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Normal variance for laryngeal penetration

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Javascript is currently disabled in your browser. Several features of this site will not function whilst javascript is disabled. Received 15 February Published 29 August Volume Pages — Review by Single-blind. Peer reviewers approved by Dr Charles Downs.
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A statistical analysis of cervical auscultation signals from adults with unsafe airway protection

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Physiological Factors Related to Aspiration Risk: A Systematic Review | SpringerLink

Aspiration, where food or liquid is allowed to enter the larynx during a swallow, is recognized as the most clinically salient feature of oropharyngeal dysphagia. This event can lead to short-term harm via airway obstruction or more long-term effects such as pneumonia. In order to non-invasively identify this event using high resolution cervical auscultation there is a need to characterize cervical auscultation signals from subjects with dysphagia who aspirate. In this study, we collected swallowing sound and vibration data from 76 adults 50 men, 26 women, mean age 62 who underwent a routine videofluoroscopy swallowing examination. After calculating a selection of time, frequency, and time-frequency features for each swallow, the safe and unsafe categories were compared using Wilcoxon rank-sum statistical tests. Our analysis found that few of our chosen features varied in magnitude between safe and unsafe swallows with thin swallows demonstrating no statistical variation.
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Physiological Factors Related to Aspiration Risk: A Systematic Review

Click on image for details. Background : Dysphagia is a common complication of stroke and is a potential cause for aspiration and malnutrition and is also associated with poor outcome. Aim : To investigate the incidence and characteristics of penetration-aspiration in post-stroke patients, and to study the relationship between penetration-aspiration and kinematic parameters of swallow. Patients and Methods : We prospectively studied swallowing function in consecutive post-stroke patients and normal adults by videofluoroscopic swallowing studies. The severity of airway invasion, penetration-aspiration, was studied quantitatively and kinematic parameters of swallow i.
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