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Bolus volume swallowing

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https://www.readbyqxmd.com/read/28814028/quantitative-assessment-of-swallowing-activity-by-mmg-measurement-with-pvdf-film
#1
Hashimoto Takuya, Tsukagoshi Keita, Koike Takuji
Difficulty of swallowing, called dysphagia, leads to aspiration pneumonia which is particularly a big health concern in aging societies. Therefore, prevention and treatment of dysphagia would contribute to extending healthy-life and QOL of elderly people and decreasing healthcare cost. Robotics technologies are expected as one of the effective methods to solve the problem in terms of detecting malfunction in swallowing and recovering swallowing function. The aim of this study is to investigate muscle activity during normal swallowing using mechanomyography (MMG) with PolyVinylidene DiFluoride (PVDF) film which is a ferroelectrics polymer...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28810268/swallowing-mechanics-associated-with-artificial-airways-bolus-properties-and-penetration-aspiration-status-in-trauma-patients
#2
Angela M Dietsch, Christopher B Rowley, Nancy Pearl Solomon, William G Pearson
Purpose: Artificial airway procedures such as intubation and tracheotomy are common in the treatment of traumatic injuries, and bolus modifications may be implemented to help manage swallowing disorders. This study assessed artificial airway status, bolus properties (volume and viscosity), and the occurrence of laryngeal penetration and/or aspiration in relation to mechanical features of swallowing. Method: Coordinates of anatomical landmarks were extracted at minimum and maximum hyolaryngeal excursion from 228 videofluoroscopic swallowing studies representing 69 traumatically injured U...
August 15, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28670665/measurement-of-pharyngo-laryngeal-volume-during-swallowing-using-320-row-area-detector-computed-tomography
#3
Takatoshi Iida, Hitoshi Kagaya, Yoko Inamoto, Seiko Shibata, Eiichi Saitoh, Daisuke Kanamori, Shuji Hashimoto, Kazuhiro Katada, Haruka Tohara, Koichiro Ueda
This study aimed to (1) evaluate changes in bolus and air volumes in the pharyngo-laryngeal cavity during swallowing and (2) determine how differences in these volumes during swallowing are influenced by bolus amount using 320-row area detector computed tomography (320-ADCT). Three-, 10-, and 20-ml honey-thick liquids (5% w/v) were presented to ten healthy subjects placed in a 45° reclining position. 3D images were created in 29 phases at an interval of 0.1 s for 3.15 s. Changes in bolus and air volumes in the pharyngo-laryngeal cavity were calculated...
July 3, 2017: Dysphagia
https://www.readbyqxmd.com/read/28614846/identification-of-swallowing-tasks-from-a-modified-barium-swallow-study-that-optimize-the-detection-of-physiological-impairment
#4
R Jordan Hazelwood, Kent E Armeson, Elizabeth G Hill, Heather Shaw Bonilha, Bonnie Martin-Harris
Purpose: The purpose of this study was to identify which swallowing task(s) yielded the worst performance during a standardized modified barium swallow study (MBSS) in order to optimize the detection of swallowing impairment. Method: This secondary data analysis of adult MBSSs estimated the probability of each swallowing task yielding the derived Modified Barium Swallow Impairment Profile (MBSImP™©; Martin-Harris et al., 2008) Overall Impression (OI; worst) scores using generalized estimating equations...
June 15, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28547922/videofluoroscopic-assessment-of-the-pathophysiology-of-chronic-poststroke-oropharyngeal-dysphagia
#5
N Vilardell, L Rofes, V Arreola, A Martin, D Muriana, E Palomeras, O Ortega, P Clavé
BACKGROUND AND PURPOSE: Oropharyngeal dysphagia (OD) is a major complaint following stroke, associated with poor clinical outcome and high mortality rates. We aimed at characterizing the kinematics of swallow response associated with unsafe swallowing in chronic poststroke patients with OD. PATIENTS AND METHODS: Consecutive poststroke patients with a positive volume-viscosity swallow test for OD 3 months following stroke were studied by videofluoroscopy (VFS). Demographical and clinical factors and kinematics of swallow response were compared between those poststroke patients with safe swallow (penetration-aspiration scale, PAS≤2) and those with unsafe swallow (PAS≥3)...
May 25, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28495001/a-comparison-between-swallowing-sounds-and-vibrations-in-patients-with-dysphagia
#6
Faezeh Movahedi, Atsuko Kurosu, James L Coyle, Subashan Perera, Ervin Sejdić
The cervical auscultation refers to the observation and analysis of sounds or vibrations captured during swallowing using either a stethoscope or acoustic/vibratory detectors. Microphones and accelerometers have recently become two common sensors used in modern cervical auscultation methods. There are open questions about whether swallowing signals recorded by these two sensors provide unique or complementary information about swallowing function; or whether they present interchangeable information. This study aims to compare of swallowing signals recorded by a microphone and a tri-axial accelerometer from 72 patients (mean age 63...
June 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28370114/changes-in-food-bolus-texture-during-mastication
#7
Sachie Wada, Takaharu Goto, Keiko Fujimoto, Megumi Watanabe, Kan Nagao, Atsuko Nakamichi, Tetsuo Ichikawa
The purpose of this study was to survey the changes that occur in bolus texture from intake to swallowing during the mastication process for four types of food materials and to identify how texture is related to the number of chews. We recruited 15 young Japanese participants for this study. The subjects were asked to spit the food bolus just before swallowing when eating four different foods: cracker, boiled rice, hard gelatine gel, and soft gelatine gel. Three physical properties (hardness, adhesiveness, and cohesiveness) were measured in the bolus after being chewed for 25, 50, 75, 100, and 125% of the normal number of chews...
April 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28319639/changes-in-swallowing-after-anterior-cervical-discectomy-and-fusion-with-instrumentation-a-presurgical-versus-postsurgical-videofluoroscopic-comparison
#8
COMPARATIVE STUDY
Lydia Muss, Janina Wilmskoetter, Kerstin Richter, Constanze Fix, Soenke Stanschus, Tobias Pitzen, Joerg Drumm, Sonja Molfenter
Purpose: The purpose of this study was to explore the impact of anterior cervical discectomy and fusion (ACDF) with anterior instrumentation on swallowing function and physiology as measured on videofluoroscopic swallowing studies. Method: We retrospectively analyzed both functional measures (penetration-aspiration, residue) and physiological/anatomical measures (hyoid excursion, posterior pharyngeal wall thickness) in a series of 17 patients (8 men, 9 women, mean age 54 years)...
April 14, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28256028/pharyngeal-stimulus-induced-reflexes-are-impaired-in-infants-with-perinatal-asphyxia-does-maturation-modify
#9
P S Jensen, I K Gulati, T R Shubert, S Sitaram, M Sivalingam, K A Hasenstab, M A El-Mahdy, S R Jadcherla
BACKGROUND: Development of pharyngo-esophageal protective reflexes among infants with hypoxic ischemic encephalopathy (HIE) is unclear. Our aim was to distinguish these reflexes from controls and examine the maturational changes in HIE infants. METHODS: We evaluated 14 HIE infants (seven males) at 41.4±0.6 (HIE Time-1) and 46.5±0.6 (HIE Time-2) weeks postmenstrual age (PMA). Seven controls (three males) were evaluated at 43.5±1.3 weeks PMA. Graded pharyngeal stimulation with liquids (0...
July 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28176891/prevalence-of-swallowing-dysfunction-screened-in-swedish-cohort-of-copd-patients
#10
Margareta Gonzalez Lindh, Monica Blom Johansson, Margareta Jennische, Hirsh Koyi
BACKGROUND: COPD is a common problem associated with morbidity and mortality. COPD may also affect the dynamics and coordination of functions such as swallowing. A misdirected swallow may, in turn, result in the bolus entering the airway. A growing body of evidence suggests that a subgroup of people with COPD is prone to oropharyngeal dysphagia. The aim of this study was to evaluate swallowing dysfunction in patients with stable COPD and to determine the relation between signs and symptoms of swallowing dysfunction and lung function (forced expiratory volume in 1 second percent predicted)...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28147382/-effect-of-bolus-volume-on-pharyngeal-swallowing-dynamics-evaluated-with-small-high-resolution-manometry-catheters
#11
Michael Jungheim, Johanna Kallusky, Martin Ptok
The bolus volume has a modulating effect on the swallowing dynamics, but previously reported adaptations of the pharyngeal function have been inconsistent. Therefore, the aim of this study was to comprehensively evaluate changes of pressure and time parameters in the pharynx and upper esophageal sphincter (UES) in relation to the swallowed bolus volume with high-resolution manometry (HRM). To examine the normal swallowing physiology, particularly thin HRM probes were used, which were expected to influence the investigated structures only minimally...
February 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28119831/increased-bolus-volume-effect-on-delayed-pharyngeal-swallowing-response-in-post-stroke-oropharyngeal-dysphagia-a-pilot-study
#12
Jin-Woo Park, Gyu-Jeong Sim, Dong-Chan Yang, Kyoung-Hwan Lee, Ji-Hea Chang, Ki-Yeun Nam, Ho-Jun Lee, Bum-Sun Kwon
OBJECTIVE: To confirm a relationship between the pharyngeal response and bolus volume, and examine whether increasing the fluid bolus volume can improve penetration and aspiration for stroke dysphagic patients. METHODS: Ten stroke patients with a delayed pharyngeal response problem confirmed by a videofluoroscopic swallowing study (VFSS) were enrolled. Each subject completed two swallows each of 2 mL, 5 mL, and 10 mL of barium liquid thinned with water. The pharyngeal delay time (PDT) and penetration-aspiration scale (PAS) were measured and the changes among the different volumes were analyzed...
December 2016: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28029687/age-related-changes-in-mastication
#13
REVIEW
M A Peyron, A Woda, P Bourdiol, M Hennequin
The paper reviews human mastication, focusing on its age-related changes. The first part describes mastication adaptation in young healthy individuals. Adaptation to obtain a food bolus ready to be swallowed relies on variations in number of cycles, muscle strength and volume of emitted saliva. As a result, the food bolus displays granulometric and rheological properties, the values of which are maintained within the adaptive range of deglutition. The second part concerns healthy ageing. Some mastication parameters are slightly modified by age, but ageing itself does not impair mastication, as the adaptation possibilities remain operant...
December 28, 2016: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/27612587/respiratory-swallowing-coordination-in-normal-subjects-lung-volume-at-swallowing-initiation
#14
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
#15
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
#16
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
#17
RANDOMIZED CONTROLLED TRIAL
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
#18
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...
December 2016: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/27118816/biomechanics-of-pharyngeal-deglutitive-function-following-total-laryngectomy
#19
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
#20
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...
February 2017: European Archives of Oto-rhino-laryngology
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