Esophageal Sphincter Upper
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Functional Changes of the Upper Esophageal Sphincter in Gastroesophageal Reflux
Abstract Introduction The upper esophageal sphincter (UES) is a muscular structure located at the transition from the pharynx to the esophagus, with the cricopharyngeal muscle as the most important component. During gastroesophageal reflux, the pressure in the UES elevates, which is apparently a protective mechanism to prevent esophagopharyngeal reflux and
International Archives of Otorhinolaryngology. Publicado em: 2022
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2. Oncologic Panendoscopy: Description of an Optimized Procedure Based on Our Experience
Abstract Introduction All patients with a new head and neck squamous cell carcinoma (HNSCC) undergo diagnostic panendoscopy as part of the screening for synchronous second primary tumors. It includes a pharyngolaryngoscopy (PLS), a tracheobronchoscopy and esophagoscopy, and a stomatoscopy. Rigid techniques are risky, with long learning curves. Objective We
International Archives of Otorhinolaryngology. Publicado em: 2022
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3. Adequate Number of Swallows for Pharyngeal Pressure Measurement of a Subject using High-resolution Manometry
Abstract Introduction The number of pressure measurements that need to be recorded using high-resolution manometry (HRM) for the accurate evaluation of pharyngeal function is not well established. Objective The purpose of this study is to clarify the number of swallows required to obtain an accurate pharyngeal manometric profile of a person. Methods Fort
Int. Arch. Otorhinolaryngol.. Publicado em: 2021-01
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4. Videofluoroscopic analysis of different volumes of liquid bolus swallowing in healthy individuals: comparison between height and sex
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 volunteer
Clinics. Publicado em: 2017-11
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5. Bond Graph modeling of the human esophagus and analysis considering the interference in the fullness of an individual by reducing mechanical esophageal flow
INTRODUCTION: This paper shows a proposal for the mathematical modeling of the human esophagus using Bond Graph formalism and the interference in the satiation of an individual by way of an Esophageal Flow Controller (EFC). Therefore, it was evaluated that there is a significant change in fall time that affects the process of human satiety when the diameter
Rev. Bras. Eng. Bioméd.. Publicado em: 2013-09
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6. Estudo histológico da matriz extracelular do músculo cricofaríngeo em cadáveres de diferentes idades / Histological study of extracellular matrix of cricopharyngeus muscle in different ages
O músculo cricofaríngeo desempenha um importante papel na deglutição. Acredita-se que seu comportamento elástico seja dependente não apenas do componente muscular, mas também do tecido conectivo intramuscular. O objetivo desse estudo foi analisar a presença e a distribuição do colágeno total, colágenos tipo I e III, fibras elásticas, fibronectin
Publicado em: 2009
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7. Esophageal striated muscle contractions in patients with Chagas' disease and idiopathic achalasia
Chagas' disease causes degeneration and reduction of the number of intrinsic neurons of the esophageal myenteric plexus, with consequent absent or partial lower esophageal sphincter relaxation and loss of peristalsis in the esophageal body. The impairment of esophageal motility is seen mainly in the distal smooth muscle region. There is no study about esopha
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-06
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8. Upper esophageal sphincter pressure in patients with Chagas' disease and primary achalasia
The most important component of the upper esophageal sphincter (UES) is the cricopharyngeal muscle. During the measurement of sphincter pressure the catheter passed through the sphincter affects the pressure value. In Chagas' disease and primary achalasia there is an esophageal myenteric plexus denervation which may affect UES pressure. We measured the UES p
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-05
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9. Estudo eletromanometrico do esfincter esofagico superior e corpo do esofago apos distensão intraluminar em normais e chagasicos
The fisiologic studies and analysis of upper esophageal sphincter (UES) have progressed slowly during the last years. Perhaps, this can be explained by its complex working mecanism that determines difficulties in performing these studies. It is known that UES constitutes a barrier to prevent reflux of esophageal contents to the tracheobrcnchial tree, however
Publicado em: 1989
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10. Sleeve recording of upper esophageal sphincter resting pressures during cricopharyngeal myotomy.
OBJECTIVE: The manometric effects of a 6-cm cricopharyngeal myotomy are recorded while the operation is being performed from cervical esophagus to the cricopharyngeus and then to the hypopharynx. SUMMARY BACKGROUND DATA: Cricopharyngeal myotomy is used in the treatment of oropharyngeal dysphagia of different causes. The operation decreases the resting pressu
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11. Manometry of the Normal Upper Esophageal Sphincter and its Alterations in Laryngectomy
Rapid pull-through pressure profiles of the normal human upper esophageal sphincter (UES) were simultaneously studied with a conventional three-orifice Honeywell solid-state probe, an eight lumen radially perfused (RP) probe, and a circumferentially sensitive (CS) probe designed to measure UES pressure (UESP) without regard to probe orientation. Pressure cur
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12. Lower Esophageal Sphincter Relaxation: Studies on the Neurogenic Inhibitory Mechanism
The purpose of this study was to determine the physiological mechanism of lower esophageal sphincter (LES) relaxation. Circular muscle of the esophagus, LES, and stomach were evaluated for their inhibitory response to electrical stimulation during a maintained tonic contraction produced by a superfusion of acetylcholine and physostigmine. Only the circular m