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Bolus effects swallowing

S Sanagapalli, A Emmanuel, R Leong, S Kerr, L Lovat, R Haidry, M Banks, D Graham, A Raeburn, N Zarate-Lopez, R Sweis
BACKGROUND: Esophageal dysmotility may predispose to Barrett's esophagus (BE). We hypothesized that high-resolution manometry (HRM) performed with additional physiologic challenge would better delineate dysmotility in BE. METHODS: Included patients had typical reflux symptoms and underwent endoscopy, HRM with single water swallows and adjunctive testing with solids and rapid drink challenge (RDC) before ambulatory pH-impedance monitoring. BE and endoscopy-negative reflux disease (ENRD) subjects were compared against functional heartburn patient-controls (FHC)...
March 15, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
Jitsuro Yano, Yoichiro Aoyagi, Takahiro Ono, Kazuhiro Hori, Wakami Yamaguchi, Shigehiro Fujiwara, Isami Kumakura
The effects of bolus volume and flow time on the sequential coordination of tongue pressure (TP) and pharyngeal pressure (PP), which are important in the biomechanics of swallowing, are unclear. In this study, we measured TP and PP simultaneously in 10 healthy adults at multiple points during dry swallowing and the swallowing of 5 ml and 15 ml of liquids with different viscosities, and investigated changes in the timing of the onset, peak, and offset of these pressures. TP was measured using a sensor sheet system with five measuring points on the hard palate, and PP was measured using a manometry catheter with four measuring points...
March 6, 2018: Physiology & Behavior
James Curtis, Jonelyn Langenstein, Sarah Schneider
The Dynamic Swallow Study (DSS) is a methodology used to objectively and quantitatively assess swallowing kinematics during Videofluoroscopic Swallow Studies (VFSS). No DSS normative data exist delineating superior and anterior hyoid displacement (Hsup and Hant , respectively), nor the ratio between Hsup and Hant (SAratio ). The aims of this study were to (1) establish normative data for Hsup , Hant , and SAratio and (2) assess the effects of age, sex, and bolus size on these measures in non-dysphagic patients, within the context of DSS...
February 14, 2018: Dysphagia
Takanori Tsujimura, Taku Suzuki, Midori Yoshihara, Shogo Sakai, Naomi Koshi, Hirokazu Ashiga, Naru Shiraishi, Kojun Tsuji, Jin Magara, Makoto Inoue
Swallowing pressure generation is important to ensure safe transport of an ingested bolus without aspiration or leaving residue in the pharynx. To clarify the mechanism, we measured swallowing pressure at the oropharynx (OP), upper esophageal sphincter (UES), and cervical esophagus (CE) using a specially designed manometric catheter in anesthetized rats. A swallow-evoked by punctate mechanical stimulation to the larynx-was identified by recording activation of the suprahyoid and thyrohyoid muscles using electromyography (EMG)...
January 4, 2018: Journal of Applied Physiology
Yoko Inamoto, Eiichi Saitoh, Yuriko Ito, Hitoshi Kagaya, Yoichiro Aoyagi, Seiko Shibata, Kikuo Ota, Naoko Fujii, Jeffrey B Palmer
This study investigated the effects of Mendelsohn maneuver with three-dimensional kinematic analysis. Nine female speech-language pathologists (nine females, mean ± SD 27.1 ± 3.5 years old) underwent 320-row area detector scan during swallows of 4-ml nectar-thick liquid using with no maneuvers (control) and with Mendelsohn maneuver (MM). Critical event timing (hyoid, soft palate, epiglottis, laryngeal vestibule, true vocal cords (TVC), UES), hyoid and laryngeal excursion, cross-sectional area of UES, and volume of pharyngeal cavity and bolus were measured and compared between two swallows...
December 26, 2017: Dysphagia
Hiroshige Taniguchi, Yoichiro Aoyagi, Koichiro Matsuo, Kazuharu Nakagawa, Eiichi Saitoh
Swallowing reflex is known to be evoked by gastroesophageal regurgitation or esophageal stimulation in animal studies. However, details regarding the stimulating material, bolus size, and stimulation area remain unclear for the stimulation-induced type of swallowing reflex in human. Here, we evaluated the effects of different kinds of stimulation via water and air injection of the esophagus on the initiation of the swallowing reflex. Nine healthy individuals participated in this study. A fiberoptic endoscope was passed transnasally and a thin catheter for injection was passed through the other side...
December 16, 2017: Journal of Oral Rehabilitation
Marcia Regina Kfouri Bernardi Regueiro, Weslania Viviane Nascimento, Luana Casari Parreira, Roberto Oliveira Dantas
OBJECTIVE: The volume of swallowed bolus affects the pharyngeal transit duration. The sex and corporal height of individuals may likely influence this effect. The aim of this investigation was to determine the influence of sex and corporal height on the pharyngeal transit modification produced by the swallowed bolus volume. METHODS: Forty healthy volunteers, 20 men and 20 women, including tall (10 men and 10 women, corporal height: 1.71--2.07m) and short (10 men and 10 women, corporal height: 1...
November 2017: Clinics
Eiji Kondo, Osamu Jinnouchi, Seiichi Nakano, Hiroki Ohnishi, Ikuji Kawata, Hidehiko Okamoto, Noriaki Takeda
Objective: The aim of this study was to assess whether aural stimulation with ointment containing capsaicin improves swallowing function in elderly patients with dysphagia. Study design: A randomized, placebo-controlled, double-blind, comparative study. Settings: Secondary hospital. Patients and methods: Twenty elderly dysphagic patients with a history of cerebrovascular disorder or Parkinson's disease were randomly divided into two groups: 10 receiving aural stimulation with 0...
2017: Clinical Interventions in Aging
Mingxing Zhu, Bin Yu, Wanzhang Yang, Yanbing Jiang, Lin Lu, Zhen Huang, Shixiong Chen, Guanglin Li
BACKGROUND: Swallowing is a continuous process with substantive interdependencies among different muscles, and it plays a significant role in our daily life. The aim of this study was to propose a novel technique based on high-density surface electromyography (HD sEMG) for the evaluation of normal swallowing functions. METHODS: A total of 96 electrodes were placed on the front neck to acquire myoelectric signals from 12 healthy subjects while they were performing different swallowing tasks...
November 21, 2017: Biomedical Engineering Online
Sonja M Molfenter, Chuan-Ya Hsu, Ying Lu, Cathy L Lazarus
A significant proportion of healthy seniors report difficulty swallowing, thought to result from age-related decline in muscle bulk/function. Effortful Swallowing (ES) is used both as a compensatory maneuver to improve pharyngeal propulsion/clearance and has been proposed as an exercise to improve pharyngeal strength. This study sought to quantify the immediate kinematic, temporal, and functional changes during an ES maneuver to quantify its exercise potential to combat age-related changes in swallowing. Videofluoroscopy data were collected from 44 healthy seniors (21 male) over 65 years old (mean = 76...
November 17, 2017: Dysphagia
Melanie Peladeau-Pigeon, Catriona M Steele
Purpose: The ability to generate tongue pressure plays a major role in bolus transport in swallowing. In studies of motor control, stability or variability of movement is a feature that changes with age, disease, task complexity, and perturbation. In this study, we explored whether age and tongue strength influence the stability of the tongue pressure generation pattern during isometric and swallowing tasks in healthy volunteers. Method: Tongue pressure data, collected using the Iowa Oral Performance Instrument, were analyzed from 84 participants in sex-balanced and decade age-group strata...
November 9, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
Thomas Richards, Thomas Tudor Hughes, Jake Moss, Tessa Lomax
An 80-year-old woman was admitted to hospital with acute anarthria and severe dysphagia, characterised by loss of voluntary control of the muscles of facial expression, mastication, bolus manipulation (tongue) and pharyngeal constriction, with relative preservation of involuntary movements. Brain imaging revealed an acute infarct in the left frontal operculum and an area of gliosis consistent with an old infarct in the right frontal operculum. A clinical and radiological diagnosis of bilateral anterior frontal opercular syndrome (Foix-Chavany-Marie-syndrome) was made...
October 24, 2017: BMJ Case Reports
G J Brink, W Y Lei, T I Omari, M M J Singendonk, J S Hung, T T Liu, C H Yi, C L Chen
BACKGROUND: Abdominal compression has been implemented as a provocative maneuver in high-resolution impedance manometry (HRIM) to "challenge" normal esophageal physiology with the aim of revealing abnormal motor patterns which may explain symptoms. In this study, we measured the effects of abdominal compression on esophageal functioning utilizing novel pressure-impedance parameters and attempted to identify differences between healthy controls and globus patients. METHODS: Twenty-two healthy volunteers (aged 23-32 years, 41% female) and 22 globus patients (aged 23-72 years, 68% female) were evaluated with HRIM using a 3...
October 24, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
M Marconati, S Raut, A Burbidge, J Engmann, M Ramaioli
The compliance of patients to solid oral dosage forms is strongly conditioned by the perceived ease of swallowing, especially in geriatric and pediatric populations. This study proposes a method, based on an in vitro model of the human oropharyngeal cavity, to study quantitatively the oral phase of human swallowing in presence of single or multiple tablets. The dynamics of swallowing was investigated varying the size and shape of model tablets and adjusting the force applied to the mechanical setup to simulate tongue pressure variations among individuals...
January 15, 2018: International Journal of Pharmaceutics
Ahmad H Alghadir, Hamayun Zafar, Einas S Al-Eisa, Zaheen A Iqbal
BACKGROUND: Swallowing is a systematic process. Any structural, physiological or neurological disturbance in this process may cause dysphagia. Although there are studies that report head/neck movements during mastication, there are fewer studies that show the effect of different head/neck postures on difficulty while swallowing. OBJECTIVES: To observe the effect of different body postures on the self-perceived difficulty while swallowing in normal healthy subjects...
March 2017: African Health Sciences
Hyoung Su Park, Don-Kyu Kim, Sang Yi Lee, Ki-Hwan Park
As part of the aging process, multiple oral physiologic changes occur and these changes may cause individuals to reduce food intake or switch the types of food texture. Thus, the need to develop food products for the elderly has increased. To evaluate the suitability of the food products for the elderly, the evaluation method should be verified and it is important to identify the parameters of mastication and swallowing. Therefore, the purpose of this study was to compare the differences of mastication and swallowing parameters between the young adults and the elderly depending on the varying hardness of rice food product...
October 2017: Journal of Texture Studies
S Shibata, Y Inamoto, E Saitoh, H Kagaya, Y Aoyagi, K Ota, R Akahori, N Fujii, J B Palmer, M González-Fernández
This study investigated the effects of three different volumes of honey-thick liquid on the temporal characteristics of swallowing. Twenty-six healthy subjects (15 males, 11 females) underwent 320-row area detector CT scan while swallowing 3, 10 and 20 mL of honey-thick liquid barium. Three-dimensional images were created at 10 images/s. Kinematic events involving six structures (velopharynx, hyoid bone, epiglottis, laryngeal vestibule (LV), true vocal cords (TVC), upper esophageal sphincter (UES)) and timing of bolus movement were timed using frame by frame analysis...
September 11, 2017: Journal of Oral Rehabilitation
Andrew Ho, Rebecca Affoo, Nicole Rogus-Pulia, Mark Nicosia, Yoko Inamoto, Eiichi Saitoh, Sheldon Green, Sidney Fels
Computer simulation of liquid bolus flow is used to test the assumption that a slip boundary condition approximates a healthy swallow due to the presence of saliva lubricating the bolus. Six dynamic, 320-row area detector CT (ADCT) sequences of normal subjects swallowing thin, nectar, and honey-thick liquids are used in this work. The aerodigestive tract is segmented from the images in order to create a dynamic 3D geometry, which is subsequently used to drive a Smoothed Particle Hydrodynamics (SPH) fluid simulation of the bolus...
July 29, 2017: Computers in Biology and Medicine
Lara Ferris, Mistyka Schar, Lisa McCall, Sebastian Doeltgen, Ingrid Scholten, Nathalie Rommel, Charles Cock, Taher Omari
OBJECTIVES/HYPOTHESIS: Characterization of the pharyngeal swallow response to volume challenges is important for swallowing function assessment. The diameter of the pressure-impedance recording catheter may influence these results. In this study, we captured key physiological swallow measures in response to bolus volume utilizing recordings acquired by two catheters of different diameter. STUDY DESIGN: Ten healthy adults underwent repeat investigations with 8- and 10-Fr catheters...
August 31, 2017: Laryngoscope
T Iizumi, J Magara, T Tsujimura, M Inoue
Mastication is essential to the eating process and forms an important part of feeding behaviour. Many factors related to the food bolus, such as bolus texture and size, are known to influence mastication. The aim of this study was to determine the effects of body posture on (i) chewing duration prior to the first swallow and (ii) patterns of mastication-related EMG activity. We asked 10 healthy adults to chew 8 g of steamed rice with barium sulphate while we recorded masseter, suprahyoid and infrahyoid muscle activity and simultaneously collected videofluorographic images...
November 2017: Journal of Oral Rehabilitation
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