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Esophagic impedance

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https://www.readbyqxmd.com/read/27920480/comparison-of-multichannel-intraluminal-impedance-ph-monitoring-and-reflux-scintigraphy-in-pediatric-patients-with-suspected-gastroesophageal-reflux
#1
Nuray Uslu Kızılkan, Murat Fani Bozkurt, Inci Nur Saltık Temizel, Hülya Demir, Aysel Yüce, Biray Caner, Hasan Özen
AIM: To evaluate the agreement of multichannel intraluminal impedance-pH monitoring (MII-pHM) and gastroesophageal reflux scintigraphy (GES) for the diagnosis of gastroesophageal reflux disease. METHODS: Seventy-five consecutive patients with suspected gastroesophageal reflux disease (GERD) underwent 24-h combined MII-pHM recording and one hour radionuclide scintigraphy during the course of the MII-pHM study. Catheters with 6 impedance channels and 1 pH sensor were placed transnasally...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27891754/patients-with-barrett-s-esophagus-are-hypersensitive-to-acid-but-hyposensitive-to-other-stimuli-compared-with-healthy-controls
#2
C Lottrup, A L Krarup, H Gregersen, P Ejstrud, A M Drewes
BACKGROUND: Esophageal hyposensitivity has been observed in Barrett's esophagus and may contribute to its pathophysiology. However, studies are few, in particular those assessing different sensory modalities. We aimed to compare esophageal sensitivity to multimodal stimulation in patients with Barrett's esophagus and in healthy controls. METHODS: Twenty-three patients with Barrett's esophagus and 12 healthy controls were examined. A multimodal probe was placed in the lower esophagus...
November 27, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27867461/transesophageal-echocardiography-and-radiation-induced-damages
#3
Marzia Cottini, Vincenzo Polizzi, Paolo Giuseppe Pino, Vitaliano Buffa, Francesco Musumeci
The long-term sequelae of mantle therapy include, especially lung and cardiac disease but also involve the vessels and the organs in the neck and thorax (such as thyroid, aorta, and esophagus). We presented the case of 66-year-old female admitted for congestive heart failure in radiation-induced heart disease. The patient had undergone to massive radiotherapy 42 years ago for Hodgkin's disease (type 1A). Transesophageal echocardiography was performed unsuccessfully with difficulty because of the rigidity and impedance of esophageal walls...
July 2016: Heart Views: the Official Journal of the Gulf Heart Association
https://www.readbyqxmd.com/read/27852360/-changes-and-implications-of-esophageal-function-in-patients-with-chronic-cough-induced-by-gastroesophageal-reflux
#4
X H Xu, L Yu, Q Chen, Y Huang, H H Sun, L S Yi, S C Xu, H J Lyu, Z M Qiu
Objective: To explore the changes in the esophageal function and their association with the therapeutic outcome in patients with gastroesophageal reflux-induced chronic cough (GERC). Methods: One hundred thirty-five patients with definite GERC consecutively referred to our respiratory clinic were recruited into the study between January 2012 and August 2015.Cough was due to acid reflux in 81 patients and non-acid reflux in 54 patients, with the favorable response to the standard antireflux therapy in 88 patients and to the intensified antireflux treatment in 47 patients...
November 12, 2016: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/27842743/assessing-respiratory-system-mechanical-function
#5
REVIEW
Ruben D Restrepo, Diana M Serrato, Rodrigo Adasme
The main goals of assessing respiratory system mechanical function are to evaluate the lung function through a variety of methods and to detect early signs of abnormalities that could affect the patient's outcomes. In ventilated patients, it has become increasingly important to recognize whether respiratory function has improved or deteriorated, whether the ventilator settings match the patient's demand, and whether the selection of ventilator parameters follows a lung-protective strategy. Ventilator graphics, esophageal pressure, intra-abdominal pressure, and electric impedance tomography are some of the best-known monitoring tools to obtain measurements and adequately evaluate the respiratory system mechanical function...
December 2016: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/27804042/esophageal-mucosal-integrity-improves-after-laparoscopic-antireflux-surgery-in-children-with-gastroesophageal-reflux-disease
#6
Femke A Mauritz, Nicolaas F Rinsma, Ernest L W van Heurn, Cornelius E J Sloots, Peter D Siersema, Roderick H J Houwen, David C van der Zee, Ad A M Masclee, José M Conchillo, Maud Y A Van Herwaarden-Lindeboom
BACKGROUND: Esophageal intraluminal baseline impedance reflects the conductivity of the esophageal mucosa and may be an instrument for in vivo evaluation of mucosal integrity in children with gastroesophageal reflux disease (GERD). Laparoscopic antireflux surgery (LARS) is a well-established treatment option for children with proton pump inhibitory (PPI) therapy resistant GERD. The effect of LARS in children on baseline impedance has not been studied in detail. The aim of this study was to evaluate the effect of LARS on baseline impedance in children with GERD...
November 1, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27784839/belching-in-irritable-bowel-syndrome-an-impedance-study
#7
Tuba Obekli, Filiz Akyuz, Umit Akyuz, Serpil Arici, Raim İliaz, Suut Gokturk, Sami Evirgen, Bilger Cavus, Cetin Karaca, Kadir Demir, Fatih Besisik, Sabahattin Kaymakoglu
Background/Aims: There are limited data about the relation between belching and irritable bowel syndrome (IBS). We aimed to evaluate belching in patients with IBS. Methods: Twenty-five patients with IBS and 12 healthy volunteers were enrolled in the study. IBS was diagnosed in accordance with the Rome III criteria. All patients were questioned about the presence of symptoms for belching, gastroesophageal reflux disease, and dyspepsia. Esophageal manometry and 24-hour pH-impedance were performed in all patients and healthy volunteers...
October 27, 2016: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/27778419/baseline-impedance-measured-during-high-resolution-esophageal-impedance-manometry-reliably-discriminates-gerd-patients
#8
K Ravi, D M Geno, M F Vela, M D Crowell, D A Katzka
BACKGROUND: Baseline impedance measured with ambulatory impedance pH monitoring (MII-pH) and a mucosal impedance catheter detects gastroesophageal reflux disease (GERD). However, these tools are limited by cost or patient tolerance. We investigated whether baseline impedance measured during high-resolution impedance manometry (HRIM) distinguishes GERD patients from controls. METHODS: Consecutive patients with clinical HRIM and MII-pH testing were identified. Gastroesophageal reflux disease was defined by esophageal pH <4 for ≥5% of both the supine and total study time, whereas controls had an esophageal pH <4 for ≤3% of the study performed off PPI...
October 24, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27769085/role-of-intraluminal-esophageal-impedance-baseline-in-the-diagnosis-of-esophagitis-in-children
#9
Miguel Couselo, Vicente Ibáñez, Javier Lluna, Juan José Vila
Introduction Low values of esophageal impedance baseline (EIB) have been related to esophagitis. The aim of this study was to evaluate the diagnostic performance of EIB for erosive esophagitis (ErE) and histological esophagitis (HiE) in children studied for gastroesophageal reflux. Material and Methods Children who underwent esophageal multichannel intraluminal impedance-pH monitoring (MII-pH) and upper-endoscopy with esophageal biopsies were studied retrospectively. EIB values were obtained by MII-pH. ErE was assessed by endoscopy following the Hetzel-Dent classification; HiE was defined by basal zone hyperplasia, papillary lengthening, or inflammatory infiltration...
October 21, 2016: European Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27738965/how-to-optimally-apply-impedance-in-the-evaluation-of-esophageal-dysmotility
#10
Amit Patel, C Prakash Gyawali
The utilization of impedance technology has enhanced our understanding and assessment of esophageal dysmotility. Esophageal high-resolution manometry (HRM) catheters incorporated with multiple impedance electrodes help assess esophageal bolus transit, and the combination is termed high-resolution impedance manometry (HRIM). Novel metrics have been developed with HRIM-including esophageal impedance integral ratio, bolus flow time, nadir impedance pressure, and impedance bolus height-that augments the assessment of esophageal bolus transit...
November 2016: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/27736035/role-of-non-acid-gastro-esophageal-reflux-in-children-with-respiratory-symptoms
#11
Letizia Zenzeri, Paolo Quitadamo, Renato Tambucci, Dario Ummarino, Antonio Poziello, Erasmo Miele, Annamaria Staiano
OBJECTIVES: Respiratory symptoms are a possible atypical clinical picture of gastro-esophageal reflux disease (GERD). However, a significant number of patients with GERD-related respiratory symptoms do not report improvement despite aggressive acid-suppressive therapy. Some of these refractory cases may be due to the recently appreciated entity of non-acid or weakly acidic reflux. The aim of our study is to assess the pH-impedance features of GER inducing airway symptoms, compared with GER inducing typical gastro-intestinal (GI) symptoms...
October 13, 2016: Pediatric Pulmonology
https://www.readbyqxmd.com/read/27708528/a-new-mechanism-of-gastroesophageal-reflux-in-hiatal-hernia-documented-by-high-resolution-impedance-manometry-a-case-report
#12
Francesco Torresan, Daniele Mandolesi, Alexandros Ioannou, Simone Nicoletti, Leonardo Henry Eusebi, Franco Bazzoli
Gastroesophageal reflux disease (GERD) is recognized to be a multifactorial disease and several mechanisms leading to reflux have been described, nevertheless its pathophysiology has not been fully clarified. Hiatus hernia is a known risk factor for GERD since it impairs the esophagogastric junction, leading to: reduction in lower esophageal sphincter pressure; increase in the frequency of the transient lower esophageal sphincter relaxation; and impairment of esophageal clearance. Last generation diagnostic techniques have improved the understanding of these mechanisms...
October 2016: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/27703389/ineffective-esophageal-motility-and-the-vagus-current-challenges-and-future-prospects
#13
Ji-Hong Chen
Ineffective esophageal motility (IEM) is characterized by low to very low amplitude propulsive contractions in the distal esophagus, hence primarily affecting the smooth muscle part of the esophagus. IEM is often found in patients with dysphagia or heartburn and is commonly associated with gastroesophageal reflux disease. IEM is assumed to be associated with ineffective bolus transport; however, this can be verified using impedance measurements or evaluation of a barium coated marshmallow swallow. Furthermore, water swallows may not assess accurately the motor capabilities of the esophagus, since contraction amplitude is strongly determined by the size and consistency of the bolus...
2016: Clinical and Experimental Gastroenterology
https://www.readbyqxmd.com/read/27692861/effect-of-severity-of-esophageal-acidification-on-sleep-vs-wake-periods-in-infants-presenting-with-brief-resolved-unexplained-events
#14
Janani Sankaran, Aslam H Qureshi, Frederick Woodley, Mark Splaingard, Sudarshan R Jadcherla
OBJECTIVES: To describe the pattern of gastroesophageal reflux (GER) events in wake and sleep states with increasing acid reflux index (ARI) in neonates and to test the hypothesis that GER-related symptoms are frequent in ARI >7% in wake state. STUDY DESIGN: Infants underwent 24-hour pH-impedance studies with 6-hour concurrent video-polysomnography studies. Data were stratified based on the 24-hour ARI (% duration that esophageal pH is <4) into ARI < 3% (normal), ARI 3 ≥ to ≤7% (intermediate), and ARI >7% (abnormal)...
September 27, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27682990/reflux-monitoring-in-children
#15
REVIEW
M M J Singendonk, M A Benninga, M P van Wijk
Recently, multichannel intraluminal impedance (MII) monitoring was added to the repertoire of tests to evaluate the (patho)physiology of gastroesophageal reflux (GER) in children. Its advantage above the sole monitoring of the esophageal pH lies in the ability of the detection of both acid and nonacid GER and to discern between liquid and gas GER. Currently, combined 24 h pH-MII monitoring is recommended for evaluation of gastro-esophageal reflux disease (GERD) and its relation to symptoms in infants and children, despite the lack of reference values in these age groups...
October 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27681220/novel-insights-into-esophageal-diagnostic-procedures
#16
Edoardo Savarino, Andrea Ottonello, Salvatore Tolone, Ottavia Bartolo, Myong Ki Baeg, Farhood Farjah, Shiko Kuribayashi, Katerina P Shetler, Christian Lottrup, Ellen Stein
The 21st century offers new advances in diagnostic procedures and protocols in the management of esophageal diseases. This review highlights the most recent advances in esophageal diagnostic technologies, including clinical applications of novel endoscopic devices, such as ultrathin endoscopy and confocal laser endomicroscopy for diagnosis and management of Barrett's esophagus; novel parameters and protocols in high-resolution esophageal manometry for the identification and better classification of motility abnormalities; innovative connections between esophageal motility disorder diagnosis and detection of gastroesophageal reflux disease (GERD); impedance-pH testing for detecting the various GERD phenotypes; performance of distensibility testing for better pathophysiological knowledge of the esophagus and other gastrointestinal abnormalities; and a modern view of positron emission tomography scanning in metastatic disease detection in the era of accountability as a model for examining other new technologies...
September 2016: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/27660053/do-jackhammer-contractions-lead-to-achalasia-a-longitudinal-study
#17
L Huang, M Pimentel, A Rezaie
BACKGROUND: Jackhammer esophagus (JE) is a rare esophageal motility disorder defined in the Chicago Classification of Esophageal Motility by presence of excessively high distal contractile integral (DCI) on high-resolution manometry (HRM), with unknown natural manometric course. We examined the development of achalasia over time in patients with JE. METHODS: Through a retrospective longitudinal design, patients with Jackhammer contractions who had more than one HRM between 2005 and 2015 were identified...
September 23, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27647522/high-resolution-impedance-manometry-parameters-enhance-the-esophageal-motility-evaluation-in-non-obstructive-dysphagia-patients-without-a-major-chicago-classification-motility-disorder
#18
D A Carlson, T Omari, Z Lin, N Rommel, K Starkey, P J Kahrilas, J Tack, J E Pandolfino
BACKGROUND: High-resolution impedance manometry (HRIM) allows evaluation of esophageal bolus retention, flow, and pressurization. We aimed to perform a collaborative analysis of HRIM metrics to evaluate patients with non-obstructive dysphagia. METHODS: Fourteen asymptomatic controls (58% female; ages 20-50) and 41 patients (63% female; ages 24-82), 18 evaluated for dysphagia and 23 for reflux (non-dysphagia patients), with esophageal motility diagnoses of normal motility or ineffective esophageal motility, were evaluated with HRIM and a global dysphagia symptom score (Brief Esophageal Dysphagia Questionnaire)...
September 20, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27646580/-current-status-of-translational-research-on-gastroesophageal-reflux-disease
#19
REVIEW
In Du Jeong, Moo In Park
The prevalence of gastroesophageal reflux disease (GERD) and the incidence of some of its complications have risen strikingly over the last few decades. With the increase in our understanding of the pathophysiology of GERD along with the development of proton pump inhibitors, the diagnostic and therapeutic approaches to GERD have changed dramatically over the past decade. However, GERD still poses a problem to many clinicians since the spectrum of the disease has evolved to encompass more challenging presentations such as refractory GERD and extra-esophageal manifestations...
September 25, 2016: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/27630010/the-impact-of-the-speed-of-food-intake-on-gastroesophageal-reflux-events-in-obese-female-patients
#20
Serhat Bor, Askin Erdogan, Berna Bayrakci, Esra Yildirim, Rukiye Vardar
Obesity increases the risk of gastroesophageal reflux disease (GERD). The majority of the reflux attacks occur postprandially. The influence of the speed of food intake on gastroesophageal reflux events is unclear in obese patients. To determine the influence of the speed of food intake on intraesophageal reflux events in obese patients with and without GERD. A total of 26 obese female patients were recruited. The patients underwent esophageal manometry to evaluate the upper limit of the lower esophageal sphincter and subsequently placement of a Multichannel intraluminal impedance-pH (MII-pH) catheter...
September 15, 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
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