Antwort:[Dysphagia] temporal measures

[eripley at yahoo.com (Irene Campbell-Taylor)]

There are several studies on the differencs in hyoid movement depending on age, gender and bolus size. Below is one:

Effects of Systematic Bolus Viscosity and Volume Changes on Hyoid Movement Kinematics 

Gloria Chi-Fishman PhD and Barbara C. Sonies 

Dysphagia 2002

Abstract  Using ultrasonography with head and transducer stabilization, this study examined the effects of maximally controlled, systematic changes in bolus viscosity (thin juice-like, 7 cP; nectar-like, 243?260 cP; honey-like, 724?759 cP; spoon-thick, 2760?2819 cP) and volume (5, 10, 20, 30 cc) on hyoid kinematics in 31 healthy subjects (16 male, 15 female) in three age groups (20?39, 40?59, 60?79 years). Frame-by-frame hyoid displacements were tracked from digitized images of 612 swallows. Measures of movement durations, maximal amplitudes, total distances, and peak velocities were subjected to repeated measures multivariate analyses of variance with viscosity, volume, age, and gender as factors. Results showed that (1) spoon-thick swallows had the greatest preswallow gesture and total movement durations; (2) larger-volume swallows had significantly greater maximal amplitudes, forward peak velocity, and total vertical distance; (3) older subjects had longer start-to-max duration
 (though shorter preswallow gesture and total movement durations), greater maximal vertical amplitude, longer total vertical distance, and greater backward peak velocity than younger subjects; (4) males had greater values for all kinematic parameters except preswallow gesture, hyoid-at-max, and max-to-end durations. The results illustrate the importance of examining the interrelations among kinematic variables to better understand task accommodation and motor control strategies. The evidence also supports the concept of suprahyoid?infrahyoid functional adaptation and compensation in the healthy elderly.

 

 


Logopädie im DIAK <logopaedie@diak-ka.de> wrote:might the elevation of the hyoid be an active movement (sort of compensation) by
the patient before onset/trigger of the swallow? we see this quite often in our
elderly patients. you can identify the difference by a short break between the
two components of the movement (up and forward) or in the cranial movement
itself. what do you think about this idea?
anita
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Dr I Campbell-Taylor
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