Examination of chew swallow in healthy elderly persons: Does the position of the leading edge of the bolus in the pharynx change with increasing age?
Wataru Fujii,Izumi Kondo,Mikoto Baba,Eiichi Saitoh,Seiko Shibata,Sumiko Okada,Keiko Onogi,Hideki Mizutani +7 more
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For solid foods, the position of the leading edge of the bolus during chewing in the pharynx changed with increasing age; this may affect the number of chew cycles and increasing age.Abstract:
Fujii W, Kondo I, Baba M, Saitoh E, Shibata S, Okada S, Onogi K, Mizutani H: Examination of chew swallow in healthy elderly persons: Does the position of the leading edge of the bolus in the pharynx change with increasing age? Jpn J Compr Rehabil Sci 2011; 2: 48-53 Objective: To determine whether aging infl uences the position of the leading edge of the bolus during chew swallow as identifi ed using videofl uorography (VF). Methods: Subjects comprising 53 healthy individuals (35 men and 18 women; mean age of 54.5 ± 19.3 years and range of 25-89 years), were subdivided into 4 groups: young adults, middle age, sixties, and seventy and over. Subjects underwent lateral VF to evaluate the position of the leading edge of the bolus just prior to the onset of swallowing, with normal chew swallow for solid foods and swallowing on command for liquids. Results: For solid foods, the position of the leading edge of the bolus during chewing changed with increasing age. Mastication time and the number of chew cycles increased with increasing age and were much higher in women than in men for the seventy and over group. Conclusion: For solid foods, the position of the leading edge of the bolus during chewing in the pharynx changed with increasing age; this may affect the number of chew cycles and increasing age. Gender may also affect both of these factors, with women tending to show a deeper transition of the bolus into the pharynx.read more
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Aging and mastication: changes in performance and in the swallowing threshold with natural dentition.
TL;DR: The results of this study indicate the persistence of masticatory performance (fixed number of strokes per second) with age, and also indicate an age‐related and dentition‐related increase in the effort expended by the subject to prepare the test food for swallowing.
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Age-Related Changes in Pharyngeal and Supraglottic Sensation
John H. Martin,Beverly Diamond,Jonathan E. Aviv,Michael E. Jones,Monte S. Keen,Tien Ahn Wee,Andrew Blitzer +6 more
TL;DR: If sensory discrimination in the area innervated by the superior laryngeal nerve diminishes with increasing age is determined by applying a previously described new device and technique that utilizes brief air pulse stimulation of the anterior wall of the pyriform sinus, sensory discrimination can be reliably determined.
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Coordination of deglutition and phases of respiration: effect of aging, tachypnea, bolus volume, and chronic obstructive pulmonary disease.
Reza Shaker,Qun Li,Junlong Ren,William Townsend,Wylie J. Dodds,Bonnie J. W. Martin,Mark Kern,A. Rynders +7 more
TL;DR: It is concluded that in resting young volunteers the majority of deglutitions are coupled with the expiratory phase of swallowing, and this coupling is increased in frequency by the presence of a liquid bolus and tachypnea.
Journal ArticleDOI
Coordination of Deglutitive Glottal Function and Pharyngeal Bolus Transit During Normal Eating
TL;DR: In more than half of the instances, during normal eating, food enters the pharynx during the preparatory phase before a swallow is initiated, the path of pharyngeal transit of solid bolus is different from that of liquid bolus, and the epiglottal edge appears to be the most sensitive trigger zone for swallowing.
Journal ArticleDOI
Chewing and food consistency: effects on bolus transport and swallow initiation.
Eiichi Saitoh,Seiko Shibata,Koichiro Matsuo,Koichiro Matsuo,Mikoto Baba,Wataru Fujii,Jeffrey B. Palmer +6 more
TL;DR: Chewing appeared to reduce the effectiveness of the posterior tongue-palate seal, allowing oral contents to spill into the pharynx, and eating two-phase foods with both solid and liquid phases may increase the risk of aspiration in dysphagic individuals with impaired airway protective reflexes.