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Esophageal pressure

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https://www.readbyqxmd.com/read/29352698/gastric-varices-bleed-at-lower-portosystemic-pressure-gradients-than-esophageal-varices
#1
Joseph D Morrison, Nasya Mendoza-Elias, Andrew J Lipnik, R Peter Lokken, James T Bui, Charles E Ray, Ron C Gaba
PURPOSE: To quantify and compare portosystemic pressure gradients (PSGs) between bleeding esophageal varices (EV) and gastric varices (GV). MATERIALS AND METHODS: In a single-center, retrospective study, 149 patients with variceal bleeding (90 men, 59 women, mean age 52 y) with EV (n = 69; 46%) or GV (n = 80; 54%) were selected from 320 consecutive patients who underwent successful transjugular intrahepatic portosystemic shunt (TIPS) creation from 1998 to 2016...
January 15, 2018: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29349482/-esophageal-diverticula-excluding-cricopharyngeal-diverticula
#2
C A Gutschow, H Schmidt
Diverticula of the middle and lower third of the esophagus are commonly associated with esophageal motility disorders. The increase of intraluminal pressure leads to an outpouching of the mucosal and submucosal layers through the esophageal muscle coat. These pouches are also called false diverticula, because they only consist of the mucosal and submucosal esophageal layers. In contrast, the more rarely encountered true diverticula that retain the complete esophageal wall are generally associated with periesophageal granulomatous lymph node disease...
January 18, 2018: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/29346225/validating-lung-models-using-the-asl-5000-breathing-simulator
#3
Amanda Dexter, Neil McNinch, Destiny Kaznoch, Teresa A Volsko
OBJECTIVE: This study sought to validate pediatric models with normal and altered pulmonary mechanics. METHODS: PubMed and CINAHL databases were searched for studies directly measuring pulmonary mechanics of healthy infants and children, infants with severe bronchopulmonary dysplasia and neuromuscular disease. The ASL 5000 was used to construct models using tidal volume (VT), inspiratory time (TI), respiratory rate, resistance, compliance, and esophageal pressure gleaned from literature...
January 17, 2018: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/29344808/minimally-invasive-esophagectomy-with-thoracic-duct-resection-post-neoadjuvant-chemoradiotherapy-for-carcinoma-esophagus-impact-on-lymph-node-yield-and-hemodynamic-parameters
#4
Santosh Anand, Raja Kalayarasan, Sandip Chandrasekar, Senthil Gnanasekaran, Biju Pottakkat
BACKGROUND: Neoadjuvant therapy followed by surgery is the current recommended treatment for locally advanced esophageal carcinoma. Thoracic duct (TD) resection was indicated for radical mediastinal lymphadenectomy. However, TD resection can cause hemodynamic disturbances. The presence of metastasis in TD has not been previously studied. METHODS: Twenty-two patients who underwent minimally invasive esophagectomy with D2 lymphadenectomy after neoadjuvant chemoradiotherapy for esophageal squamous cell carcinoma were analyzed...
January 18, 2018: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/29342262/preliminary-study-of-1940-nm-thulium-laser-usage-in-peroral-endoscopic-myotomy-for-achalasia
#5
J Liu, Y Jiao, Y Niu, L Yu, M Ji, S Zhang
Esophageal achalasia is a type of motility disorder characterized by incomplete relaxation of lower esophageal sphincter (LES) and absence of esophageal peristalsis. Peroral endoscopic myotomy (POEM) is a new treatment option for achalasia that is less invasive, more effective, and safe as compared to surgery. High-frequency electrotome is commonly used in POEM, but takes longer time to make the tunnel in the esophagus and causes many complications. The thulium laser decreases the risk of bleeding and perforation in endoscopy but has not been reported in digestive diseases, especially in POEM...
January 9, 2018: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29323931/esophageal-manometry-and-regional-transpulmonary-pressure-in-lung-injury
#6
Takeshi Yoshida, Marcelo B P Amato, Domenico Luca Grieco, Lu Chen, Cristhiano A S Lima, Rollin Roldan, Caio C A Morais, Susimeire Gomes, Eduardo L V Costa, Paulo F G Cardoso, Emmanuel Charbonney, Jean-Christophe M Richard, Laurent Brochard, Brian P Kavanagh
RATIONALE: Esophageal manometry is the clinically available method to estimate pleural pressure, thus enabling calculation of the transpulmonary pressure (PL). However, many concerns make uncertain in which lung region esophageal manometry reflects local PL. OBJECTIVES: To determine the accuracy of esophageal pressure (Pes) and in which regions esophageal manometry reflects Ppl and PL; to assess whether lung stress in non-dependent regions can be estimated at end-inspiration from PL...
January 11, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29323536/high-positive-end-expiratory-pressure-renders-spontaneous-effort-non-injurious
#7
Caio C A Morais, Yukiko Koyama, Takeshi Yoshida, Glauco M Plens, Susimeire Gomes, Cristhiano L A S Lima, Ozyres P Ramos, Sérgio M Pereira, Naomasa Kawaguchi, Hirofumi Yamamoto, Akinori Uchiyama, João B Borges, Marcos F Vidal Melo, Mauro R Tucci, Marcelo B P Amato, Brian P Kavanagh, Eduardo L V Costa, Yuji Fujino
RATIONALE: In ARDS, atelectatic 'solid-like' lung tissue impairs transmission of negative 'swings' in pleural pressure (Ppl) resulting from diaphragmatic contraction. The localization of more negative Ppl proportionally increases dependent lung stretch by drawing gas either from other lung regions, e.g., non-dependent lung (Pendelluft) or from the ventilator. Lowering of the level of spontaneous effort and/or converting solid-like to fluid-like lung might render spontaneous effort non-injurious...
January 11, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29310115/serotonin-transporter-gene-slc6a4-polymorphism-may-be-associated-with-chinese-globus-pharyngeus-and-its-antidepressant-effects
#8
Yao Liu, Lin Jia, Shu-Man Jiang, Dong-Yun Chen, Jiang-Shun Song, Jian Xu
BACKGROUND: Although globus pharyngeus is not rare in clinical practice, little is known about its associated gene polymorphism. We investigated the association between the SLC6A4 polymorphism and globus pharyngeus and its response to treatment with antidepressants. METHODS: A total of 84 patients were diagnosed with globus pharyngeus according to Rome III, and 160 healthy controls were genotyped for the SLC6A4 polymorphism using polymerase chain reaction amplification and agarose gel electrophoresis...
January 8, 2018: Digestion
https://www.readbyqxmd.com/read/29305934/efficacy-of-laparoscopic-nissen-fundoplication-vs-transoral-incisionless-fundoplication-or-proton-pump-inhibitors-in-patients-with-gastroesophageal-reflux-disease-a-systematic-review-and-network-meta-analysis
#9
Joel Richter, Ambuj Kumar, Seth Lipka, Branko Miladinovic, Vic Velanovich
BACKGROUND & AIMS: The effects of transoral incisionless fundoplication (TIF) and laparoscopic Nissen fundoplication (LNF) have been compared with those of proton pump inhibitors (PPIs) or a sham procedure in patients with gastroesophageal reflux disease (GERD), but there has been no direct comparison of TIF vs LNF. We performed a systematic review and network meta-analysis of randomized controlled trials to compare the relative efficacies of TIF vs LNF in patients with GERD. METHODS: We searched publication databases and conference abstracts through May 10, 2017 for randomized controlled trials that compared the efficacy of TIF or LNF with that of a sham procedure or PPIs in patients with GERD...
January 3, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29303604/study-on-effects-of-electrical-stimulation-on-rabbit-esophageal-body-motility-in-vivo
#10
Lili Zhang, Wei Zhao, Chunshan Zhao, Hong Jin, Bin Wang, Bangmao Wang
Electric stimulation (ES) could induce contraction of intestinal smooth muscle. The aim of this study was to analyze the effects of ES on esophageal motility and the underlying mechanism in vivo. Twenty-eight rabbits were equipped with a pair of subserosa electrodes (connected to an electrical stimulator) in the lower segment of the esophagus. The ES signal consisted of bipolar rectangular pulse trains, lasting for 3.0s, with different amplitudes (1mA, 3mA, 5mA and 10mA), and frequencies (10Hz, 20Hz and 50Hz)...
January 5, 2018: Physiological Research
https://www.readbyqxmd.com/read/29288717/ventilator-derived-dynamic-respiratory-system-compliance-comparison-with-static-compliance-in-children
#11
Anu K Kaskinen, Turkka Kirjavainen, Paula Rautiainen, Laura Martelius, Sture Andersson, Olli M Pitkänen
Measurement of dynamic lung compliance during breathing requires measurement of esophageal pressure, whereas static respiratory system compliance (Crs) method requires several airway occlusions. Despite their precision these compliance methods are cumbersome and not suitable for evaluation of pulmonary system in intensive care. The current ventilators display dynamic Crs, which, however, is seldom utilized in clinical practice. We studied the feasibility of ventilator-derived dynamic Crs measurement in pulmonary evaluation after congenital cardiac surgery in children...
December 27, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29277089/-rumination
#12
REVIEW
Moo In Park
Rumination syndrome is one of the functional gastroduodenal disorders. Effortless and repetitive regurgitation of recently ingested food from the stomach to the oral cavity followed by rechewing and reswallowing or spitting are the characteristic clinical features. This disorder is believed to be uncommon, but many patients with this disorder are overlooked by their physicians. Rumination might be caused by a reversal of the gastric contents through the esophagogastric junction, which is initiated by an increase in intragastric pressure...
December 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/29249583/bronchial-blocker-versus-left-double-lumen-endotracheal-tube-for-one-lung-ventilation-in-right-video-assisted-thoracoscopic-surgery
#13
Yao Lu, Wei Dai, Zhijun Zong, Yimin Xiao, Di Wu, Xuesheng Liu, Gordon Tin Chun Wong
OBJECTIVE: The aim of this study was to compare the quality of lung deflation of a left-sided double-lumen endotracheal tube (DLT) with a bronchial blocker (BB) for one-lung ventilation in video-assisted thoracic surgery (VATS). DESIGN: A prospective, randomized, clinical study. SETTING: A university-affiliated teaching hospital. PARTICIPANTS: Forty-five adult patients undergoing esophageal tumor surgery using VATS with right lung deflation...
July 27, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29235207/discriminating-movements-of-liquid-and-gas-in-the-rabbit-colon-with-impedance-manometry
#14
R Mohd Rosli, R E Leibbrandt, L Wiklendt, M Costa, D A Wattchow, N J Spencer, S J Brookes, T I Omari, P G Dinning
BACKGROUND: High-resolution impedance manometry is a technique that is well established in esophageal motility studies for relating motor patterns to bolus flow. The use of this technique in the colon has not been established. METHODS: In isolated segments of rabbit proximal colon, we recorded motor patterns and the movement of liquid or gas boluses with a high-resolution impedance manometry catheter. These detected movements were compared to video recorded changes in gut diameter...
December 13, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29234939/the-role-of-preoperative-high-resolution-manometry-in-predicting-dysphagia-after-laparoscopic-nissen-fundoplication
#15
Sonam Kapadia, Turner Osler, Allen Lee, Edward Borrazzo
BACKGROUND: Laparoscopic fundoplication is an accepted surgical management of refractory gastro-esophageal reflux disease (GERD). The use of high resolution esophageal manometry (HRM) in preoperative evaluation is often applied to determine the degree of fundoplication to optimize reflux control while minimizing adverse sequela of postoperative dysphagia. OBJECTIVE: Assess the role of preoperative HRM in predicting surgical outcomes, specifically risk assessment of postoperative dysphagia and quality of life, among patients receiving laparoscopic Nissen fundoplication for GERD with immediate postoperative (< 4 weeks clinic), short-term (3-month clinic), and long-term (34 ± 10...
December 12, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29232174/analysis-of-reported-balloon-malfunctions-and-proposed-rescue-strategy-for-malfunction-during-airway-dilation
#16
E Brandon Strong, Derrick R Randall, Daniel J Cates, Peter C Belafsky
Objective The rate of balloon dilator failure is unknown, and a rescue strategy for device malfunction has not been established. The purposes of this investigation were to determine the approximate number of balloon failures in the gastrointestinal tract and airway, evaluate the parameters required to rupture balloon dilators, and develop a rescue strategy to efficiently reestablish airway patency. Study Design Retrospective cohort and basic medical research. Setting Academic tertiary care medical center. Subjects and Methods The Manufacturer and User Facility Device Experience database was queried for adverse events associated with tracheal and esophageal dilators between January 1, 2014, and January 1, 2017...
December 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29230939/normative-values-and-factors-affecting-water-perfused-esophageal-high-resolution-impedance-manometry-for-a-chinese-population
#17
P-H Tseng, R K M Wong, J-F Wu, C-C Chen, C-H Tu, Y-C Lee, H-C Lee, H-P Wang, M-S Wu
BACKGROUND: Combined esophageal high-resolution impedance manometry (HRIM) measures multiple pressures and bolus transit simultaneously, facilitating detailed assessment of esophageal motility. Currently, normative values for water-perfused HRIM systems for Chinese populations are lacking. METHODS: Healthy volunteers were enrolled for comprehensive anthropometric measures, blood biochemistry tests, and an HRIM study using 22 water-perfused pressure sensors and 12 impedance channels...
December 12, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29228393/quantifying-the-arousal-threshold-using-polysomnography-in-obstructive-sleep-apnea
#18
Scott A Sands, Philip I Terrill, Bradley A Edwards, Luigi Taranto Montemurro, Ali Azarbarzin, Melania Marques, Camila M de Melo, Stephen H Loring, James P Butler, David White, Andrew Wellman
Objectives: Precision medicine for obstructive sleep apnea (OSA) requires non-invasive estimates of each patient's pathophysiological "traits". Here we provide the first, automated technique to quantify the respiratory arousal threshold-defined as the level of ventilatory drive triggering arousal from sleep-using diagnostic polysomnographic signals in patients with OSA. Methods: Ventilatory drive preceding clinically-scored arousals was estimated from polysomnographic studies by fitting a respiratory control model (Terrill P et al...
November 9, 2017: Sleep
https://www.readbyqxmd.com/read/29218673/results-of-endoscopic-vacuum-assisted-closure-device-for-treatment-of-upper-gi-leaks
#19
Marc Bludau, Hans F Fuchs, Till Herbold, Martin K H Maus, Hakan Alakus, Felix Popp, Jessica M Leers, Christiane J Bruns, Arnulf H Hölscher, Wolfgang Schröder, Seung-Hun Chon
BACKGROUND: Esophageal perforations and postoperative leakage of esophagogastrostomies are considered to be life-threatening conditions due to the potential development of mediastinitis and consecutive sepsis. Vacuum-assisted closure (VAC) techniques, a well-established treatment method for superficial infected wounds, are based on a negative pressure applied to the wound via a vacuum-sealed sponge. Endoluminal VAC (E-VAC) therapy as a treatment for GI leakages in the rectum was introduced in 2008...
December 7, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29215957/peroral-endoscopic-myotomy-with-endoflip-and-double-endoscope-novel-techniques-for-achalasia-in-pediatric-population
#20
Fanny Yeung, Ian Y H Wong, Patrick H Y Chung, Kenneth K Y Wong, Simon Y K Law, Paul K H Tam
BACKGROUND: Experience of peroral endoscopic myotomy (POEM) for treatment of achalasia in pediatric population is limited with varying techniques in different centers. The accurate extent of submucosal tunneling into the gastric cardia and the adequacy of myotomy are the important determining factors to success of POEM. A majority of studies in pediatric population have described using submucosal dye injection for assessing the adequacy of myotomy, however, this is a rather crude and inaccurate method...
December 7, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
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