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Bolus volume swallowing

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https://www.readbyqxmd.com/read/27612587/respiratory-swallowing-coordination-in-normal-subjects-lung-volume-at-swallowing-initiation
#1
D H McFarland, B Martin-Harris, A-J Fortin, K Humphries, E Hill, K Armeson
This study was designed to investigate the significance of bolus types and volumes, delivery methods and swallowing instructions on lung volume at swallowing initiation in normal subjects in a single experiment using a multifactorial approach. Our broad range goal was to determine optimal lung volume range associated with swallowing initiation to provide training targets for dysphagic patients with disordered respiratory-swallow coordination. Our hypothesis was that swallows would be initiated within a limited range of quiet breathing lung volumes regardless of bolus volume, consistency or task...
December 2016: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/27534548/modulation-of-upper-esophageal-sphincter-ues-relaxation-and-opening-during-volume-swallowing
#2
Charles Cock, Corinne A Jones, Michael J Hammer, Taher I Omari, Timothy M McCulloch
UES opening occurs following cricopharyngeus deactivation and submental muscle contraction causing hyolaryngeal elevation and UES distraction. During impedance manometry, the inverse of impedance (admittance) can be used to measure bolus presence and infer UES opening. We hypothesized that the temporal relationship between UES relaxation, opening and hyolaryngeal elevation would change with increasing bolus volume. Simultaneous intramuscular cricopharyngeal (CP) electromyography (EMG), surface submental EMG (SM-EMG), and high-resolution impedance manometry were recorded in eight (aged 27 ± 7 years, 5 M) healthy volunteers, while swallowing 0...
August 17, 2016: Dysphagia
https://www.readbyqxmd.com/read/27198193/a-human-model-of-restricted-upper-esophageal-sphincter-opening-and-its-pharyngeal-and-ues-deglutitive-pressure-phenomena
#3
Hongmei Jiao, Ling Mei, Tarun Sharma, Mark Kern, Patrick Sanvanson, Reza Shaker
Oropharyngeal dysphagia due to upper esophageal sphincter (UES) dysfunction is commonly encountered in the clinical setting. Selective experimental perturbation of various components of the deglutitive apparatus can provide an opportunity to improve our understanding of the swallowing physiology and pathophysiology. The aim is to characterize the pharyngeal and UES deglutitive pressure phenomena in an experimentally induced restriction of UES opening in humans. We studied 14 volunteers without any dysphagic symptoms (7 men, 66 ± 11 yr) but with various supraesophageal reflux symptoms...
July 1, 2016: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/27151943/remifentanil-alters-sensory-neuromodulation-of-swallowing-in-healthy-volunteers-quantification-by-a-novel-pressure-impedance-analysis
#4
S H Doeltgen, T I Omari, J Savilampi
Exposure to remifentanil contributes to an increased risk of pulmonary aspiration, likely through reduced pharyngeal contractile vigor and diminished bolus propulsion during swallowing. We employed a novel high-resolution pressure-flow analysis to quantify the biomechanical changes across the upper esophageal sphincter (UES). Eleven healthy young (23.3 ± 3.1 yr old) participants (7 men and 4 women) received remifentanil via intravenous target-controlled infusion with an effect-site concentration of 3 ng/ml...
June 1, 2016: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/27151083/the-interaction-between-breathing-and-swallowing-in-amyotrophic-lateral-sclerosis
#5
Nazan Simsek Erdem, Kamil Karaali, Ali Ünal, Ferah Kızılay, Candan Öğüş, Hilmi Uysal
The aim of the study is to determine the association between respiratory swallow patterns in amyotrophic lateral sclerosis (ALS) patients. Furthermore, it aims to clarify the role of the dysphagia limit in defining the relationship between swallowing disorders and respiratory disorders. Functional rating scales were used to describe swallowing and respiratory function. Swallowing was observed using the dysphagia limit. Dysphagia limit is the volume at which a second or more swallows are required to swallow the whole bolus...
May 5, 2016: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/27118816/biomechanics-of-pharyngeal-deglutitive-function-following-total-laryngectomy
#6
Teng Zhang, Michal Szczesniak, Julia Maclean, Paul Bertrand, Peter I Wu, Taher Omari, Ian J Cook
OBJECTIVE: Postlaryngectomy, pharyngeal weakness, and pharyngoesophageal junction (PEJ) restriction are the candidate mechanisms of dysphagia. The aims were, in laryngectomees, whether (1) hypopharyngeal propulsion is reduced and/or PEJ resistance is increased, (2) dilatation improves dysphagia, and (3) whether symptomatic improvement correlates with reduced PEJ resistance. DESIGN: Multidisciplinary cross-sectional study. SETTING: Tertiary academic hospital...
August 2016: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/27086361/hyoid-bone-displacement-as-parameter-for-swallowing-impairment-in-patients-treated-for-advanced-head-and-neck-cancer
#7
Sophie A C Kraaijenga, Lisette van der Molen, Wilma D Heemsbergen, Gawein B Remmerswaal, Frans J M Hilgers, Michiel W M van den Brekel
Reduced hyoid displacement is thought to contribute to aspiration and pharyngeal residues in head and neck cancer (HNC) patients with dysphagia. To further study hyoid elevation and anterior excursion in HNC patients, this study reports on temporal/kinematic measures of hyoid displacement, with the additional goal to investigate correlations with clinical swallowing impairment. A single-blind analysis of data collected as part of a larger prospective study was performed at three time points before and after chemoradiotherapy...
April 16, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/26993648/detecting-aspiration-and-penetration-using-fees-with-and-without-food-dye
#8
Stevie Marvin, Sara Gustafson, Susan Thibeault
The objective of this investigation was to determine if there were differences in identifying airway invasion (penetration or aspiration) during fiberoptic endoscopic evaluations of swallowing (FEES) for green-dyed versus non-dyed liquids. Forty adult inpatients in an acute care hospital underwent FEES, with both green-dyed liquids and naturally white liquids. Three speech-language pathologists rated aspiration and penetration for trials of nectar-thick milk and thin milk, both with and without green food dye...
August 2016: Dysphagia
https://www.readbyqxmd.com/read/26970759/utility-of-a-clinical-swallowing-exam-for-understanding-swallowing-physiology
#9
Balaji Rangarathnam, Gary H McCullough
A clinical swallowing examination (CSE) is generally believed to be inadequate for making judgments regarding swallowing physiology compared to objective assessments. A large volume of studies has heavily focused on identifying aspiration using a CSE and research addressing physiologic information gathered from a CSE is sparse. The purpose of this study was to examine the utility of the CSE for assessing physiology compared to videofluoroscopic swallowing studies (VFSS). Data were derived from a prior investigation of sixty adult patients post-stroke tested with CSE and VFSS...
August 2016: Dysphagia
https://www.readbyqxmd.com/read/26939582/a-study-of-healthy-adults-oro-lingual-effort-during-swallowing-using-oropress-a-new-portable-wireless-measurement-tool
#10
Molly Manning, Vincent Casey, Richard Conway, Jean Saunders, Alison Perry
OroPress is a new, low profile, portable, wireless tool that enables stable measurement of tongue pressure during isometric ('pushing') tasks and, more importantly, during swallowing. Using this tool, a pressure-time product, the OroPress Absolute (OPA) parameter, has been developed as a representative measure of lingual effort during swallowing. In a sample of 57 adults aged 20-80+ years, of both sexes and without dysphagia, tongue-palate contact pressures generated while swallowing 5 ml, 10 ml of water and 5 ml custard, were recorded using OroPress...
June 2016: Dysphagia
https://www.readbyqxmd.com/read/26868604/preliminary-evaluation-of-functional-swallow-after-total-laryngectomy-using-high-resolution-manometry
#11
Dylan Lippert, Matthew R Hoffman, Christopher J Britt, Corinne A Jones, Jodi Hernandez, Michelle R Ciucci, Timothy M McCulloch
INTRODUCTION: Understanding of swallowing pressures after total laryngectomy (TL) and what constitutes a "functional" swallow are limited. Mobile structures are altered or removed after TL, with consequent effects on pressure profiles. High-resolution manometry (HRM) can characterize these pressures. METHODS: Six TL subjects without dysphagia and 6 controls underwent pharyngeal HRM. Timing and pressure variables for the velopharynx, mesopharynx, and upper esophageal sphincter (UES) were compared...
July 2016: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/26857555/breakdown-pathways-during-oral-processing-of-different-breads-impact-of-crumb-and-crust-structures
#12
S Jourdren, M Panouillé, A Saint-Eve, I Déléris, D Forest, P Lejeune, I Souchon
Oral processing during bread consumption is a key process related to the dynamics of texture perceptions, sensory stimuli release and starch digestion. The aim of this study was to determine the respective contribution of bread properties (composition and structure of crumb and crust) and of the oral physiology of subjects to the breakdown pathways in the mouth. The properties of the in vivo bread bolus obtained from eight healthy subjects were studied at three key points in time during their oral processing...
March 2016: Food & Function
https://www.readbyqxmd.com/read/26796743/relationship-between-tongue-base-region-pressures-and-vallecular-clearance
#13
Molly A Knigge, Susan Thibeault
Tongue base pressures have been thought to provide primary bolus clearance through the pharynx during swallowing. The relationship between bolus driving pressures and residue remaining in the valleculae after the swallow has not been defined. Thirty-seven dysphagic patients who were evaluated with both videofluoroscopy (VFSS) and high-resolution manometry (HRM) were identified within the University of Wisconsin Voice and Swallowing Outcomes database. Patients were categorized according to binary ratings of presence or absence of vallecular stasis as well as incomplete or complete tongue retraction on VFSS...
June 2016: Dysphagia
https://www.readbyqxmd.com/read/26607158/a-comparative-study-between-modified-starch-and-xanthan-gum-thickeners-in-post-stroke-oropharyngeal-dysphagia
#14
N Vilardell, L Rofes, V Arreola, R Speyer, P Clavé
Thickeners are used in post-stroke oropharyngeal dysphagia (OD) as a compensatory therapeutic strategy against aspirations. To compare the therapeutic effects of modified starch (MS) and xanthan gum (XG) thickeners on swallow safety and efficacy in chronic post-stroke OD patients using clinical and videofluoroscopic (VFS) assessment. Patients were studied by clinical assessment (volume-viscosity swallow test, V-VST) and VFS using 3 volumes (5, 10, 20 mL) and 3 viscosities (liquid, nectar and spoon thick), comparing MS and XG...
April 2016: Dysphagia
https://www.readbyqxmd.com/read/26602372/a-model-experiment-to-understand-the-oral-phase-of-swallowing-of-newtonian-liquids
#15
P Hayoun, J Engmann, S Mowlavi, B Le Reverend, A Burbidge, M Ramaioli
A model experiment to understand the oral phase of swallowing is presented and used to explain some of the mechanisms controlling the swallowing of Newtonian liquids. The extent to which the flow is slowed down by increasing the viscosity of the liquid or the volume is quantitatively studied. The effect of the force used to swallow and of the gap between the palate and the roller used to represent the contracted tongue are also quantified. The residual mass of liquid left after the model swallow rises strongly when increasing the gap and is independent of bolus volume and applied force...
November 5, 2015: Journal of Biomechanics
https://www.readbyqxmd.com/read/26598598/the-effects-of-bolus-volume-and-texture-on-pharyngeal-pressure-events-using-high-resolution-manometry-and-its-comparison-with-videofluoroscopic-swallowing-study
#16
Ju Seok Ryu, Donghwi Park, Yoongul Oh, Seok Tae Lee, Jin Young Kang
BACKGROUND/AIMS: The purpose of this study was to develop new parameters of high-resolution manometry (HRM) and to applicate these to quantify the effect of bolus volume and texture on pharyngeal swallowing. METHODS: Ten healthy subjects prospectively swallowed dry, thin fluid 2 mL, thin fluid 5 mL, thin fluid 10 mL, and drinking twice to compare effects of bolus volume. To compare effect of texture, subjects swallowed thin fluid 5 mL, yogurt 5 mL, and bread twice...
April 30, 2016: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/26492880/videofluoroscopic-predictors-of-penetration-aspiration-in-parkinson-s-disease-patients
#17
Natalie Argolo, Marília Sampaio, Patrícia Pinho, Ailton Melo, Ana Caline Nóbrega
Parkinson's disease (PD) patients show a high prevalence of swallowing disorders and tracheal aspiration of food. The videofluoroscopic study of swallowing (VFSS) allows clinicians to visualize the visuoperceptual and temporal parameters associated with swallowing disorders in an attempt to predict aspiration risk. However, this subject remains understudied in PD populations. Our aim was to identify the predictors of penetration-aspiration in PD patients using the VFSS. Consecutive patients were evaluated using VFSS with different consistencies and volumes of food...
December 2015: Dysphagia
https://www.readbyqxmd.com/read/26376918/a-biomechanical-study-of-hyoid-bone-and-laryngeal-movements-during-swallowing-comparing-the-blom-low-profile-voice-inner-cannula-and-passy-muir-one-way-tracheotomy-tube-speaking-valves
#18
Prateek Srinet, Douglas J Van Daele, Stewart I Adam, Morton I Burrell, Ryan Aronberg, Steven B Leder
The aim of this prospective, consecutive, cohort study was to investigate the biomechanical effects, if any, of the Blom low profile voice inner cannula and Passy-Muir one-way tracheotomy tube speaking valves on movement of the hyoid bone and larynx during swallowing. Ten adult patients (8 male, 2 female) with an age range of 61-89 years (mean 71 years) participated. Criteria for inclusion were ≥18 years of age, English speaking, and ability to tolerate both changing to a Blom tracheotomy tube and placement of a one-way tracheotomy tube speaking valve with a fully deflated tracheotomy tube cuff...
December 2015: Dysphagia
https://www.readbyqxmd.com/read/26271609/electrophysiological-investigations-of-shape-and-reproducibility-of-oropharyngeal-swallowing-interaction-with-bolus-volume-and-age
#19
Enrico Alfonsi, Giuseppe Cosentino, Luca Mainardi, Antonio Schindler, Mauro Fresia, Filippo Brighina, Marco Benazzo, Arrigo Moglia, Elena Alvisi, Brigida Fierro, Giorgio Sandrini
Electrophysiological assessment provides valuable information on physiological and pathophysiological characteristics of human swallowing. Here, new electrophysiological measures for the evaluation of oropharyngeal swallowing were assessed: (1) the activation pattern of the submental/suprahyoid EMG activity (SHEMG); (2) the reproducibility of the oral and pharyngeal phases of swallowing, by calculating the similarity index (SI) of the SHEMG (SI-SHEMG) and of the laryngeal-pharyngeal mechanogram (SI-LPM) during repeated swallows; and (3) kinesiological measures related to the LPM...
October 2015: Dysphagia
https://www.readbyqxmd.com/read/26252981/propagation-curve-and-velocity-of-swallowing-pressure-in-healthy-young-adults
#20
Keigo Matsubara, Yoshihiko Kumai, Yasuhiro Samejima, Eiji Yumoto
The objective of this study is to construct a propagation curve and determine propagation velocities in young healthy adults examined using a 2.64-mm-diameter high-resolution manometry catheter with 36 circumferential sensors; to explore data reproducibility; and to determine whether the swallowing pressure (SP) propagation velocity correlated with bolus volume. Repeated measures with subjects serving as their own controls. Thirty healthy subjects (average age 25.3 years) swallowed saliva and 2, 5, and 10 mL of cold water to determine the maximum SP from the soft palate to the cervical esophagus...
December 2015: Dysphagia
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