.05). Other temporal and spatial measurements were not statistically significant in the comparisons among the age groups. The vertical distance of the cervical vertebra was related to vertical excursion of the hyoid bone (p = 0.002), and the horizontal distance from the chin to the cervical vertebra was related to the horizontal excursion of the hyoid bone (p = 0.003). Conclusion: This paper describes a method for assessing temporal and spatial relationships of hyolaryngeal movement, and the passage of a bolus during swallowing. The two-dimensional kinematic swallowing motion analyses that were developed provided useful data that changed with age.

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Hyoid-Bolus Transit Latencies in Normal Swallow

Cited by 38 publications

References 12 publications

Longitudinal Changes of the Swallowing Process in Subacute Stroke Patients with Aspiration

Longitudinal Changes of the Swallowing Process in Subacute Stroke Patients with Aspiration

Preliminary Temporal Measurement Analysis of Normal Oropharyngeal Swallowing in Infants and Young Children

Influence of Aging on Movement of the Hyoid Bone and Epiglottis during Normal Swallowing: A Motion Analysis

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