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https://www.readbyqxmd.com/read/29145259/impulse-oscillometry-system-as-an-alternative-diagnostic-method-for-chronic-obstructive-pulmonary-disease
#1
Xia Wei, Zhihong Shi, Yajuan Cui, Jiuyun Mi, Zhengquan Ma, Jingting Ren, Jie Li, Shudi Xu, Youmin Guo
We aimed to compare impulse oscillation system (IOS) and traditional pulmonary function tests (PFTs) for the assessment of the severity of chronic obstructive pulmonary disease (COPD), and to assess the use of IOS parameters to identify patients who were forced expiratory volume in 1 second (FEV1)%pred < 50%.Patients with COPD (n = 215) were enrolled at the Ninth Hospital of Xi'an Affiliated Hospital of Xi'an Jiaotong University between October 2014 and September 2016. All patients were assessed by traditional PFT and IOS...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29133824/comparison-and-evaluation-of-two-different-methods-to-establish-the-cigarette-smoke-exposure-mouse-model-of-copd
#2
Jiaze Shu, Defu Li, Haiping Ouyang, Junyi Huang, Zhen Long, Zhihao Liang, Yuqin Chen, Yiguan Chen, Qiuyu Zheng, Meidan Kuang, Haiyang Tang, Jian Wang, Wenju Lu
Animal model of cigarette smoke (CS) -induced chronic obstructive pulmonary disease (COPD) is the primary testing methodology for drug therapies and studies on pathogenic mechanisms of disease. However, researchers have rarely run simultaneous or side-by-side tests of whole-body and nose-only CS exposure in building their mouse models of COPD. We compared and evaluated these two different methods of CS exposure, plus airway Lipopolysaccharides (LPS) inhalation, in building our COPD mouse model. Compared with the control group, CS exposed mice showed significant increased inspiratory resistance, functional residual capacity, right ventricular hypertrophy index, and total cell count in BALF...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29120965/exploring-the-views-of-individuals-with-chronic-obstructive-pulmonary-disease-on-the-use-of-rollators-a-qualitative-study
#3
Alanna Holz, Amanda Bennett, Amber Freethy, Nadia Rossi, Megan Tanzos, Roger Goldstein, Dina Brooks, Samantha L Harrison
PURPOSE: Although it has been well documented that the progressive exercise limitation associated with chronic obstructive pulmonary disease can be helped with an assistive device, such as a rollator, many individuals use it infrequently. This study seeks to explore the views of individuals with chronic obstructive pulmonary disease regarding the use of rollators. METHODS: A qualitative study design was used. Twelve individuals with moderate to very severe chronic obstructive pulmonary disease were recruited from an outpatient pulmonary rehabilitation program to participate in semistructured interviews...
November 8, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/29082624/emergence-of-aspergillus-fumigatus-azole-resistance-in-azole-na%C3%A3-ve-copd-patients-and-their-homes
#4
Camille Dauchy, Nathalie Bautin, Saad Nseir, Gabriel Reboux, René Wintjens, Olivier Le Rouzic, Boualem Sendid, Eric Viscogliosi, Patrice Le Pape, Maiken Cavling Arendrup, Philippe Gosset, Stéphanie Fry, Emilie Fréalle
Azole-resistant Aspergillus fumigatus (ARAF) has been reported in COPD patients, but has not been specifically assessed so far. Here, we evaluated ARAF prevalence in azole-naïve COPD patients and their homes, and assessed whether CYP51A mutations were similar in clinical and environmental reservoirs. Sixty respiratory samples from 41 COPD patients with acute exacerbation, and environmental samples from 36 of these patient's homes were prospectively collected. A. fumigatus was detected in respiratory samples from 11/41 patients (27%) and in 15/36 domiciles (42%)...
October 30, 2017: Indoor Air
https://www.readbyqxmd.com/read/29076609/effects-of-home-based-lower-limb-resistance-training-on-muscle-strength-and-functional-status-in-stable-copd-patients
#5
Yi Chen, Mei'e Niu, Xiuqin Zhang, Hongying Qian, Anwei Xie, Xiya Wang
AIMS AND OBJECTIVES: This study aimed to determine the effect of home-based lower limb resistance training (LLRT) in patients with stable COPD. BACKGROUND: Pulmonary rehabilitation (PR) in COPD patients has been substantially investigated, but the rehabilitation components differ among studies. Few works have focused on home-based LLRT. Furthermore, few studies have assessed muscle strength and functional status by isokinetic/isometric extensor muscle peak torque (PT) and five-repetition sit-to-stand test (FTSST), respectively...
October 27, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/29070498/impact-of-a-pharmacist-driven-methicillin-resistant-staphylococcus-aureus-surveillance-protocol
#6
Courtney Willis, Bryan Allen, Calvin Tucker, Kathleen Rottman, Kevin Epps
PURPOSE: Results of a study to evaluate the impact of a pharmacist-driven methicillin-resistant Staphylococcus aureus (MRSA) surveillance screening protocol are reported. METHODS: A retrospective single-center, quasi-experimental, pre-post cohort study was conducted to assess medication-use and clinical outcomes before and after implementation of a protocol allowing pharmacists to order nasal swabs and polymerase chain reaction (PCR) testing for MRSA in selected patients receiving vancomycin for pneumonia or acute exacerbation of chronic obstructive pulmonary disease (AECOPD)...
November 1, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/29065130/metabolic-syndrome-and-chronic-obstructive-pulmonary-disease-copd-the-interplay-among-smoking-insulin-resistance-and-vitamin-d
#7
Giuseppina Piazzolla, Anna Castrovilli, Vito Liotino, Maria Rosaria Vulpi, Margherita Fanelli, Antonio Mazzocca, Mafalda Candigliota, Elsa Berardi, Onofrio Resta, Carlo Sabbà, Cosimo Tortorella
BACKGROUND: A close relationship between Metabolic Syndrome (MetS) and Chronic Obstructive Pulmonary Disease (COPD) has been described, but the exact nature of this link remains unclear. Current epidemiological data refer exclusively to the MetS prevalence among patients with COPD and data about the prevalence of COPD in MetS patients are still unavailable. AIM OF THE STUDY: To analyse and compare risk factors, clinical and metabolic characteristics, as well as the main respiratory function parameters, among patients affected by MetS, COPD or both diseases...
2017: PloS One
https://www.readbyqxmd.com/read/29053575/the-impact-of-a-weight-loss-intervention-on-diet-quality-and-eating-behaviours-in-people-with-obesity-and-copd
#8
Rebecca F McLoughlin, Vanessa M McDonald, Peter G Gibson, Hayley A Scott, Michael J Hensley, Lesley MacDonald-Wicks, Lisa G Wood
There is a paucity of evidence to guide clinicians about appropriate management strategies for people with obesity and Chronic Obstructive Pulmonary Disease (COPD). We have recently published results from the first weight loss intervention in adults (>18 years) with obesity (body mass index; BMI ≥ 30 kg/m²) and COPD, using a low-calorie diet coupled with a partial meal replacement plan and resistance exercise training, which resulted in a 6.4% reduction in weight while maintaining skeletal muscle mass and improving health status...
October 20, 2017: Nutrients
https://www.readbyqxmd.com/read/29047083/altered-redox-balance-in-the-development-of-chronic-hypoxia-induced-pulmonary-hypertension
#9
Nikki L Jernigan, Thomas C Resta, Laura V Gonzalez Bosc
Normally, the pulmonary circulation is maintained in a low-pressure, low-resistance state with little resting tone. Pulmonary arteries are thin-walled and rely heavily on pulmonary arterial distension and recruitment for reducing pulmonary vascular resistance when cardiac output is elevated. Under pathophysiological conditions, however, active vasoconstriction and vascular remodeling lead to enhanced pulmonary vascular resistance and subsequent pulmonary hypertension (PH). Chronic hypoxia is a critical pathological factor associated with the development of PH resulting from airway obstruction (COPD, sleep apnea), diffusion impairment (interstitial lung disease), developmental lung abnormalities, or high altitude exposure (World Health Organization [WHO]; Group III)...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29045740/adding-vancomycin-to-perioperative-prophylaxis-decreases-deep-sternal-wound-infections-in-high-risk-cardiac-surgery-patients
#10
Sylvia Reineke, Thierry P Carrel, Verena Eigenmann, Brigitta Gahl, Urs Fuehrer, Christian Seidl, David Reineke, Eva Roost, Magi Bächli, Jonas Marschall, Lars Englberger
OBJECTIVES: Perioperative prophylaxis with cephalosporins reduces sternal wound infections (SWIs) after cardiac surgery. However, more than 50% of coagulase-negative staphylococci, an important pathogen, are cephalosporin resistant. The aim of this study was to determine the impact of adjunctive vancomycin on SWIs in high-risk patients. METHODS: We conducted a pre- and postintervention study in an academic hospital. Preintervention (2010-2011), all patients received prophylaxis with 1...
October 16, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29042486/parameters-for-simulation-of-adult-patients-during-mechanical-ventilation
#11
Jean-Michel Arnal, Aude Garnero, Mathieu Saoli, Robert L Chatburn
BACKGROUND: Simulation studies are often used to examine ventilator performance. However, there are no standards for selecting simulation parameters. This study collected data in passively-ventilated adult human subjects and summarized the results as a set of parameters that can be used for simulation studies of intubated, passive, adult subjects with normal lungs, COPD, or ARDS. METHODS: Consecutive adult patients admitted to the ICU were included if they were deeply sedated and mechanically ventilated for <48 h without any spontaneous breathing activity...
October 17, 2017: Respiratory Care
https://www.readbyqxmd.com/read/29038519/resveratrol-therapeutics-combines-both-antimicrobial-and-immunomodulatory-properties-against-respiratory-infection-by-nontypeable-haemophilus-influenzae
#12
Begoña Euba, Nahikari López-López, Irene Rodríguez-Arce, Ariadna Fernández-Calvet, Montserrat Barberán, Nuria Caturla, Sara Martí, Roberto Díez-Martínez, Junkal Garmendia
The respiratory pathogen nontypeable Haemophilus influenzae (NTHi) is an important cause of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) that requires efficient treatments. A previous screening for host genes differentially expressed upon NTHi infection identified sirtuin-1, which encodes a NAD-dependent deacetylase protective against emphysema and is activated by resveratrol. This polyphenol concomitantly reduces NTHi viability, therefore highlighting its therapeutic potential against NTHi infection at the COPD airway...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29020397/pentraxin-3-gene-polymorphisms-and-pulmonary-aspergillosis-in-copd-patients
#13
Qian He, Hongxing Li, Yuwen Rui, Lulu Liu, Binchan He, Yi Shi, Xin Su
Background: Pentraxin 3 (PTX3) plays an important role in resistance to Aspergillus infections. Previous studies have suggested that PTX3 polymorphisms influence the risk of invasive aspergillosis among transplantation recipients. This study was to investigate the association between PTX3 gene polymorphisms and pulmonary aspergillosis in chronic obstructive pulmonary disease (COPD) population. Methods: We included 173 consecutive inpatients with COPD. 36 cases were finally diagnosed with pulmonary aspergillosis...
August 19, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28993264/sensory-mechanical-effects-of-a-dual-bronchodilator-and-its-anticholinergic-component-in-copd
#14
Denis E O'Donnell, Amany F Elbehairy, Azmy Faisal, J Alberto Neder, Katherine A Webb
This randomized, double-blind, crossover study examined the physiological rationale for using a dual long-acting bronchodilator (umeclidinium/vilanterol (UME/VIL)) versus its muscarinic-antagonist component (UME) as treatment for dyspnea and exercise intolerance in moderate COPD. After each 4-week treatment period, subjects performed pulmonary function and symptom-limited constant-work rate cycling tests with diaphragm electromyogram (EMGdi), esophageal (Pes), gastric (Pga) and transdiaphragmatic (Pdi) pressure measurements...
October 7, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28984049/mir-422a-suppresses-smad4-protein-expression-and-promotes-resistance-to-muscle-loss
#15
Richard Paul, Jen Lee, Anna V Donaldson, Martin Connolly, Mohammad Sharif, Samantha Amanda Natanek, Ulrich Rosendahl, Michael I Polkey, Mark Griffiths, Paul R Kemp
BACKGROUND: Loss of muscle mass and strength are important sequelae of chronic disease, but the response of individuals is remarkably variable, suggesting important genetic and epigenetic modulators of muscle homeostasis. Such factors are likely to modify the activity of pathways that regulate wasting, but to date, few such factors have been identified. METHODS: The effect of miR-422a on SMAD4 expression and transforming growth factor (TGF)-β signalling were determined by western blotting and luciferase assay...
October 6, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28982946/role-of-bronchodilation-and-pattern-of-breathing-in-increasing-expiratory-flow-during-progressive-hypercapnia-in-chronic-obstructive-pulmonary-disease
#16
Kevin E Finucane, Bhajan Singh
Hypercapnia (HC) in-vitro relaxes airway smooth muscle; in-vivo it increases respiratory effort, tidal expiratory flows (V'exp), and, by decreasing inspiratory duration (Ti), increases elastic recoil pressure (Pel) via lung visco-elasticity; however, its effect on airway resistance is uncertain. We examined the contributions of bronchodilation, Ti and expiratory effort to increasing V'exp ̇with progressive HC in 10 COPD subjects, mean FEV1 53% predicted. Lung volumes (Vl), V'exp, esophageal pressure (Pes), Ti and end tidal PCO2 (PetCO2) were measured during 6 tidal breaths followed by an inspiratory capacity (IC), breathing air and at 3 levels of HC...
October 5, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28981235/-lower-respiratory-tract-infections-in-immunocompetent-adult
#17
F Jacobs
Lower respiratory tract infections represent one of the main causes of mortality in the world. They essentially consist of bronchitis, acute exacerbations of chronic obstructive bronchopulmonary diseases (COPD) and acute pneumonia. If acute bronchitis is mainly of viral origin, acute exacerbations of COPD and pneumonia are mainly due to a trio of bacteria (Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis). Other pathogens as many viruses and atypical bacteria such as Mycoplasma pneumoniae, Legionella, some Enterobacteriaceae and very rarely Pseudomonas aeruginosa are also implicated...
2017: Revue Médicale de Bruxelles
https://www.readbyqxmd.com/read/28974738/a-potent-tartrate-resistant-acid-phosphatase-inhibitor-to-study-the-function-of-trap-in-alveolar-macrophages
#18
Carian E Boorsma, T Anienke van der Veen, Kurnia S S Putri, Andreia de Almeida, Christina Draijer, Thais Mauad, Gyorgy Fejer, Corry-Anke Brandsma, Maarten van den Berge, Yohan Bossé, Don Sin, Ke Hao, Anja Reithmeier, Göran Andersson, Peter Olinga, Wim Timens, Angela Casini, Barbro N Melgert
The enzyme tartrate resistant acid phosphatase (TRAP, two isoforms 5a and 5b) is highly expressed in alveolar macrophages, but its function there is unclear and potent selective inhibitors of TRAP are required to assess functional aspects of the protein. We found higher TRAP activity/expression in lungs of patients with chronic obstructive pulmonary disease (COPD) and asthma compared to controls and more TRAP activity in lungs of mice with experimental COPD or asthma. Stimuli related to asthma and/or COPD were tested for their capacity to induce TRAP...
October 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28970096/epidemiology-and-microbiological-profile-comparison-between-community-and-hospital-acquired-infections-a-multicenter-retrospective-study-in-lebanon
#19
Roula Matta, Souheil Hallit, Rabih Hallit, Wafaa Bawab, Anne-Marie Rogues, Pascale Salameh
BACKGROUND: The objective of this study is to identify and characterize the species resistance of different pathogens between community acquired and hospital acquired infections pointing at patients' related independent co-morbidities and socio-demographic factors. METHODS: It was a retrospective cohort, multicenter study from five private hospitals located in Beirut and Mount Lebanon. Two hundred fifty-eight adult patients were included. RESULTS: 110 Gram negative pathogens and 26 Gram positive pathogens were implicated in hospital acquired infections...
September 29, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28969667/general-practitioner-use-of-a-c-reactive-protein-point-of-care-test-to-help-target-antibiotic-prescribing-in-patients-with-acute-exacerbations-of-chronic-obstructive-pulmonary-disease-the-pace-study-study-protocol-for-a-randomised-controlled-trial
#20
Janine Bates, Nick A Francis, Patrick White, David Gillespie, Emma Thomas-Jones, Rachel Breen, Nigel Kirby, Kerry Hood, Micaela Gal, Rhiannon Phillips, Gurudutt Naik, Jochen Cals, Carl Llor, Hasse Melbye, Mandy Wootton, Evgenia Riga, Ann Cochrane, Robin Howe, Deborah Fitzsimmons, Bernadette Sewell, Mohammed Fasihul Alam, Christopher C Butler
BACKGROUND: Most patients presenting with acute exacerbations of chronic obstructive pulmonary disease (AECOPD) in primary care are prescribed an antibiotic, which may not always be appropriate and may cause harm. C-reactive protein (CRP) is an acute-phase biomarker that can be rapidly measured at the point of care and may predict benefit from antibiotic treatment in AECOPD. It is not clear whether the addition of a CRP point-of-care test (POCT) to clinical assessment leads to a reduction in antibiotic consumption without having a negative impact on COPD health status...
September 29, 2017: Trials
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