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Ventilation in COPD

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https://www.readbyqxmd.com/read/28326310/cardiopulmonary-response-during-whole-body-vibration-training-in-patients-with-severe-copd
#1
Rainer Gloeckl, Petra Richter, Sandra Winterkamp, Michael Pfeifer, Christoph Nell, Jeffrey W Christle, Klaus Kenn
Several studies in patients with chronic obstructive pulmonary disease (COPD) have shown that whole-body vibration training (WBVT) has beneficial effects on exercise capacity. However, the acute cardiopulmonary demand during WBVT remains unknown and was therefore investigated in this study. Ten patients with severe COPD (forced expiratory volume in 1 s: 38±8% predicted) were examined on two consecutive days. On day one, symptom-limited cardiopulmonary exercise testing was performed on a cycle ergometer. The next day, six bouts of repeated squat exercises were performed in random order for one, two or three minutes either with or without WBVT while metabolic demands were simultaneously measured...
January 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28325021/evaluation-of-lung-ventilation-distribution-in-chronic-obstructive-pulmonary-disease-patients-using-the-global-inhomogeneity-index
#2
F Trenk, L Mendes, P Carvalho, R P Paiva, J Henriques, N Maglaveras, I Chouvarda, V Tsara, C A Teixeira
The global inhomogeneity (GI) index is a electrical impedance tomography (EIT) parameter that quantifies the tidal volume distribution within the lung. In this work the global inhomogeneity index was computed for twenty subjects in order to evaluate his potential use in the detection and follow up of chronic obstructive pulmonary disease (COPD) patients. EIT data of 17 subjects were acquired: 14 patients with the main diagnoses of COPD and 3 healthy subjects which served as a control group. Two or three datasets of around 30 seconds were acquired at 33 scans/s and analysed for each subject...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28318340/characteristic-plethysmographic-findings-in-a-guinea-pig-model-of-copd
#3
Edgar Ramírez-Ramírez, Armando Torres-Ramírez, Jesús Alquicira-Mireles, Abraham Cañavera-Constantino, Patricia Segura-Medina, Martha Montaño-Ramírez, Carlos Ramos-Abraham, Mario H Vargas, José Luis Arreola-Ramírez
AIM OF THE STUDY: Long-term exposure to cigarette smoke generates chronic obstructive pulmonary disease (COPD) in guinea pigs, but a comprehensive evaluation of changes in lung function, as assessed by barometric whole body plethysmography (WBP), is lacking. MATERIALS AND METHODS: Female guinea pigs were exposed to the smoke of 20 cigarettes/day, 5 days/week, during 10 weeks (COPD group, n = 8), and were compared with unexposed female guinea pigs of the same age (control group, n = 8)...
March 20, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28298398/management-of-copd-exacerbations-a%C3%A2-european-respiratory-society-american-thoracic-society-guideline
#4
Jadwiga A Wedzicha, Marc Miravitlles, John R Hurst, Peter M A Calverley, Richard K Albert, Antonio Anzueto, Gerard J Criner, Alberto Papi, Klaus F Rabe, David Rigau, Pawel Sliwinski, Thomy Tonia, Jørgen Vestbo, Kevin C Wilson, Jerry A Krishnan
This document provides clinical recommendations for treatment of chronic obstructive pulmonary disease (COPD) exacerbations.Comprehensive evidence syntheses, including meta-analyses, were performed to summarise all available evidence relevant to the Task Force's questions. The evidence was appraised using the Grading of Recommendations, Assessment, Development and Evaluation approach and the results were summarised in evidence profiles. The evidence syntheses were discussed and recommendations formulated by a multidisciplinary Task Force of COPD experts...
March 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28294159/to-find-a-better-dosimetric-parameter-in-the-predicting-of-radiation-induced-lung-toxicity-individually-ventilation-perfusion-or-ct-based
#5
Lin-Lin Xiao, Guoren Yang, Jinhu Chen, Xiaohui Wang, Qingwei Wu, Zongwei Huo, Qingxi Yu, Jinming Yu, Shuanghu Yuan
This study aimed to find a better dosimetric parameter in predicting of radiation-induced lung toxicity (RILT) in patients with non-small cell lung cancer (NSCLC) individually: ventilation(V), perfusion (Q) or computerized tomography (CT) based. V/Q single-photon emission computerized tomography (SPECT) was performed within 1 week prior to radiotherapy (RT). All V/Q imaging data was integrated into RT planning system, generating functional parameters based on V/Q SPECT. Fifty-seven NSCLC patients were enrolled in this prospective study...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28292482/cost-savings-from-reduced-hospitalizations-with-use-of-home-noninvasive-ventilation-for-copd
#6
Steven Coughlin, Fred W Peyerl, Sibyl H Munson, Aditi J Ravindranath, Teofilo L Lee-Chiong
BACKGROUND: Although evidence suggests significant clinical benefits of home noninvasive ventilation (NIV) for management of severe chronic obstructive pulmonary disease (COPD), economic analyses supporting the use of this technology are lacking. OBJECTIVES: To evaluate the economic impact of adopting home NIV, as part of a multifaceted intervention program, for severe COPD. METHODS: An economic model was developed to calculate savings associated with the use of Advanced NIV (averaged volume assured pressure support with autoexpiratory positive airway pressure; Trilogy100, Philips Respironics, Inc...
March 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28286047/effects-of-early-administration-of-acetazolamide-on-the-duration-of-mechanical-ventilation-in-patients-with-chronic-obstructive-pulmonary-disease-or-obesity-hypoventilation-syndrome-with-metabolic-alkalosis-a-randomized-trial
#7
G Rialp Cervera, J M Raurich Puigdevall, I Morán Chorro, M C Martín Delgado, G Heras la Calle, A Mas Serra, I Vallverdú Perapoch
BACKGROUND: Metabolic alkalosis (MA) inhibits respiratory drive and may delay weaning from mechanical ventilation (MV). MA is common in CO2-retainer patients that need MV. Acetazolamide (ACTZ) decreases serum bicarbonate concentration and stimulates respiratory drive. This study evaluated the effects of ACTZ on the duration of MV in patients with MA and COPD or obesity hypoventilation syndrome (OHS) intubated with acute respiratory failure. METHODS: Multicenter, randomized, controlled, double-blind study, with COPD or OHS patients with MV < 72 h and initial bicarbonate >28 mmol/L and pH > 7...
March 7, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28283771/non-invasive-ventilation-for-acute-hypercapnic-respiratory-failure-in-older-patients
#8
Fatma Çiftci, Aydın Çiledağ, Serhat Erol, Akın Kaya
BACKGROUND: This trial was conducted to carry out an age and etiology-based analysis of the clinical efficacy of non-invasive ventilation (NIV) in acute hypercapnic respiratory failure (AHRF). METHODS: This single center, prospective, cohort study included patients aged ≥65 years with chronic obstructive pulmonary disease (COPD), acute cardiogenic pulmonary edema (ACPE), community-acquired pneumonia (CAP), bronchiectasis, and kyphoscoliosis, who were treated with NIV for AHRF in the intensive care unit within a 4-year period...
March 10, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28275225/low-flow-veno-venous-extracorporeal-co2-removal-for-acute-hypercapnic-respiratory-failure
#9
Matthias P Hilty, Thomas Riva, Silvia R Cottini, Eva-Maria Kleinert, Alessandra Maggiorini, Marco Maggiorini
BACKGROUND: Ventilation with low tidal volume and airway pressure results in a survival benefit in ARDS patients. Previous research suggests that avoiding mechanical ventilation altogether may be beneficial in some cases of respiratory failure. Our hypothesis was that low flow veno-venous extracorporeal CO2 removal (ECCO2R) enables maintenance of a lung protective ventilation strategy or awake spontaneous ventilation despite severe hypercapnic respiratory failure (HRF). METHODS: Twenty patients with HRF were investigated while mechanically ventilated (n=14) or breathing spontaneously close to respiratory exhaustion (n=6)...
March 8, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28275174/physiological-and-clinical-relevance-of-exercise-ventilatory-efficiency-in-copd
#10
REVIEW
J Alberto Neder, Danilo C Berton, Flavio F Arbex, Maria Clara Alencar, Alcides Rocha, Priscila A Sperandio, Paolo Palange, Denis E O'Donnell
Exercise ventilation (V'E) relative to carbon dioxide output (V'CO2 ) is particularly relevant to patients limited by the respiratory system, e.g. those with chronic obstructive pulmonary disease (COPD). High V'E-V'CO2 (poor ventilatory efficiency) has been found to be a key physiological abnormality in symptomatic patients with largely preserved forced expiratory volume in 1 s (FEV1). Establishing an association between high V'E-V'CO2 and exertional dyspnoea in mild COPD provides evidence that exercise intolerance is not a mere consequence of detraining...
March 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28274533/validation-of-the-japanese-severe-respiratory-insufficiency-questionnaire-in-hypercapnic-patients-with-noninvasive-ventilation
#11
Toru Oga, Hiroyuki Taniguchi, Hideo Kita, Tomomasa Tsuboi, Keisuke Tomii, Morihide Ando, Eiji Kojima, Hiromi Tomioka, Yoshio Taguchi, Yusuke Kaji, Ryoji Maekura, Toru Hiraga, Naoki Sakai, Tomoki Kimura, Michiaki Mishima, Wolfram Windisch, Kazuo Chin
BACKGROUND: The Severe Respiratory Insufficiency (SRI) Questionnaire was originally developed in German to assess health-related quality of life (HRQL) and was validated as a multidimensional instrument with high psychometric properties in chronic hypercapnic respiratory failure (CHRF) patients receiving noninvasive ventilation (NIV). We aimed to investigate the intercultural adaptation of the Japanese SRI Questionnaire and whether it is a reliable and valid HRQL questionnaire to administer to those patients...
March 2017: Respiratory Investigation
https://www.readbyqxmd.com/read/28255088/oral-n-acetylcysteine-and-exercise-tolerance-in-mild-chronic-obstructive-pulmonary-disease
#12
Daniel M Hirai, Joshua H Jones, Joel T Zelt, Marianne L da Silva, Robert F Bentley, Brittany Ann Edgett, Brendon James Gurd, Michael E Tschakovsky, Denis E O'Donnell, J Alberto Neder
Heightened oxidative stress is implicated in the progressive impairment of skeletal muscle vascular and mitochondrial function in chronic obstructive pulmonary disease (COPD). Whether accumulation of reactive oxygen species contribute to exercise intolerance in the early stages of COPD is unknown. We examined the effects of oral antioxidant treatment with N-acetylcysteine (NAC) on respiratory, cardiovascular and locomotor muscle function and exercise tolerance in patients with mild COPD. Thirteen patients with forced expiratory volume in one second and forced vital capacity ratio (FEV1/FVC) < lower limit of normal (LLN) and FEV1 ≥ LLN were enrolled in a double-blind, randomized crossover study to receive NAC (1800 mg/day) or placebo for 4 days...
March 2, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28254766/a-multicentre-validation-of-the-1-min-sit-to-stand-test-in-patients-with-copd
#13
Sarah Crook, Gilbert Büsching, Konrad Schultz, Nicola Lehbert, Danijel Jelusic, Stephan Keusch, Michael Wittmann, Michael Schuler, Thomas Radtke, Martin Frey, Alexander Turk, Milo A Puhan, Anja Frei
Our aim was to comprehensively validate the 1-min sit-to-stand (STS) test in chronic obstructive pulmonary disease (COPD) patients and explore the physiological response to the test.We used data from two longitudinal studies of COPD patients who completed inpatient pulmonary rehabilitation programmes. We collected 1-min STS test, 6-min walk test (6MWT), health-related quality of life, dyspnoea and exercise cardiorespiratory data at admission and discharge. We assessed the learning effect, test-retest reliability, construct validity, responsiveness and minimal important difference of the 1-min STS test...
March 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28230230/bronchoscopic-lung-volume-reduction-procedures-for-chronic-obstructive-pulmonary-disease
#14
REVIEW
Joseph Em van Agteren, Khin Hnin, Dion Grosser, Kristin V Carson, Brian J Smith
BACKGROUND: In the recent years, a variety of bronchoscopic lung volume reduction (BLVR) procedures have emerged that may provide a treatment option to participants suffering from moderate to severe chronic obstructive pulmonary disease (COPD). OBJECTIVES: To assess the effects of BLVR on the short- and long-term health outcomes in participants with moderate to severe COPD and determine the effectiveness and cost-effectiveness of each individual technique. SEARCH METHODS: Studies were identified from the Cochrane Airways Group Specialised Register (CAGR) and by handsearching of respiratory journals and meeting abstracts...
February 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28227703/evaluation-of-lung-ventilation-distribution-in-chronic-obstructive-pulmonary-disease-patients-using-the-global-inhomogeneity-index
#15
F Trenk, L Mendes, P Carvalho, R P Paiva, J Henriques, N Maglaveras, I Chouvarda, V Tsara, C A Teixeira, F Trenk, L Mendes, P Carvalho, R P Paiva, J Henriques, N Maglaveras, I Chouvarda, V Tsara, C A Teixeira, P Carvalho, V Tsara, L Mendes, C A Teixeira, J Henriques, F Trenk, N Maglaveras, I Chouvarda, R P Paiva
The global inhomogeneity (GI) index is a electrical impedance tomography (EIT) parameter that quantifies the tidal volume distribution within the lung. In this work the global inhomogeneity index was computed for twenty subjects in order to evaluate his potential use in the detection and follow up of chronic obstructive pulmonary disease (COPD) patients. EIT data of 17 subjects were acquired: 14 patients with the main diagnoses of COPD and 3 healthy subjects which served as a control group. Two or three datasets of around 30 seconds were acquired at 33 scans/s and analysed for each subject...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225477/mechanical-efficiency-in-chronic-obstructive-pulmonary-disease
#16
Willem Gosens, Alex J Vanʼt Hul, Joost M Oomen, Matthijs K C Hesselink, Lars B Borghouts
PURPOSE: The primary aims of this study were (1) to evaluate whole-body mechanical efficiency (ME) in a large group of chronic obstructive pulmonary disease (COPD) patients with a wide range of degrees of illness and (2) to examine how ME in COPD is related to absolute work rate and indices of disease severity during exercise testing. METHODS: A total of 569 patients (301 male patients; GOLD stage I: 28, GOLD stage II: 166, GOLD stage III: 265, and GOLD stage IV: 110) with chronic obstructive pulmonary disease (COPD) were included in the data analysis...
March 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28224729/management-of-hypoxaemic-respiratory-failure-in-a-respiratory-high-dependency-unit
#17
Craig Hukins, Mimi Wong, Michelle Murphy, John Upham
BACKGROUND: There are limited data on outcomes of hypoxaemic respiratory failure (HRF), especially in non-ICU settings. AIM: To assess outcomes in HRF (without multi-system disease and not requiring early intubation) directly admitted to a Respiratory High Dependency Unit (R-HDU). METHODS: Retrospective, cohort study of HRF compared to Hypercapnic Respiratory Failure (HCRF) in a R-HDU (2007-2011). Patient characteristics (age, gender, pre-morbid status, diagnoses) and outcomes (non-invasive ventilation (NIV) use, survival, ICU admission) were assessed...
February 22, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28221172/interventional-pulmonology-in-chronic-obstructive-pulmonary-disease
#18
Daniela Gompelmann, Nilab Sarmand, Felix J F Herth
PURPOSE OF REVIEW: Chronic obstructive pulmonary disease (COPD) and emphysema are widespread diseases associated with progressive dyspnea because of airflow limitation and hyperinflation. Fundamental therapeutic strategies consist of pulmonary rehabilitation, pharmacotherapy, long-term oxygen therapy, noninvasive ventilation, and surgical therapeutic approaches. RECENT FINDINGS: In the last 14 years, endoscopic therapeutic modalities emerged as a substantial part of severe COPD and emphysema treatment...
February 17, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28210321/telemedicine-in-chronic-obstructive-pulmonary-disease
#19
Nicolino Ambrosino, Guido Vagheggini, Stefano Mazzoleni, Michele Vitacca
Telemedicine is a medical application of advanced technology to disease management. This modality may provide benefits also to patients with chronic obstructive pulmonary disease (COPD). Different devices and systems are used. The legal problems associated with telemedicine are still controversial. Economic advantages for healthcare systems, though potentially high, are still poorly investigated. A European Respiratory Society Task Force has defined indications, follow-up, equipment, facilities, legal and economic issues of tele-monitoring of COPD patients including those undergoing home mechanical ventilation...
December 2016: Breathe
https://www.readbyqxmd.com/read/28209038/-a-comparison-of-leak-compensation-in-six-acute-care-ventilators-during-non-invasive-ventilation
#20
X S Hu, Y Wang, Z T Wang, P Yan, X G Zhang, S F Zhao, F Xie, H J Gu, L X Xie
Objective: To compare the ability of leak compensation in 6 medical ventilators during non-invasive ventilation. Methods: Six medical ventilators were selected, including 3 non-invasive ventilators (V60, Flexo and Stellar150), and 3 invasive ventilators(Avea, Servo I and BellaVist). Using a lung simulator, the ability of leak compensation was evaluated during triggering and cycling in 2 respiratory mechanics conditions (high airway resistance condition and high elastance resistance condition), and each condition was performed under 2 PEEP levels (4, and 8 cmH(2)O, 1 mmHg=0...
February 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
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