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Esophagic impedance

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https://www.readbyqxmd.com/read/28212050/volume-controlled-ventilation-does-not-prevent-injurious-inflation-during-spontaneous-effort
#1
Takeshi Yoshida, Susumu Nakahashi, Maria Aparecida Miyuki Nakamura, Yukiko Koyama, Rollin Roldan, Vinicius Torsani, Roberta R De Santis, Susimeire Gomes, Akinori Uchiyama, Marcelo B P Amato, Brian P Kavanagh, Yuji Fujino
RATIONALE: Spontaneous breathing during mechanical ventilation increases transpulmonary pressure and tidal volume, and worsens lung injury. Intuitively, controlling tidal volume and transpulmonary pressure might limit injury from added spontaneous effort. OBJECTIVES: To test the hypothesis that during spontaneous effort in injured lungs, tidal volume and transpulmonary pressure limitation by volume-controlled ventilation results in less injurious patterns of inflation...
February 17, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28191707/mechanisms-underlying-reflux-symptoms-and-dysphagia-in-patients-with-joint-hypermobility-syndrome-with-and-without-postural-tachycardia-syndrome
#2
A Fikree, Q Aziz, D Sifrim
BACKGROUND: The joint hypermobility syndrome (JHS) is a common non-inflammatory connective tissue disorder which frequently co-exists with postural tachycardia syndrome (PoTS), a form of orthostatic intolerance. Gastrointestinal symptoms and dysmotility have been reported in PoTS. Dysphagia and reflux are common symptoms in JHS, yet no studies have examined the physiological mechanism for these, subdivided by PoTS status. METHODS: Thirty patients (28 female, ages: 18-62) with JHS and symptoms of reflux (n=28) ± dysphagia (n=25), underwent high-resolution manometry and 24 hour pH-impedance monitoring after questionnaire-based symptom assessment...
February 12, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28163259/effects-of-age-on-esophageal-motility-use-of-high-resolution-esophageal-impedance-manometry
#3
Young Kwang Shim, Nayoung Kim, Yo Han Park, Jong-Chan Lee, Jihee Sung, Yoon Jin Choi, Hyuk Yoon, Cheol Min Shin, Young Soo Park, Dong Ho Lee
Background/Aims: Disturbances of esophageal motility have been reported to be more frequent in aged population. However, the physiology of disturbances in esophageal motility during aging is unclear. The aim of this study was to evaluate the effects of age on the esophageal motility using high-resolution esophageal impedance manometry (HRIM). Methods: Esophageal motor function of 268 subjects were measured using HRIM in 3 age groups, < 40 years (n = 32), 40-65 years (n = 185), and > 65 years (n = 62)...
February 5, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28161707/pathogenesis-of-double-dose-proton-pump-inhibitor-resistant-non-erosive-reflux-disease-and-mechanism-of-reflux-symptoms-and-gastric-acid-secretion-suppressive-effect-in-the-presence-or-absence-of-helicobacter-pylori-infection
#4
Noriyuki Kawami, Nana Takenouchi, Mariko Umezawa, Shintaro Hoshino, Yuriko Hanada, Yoshimasa Hoshikawa, Hirohito Sano, Yoshio Hoshihara, Tsutomu Nomura, Eiji Uchida, Katsuhiko Iwakiri
BACKGROUND: Various mechanisms have been suggested to be responsible for contributing to the occurrence of proton pump inhibitor (PPI)-resistant non-erosive reflux disease (NERD). The aims of this study were to clarify the pathogenesis of PPI-resistant NERD. METHODS: Fifty-three patients with NERD, who had persistent reflux symptoms despite taking double-dose PPI, were included in this study. After excluding eosinophilic esophagitis (EoE) and primary esophageal motility disorder, esophageal impedance-pH monitoring was carried out...
February 4, 2017: Digestion
https://www.readbyqxmd.com/read/28151867/an-analysis-of-342-patients-with-refractory-gastroesophageal-reflux-disease-symptoms-using-questionnaires-high-resolution-manometry-and-impedance-ph-monitoring
#5
Fei Wang, Ping Li, Guo-Zhong Ji, Lin Miao, Zhining Fan, Sihong You, Xueqin Pan, Xia Chen
Symptoms of refractory gastroesophageal reflux disease (GERD) are commonly encountered in clinical practice. The aim of this study was to analyze the data obtained from questionnaires, high-resolution manometry (HRM), and ambulatory impedance-pH monitoring in patients with persisting GERD symptoms and to explore the possible underlying causes for this clinical presentation. After completing the questionnaires, the selected patients underwent endoscopy, HRM, and ambulatory impedance-pH monitoring. Based on the results of these investigations, we divided the patients into 4 groups: reflux esophagitis (RE), hypersensitive esophagus (HE), functional heartburn (FH), and nonerosive gastroesophageal reflux disease (NERD)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28150011/-relationship-between-functional-endoscopy-and-impedance-ph-measurement-german-version
#6
F Michel, T Stroh, R Fritsche, P Ahrens
Classic gastroenterological diagnostic tools are proving increasingly insufficient for analyzing the complex causal relationship between extra-esophageal symptoms and presumed pathological reflux activity. Some new methodological approaches, such as functional endoscopy (videopanendoscopy, VPE), are considered to be helpful. However, there are currently no data objectively verifying the usefulness of this method. In a pilot study, a good correlation between the reflux symptom index (RSI) and endoscopic findings was shown...
February 1, 2017: HNO
https://www.readbyqxmd.com/read/28144844/surveillance-in-patients-with-esophageal-atresia-tracheoesophageal-fistula
#7
REVIEW
Arunjot Singh, William Middlesworth, Julie Khlevner
PURPOSE OF REVIEW: Esophageal atresia/tracheoesophageal fistula (EA/TEF) is a congenital aerodigestive anomaly with high survival rates after surgical repair. Care should now be focused on prevention of long-term complications using appropriate surveillance techniques. RECENT FINDINGS: The incidence of gastroesophageal reflux disease (GERD) is high in patients with EA/TEF. Consequences of untreated GERD include esophagitis, strictures, and Barrett esophagus. Subjective symptoms are an unreliable indicator of presence or severity of GERD, and therefore, diagnostic testing is needed to assess esophageal heath and monitor the effectiveness of anti-reflux treatment...
January 2017: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/28133879/normal-values-of-esophageal-pressure-responses-to-a-rapid-drink-challenge-test-in-healthy-subjects-results-of-a-multicenter-study
#8
I Marin, D Cisternas, L Abrao, E Lemme, C Bilder, A Ditaranto, R Coello, A Hani, A M Leguizamo, A Meixueiro, J Remes-Troche, M A Zavala, A Ruiz de León, J Perez de la Serna, M A Valdovinos, J Serra
BACKGROUND: Multiple water swallow is increasingly used as a complementary challenge test in patients undergoing high-resolution manometry (HRM). Our aim was to establish the range of normal pressure responses during the rapid drink challenge test in a large population of healthy subjects. METHODS: Pressure responses to a rapid drink challenge test (100 or 200 mL of water) were prospectively analyzed in 105 healthy subjects studied in nine different hospitals from different countries...
January 29, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28133854/waist-to-hip-ratio-is-a-better-predictor-of-esophageal-acid-exposure-than-body-mass-index
#9
C Ringhofer, J Lenglinger, M Riegler, I Kristo, A Kainz, S Schoppmann
BACKGROUND: Obesity and gastroesophageal reflux disease (GERD) are major health problems showing an inconstant relationship in the literature. Therefore, anthropometric parameters which are predictive and can simply be assessed at first patient presentation may lead to a better patient selection for ambulatory reflux monitoring. We aimed to examine the association of body mass index (BMI) and waist to hip ratio (WHR) with gastroesophageal reflux activity during 24 hour-pH-impedance monitoring...
January 29, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28110513/effect-of-methylnaltrexone-and-naloxone-on-esophageal-motor-function-in-man
#10
E Scarpellini, A Pauwels, R Vos, N Rommel, J Tack
BACKGROUND: Endogenous opioids (EO) acting on μ-opiod receptors in central and enteric nervous system (ENS) control gastrointestinal motility but it is still unclear whether EO in ENS may control esophageal function in man, thus we will study the effects of methylnaltrexone (MNTX), a peripherally selective, and naloxone (NA), a non-selective μ-opiod receptor antagonist, on esophageal motility in healthy subjects. METHODS: Fifteen HV (6 M; 34.1 ± 0.6 years; BMI: 22...
January 22, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28078818/objectively-diagnosing-rumination-syndrome-in-children-using-esophageal-ph-impedance-and-manometry
#11
M M J Singendonk, J M Oors, A J Bredenoord, T I Omari, R J van der Pol, M J Smits, M A Benninga, M P van Wijk
BACKGROUND: Rumination syndrome is characterized by recurrent regurgitation of recently ingested food into the mouth. Differentiation with other diagnoses and gastroesophageal reflux disease (GERD) in particular, is difficult. Recently, objective pH-impedance (pH-MII) and manometry criteria were proposed for adults. The aim of this study was to determine diagnostic ambulatory pH-MII and manometry criteria for rumination syndrome in children. METHODS: Clinical data and 24-hour pH-MII and manometry recordings of children with a clinical suspicion of rumination syndrome were reviewed...
January 12, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28068730/impaired-bolus-clearance-in-combined-high-resolution-esophageal-manometry-and-impedance-measurement-helps-to-differentiate-between-esophagogastric-junction-outflow-obstruction-and-achalasia
#12
Eugen Zizer, Thomas Seufferlein, Mark Martin Hänle
Introduction and aims High-resolution esophageal manometry (HRM) has improved the diagnostic work-up of esophageal motility disorders. Simultaneous evaluation of bolus clearance delivers useful information about the function of tubular esophagus. We assessed bolus clearance in a combined HRM-impedance examination for esophagogastric junction outflow obstruction (EGJOO) in comparison to achalasia patients. The collected data were assessed in a retrospective analysis. Patients and methods After gastroscopy excluded a mechanical esophageal or gastric obstruction, 142 consecutive patients underwent combined HRM-impedance examination...
February 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28061013/esophagogastric-junction-contractile-integral-and-morphology-two-high-resolution-manometry-metrics-of-the-anti-reflux-barrier
#13
Hyoju Ham, Y U Kyung Cho, Han Hee Lee, Seung Bae Yoon, Chul-Hyun Lim, Jin Su Kim, Jae Myung Park, Myung-Gyu Choi
AIMS: We evaluated associations of esophagogastric junction (EGJ) metrics as an anti-reflux barrier with impedance-pH, endoscopic esophagitis, and lower esophageal sphincter (LES) metrics. METHODS: We reviewed high resolution manometry data from consecutive patients with GERD symptoms who underwent impedance-pH and endoscopy, and asymptomatic volunteers. The EGJ contractile integral (CI) was calculated as the mean contractile integral/second during three respiratory cycles...
January 6, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28049863/the-effect-of-acute-stress-on-esophageal-motility-and-gastroesophageal-reflux-in-healthy-humans
#14
Hong Sub Lee, Chung Kyun Noh, Kwang Jae Lee
Background/Aims: Little research has been done to evaluate the effect of stress in exacerbating the symptoms associated with gastroesophageal reflux (GER). We aimed to investigate the effect of acute stress on esophageal motility and GER parameters in healthy volunteers. Methods: A total of 10 (M:F = 8:2, median age 34 years-old) healthy volunteers without any recurrent gastrointestinal symptoms participated in this study. They underwent esophageal high-resolution manometry with 10 wet swallows (Experiment I) and esophageal impedance-pH monitoring (Experiment II) in the basal period and in the stress period...
January 30, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28045635/association-between-laryngeal-pepsin-levels-and-the-presence-of-vocal-fold-polyps
#15
Lu Wang, Jia-Jie Tan, Ting Wu, Rui Zhang, Jia-Nuan Wu, Fang-Fang Zeng, You-Li Liu, Xiao-Yan Han, Yan-Fei Li, Xiang-Ping Li
Objective To determine whether pepsin, the main component of refluxed gastric contents, is significantly associated with vocal fold polyps and to evaluate the diagnostic value of pepsin in vocal fold polyps' tissues. Study Design Cross-sectional study. Setting Nanfang Hospital of Southern Medical University. Subjects and Methods The study included 32 patients with vocal fold polyps and 16 healthy controls between 2011 and 2012. Reflux symptom index and reflux finding score assessments, 24-hour combined multichannel intraluminal impedance and pH monitoring, and biopsy of the vocal fold polyp tissues or posterior laryngeal mucosa (healthy controls) for immunohistochemical pepsin staining were performed...
January 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28044052/the-relationship-of-the-post-reflux-swallow-induced-peristaltic-wave-index-and-esophageal-baseline-impedance-with-gastroesophageal-reflux-disease-symptoms
#16
Young Kyu Cho, Joon Seong Lee, Tae Hee Lee, Su Jin Hong, Sang Joon Park, Seong Ran Jeon, Hyun Gun Kim, Jin-Oh Kim
Background/Aims: The post-reflux swallow-induced peristaltic wave (PSPW) index and esophageal baseline impedance (BI) are novel impedance parameters used to evaluate esophageal chemical clearance and mucosal integrity. However, their relationship with reflux symptoms is not known. We aimed to evaluate the correlations of the PSPW index and esophageal BI with gastroesophageal reflux disease (GERD) symptoms. Methods: We performed a retrospective review of multichannel intraluminal impedance and pH (MII-pH) tracings in patients with suspected GERD...
January 2, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28028956/assessment-of-clinical-symptoms-and-multichannel-intraluminal-impedance-and-ph-monitoring-in-children-after-thoracoscopic-repair-of-esophageal-atresia-and-distal-tracheoesophageal-fistula
#17
Barbara M Iwańczak, Agnieszka Kosmowska-Miśków, Anna Kofla-Dłubacz, Mateusz Palczewski, Michał Grabiński, Katarzyna Pawłowska, Krzysztof Matusiewicz, Dariusz Patkowski
BACKGROUND: Motility disturbances of the esophagus and gastroesophageal reflux disease (GERD) are observed frequently in children after repair of congenital esophageal atresia with distal tracheoesophageal fistula (EA/TEF). Recently, in many pediatric surgical centers, thoracoscopic repair was introduced, which theoretically would change the postoperative course. OBJECTIVES: The goal of the study was to assess physical development, disease symptoms, and GERD symptom frequency in children who underwent thoracoscopic surgery of congenital EA/TEF...
September 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28002887/pediatric-rumination-subtypes-a-study-using-high-resolution-esophageal-manometry-with-impedance
#18
R Rosen, L Rodriguez, S Nurko
BACKGROUND: The differential diagnosis of intractable reflux in children includes rumination syndrome, but confirming the diagnosis using antroduodenal manometry is invasive, is costly, and requires anesthesia. High-resolution esophageal manometry with impedance (HRM-MII) overcomes these limitations, and the goal of this study is to validate the use of HRM-MII as a diagnostic tool for rumination and to describe the subtypes of pediatric rumination. METHODS: We reviewed the HRM-MII tracings of 21 children presenting with symptoms of intractable reflux in whom rumination was being considered...
December 21, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27997805/physiologic-effects-of-high-flow-nasal-cannula-in-acute-hypoxemic-respiratory-failure
#19
Tommaso Mauri, Cecilia Turrini, Nilde Eronia, Giacomo Grasselli, Carlo Alberto Volta, Giacomo Bellani, Antonio Pesenti
RATIONALE: High-flow nasal cannula (HFNC) improves the clinical outcomes of non-intubated acute hypoxemic respiratory failure (AHRF) patients. OBJECTIVES: To assess the effects of HFNC on gas exchange, inspiratory effort, minute ventilation, end-expiratory lung volume, dynamic compliance and ventilation homogeneity in AHRF patients. METHODS: This was a prospective randomized cross-over study in non-intubated AHRF patients with PaO2/setFiO2 ≤300 mmHg admitted to the Intensive Care Unit...
December 20, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27984348/low-impedance-baseline-values-predict-severe-esophagitis
#20
Judith Cohen Sabban, Gabriela Donato Bertoldi, Federico Ussher, Silvia Christiansen, Carlos Lifschitz, Marina Orsi
OBJETIVES: To determine if esophageal baseline impedance (BI) values in children could be predictive of esophagitis. MATERIAL & METHODS: Multichannel intraluminal Impedance (MII) tracings of children 3 to 17 yrs of age suspected of having gastroesophageal reflux (GER) and esophagitis, who had also undergone upper endoscopy with multiple esophageal biopsies, were reviewed. Patients with eosinophilic esophagitis were excluded. Esophagitis was assessed by macroscopic and microscopic parameters...
December 15, 2016: Journal of Pediatric Gastroenterology and Nutrition
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