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https://www.readbyqxmd.com/read/28542377/structural-changes-in-the-copd-lung-and-related-heterogeneity
#1
Dana Copot, Robin De Keyser, Eric Derom, Clara Ionescu
This paper proposes a mathematical framework for understanding how the structural changes in the COPD lung reflect in model parameters. The core of the analysis is a correlation between the heterogeneity in the lung as COPD degree changes (GOLD II, III and IV) and the nonlinearity index evaluated using the forced oscillation technique. A low frequency evaluation of respiratory impedance models and nonlinearity degree is performed since changes in tissue mechanics are related to viscoelastic properties. Simulation analysis of our model indicates a good correlation to expected changes in heterogeneity and nonlinear effects...
2017: PloS One
https://www.readbyqxmd.com/read/28541913/virtual-spirometry-and-activity-monitoring-using-multichannel-electrical-impedance-plethysmographs-in-ambulatory-settings
#2
Hassan Aqeel Khan, Amit Gore, Jeffrey Ashe, Shantanu Chakrabartty
Continuous monitoring of respiratory patterns and physical activity levels can be useful for remote health management of patients with conditions such as heart disease and chronic obstructive pulmonary disease. In a clinical setting, spirometers serve as the gold standard for monitoring respiratory patterns such as breathing rate and changes in lung volume. However, direct measurements using a spirometer requires placement of a sensor in the patient's airway and is thus infeasible for continuous monitoring in nonclinical, ambulatory settings...
May 23, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28532454/proteomic-profiling-of-peripheral-blood-neutrophils-identifies-two-inflammatory-phenotypes-in-stable-copd-patients
#3
Adèle Lo Tam Loi, Susan Hoonhorst, Corneli van Aalst, Jeroen Langereis, Vera Kamp, Simone Sluis-Eising, Nick Ten Hacken, Jan-Willem Lammers, Leo Koenderman
BACKGROUND: COPD is a heterogeneous chronic inflammatory disease of the airways and it is well accepted that the GOLD classification does not fully represent the complex clinical manifestations of COPD and this classification therefore is not well suited for phenotyping of individual patients with COPD. Besides the chronic inflammation in the lung compartment, there is also a systemic inflammation present in COPD patients. This systemic inflammation is associated with elevated levels of cytokines in the peripheral blood, but the precise composition is unknown...
May 22, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28523329/respiratory-bronchiolitis-associated-interstitial-lung-disease-an-unexpected-form-of-idiopathic-interstitial-pneumonia-in-a-young-male
#4
Claudia Lucia Toma, Elena Danteş, Diana Gabriela Leonte, Ariadna Petronela Fildan
Cigarette smoking is the most frequently encountered risk factor for chronic obstructive pulmonary disease and lung cancer. The latest American Thoracic Society÷European Respiratory Society classification of idiopathic interstitial pneumonia includes two entities related to smoking habits: respiratory bronchiolitis-associated interstitial lung disease and desquamative interstitial pneumonia. The new approach to diagnosis is to combine pathological pattern with clinical and radiological data. Lung biopsy is no longer considered the "gold standard" for diagnosis, but as a part of the diagnosis, which shall be set only after the pulmonologist, radiologist and pathologist reviewed all clinical, imaging and pathological aspects...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28522771/how-to-determine-an-impaired-health-status-in-copd-results-from-a-population-based-study
#5
D E Smid, M A Spruit, D J H Deeg, M Huisman, J Poppelaars, E F M Wouters, F M E Franssen
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is associated with a significantly impaired health status and lost work productivity across all degrees of airflow limitation. The current study investigated whether an impaired health status is better represented by the recommended COPD Assessment Test (CAT) cut-point of 10 points, or the 95th percentile of the CAT score in a non-COPD population. Additionally, the impact of COPD on health status in a Dutch population, after stratification for work status, was measured...
May 2017: Netherlands Journal of Medicine
https://www.readbyqxmd.com/read/28507582/decreased-activity-of-butyrylcholinesterase-in-blood-plasma-of-patients-with-chronic-obstructive-pulmonary-disease
#6
Paulina Sicinska, Bozena Bukowska, Aneta Pajak, Aneta Koceva-Chyla, Tadeusz Pietras, Piotr Nizinkowski, Paweł Gorski, Maria Koter-Michalak
INTRODUCTION: Butyrylcholinesterase (BChE) is involved in the metabolism of endogenous lipids and xenobiotics, such as esters of carboxylic or phosphoric acids. Butyrylcholinesterase activity is associated with both inflammation and oxidative stress. Changes in the activity of this enzyme have been observed in various diseases such as liver cirrhosis, diabetes, neurodegenerative disease and others. MATERIAL AND METHODS: The study involved 30 patients with chronic obstructive pulmonary disease (COPD) and 18 healthy subjects...
April 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28506850/neutrophil-extracellular-traps-are-associated-with-disease-severity-and-microbiota-diversity-in-chronic-obstructive-pulmonary-disease
#7
Alison J Dicker, Megan L Crichton, Eleanor G Pumphrey, Andrew J Cassidy, Guillermo Suarez-Cuartin, Oriol Sibila, Elizabeth Furrie, Christopher J Fong, Wasyla Ibrahim, Gill Brady, Gisli G Einarsson, J Stuart Elborn, Stuart Schembri, Sara E Marshall, Colin Na Palmer, James D Chalmers
BACKGROUND: Neutrophil extracellular traps (NETs) have been observed in the airway in COPD, but their clinical and pathophysiological implications have not been defined. OBJECTIVE: To determine if NETs are associated with disease severity in COPD, and how they are associated with microbiota composition and airway neutrophil function. METHODS: NET protein complexes (DNA-Elastase and Histone-Elastase complexes), cell free DNA and neutrophil biomarkers were quantified in soluble sputum and serum from COPD patients during periods of disease stability and during exacerbations, and compared to clinical measures of disease severity and sputum microbiome...
May 12, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28505167/relationship-of-hyperlipidemia-to-comorbidities-and-lung-function-in-copd-results-of-the-cosyconet-cohort
#8
Kathrin Kahnert, Tanja Lucke, Rudolf M Huber, Jürgen Behr, Frank Biertz, Anja Vogt, Henrik Watz, Peter Alter, Sebastian Fähndrich, Robert Bals, Rolf Holle, Stefan Karrasch, Sandra Söhler, Margarethe Wacker, Joachim H Ficker, Klaus G Parhofer, Claus Vogelmeier, Rudolf A Jörres
Although hyperlipidemia is common in COPD, its relationship to comorbidities, risk factors and lung function in COPD has not been studied in detail. Using the baseline data of the COSYCONET cohort we addressed this question. Data from 1746 COPD patients (GOLD stage 1-4; mean age 64.6 y, mean FEV1%pred 57%) were evaluated, focusing on the comorbidities hyperlipidemia, diabetes and cardiovascular complex (CVC; including arterial hypertension, cardiac failure, ischemic heart disease). Risk factors comprised age, gender, BMI, and packyears of smoking...
2017: PloS One
https://www.readbyqxmd.com/read/28494181/characterization-of-asthma-chronic-obstructive-pulmonary-disease-overlap-syndrome-a-qualitative-analysis
#9
Claudie Rodrigue, Marie-France Beauchesne, Valérie Mallette, Catherine Lemière, Pierre Larivée, Lucie Blais
Approximately 15-20% of patients with chronic obstructive pulmonary disease (COPD) also display characteristics of asthma. In May 2014, the asthma-COPD overlap syndrome (ACOS) was briefly addressed in the Global Initiative for Asthma (GINA) and Global Initiative for Chronic Obstructive Lung Disease (GOLD) strategy documents. We evaluated how pulmonologists diagnose and treat ACOS and how they assess its control. Pulmonologists from two university healthcare centers, having ≥ 1 year experience, treating patients with asthma, COPD, or ACOS, were invited to participate in focus groups...
May 11, 2017: COPD
https://www.readbyqxmd.com/read/28490871/home-noninvasive-positive-pressure-ventilation-with-built-in-software-in-stable-hypercapnic-copd-a-short-term-prospective-multicenter-randomized-controlled-trial
#10
Luqian Zhou, Xiaoying Li, Lili Guan, Jianhua Chen, Bingpeng Guo, Weiliang Wu, Yating Huo, Ziqing Zhou, Zhenyu Liang, Yuqi Zhou, Jie Tan, Xin Chen, Yuanlin Song, Rongchang Chen
BACKGROUND: The benefits of noninvasive positive pressure ventilation (NPPV) in patients with hypercapnic COPD are controversial. It is presumed that methodology and appropriate use of NIV ventilator might be crucial for the outcomes. With the new built-in software, the performance of NIV can be monitored at home, which can guarantee the compliance and appropriate use. This study investigated effects of home use of NIV in hypercapnia in COPD patients using the NIV ventilator with built-in software for monitoring...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28490870/pre-and-post-bronchodilator-airway-obstruction-are-associated-with-similar-clinical-characteristics-but-different-prognosis-report-from-a-population-based-study
#11
Sami Sawalha, Linnea Hedman, Eva Rönmark, Bo Lundbäck, Anne Lindberg
INTRODUCTION: According to guidelines, the diagnosis of COPD should be confirmed by post-bronchodilator (post-BD) airway obstruction on spirometry; however, in clinical practice, this is not always performed. The aim of this population-based study was to compare clinical characteristics and prognosis, assessed as mortality, between subjects with airway obstruction divided into pre- but not post-BD obstruction, post-BD airway obstruction (COPD), and subjects without airway obstruction...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28483402/doxycycline-for-outpatient-treated-acute-exacerbations-of-copd-a-randomised-double-blind-placebo-controlled-trial
#12
Patricia van Velzen, Gerben Ter Riet, Paul Bresser, Jeroen J Baars, Bob T J van den Berg, Jan W K van den Berg, Paul Brinkman, Jennece W F Dagelet, Johannes M A Daniels, Dewi R G L Groeneveld-Tjiong, René E Jonkers, Coen van Kan, Frans H Krouwels, Karin Pool, Arjan Rudolphus, Peter J Sterk, Jan M Prins
BACKGROUND: Antibiotics do not reduce mortality or short-term treatment non-response in patients receiving treatment for acute exacerbations of COPD in an outpatient setting. However, the long-term effects of antibiotics are unknown. The aim of this study was to investigate if the antibiotic doxycycline added to the oral corticosteroid prednisolone prolongs time to next exacerbation in patients with COPD receiving treatment for an exacerbation in the outpatient setting. METHODS: In this randomised double-blind placebo-controlled trial, we recruited a cohort of patients with COPD from outpatient clinics of nine teaching hospitals and three primary care centres in the Netherlands...
May 5, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28460826/pulmonary-function-after-lung-tumor-stereotactic-ablative-radiotherapy-depends-on-regional-ventilation-within-irradiated-lung
#13
Michael S Binkley, Martin T King, Joseph B Shrager, Karl Bush, Aadel A Chaudhuri, Rita Popat, Michael F Gensheimer, Peter G Maxim, H Henry Guo, Maximilian Diehn, Viswam S Nair, Billy W Loo
PURPOSE: To determine if regional ventilation within irradiated lung volume predicts change in pulmonary function test (PFT) measurements after stereotactic ablative radiotherapy (SABR) of lung tumors. METHODS: We retrospectively identified 27 patients treated from 2007 to 2014 at our institution who received: (1) SABR without prior thoracic radiation; (2) pre-treatment 4-dimensional computed tomography (4-D CT) imaging; (3) pre- and post-SABR PFTs <15months from treatment...
May 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28458534/home-monitoring-of-breathing-rate-in-people-with-chronic-obstructive-pulmonary-disease-observational-study-of-feasibility-acceptability-and-change-after-exacerbation
#14
Noah Rubio, Richard A Parker, Ellen M Drost, Hilary Pinnock, Christopher J Weir, Janet Hanley, Leandro C Mantoani, William MacNee, Brian McKinstry, Roberto A Rabinovich
Telehealth programs to promote early identification and timely self-management of acute exacerbations of chronic obstructive pulmonary diseases (AECOPDs) have yielded disappointing results, in part, because parameters monitored (symptoms, pulse oximetry, and spirometry) are weak predictors of exacerbations. PURPOSE: Breathing rate (BR) rises during AECOPD and may be a promising predictor. Devices suitable for home use to measure BR have recently become available, but their accuracy, acceptability, and ability to detect changes in people with COPD is not known...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28458527/self-reported-daily-walking-time-in-copd-relationship-with-relevant-clinical-and-functional-characteristics
#15
Maria A Ramon, Cristina Esquinas, Miriam Barrecheguren, Eulogio Pleguezuelos, Jesús Molina, José A Quintano, Miguel Roman-Rodríguez, Karlos Naberan, Carl Llor, Carlos Roncero, Marc Miravitlles
BACKGROUND: Quantifying physical activity in chronic obstructive pulmonary disease (COPD) is important as physical inactivity is related to poor health outcomes. This study analyzed the relationship between patients' self-reported daily walking time and relevant characteristics related to COPD severity. METHODS: Pooled analysis was performed on data from four observational studies on which daily walking time was gathered from a personal interview. Patients were classified as physically inactive if walking time was <30 min/day...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28449709/case-method-in-copd-education-for-primary-care-physicians-study-protocol-for-a-cluster-randomised-controlled-trial
#16
Hanna Sandelowsky, Ingvar Krakau, Sonja Modin, Björn Ställberg, Anna Nager
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a common cause of morbidity and mortality worldwide. It is often undiagnosed and insufficiently managed. Effective forms of continuing medical education (CME) for primary care physicians (PCPs) are necessary to ensure the implementation of guidelines in clinical practice and, thus, improve patients' health. METHODS: In this study, we will measure the effects of CME by Case Method and compare them against those of traditional lectures and no CME at all through an unblinded, cluster randomised controlled trial (CRCT)...
April 27, 2017: Trials
https://www.readbyqxmd.com/read/28435245/long-term-effects-of-beta-blocker-use-on-lung-function-in-japanese-patients-with-chronic-obstructive-pulmonary-disease
#17
Naohiro Oda, Nobuaki Miyahara, Hirohisa Ichikawa, Yasushi Tanimoto, Kazuhiro Kajimoto, Makoto Sakugawa, Haruyuki Kawai, Akihiko Taniguchi, Daisuke Morichika, Mitsune Tanimoto, Arihiko Kanehiro, Katsuyuki Kiura
BACKGROUND: Some recent studies have suggested that beta-blocker use in patients with chronic obstructive pulmonary disease (COPD) is associated with a reduction in the frequency of acute exacerbations. However, the long-term effects of beta-blocker use on lung function of COPD patients have hardly been evaluated. PATIENTS AND METHODS: We retrospectively reviewed 31 Japanese COPD patients taking beta-blockers for >1 year and 72 patients not taking them. The association between beta-blocker use and the annual change in forced expiratory volume in 1 second (FEV1) was assessed...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28423189/computed-tomography-quantification-of-tracheal-abnormalities-in-copd-and-their-influence-on-airflow-limitation
#18
Leticia Gallardo Estrella, Esther Pompe, Jan-Martin Kuhnigk, David A Lynch, Surya P Bhatt, Bram van Ginneken, Eva Marjolein van Rikxoort
PURPOSE: To present a method to automatically quantify tracheal morphology changes during breathing and investigate its contribution to airflow impairment when adding CT measures of emphysema, airway wall thickness, air trapping and ventilation. METHODS: Because tracheal abnormalities often occur localized, a method is presented that automatically determines the most abnormal trachea section based on automatically computed sagittal and coronal lengths. In this most abnormal section, trachea morphology is encoded using four equiangular rays from the center of the trachea and the normalized lengths of these rays are used as features in a classification scheme...
April 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28417609/action-plans-and-coping-strategies-in-elderly-copd-patients-influence-the-result-of-pulmonary-rehabilitation-an-observational-study
#19
Patrizia Russo, Giulia Prinzi, Aliaksei Kisialou, Vittorio Cardaci, Emanuele Stirpe, Vittoria Conti, Massimo Fini, Stefano Bonassi
BACKGROUND: COPD management needs a comprehensive assessment of clinical features (symptoms severity, co-morbidities) together with life-style, behavioural, socio-economic and multi-omics parameters. Among the other issues, psycho-cognitive assessment plays a critical role. Coping strategies are used to manage psychological stress. AIM: To evaluate the association between coping strategies and outcome of Pulmonary Rehabilitation (PR). DESIGN: Observational study...
April 14, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28416015/costs-and-health-related-quality-of-life-in-alpha-1-antitrypsin-deficient-copd-patients
#20
Florian M Karl, Rolf Holle, Robert Bals, Timm Greulich, Rudolf A Jörres, Annika Karch, Armin Koch, Stefan Karrasch, Reiner Leidl, Holger Schulz, Claus Vogelmeier, Margarethe E Wacker
BACKGROUND: Alpha-1-Antitrypsin Deficiency (AATD) is an economically unexplored genetic disease. METHODS: Direct and indirect costs (based on self-reported information on healthcare utilization) and health-related quality of life (HRQL, as assessed by SGRQ, CAT, and EQ-5D-3 L) were compared between 131 AATD patients (106 with, 25 without augmentation therapy (AT)) and 2,049 COPD patients without AATD participating in the COSYCONET COPD cohort. The medication costs of AT were excluded from all analyses to reveal differences associated with morbidity profiles...
April 17, 2017: Respiratory Research
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