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  • 1
    Electronic Resource
    Electronic Resource
    Videomanometric aspects of pharyngeal constrictor activity (1996)
    Springer
    Dysphagia 11 (1996), S. 83-86 
    Details
    ISSN: 1432-0460
    Keywords: Pharynx ; Pharyngoesophageal segment ; Manometry ; Radiology ; Dysphagia ; Deglutition ; Deglutition disorders
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Pressure changes were registered with videomanometry (simultaneous manometry and barium swallow) in the pharynx and in the pharyngoesophageal segment (PES) during swallowing. A considerable longitudinal asymmetry was found. Peak pressure was highest in the PES, lower in the inferior constrictor area, and lowest at the level of the tongue base. The rate of pressure rise was highest at the level of the PES. The speed of propagation of the contraction wave was 13 (±2) cm/sec. There was no correlation between the measured variables (i.e., peak pressure, rate of pressure rise, and speed of contracting wave). Our findings can partly be explained by different mechanical constraints at different levels of the pharynx but may also reflect the organization of neural control of swallowing in the brainstem. Knowledge of transducer position and orientation is essential for the evaluation of pharyngeal pressure during swallowing. Such knowledge is best achieved by performing manometry simultaneously with fluoroscopy, i.e., videomanometry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00417894
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Simultaneous videoradiography and pharyngeal solid state manometry (videomanometry) in 25 nondysphagic volunteers (1995)
    Springer
    Dysphagia 10 (1995), S. 36-41 
    Details
    ISSN: 1432-0460
    Keywords: Manometry ; Pharynx ; Dysphagia ; Radiography ; Deglutition ; Deglutition disorders
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Recent technological advances in manometry, including solid state transducers and computerized analysis, allows for reliable interpretation of intraluminal pharyngeal pressures. Simultaneous videoradiography (barium swallow) provides fluoroscopic control of the manometric sensors (videomanometry), thereby eliminating the uncertainty of sensor dislocation during laryngeal elevation. This is the first study describing normal manometric parameters in videomanometry during barium swallow. Seven manometric parameters and six videoradiographic parameters were analyzed. We included 25 nondysphagic volunteers with normal videoradiographic parameters in the study. The examination was performed in an upright physiologic position during 10-ml barium and dry swallows. Mean resting pressure in the upper esophageal sphincter was 89.6±32.6 (±2 SD) mmHg. Mean residual pressure during relaxation of the upper esophageal sphincter was 7.2±8.0 (±2 SD) mmHg during barium swallow and 3.8±6.2 (±2 SD) mmHg during dry swallow. The mean duration of upper esophageal sphincter relaxation was 601±248 (±2 SD) msec. The mean peristaltic contraction of the upper esophageal sphincter was 253.8±142.8 (±2 SD) mmHg. Fourteen (56%) of the 25 had a measurable intrabolus pressure (mean 33.2±17.3 mmHg) at the level of the inferior pharyngeal constrictor. A specific finding was discovered when the epiglottis tilts down hitting the manometric sensor. This epiglottic tilt was identified in 7 subjects (28%) and caused pressures of around 600 mmHg. A standardized manometric technique is important in videomanometry, and normal values as described in this study are essential in clinical use.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00261278
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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