Cinefluorographic Analysis of the Mechanism of Swallowing

Ramsey, George H.; Watson, Jason M.; Gramiak, Raymond; Weinberg, Sydney

doi:10.1148/64.4.498

Cited by 160 publications

(41 citation statements)

References 9 publications

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“…The start of movement of the oral bolus was followed by a mean of 500 ms later with the onset of hyolaryngeal excursion. Our data support the literature by suggesting that because the hyoid and larynx work as a functional unit toward laryngeal closure and PES opening during the swallow (1,3,6,7,11,14,16,28,35), laryngeal and hyoid motion were not separated. The onset of laryngeal closure occurred shortly after the initial displacement of the hyoid and averaged 54 ms. Maximal closure of the laryngeal inlet was reached within 10 ms 1 of the onset of closure and nearly synchronously with the onset of PES opening.…”

Section: Discussionsupporting

confidence: 87%

“…Maximal excursion of the hyolaryngeal complex was achieved within an average of 78 ms of the onset of PES opening. These temporal data are consistent with the swallowing physiology literature when considering what is known about the contribution of hyolaryngeal excursion to laryngeal closure and opening of the PES during a safe and efficient liquid swallow (1,3,6,7,11,14,16,28,35,36). Examination of the data illustrated in Fig.…”

Section: Discussionsupporting

confidence: 87%

“…Normative data regarding the temporal coordination of structural movements involved in oral, pharyngeal, laryngeal, and cervical esophageal swallowing have been reported in adults from studies that used combined videoradiographic and manometric pressure recordings (1,3,6,7,11,16,28,35). However, the critical integration of timing and patterning of the respiratory activity surrounding these structural swallowing movements is not known.…”

mentioning

confidence: 99%

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Temporal coordination of pharyngeal and laryngeal dynamics with breathing during swallowing: single liquid swallows

Martin‐Harris

Brodsky

Price

et al. 2003

Journal of Applied Physiology

170

164

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. Temporal coordination of pharyngeal and laryngeal dynamics with breathing during swallowing: single liquid swallows. J Appl Physiol 94: 1735-1743, 2003. First published December 27, 2002 10.1152/japplphysiol.00806.2002The critical integration of timing and patterning between respiratory and swallowing events was studied with simultaneous videofluoroscopic and respiratory recording during single liquid swallows. Respiratory phase patterns and the onsets and durations of 12 predetermined swallowing events and associated respiratory activities were studied. Results showed four highly repeatable, temporally oriented sequences (clusters) of swallowing and related respiratory events. Two respiratory phase patterns were identified without statistically significant differences in frequency of occurrence between age, gender, or race. These findings will aid in the identification of normal and abnormal patterns of breathing and swallowing in patients with dysphagia.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionsupporting

confidence: 87%

mentioning

confidence: 99%

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Temporal coordination of pharyngeal and laryngeal dynamics with breathing during swallowing: single liquid swallows

Martin‐Harris

Brodsky

Price

et al. 2003

Journal of Applied Physiology

170

164

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“…The epiglottis could be folded by the action of the mylohyoideus and stylohyoideus to obturate the laryngeal entrance. Movements of the soft palate and epiglottis during swallowing were reported in adult humans [Saunders et al, 1951;Ramsey et al, 1955;Christrup, 1964], pigs [Larson and Herring, 1996] and dogs [Biewener et al, 1985]. The thyropharyngeus of S. murinus may play an important role in swallowing food in contrast to the pterygopharyngeus and hypopharyngeus.…”

Section: Discussionmentioning

confidence: 99%

Structure of the Palate and Pharynx in the House Musk Shrew <i>(Suncus murinus)</i>

Yoshida

Kitoh²,

Yanagita

2002

Cells Tissues Organs

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Anatomical features of the palates and pharynges in Suncus murinus were examined through a dissecting microscope. The palatopharyngei (PP) on both sides join at the caudal, median line of the palatine velum and converge in an area immediately caudal to a mucosal notch, the pharyngeal torus before radiating into the dorsal wall of the esophagus. Some muscle bundles of the PP are attached to the veli palatini cartilage. The nasopharyngeal cartilage is situated rostral to curved mucosal plicae of the palatine velum. The pharyngeal torus interlocks with the rostrally lying corniculate tubercles. The structural relationships of the corniculate tubercles, pharyngeal torus and PP suggest that muscular tension of the PP sustains the epiglottis and retains it in the nasopharynx, i.e. the PP acts as a circumscribed sphincter around the epiglottis and establishes a short, secure air passageway to the larynx. The nasopharyngeal and veli palatini cartilages could keep the passageway in shape.

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“…This less resistant area is the region of the thyrohyoid membrane, where the internal branch of the superior laryngeal nerve passes to the laryngopharyngeal submucous membrane (6) . Lateral laryngopharyngeal diverticula have been variously considered to be rare (17,23,31) or common (10,20) ; as a pathological entity (1,10,11,22,25,27,28) ; and also as a variation of the normal morphology (2) . They have been described as a pouch or bulge with a narrow or wide neck (10) , and also as true (10) and as false diverticula (6) .…”

Section: Introductionmentioning

confidence: 99%

Lateral laryngopharyngeal diverticula: a videofluoroscopic study of laryngopharyngeal wall in wind instrumentalists

Costa

Alvite

2012

Arq. Gastroenterol.

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CONTEXT: This paper analyze healthy musicians who play wind instruments. OBJECTIVE: To identify possible diverticular formations on the laryngopharyngeal wall produced by pharyngeal overpressure during the use of these instruments. METHODS: Through a videofluoroscopic method, 22 professional musicians had their pharynx analyzed in frontal face and profile, by swallowing 20 mL of barium sulfate solution and blowing against resistance. RESULTS: All the volunteers showed lateral laryngopharyngeal diverticula (3 unilateral and 19 bilateral) with areas ranging from 0.7 to 6 cm². Trumpet and clarinet players showed larger diverticula, on both the right and left sides. Any important complaints were noted spontaneously or after questions. In the barium-swallow analyses, the 41 diverticula previously identified in the blowing tests were not seen or appeared to be smaller, because of the free flux passage from the pharynx to the esophagus. Despite the existence of the other, less resistant areas on the laryngopharyngeal segment, no other protrusions could be found in this group of wind instrumentalists. CONCLUSIONS: The lateral laryngopharyngeal diverticula that occur in blow instrumentalists is distinct of diverticula produced by laryngopharyngeal overpressure determined by abnormally high resistance to flux passage from pharynx to esophagus. In musicians is the persistent and continuous pharyngeal overpressure induced by the resistance of the instrument's mouthpiece will strongly distend the anatomically less resistant areas of the pharynx, producing a large protrusion. Laryngopharyngeal overpressure without abnormal resistance to flux passage explain the way blow instrumentalists protrusions did not appear as full sacs in a barium-swallow test, despite their larger dimensions. As final conclusion the musician-acquired diverticula must be considered as an "occupational overuse syndrome".

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Cinefluorographic Analysis of the Mechanism of Swallowing

Cited by 160 publications

References 9 publications

Temporal coordination of pharyngeal and laryngeal dynamics with breathing during swallowing: single liquid swallows

Temporal coordination of pharyngeal and laryngeal dynamics with breathing during swallowing: single liquid swallows

Structure of the Palate and Pharynx in the House Musk Shrew <i>(Suncus murinus)</i>

Lateral laryngopharyngeal diverticula: a videofluoroscopic study of laryngopharyngeal wall in wind instrumentalists

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