An impedance-manometry based method for non-radiological detection of pharyngeal postswallow residue
| Autor: | Omari, Taher, Dejaeger, Eddy W, Tack, Jan, van Beckevoort, Dirk, Rommel, Nathalie |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| Popis: | Author version made available in accordance with the publisher's policy. INTRODUCTION: Post-swallow residue is indicative of impaired pharyngeal bolus clearance. The integrated nadir impedance to impedance ratio (iZn/Z) is a novel functional variable that can be derived using automated impedance manometry (AIM). In this study the post-swallow pharyngeal iZn/Z was evaluated as a potential correlate post-swallow residue and therefore predictor of ineffective swallowing. METHODS: Optimal iZn/Z criteria were determine using a database of 50 randomly selected bolus swallows recorded with impedance, manometry and videofluoroscopy. The iZn/Z was derived for a region of interest (ROI), spanning the mid point of the pharyngeal stripping wave to the UES proximal margin and from 0.25-1.25sec after the peak of the pharyngeal stripping wave. Videofluorscopy was scored by four experts using a six point bolus residue scale (BRS) score. Optimised criteria for iZn/Z were then applied to a much larger database of 225 swallows recorded scored for residue by one expert observer. RESULTS: Amongst individual data-base swallows iZn/Z was significantly correlated with average expert BRS score (r = 0.748, p |
| Databáze: | OpenAIRE |
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