Sequential Coordination between Lingual and Pharyngeal Pressures Produced during Dry SwallowingReport as inadecuate




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BioMed Research International - Volume 2014 2014, Article ID 691352, 10 pages -

Research Article

Department of Speech-Language-Hearing Therapy, Rehabilitation Center, Kawasaki Medical School Hospital, 577 Matsushima, Kurashiki, Okayama 701-0114, Japan

Department of Occlusal and Oral Functional Rehabilitation, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-4 Shikata-cho, Kita-ku, Okayama 700-8525, Japan

Department of Rehabilitation Medicine, School of Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192, Japan

Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry, 1-8 Yamada-oka, Suita, Osaka 565-0871, Japan

Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata 951-8514, Japan

Physiological Function Research Center, Kawasaki Medical School Hospital, 577 Matsushima, Kurashiki, Okayama 701-0114, Japan

Department of Sensory Science, Faculty of Health Science and Technology, KawasakiUniversity of Medical Welfare, 288 Matsushima, Kurashiki, Okayama 701-0193, Japan

Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki, Okayama 701-0193, Japan

Received 19 June 2014; Revised 7 September 2014; Accepted 21 September 2014; Published 18 December 2014

Academic Editor: Reinhold Schmidt

Copyright © 2014 Jitsuro Yano et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The aim of this study was to investigate oropharyngeal pressure flow dynamics during dry swallowing in ten healthy subjects. Tongue pressure TP was measured using a sensor sheet system with five measuring points on the hard palate, and pharyngeal pressure PP was measured using a manometric catheter with four measuring points. The order and correlations of sequential events, such as onset, peak, and offset times of pressure production, at each pressure measuring point were analyzed on the synchronized waveforms. Onset of TP was earlier than that of PP. The peak of TP did not show significant differences with the onset of PP, and it was earlier than that of PP. There was no significant difference between the offset of TP and PP. The onset of PP was temporally time-locked to the peak of TP, and there was an especially strong correlation between the onset of PP and TP at the posterior-median part on the hard palate. The offset of PP was temporally time-locked to that of TP. These results could be interpreted as providing an explanation for the generation of oropharyngeal pressure flow to ensure efficient bolus transport and safe swallowing.





Author: Jitsuro Yano, Yoichiro Aoyagi, Takahiro Ono, Kazuhiro Hori, Wakami Yamaguchi, Shigehiro Fujiwara, Isami Kumakura, Shogo Min

Source: https://www.hindawi.com/



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