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Bolus effects swallowing

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https://www.readbyqxmd.com/read/28275908/narrow-band-imaging-enhances-the-detection-rate-of-penetration-and-aspiration-in-fees
#1
Julie C Nienstedt, Frank Müller, Almut Nießen, Susanne Fleischer, Jana-Christiane Koseki, Till Flügel, Christina Pflug
Narrow band imaging (NBI) is widely used in gastrointestinal, laryngeal, and urological endoscopy. Its original purpose was to visualize vessels and epithelial irregularities. Based on our observation that adding NBI to common white light (WL) improves the contrast of the test bolus in fiberoptic endoscopic evaluation of swallowing (FEES), we now investigated the potential value of NBI in swallowing disorders. 148 FEES images were analyzed from 74 consecutive patients with swallowing disorders, including 74 with and 74 without NBI...
March 9, 2017: Dysphagia
https://www.readbyqxmd.com/read/28215047/pharyngeal-swallowing-pressures-in-the-base-of-tongue-and-hypopharynx-regions-identified-with-three-dimensional-manometry
#2
Sarah P Rosen, Corinne A Jones, Timothy M McCulloch
OBJECTIVES: This study aims to use three-dimensional (3D) high-resolution manometry to identify circumferential pressure patterns generated within the asymmetrical base-of-tongue and hypopharynx regions of the pharynx during deglutition. STUDY DESIGN: Case series. METHODS: Radial pressures in the regions of interest were evaluated during swallowing events in 12 healthy subjects using 3D high-resolution manometry. RESULTS: Repeated measures analysis of variance revealed asymmetrical pharyngeal clearance pressures in the base-of-tongue and hypopharynx regions during swallowing...
February 19, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28190788/a-comparison-of-cardiopulmonary-effects-and-anaesthetic-requirements-of-two-dexmedetomidine-continuous-rate-infusions-in-alfaxalone-anaesthetized-greyhounds
#3
Setefilla Quirós-Carmona, Rocío Navarrete, Juan M Domínguez, María Del Mar Granados, Rafael J Gómez-Villamandos, Pilar Muñoz-Rascón, Daniel Aguilar, Francisco J Funes, Juan Morgaz
OBJECTIVE: To determine the effects of two dexmedetomidine continuous rate infusions on the minimum infusion rate of alfaxalone for total intravenous anaesthesia (TIVA), and subsequent haemodynamic and recovery effects in Greyhounds undergoing laparoscopic ovariohysterectomy. STUDY DESIGN: Prospective, randomized and blinded clinical study. ANIMALS: Twenty-four female Greyhounds. METHODS: Dogs were premedicated with dexmedetomidine 3 μg kg(-1) and methadone 0...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28181331/effects-of-chin-up-posture-on-the-sequence-of-swallowing-events
#4
Irene Calvo, Kirstyn L Sunday, Phoebe Macrae, Ianessa A Humbert
BACKGROUND: Chin-up posture is frequently used to manage oral dysphagia after head and neck cancer. This prospective study investigates the effects of chin-ups on the sequence of pharyngeal swallowing events. METHODS: Twelve healthy young adults performed 45 consecutive swallows of 5 mL water across 3 phases on videofluoroscopy: 5 swallows in the neutral head position; 30 swallows during chin-up posture; and 10 swallows in the neutral head position. Swallowing kinematic and bolus flow measures for 9 swallowing events were recorded...
February 9, 2017: Head & Neck
https://www.readbyqxmd.com/read/28178125/comprehensive-swallowing-exercises-to-treat-complicated-dysphagia-caused-by-esophageal-replacement-with-colon-a-case-report
#5
Li Jiang, Yujue Wang, Na Li, Weihong Qiu, Huixiang Wu, Jianshan Huo, Meng Dai, Yong Yu, Guifang Wan, Zulin Dou, Weiping Guo
INTRODUCTION: Surgical procedures for colonic replacement of the esophagus are most commonly associated with anastomotic stricture which cause dysphagia. In this report, we describe a rare case of a patient who demonstrated dysphagia resulting from an anastomotic stricture following esophageal replacement with the colon. All the treatments to dilate the anastomotic stricture were ineffective. To investigate the new treatment strategy for a case with complicated dysphagia, clinical dysphagia evaluations, functional oral intake scale (FOIS), videofluoroscopic swallowing study as well as high-resolution manometry were used to evaluate the swallowing function of the patient before and after treatments...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28147382/-effect-of-bolus-volume-on-pharyngeal-swallowing-dynamics-evaluated-with-small-high-resolution-manometry-catheters
#6
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
#7
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/28091677/model-cheese-aroma-perception-is-explained-not-only-by-in-vivo-aroma-release-but-also-by-salivary-composition-and-oral-processing-parameters
#8
E Guichard, M Repoux, E M Qannari, H Laboure, G Feron
The aim of the present paper was to determine, from four model cheeses differing in fat content and firmness and consumed by fourteen well characterised subjects, the respective impacts of in vivo aroma release, bolus rheology, chewing activity, mouth coating and salivary composition on dynamic aroma perception. The originality of the approach is that it considers all the parameters together and is able to evaluate their relative contribution using multi-block partial least square (MB-PLS) regression. The fruity aroma perception of the more hydrophilic compound (ethyl propanoate) was related to its dynamic release parameters before swallowing whereas the blue cheese aroma perception of the more hydrophobic compound (nonan-2-one) was related to its dynamic release parameters after swallowing and was highly impacted by mouth coating...
January 16, 2017: Food & Function
https://www.readbyqxmd.com/read/28029687/age-related-changes-in-mastication
#9
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/28029056/ultrasound-in-dysphagia-rehabilitation-a-novel-approach-following-partial-glossectomy
#10
Katrina M Blyth, Patricia McCabe, Catherine Madill, Kirrie J Ballard
PURPOSE: While the presence of dysphagia following partial glossectomy has been widely reported, there is insufficient quality evidence to guide clinical decision making about the treatment of this disorder. This study investigated a novel dysphagia rehabilitation approach using ultrasound tongue imaging for patient training. METHOD: Initially, a pilot study was conducted to investigate the feasibility of ultrasound visual feedback during swallow tasks. The protocol was then replicated using a single-case experimental designed study to investigate therapeutic effect...
December 28, 2016: Disability and Rehabilitation
https://www.readbyqxmd.com/read/27932241/nonspecific-effects-of-gap-paradigm-on-swallowing
#11
Masaki Yoneda, Kazuya Saitoh
OBJECTIVE: Analogous to the gap paradigm in experiments for saccadic eye movements with very short reaction times, we hypothesized that the initiation of oropharyngeal swallowing movements guided by visual cues are encouraged under experimental conditions using a similar gap paradigm. METHODS: A red visual cue indicating to hold a bolus in the mouth and a blue one indicating to swallow the bolus were sequentially provided on a computer display to 11 healthy participants...
February 1, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/27873091/pre-pharyngeal-swallow-effects-of-recurrent-laryngeal-nerve-lesion-on-bolus-shape-and-airway-protection-in-an-infant-pig-model
#12
Francois D H Gould, B Yglesias, J Ohlemacher, R Z German
Recurrent laryngeal nerve (RLN) damage in infants leads to increased dysphagia and aspiration pneumonia. Recent work has shown that intraoral transport and swallow kinematics change following RLN lesion, suggesting potential changes in bolus formation prior to the swallow. In this study, we used geometric morphometrics to understand the effect of bolus shape on penetration and aspiration in infants with and without RLN lesion. We hypothesized (1) that geometric bolus properties are related to airway protection outcomes and (2) that in infants with RLN lesion, the relationship between geometric bolus properties and dysphagia is changed...
November 21, 2016: Dysphagia
https://www.readbyqxmd.com/read/27861932/residue-influences-quality-of-life-independently-of-penetration-and-aspiration-in-head-and-neck-cancer-survivors
#13
Tanya K Meyer, Jessica M Pisegna, Gintas P Krisciunas, Barbara R Pauloski, Susan E Langmore
OBJECTIVES/HYPOTHESIS: Dysphagia is one of the most significant side effects of the treatment of head and neck cancer. Residue and aspiration are two indicators of dysphagia, but aspiration is historically the only indicator of interest, because it may impact health outcomes. Clinicians have anecdotally used residue as another marker of swallowing dysfunction, but it is understudied. This project investigated the impact of aspiration versus residue on function and quality of life (QoL) in these patients...
November 9, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27823802/in-vivo-observations-and-in-vitro-experiments-on-the-oral-phase-of-swallowing-of-newtonian-and-shear-thinning-liquids
#14
S Mowlavi, J Engmann, A Burbidge, R Lloyd, P Hayoun, B Le Reverend, M Ramaioli
In this study, an in vitro device that mimics the oral phase of swallowing is calibrated using in vivo measurements. The oral flow behavior of different Newtonian and non-Newtonian solutions is then investigated in vitro, revealing that shear-thinning thickeners used in the treatment of dysphagia behave very similar to low-viscosity Newtonian liquids during active swallowing, but provide better control of the bolus before the swallow is initiated. A theoretical model is used to interpret the experimental results and enables the identification of two dynamical regimes for the flow of the bolus: first, an inertial regime of constant acceleration dependent on the applied force and system inertia, possibly followed by a viscous regime in which the viscosity governs the constant velocity of the bolus...
December 8, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27634013/characterization-and-mechanisms-of-the-pharyngeal-swallow-activated-by-stimulation-of-the-esophagus
#15
Ivan M Lang, Bidyut K Medda, Sudarshan R Jadcherla, Reza Shaker
Stimulation of the esophagus activates the pharyngeal swallow response (EPSR) in human infants and animals. The aims of this study were to characterize the stimulus and response of the EPSR and to determine the function and mechanisms generating the EPSR. Studies were conducted in 46 decerebrate cats in which pharyngeal, laryngeal, and esophageal motility was monitored using EMG, strain gauges, or manometry. The esophagus was stimulated by balloon distension or luminal fluid infusion. We found that esophageal distension increased the chance of occurrence of the EPSR, but the delay was variable...
November 1, 2016: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/27562702/in%C3%A2-vitro-effect-of-nicorandil-on-the-carbachol-induced-contraction-of-the-lower-esophageal-sphincter-of-the-rat
#16
Tomonori Shimbo, Takeshi Adachi, Susumu Fujisawa, Mai Hongoh, Takayoshi Ohba, Kyoichi Ono
The lower esophageal sphincter (LES) is a specialized region of the esophageal smooth muscle that allows the passage of a swallowed bolus into the stomach. Nitric oxide (NO) plays a major role in LES relaxation. Nicorandil possesses dual properties of a NO donor and an ATP-sensitive potassium channel (KATP channel) agonist, and is expected to reduce LES tone. This study investigated the mechanisms underlying the effects of nicorandil on the LES. Rat LES tissues were placed in an organ bath, and activities were recorded using an isometric force transducer...
August 2016: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/27562477/therapeutic-exercises-for-affecting-post-treatment-swallowing-in-people-treated-for-advanced-stage-head-and-neck-cancers
#17
REVIEW
Alison Perry, Siew Hwa Lee, Susan Cotton, Catriona Kennedy
BACKGROUND: Head and neck cancer treatment has developed over the last decade, with improved mortality and survival rates, but the treatments often result in dysphagia (a difficulty in swallowing) as a side effect. This may be acute, resolving after treatment, or remain as a long-term negative sequela of head and neck cancer (HNC) treatment. Interventions to counteract the problems associated with dysphagia include swallowing exercises or modification of diet (bolus texture, size), or both...
August 26, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27492408/effects-of-change-in-tongue-pressure-and-salivary-flow-rate-on-swallow-efficiency-following-chemoradiation-treatment-for-head-and-neck-cancer
#18
Nicole M Rogus-Pulia, Charles Larson, Bharat B Mittal, Marge Pierce, Steven Zecker, Korey Kennelty, Amy Kind, Nadine P Connor
Patients treated with chemoradiation for head and neck cancer frequently develop dysphagia. Tissue damage to the oral tongue causing weakness along with decreases in saliva production may contribute to dysphagia. Yet, effects of these variables on swallowing-related measures are unclear. The purpose of this study was (1) to determine effects of chemoradiation on tongue pressures, as a surrogate for strength, and salivary flow rates and (2) to elucidate relationships among tongue pressures, saliva production, and swallowing efficiency by bolus type...
October 2016: Dysphagia
https://www.readbyqxmd.com/read/27489363/sour-taste-increases-swallowing-and-prolongs-hemodynamic-responses-in-the-cortical-swallowing-network
#19
Rachel W Mulheren, Erin Kamarunas, Christy L Ludlow
Sour stimuli have been shown to upregulate swallowing in patients and in healthy volunteers. However, such changes may be dependent on taste-induced increases in salivary flow. Other mechanisms include genetic taster status (Bartoshuk LM, Duffy VB, Green BG, Hoffman HJ, Ko CW, Lucchina LA, Weiffenbach JM. Physiol Behav 82: 109-114, 2004) and differences between sour and other tastes. We investigated the effects of taste on swallowing frequency and cortical activation in the swallowing network and whether taster status affected responses...
November 1, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27469450/efficacy-of-six-tasks-to-clear-laryngeal-mucus-aggregation
#20
Heather Shaw Bonilha, Terri Treman Gerlach, Lori Ellen Sutton, Amy Elizabeth Dawson, Katlyn McGrattan, Paul J Nietert, Dimitar D Deliyski
PURPOSE: Clinicians commonly teach patients alternative clearing behaviors to reduce coughing and hard throat clearing with the assumption that these behaviors clear mucus from the vocal folds. Yet there is limited evidence of the effectiveness of these alternative behaviors at clearing mucus. This study's purpose was to evaluate the efficacy of reducing laryngeal mucus aggregation using alternative approaches in comparison with hard coughing and hard throat clearing in people with and without voice disorders...
March 2017: Journal of Voice: Official Journal of the Voice Foundation
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