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esophageal balloon catheter and esophageal pressure

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https://www.readbyqxmd.com/read/28828360/transpulmonary-pressure-importance-and-limits
#1
REVIEW
Domenico Luca Grieco, Lu Chen, Laurent Brochard
Transpulmonary pressure (PL) is computed as the difference between airway pressure and pleural pressure and separates the pressure delivered to the lung from the one acting on chest wall and abdomen. Pleural pressure is measured as esophageal pressure (PES) through dedicated catheters provided with esophageal balloons. We discuss the role of PL in assessing the effects of mechanical ventilation in patients with acute respiratory distress syndrome (ARDS). In the supine position, directly measured PL represents the pressure acting on the alveoli and airways...
July 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28770541/optimal-esophageal-balloon-volume-for-accurate-estimation-of-pleural-pressure-at-end-expiration-and-end-inspiration-an-in-vitro-bench-experiment
#2
Yan-Lin Yang, Xuan He, Xiu-Mei Sun, Han Chen, Zhong-Hua Shi, Ming Xu, Guang-Qiang Chen, Jian-Xin Zhou
BACKGROUND: Esophageal pressure, used as a surrogate for pleural pressure, is commonly measured by air-filled balloon, and the accuracy of measurement depends on the proper balloon volume. It has been found that larger filling volume is required at higher surrounding pressure. In the present study, we determined the balloon pressure-volume relationship in a bench model simulating the pleural cavity during controlled ventilation. The aim was to confirm whether an optimal balloon volume range existed that could provide accurate measurement at both end-expiration and end-inspiration...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28572979/complex-effects-of-high-flow-nasal-cannula-therapy-on-hemodynamics-in-the-pediatric-patient-after-cardiac-surgery
#3
EDITORIAL
Yu Inata, Muneyuki Takeuchi
BACKGROUND: The high-flow nasal cannula (HFNC) system has been widely used for children in various clinical settings. However, the physiological and clinical impact of HFNC therapy on the pediatric patient with respiratory distress after cardiac surgery has not been thoroughly investigated. MAIN BODY OF THE ABSTRACT: It seems logical to use HFNC as a primary therapy for post-extubation respiratory failure after congenital heart surgery, in which low cardiac output syndrome and upper airway obstruction are commonly encountered; the HFNC therapy alleviates the work of breathing and large negative swings of intrathoracic pressure, which in turn helps to decrease the systemic ventricular afterload...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28441053/evaluation-of-oxygen-administration-with-a-high-flow-nasal-cannula-to-clinically-normal-dogs
#4
Jennifer L Daly, Christine L Guenther, Jamie M Haggerty, Iain Keir
OBJECTIVE To evaluate the safety and efficacy of oxygen administration by use of a high-flow nasal cannula (HFNC) in sedated clinically normal dogs. ANIMALS 6 healthy adult dogs undergoing routine dental prophylaxis. PROCEDURES Dogs were sedated with butorphanol tartrate and dexmedetomidine. An esophageal balloon catheter was inserted into the esophagus, a double-pronged nasal cannula was inserted into the nares, and a catheter was inserted into the dorsal pedal artery. Dogs were positioned in right lateral recumbency...
May 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28375475/consistency-and-effect-of-body-position-change-on-measurement-of-upper-and-lower-esophageal-sphincter-geometry-using-impedance-planimetry-in-a-canine-model
#5
K A Pitt, P D Mayhew, L Barter, R Pollard, P H Kass, S L Marks
The EndoFLIP (Endolumenal Functional Lumen Imaging Probe, Crospon Inc, Galway, Ireland) device uses the technique of impedance planimetry to evaluate dimensions and distensibility of the upper and lower esophageal sphincter. The null hypotheses for this study were that EndoFLIP variables would be stable between anesthestic episodes and would not be affected by body position when evaluating the upper and lower esophageal sphincters in healthy dogs. During each of three consecutive general anesthesia episodes administered to eight healthy adult research colony dogs with a standardized protocol, the EndoFLIP catheter was positioned to measure cross-sectional area, intrabag pressure, upper and lower esophageal sphincter length at two different balloon fill volumes (30 and 40 mL) and two body positions (lateral and dorsal recumbency)...
April 1, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/28226350/-value-of-endoscopy-application-in-the-management-of-complications-after-radical-gastrectomy-for-gastric-cancer
#6
Yiqun Zhang, Pinghong Zhou
Endoscopy plays an important role in the diagnosis and treatment of postoperative complications of gastric cancer. Endoscopic intervention can avoid the second operation and has attracted wide attention. Early gastric anastomotic bleeding after gastrectomy is the most common. With the development of technology, emergency endoscopy and endoscopic hemostasis provide a new treatment approach. According to the specific circumstances, endoscopists can choose metal clamp to stop bleeding, electrocoagulation hemostasis, local injection of epinephrine or sclerotherapy agents, and spraying specific hemostatic agents...
February 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27729399/stability-and-agreement-of-a-microtransducer-and-an-air-filled-balloon-esophageal-catheter-in-the-monitoring-of-esophageal-pressure
#7
Renan Maloni Augusto, André Luis Pereira Albuquerque, Thomas Jaeger, Carlos Roberto Ribeiro de Carvalho, Pedro Caruso
BACKGROUND: The use of esophageal catheters with microtransducer promises advantages over traditional catheters with air-filled balloons. However, performance comparisons between these 2 types of catheters are scarce and incomplete. METHODS: A catheter with a 9.5-cm air-filled balloon at the distal tip and a catheter with a microtransducer mounted within a flexible silicone rubber were tested in vitro and in vivo. In vitro, the response times of both catheters were compared, and the drift of the baseline pressure of the microtransducer catheter was evaluated over a 6-h period...
February 2017: Respiratory Care
https://www.readbyqxmd.com/read/27636673/measurement-of-pleural-pressure-swings-with-a-fluid-filled-esophageal-catheter-vs-pulmonary-artery-occlusion-pressure
#8
S Verscheure, P B Massion, S Gottfried, P Goldberg, L Samy, P Damas, S Magder
PURPOSE: Pleural pressure measured with esophageal balloon catheters (Peso) can guide ventilator management and help with the interpretation of hemodynamic measurements, but these catheters are not readily available or easy to use. We tested the utility of an inexpensive, fluid-filled esophageal catheter (Peso) by comparing respiratory-induced changes in pulmonary artery occlusion (Ppao), central venous (CVP), and Peso pressures. METHODS: We studied 30 patients undergoing elective cardiac surgery who had pulmonary artery and esophageal catheters in place...
February 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/27577052/effect-of-high-frequency-oscillatory-ventilation-on-esophageal-and-transpulmonary-pressures-in-moderate-to-severe-acute-respiratory-distress-syndrome
#9
Christophe Guervilly, Jean-Marie Forel, Sami Hraiech, Antoine Roch, Daniel Talmor, Laurent Papazian
BACKGROUND: High-frequency oscillatory ventilation (HFOV) has not been shown to be beneficial in the management of moderate-to-severe acute respiratory distress syndrome (ARDS). There is uncertainty about the actual pressure applied into the lung during HFOV. We therefore performed a study to compare the transpulmonary pressure (P L) during conventional mechanical ventilation (CMV) and different levels of mean airway pressure (mPaw) during HFOV. METHODS: This is a prospective randomized crossover study in a university teaching hospital...
December 2016: Annals of Intensive Care
https://www.readbyqxmd.com/read/27003998/comparison-of-hepatic-venous-pressure-gradient-and-endoscopic-grading-of-esophageal-varices
#10
COMPARATIVE STUDY
EunJi Lee, Yong Jae Kim, Dong Erk Goo, Seung Boo Yang, Hyun-Joo Kim, Jae Young Jang, Soung Won Jeong
AIM: To determine the correlation between the hepatic venous pressure gradient and the endoscopic grade of esophageal varices. METHODS: From September 2009 to March 2013, a total of 176 measurements of hepatic venous pressure gradient (HVPG) were done in 146 patients. Each transjugular HVPG was measured twice, first using an end whole catheter (EH-HVPG), and then using a balloon catheter (B-HVPG). The HVPG was compared with the endoscopic grade of esophageal varices (according to the general rules for recording endoscopic findings of esophagogastric varices), which was recorded within a month of the measurement of HVPG...
March 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/26868503/the-occlusion-tests-and-end-expiratory-esophageal-pressure-measurements-and-comparison-in-controlled-and-assisted-ventilation
#11
Davide Chiumello, Dario Consonni, Silvia Coppola, Sara Froio, Francesco Crimella, Andrea Colombo
BACKGROUND: Esophageal pressure is used as a reliable surrogate of the pleural pressure. It is conventionally measured by an esophageal balloon placed in the lower part of the esophagus. To validate the correct position of the balloon, a positive pressure occlusion test by compressing the thorax during an end-expiratory pause or a Baydur test obtained by occluding the airway during an inspiratory effort is used. An acceptable catheter position is defined when the ratio between the changes in esophageal and airway pressure (∆Pes/∆Paw) is close to unity...
December 2016: Annals of Intensive Care
https://www.readbyqxmd.com/read/26462086/pressurized-intraluminal-aerosol-chemotherapy-with-dbait-in-the-distal-esophagus-of-swine
#12
Nadja Khalili-Harbi, Nirmitha Herath, Wiebke Solass, Urs Giger-Pabst, Marie Dutreix, Marc Andre Reymond
BACKGROUND AND STUDY AIMS: A novel therapeutic concept, pressurized intraluminal aerosol chemotherapy (PILAC), and a corresponding device for distributing drugs to the mucosa and submucosa of the distal esophagus are presented. MATERIALS AND METHODS: The endoscopic device that was designed consisted of (i) a double-balloon catheter, similar to a Sengstaken-Blakemore tube; (ii) a carbon dioxide (CO2) line, used to create a gaseous, pressurized environment; and (iii) a micropump, used to generate a therapeutic aerosol...
February 2016: Endoscopy
https://www.readbyqxmd.com/read/26077619/response-characteristics-of-esophageal-balloon-catheters-handmade-using-latex-and-nonlatex-materials
#13
Troy J Cross, Sophie Lalande, Robert E Hyatt, Bruce D Johnson
The measurement of esophageal pressure allows for the calculation of several important and clinically useful parameters of respiratory mechanics. Esophageal pressure is often measured with balloon-tipped catheters. These catheters may be handmade from natural latex condoms and polyethylene tubing. Given the potential of natural latex to cause allergic reaction, it is important to determine whether esophageal catheter balloons can be fabricated, by hand, using nonlatex condoms as construction materials. To determine the static and dynamic response characteristics of esophageal balloon catheters handmade from latex and nonlatex materials, six esophageal catheter balloons were constructed from each of the following condom materials: natural latex, synthetic polyisoprene, and polyurethane (18 total)...
June 2015: Physiological Reports
https://www.readbyqxmd.com/read/25634481/esophageal-pressure-measurements-under-different-conditions-of-intrathoracic-pressure-an-in-vitro-study-of-second-generation-balloon-catheters
#14
F Mojoli, D Chiumello, M Pozzi, I Algieri, S Bianzina, S Luoni, C A Volta, A Braschi, L Brochard
BACKGROUND: The aim of this study was to evaluate in vitro the accuracy of second generation esophageal catheters at different surrounding pressures and filling volumes and to suggest appropriate catheter management in clinical practice. METHODS: Six different esophageal catheters were placed in an experimental chamber at four chamber pressures (0, 10, 20 and 30 cmH2O) and at filling volumes ranging from 0 to 10 mL. The working volume was defined as the volume range between the maximum (Vmax) and minimum (Vmin) volumes achieving acceptable accuracy (defined by a balloon transmural pressure ± 1 cmH2O)...
August 2015: Minerva Anestesiologica
https://www.readbyqxmd.com/read/25301894/differences-in-respiratory-muscle-activity-during-cycling-and-walking-do-not-influence-dyspnea-perception-in-obese-patients-with-copd
#15
Casey E Ciavaglia, Jordan A Guenette, Daniel Langer, Katherine A Webb, J Alberto Neder, Denis E O'Donnell
In patients with combined obesity and chronic obstructive pulmonary disease (COPD), dyspnea intensity at matched work rates during weight-supported cycling and weight-bearing walking is similar, despite consistent metabolic differences between test modalities. The present study examined the influence of differences in activity of the diaphragm and abdominal muscles during cycling and walking on intensity and quality of dyspnea at matched ventilation in obese patients with COPD. We compared respiratory muscle activity patterns and dyspnea ratings during incremental cycle and treadmill exercise tests, where work rate was matched, in 12 obese (body mass index 36...
December 1, 2014: Journal of Applied Physiology
https://www.readbyqxmd.com/read/25247308/liquid-and-air-filled-catheters-without-balloon-as-an-alternative-to-the-air-filled-balloon-catheter-for-measurement-of-esophageal-pressure
#16
Alessandro Beda, Andreas Güldner, Alysson R Carvalho, Walter Araujo Zin, Nadja C Carvalho, Robert Huhle, Antonio Giannella-Neto, Thea Koch, Marcelo Gama de Abreu
BACKGROUND: Measuring esophageal pressure (Pes) using an air-filled balloon catheter (BC) is the common approach to estimate pleural pressure and related parameters. However, Pes is not routinely measured in mechanically ventilated patients, partly due to technical and practical limitations and difficulties. This study aimed at comparing the conventional BC with two alternative methods for Pes measurement, liquid-filled and air-filled catheters without balloon (LFC and AFC), during mechanical ventilation with and without spontaneous breathing activity...
2014: PloS One
https://www.readbyqxmd.com/read/25212533/heart-lung-interactions-during-neurally-adjusted-ventilatory-assist
#17
COMPARATIVE STUDY
David Berger, Stefan Bloechlinger, Jukka Takala, Christer Sinderby, Lukas Brander
INTRODUCTION: Assist in unison to the patient's inspiratory neural effort and feedback-controlled limitation of lung distension with neurally adjusted ventilatory assist (NAVA) may reduce the negative effects of mechanical ventilation on right ventricular function. METHODS: Heart-lung interaction was evaluated in 10 intubated patients with impaired cardiac function using esophageal balloons, pulmonary artery catheters and echocardiography. Adequate NAVA level identified by a titration procedure to breathing pattern (NAVAal), 50% NAVAal, and 200% NAVAal and adequate pressure support (PSVal, defined clinically), 50% PSVal, and 150% PSVal were implemented at constant positive end-expiratory pressure for 20 minutes each...
September 12, 2014: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/25093961/rabbit-model-of-chest-wall-rigidity-induced-by-fentanyl-and-the-effects-of-apomorphine
#18
João Henrique Neves Soares, Robert J Brosnan, Andrea Smith, Philipp D Mayhew
A rabbit model for fentanyl-induced chest wall rigidity and the effect of apomorphine was evaluated. Eleven New Zealand adult rabbits were anesthetized and mechanically ventilated. An esophageal balloon catheter was used to estimate pleural pressure (P(pl)). Chest wall compliance (C(cw)) at baseline was calculated during pentobarbital anesthesia. A loading dose of 0.1 mg kg(-1) of fentanyl followed by infusion of 0.01 mg kg(-1) min(-1) was started in all animals, and C(cw) reassessed. In the rabbits that developed decreased C(cw), apomorphine 0...
October 1, 2014: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/24892946/alteration-in-the-lower-limit-of-autoregulation-with-elevations-in-cephalic-venous-pressure
#19
Derek Nusbaum, Jonathan Clark, Kenneth Brady, Kathleen Kibler, Jeffrey Sutton, Ronald Blaine Easley
OBJECTIVES: Recent studies suggest that elevated intracranial pressure (ICP), created by hydrocephalus, can alter the lower limit of cerebrovascular autoregulation (LLA). Our objective in the present study was to determine if ICP elevation from cerebral venous outflow obstruction would result in comparable alterations in the LLA. METHODS: Anesthetized juvenile pigs were assigned to one of two groups: naïve ICP (n  =  15) or high ICP (>20 mmHg; n  =  20)...
December 2014: Neurological Research
https://www.readbyqxmd.com/read/24798128/management-of-stomal-varices-with-transvenous-obliteration-utilizing-sodium-tetradecyl-sulfate-foam-sclerosis
#20
Wael E A Saad, Sandra Schwaner, Allison Lippert, Saher S Sabri, Abdullah Al-Osaimi, Alan H Matsumoto, John F Angle, Stephen Caldwell
The management of parastomal varices is not established. Transjugular intrahepatic portosystemic shunt (TIPS) creation is the most commonly described treatment; however, the rebleed rate after TIPS is 21-37%. The purpose of the study is to determine the effectiveness of transvenous obliteration using sodium tetradecyl sulfate (STS) and to describe a new simplified technique in obliterating these varices. Four patients are presented who underwent transvenous obliteration using STS. One was obliterated using balloon occlusion from the systemic veins, the second was obliterated without balloon from a transhepatic antegrade approach, and the last two patients were obliterated using the direct antegrade technique...
December 2014: Cardiovascular and Interventional Radiology
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