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"Pulmonary physiology"

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https://www.readbyqxmd.com/read/28326312/a-comparison-of-published-multidimensional-indices-to-predict-outcome-in-idiopathic-pulmonary-fibrosis
#1
Charles Sharp, Huzaifa I Adamali, Ann B Millar
Idiopathic pulmonary fibrosis (IPF) has an unpredictable course and prognostic factors are incompletely understood. We aimed to identify prognostic factors, including multidimensional indices from a significant IPF cohort at the Bristol Interstitial Lung Disease Centre in the UK. Patients diagnosed with IPF between 2007 and 2014 were identified. Longitudinal pulmonary physiology and exercise testing results were collated, with all-cause mortality used as the primary outcome. Factors influencing overall, 12- and 24-month survival were identified using Cox proportional hazards modelling and receiver operating characteristic curve analysis...
January 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28166611/health-related-quality-of-life-in-idiopathic-pulmonary-fibrosis-data-from-the-australian-ipf-registry
#2
Ian N Glaspole, Sally A Chapman, Wendy A Cooper, Samantha J Ellis, Nicole S Goh, Peter M Hopkins, Sacha Macansh, Annabelle Mahar, Yuben P Moodley, Eldho Paul, Paul N Reynolds, E Haydn Walters, Christopher J Zappala, Tamera J Corte
BACKGROUND AND OBJECTIVE: Studies analysing the effect of worsening pulmonary physiological impairment in idiopathic pulmonary fibrosis (IPF) with respect to quality of life have been limited to single centres or highly selected trial populations. The aim of this study was to determine the principal determinants of baseline and longitudinal health-related quality of life (HRQoL) in a large unselected IPF population. METHODS: We used the Australian IPF Registry to examine the relationship between HRQoL, measured using the St George Respiratory Questionnaire (SGRQ), and demographic features, physiological features, co-morbidities and symptoms...
February 6, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28055281/effects-of-bronchoscopy-on-lung-function-in-asthmatics
#3
Christina Bellinger, Eugene R Bleecker, Stephen P Peters, Rodolfo M Pascual, Jeffrey Krings, Regina V Smith, Annette Hasties, Wendy C Moore
BACKGROUND: To better understand changes in pulmonary physiology related to asthma severity following bronchoscopy, we performed scheduled pre- and post-procedure spirometry on all subjects undergoing bronchoscopy in our research program. METHODS: Control subjects and asthma subjects of all severity were recruited for bronchoscopy. On the day of bronchoscopy, subjects underwent spirometry when they arrived, after pre-bronchoscopy treatment with albuterol and then up to three sets within two hours following completion of the bronchoscopy...
January 5, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28048395/we-fg-206-07-assessing-the-lung-function-of-patients-with-non-small-cell-lung-cancer-using-hyperpolarized-xenon-129-dissolved-phase-mri
#4
K Qing, J Mugler, Q Chen
PURPOSE: Hyperpolarized xenon-129 dissolved-phase MRI is the first imaging technique that allows 3-dimensional regional mapping of ventilation and gas uptake by tissue and blood the in human lung. Multiple outcome measures can be produced from this method. Existing studies in subjects with major lung diseases compared to healthy controls demonstrated high sensitivities of this method to pulmonary physiological factors including ventilation, alveolar tissue density, surface-to-volume ratio, pulmonary perfusion and gas-blood barrier thickness...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27832494/adhesion-gpcr-function-in-pulmonary-development-and-disease
#5
Marie-Gabrielle Ludwig, Klaus Seuwen, James P Bridges
Classic G-protein-coupled receptors (GPCRs) control multiple aspects of pulmonary physiology as demonstrated by loss-of-function experiments in mice and pharmacologic targeting of GPCRs for treatment of several pulmonary diseases. Emerging data demonstrate critical roles for members of the adhesion GPCR (aGPCR) family in pulmonary development, homeostasis, and disease. Although this field is still in its infancy, this chapter will review all available data regarding aGPCRs in pulmonary biology, with a particular focus on the aGPCR for which the most substantial data to date exist: Adgrf5...
2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/27796509/lung-remodeling-associated-with-recovery-from-acute-lung-injury
#6
REVIEW
Sean E Gill, Cory M Yamashita, Ruud A W Veldhuizen
Acute respiratory distress syndrome (ARDS) is a disease with a variety of causes and is defined by severe hypoxemia. Whereas ARDS carries a mortality of approximately 30 %, patients that survive may ultimately regain near normal pulmonary physiology. The critical pathophysiological processes in ARDS are alveolar barrier dysfunction and overwhelming inflammation. This encompasses damage to the epithelial and endothelial layers, thickening of the interstitial matrix, edema with inactivation of pulmonary surfactant at the alveolar surface and marked inflammation mediated by infiltrating neutrophils and pro-inflammatory macrophages...
October 29, 2016: Cell and Tissue Research
https://www.readbyqxmd.com/read/27741949/hydrocortisone-treatment-in-early-sepsis-associated-acute-respiratory-distress-syndrome-results-of-a-randomized-controlled-trial
#7
Surat Tongyoo, Chairat Permpikul, Wasineenart Mongkolpun, Veerapong Vattanavanit, Suthipol Udompanturak, Mehmet Kocak, G Umberto Meduri
BACKGROUND: Authors of recent meta-analyses have reported that prolonged glucocorticoid treatment is associated with significant improvements in patients with severe pneumonia or acute respiratory distress syndrome (ARDS) of multifactorial etiology. A prospective randomized trial limited to patients with sepsis-associated ARDS is lacking. The objective of our study was to evaluate the efficacy of hydrocortisone treatment in sepsis-associated ARDS. METHODS: In this double-blind, single-center (Siriraj Hospital, Bangkok), randomized, placebo-controlled trial, we recruited adult patients with severe sepsis within 12 h of their meeting ARDS criteria...
October 15, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27720018/pathways-through-which-asthma-risk-factors-contribute-to-asthma-severity-in-inner-city-children
#8
Andrew H Liu, Denise C Babineau, Rebecca Z Krouse, Edward M Zoratti, Jacqueline A Pongracic, George T O'Connor, Robert A Wood, Gurjit K Khurana Hershey, Carolyn M Kercsmar, Rebecca S Gruchalla, Meyer Kattan, Stephen J Teach, Melanie Makhija, Dinesh Pillai, Carin I Lamm, James E Gern, Steven M Sigelman, Peter J Gergen, Alkis Togias, Cynthia M Visness, William W Busse
BACKGROUND: Pathway analyses can be used to determine how host and environmental factors contribute to asthma severity. OBJECTIVE: To investigate pathways explaining asthma severity in inner-city children. METHODS: On the basis of medical evidence in the published literature, we developed a conceptual model to describe how 8 risk-factor domains (allergen sensitization, allergic inflammation, pulmonary physiology, stress, obesity, vitamin D, environmental tobacco smoke [ETS] exposure, and rhinitis severity) are linked to asthma severity...
October 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27720017/distinguishing-characteristics-of-difficult-to-control-asthma-in-inner-city-children-and-adolescents
#9
Jacqueline A Pongracic, Rebecca Z Krouse, Denise C Babineau, Edward M Zoratti, Robyn T Cohen, Robert A Wood, Gurjit K Khurana Hershey, Carolyn M Kercsmar, Rebecca S Gruchalla, Meyer Kattan, Stephen J Teach, Christine C Johnson, Leonard B Bacharier, James E Gern, Steven M Sigelman, Peter J Gergen, Alkis Togias, Cynthia M Visness, William W Busse, Andrew H Liu
BACKGROUND: Treatment levels required to control asthma vary greatly across a population with asthma. The factors that contribute to variability in treatment requirements of inner-city children have not been fully elucidated. OBJECTIVE: We sought to identify the clinical characteristics that distinguish difficult-to-control asthma from easy-to-control asthma. METHODS: Asthmatic children aged 6 to 17 years underwent baseline assessment and bimonthly guideline-based management visits over 1 year...
October 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27720016/asthma-phenotypes-in-inner-city-children
#10
Edward M Zoratti, Rebecca Z Krouse, Denise C Babineau, Jacqueline A Pongracic, George T O'Connor, Robert A Wood, Gurjit K Khurana Hershey, Carolyn M Kercsmar, Rebecca S Gruchalla, Meyer Kattan, Stephen J Teach, Steven M Sigelman, Peter J Gergen, Alkis Togias, Cynthia M Visness, William W Busse, Andrew H Liu
BACKGROUND: Children with asthma in low-income urban areas have high morbidity. Phenotypic analysis in these children is lacking, but may identify characteristics to inform successful tailored management approaches. OBJECTIVE: We sought to identify distinct asthma phenotypes among inner-city children receiving guidelines-based management. METHODS: Nine inner-city asthma consortium centers enrolled 717 children aged 6 to 17 years. Data were collected at baseline and prospectively every 2 months for 1 year...
October 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27692137/clinical-features-and-natural-history-of-interstitial-pneumonia-with-autoimmune-features-a-single-center-experience
#11
Sandra Chartrand, Jeffrey J Swigris, Lina Stanchev, Joyce S Lee, Kevin K Brown, Aryeh Fischer
OBJECTIVE: To describe the clinical phenotype and natural history of a cohort of patients with interstitial pneumonia with autoimmune features (IPAF). METHODS: A retrospective, single center study of 56 patients with IPAF evaluated between February 2008 and August 2014. All clinical data were extracted from the electronic medical record and longitudinal changes in forced vital capacity (FVC) were analyzed with mixed-effects, piecewise linear regression models that considered time as a continuous factor...
October 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27428024/hyperpolarized-gas-magnetic-resonance-lung-imaging-in-children-and-young-adults
#12
Lucia Flors, John P Mugler, Eduard E de Lange, Grady W Miller, Jaime F Mata, Nick Tustison, Iulian C Ruset, F William Hersman, Talissa A Altes
The assessment of early pulmonary disease and its severity can be difficult in young children, as procedures such as spirometry cannot be performed on them. Computed tomography provides detailed structural images of the pulmonary parenchyma, but its major drawback is that the patient is exposed to ionizing radiation. In this context, magnetic resonance imaging (MRI) is a promising technique for the evaluation of pediatric lung disease, especially when serial imaging is needed. Traditionally, MRI played a small role in evaluating the pulmonary parenchyma...
September 2016: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/27401616/epidemiology-and-pulmonary-physiology-of-severe-asthma
#13
REVIEW
Jacqueline O'Toole, Lucas Mikulic, David A Kaminsky
The epidemiology and physiology of severe asthma are inherently linked because of varying phenotypes and expressions of asthma throughout the population. To understand how to better treat severe asthma, we must use both population data and physiologic principles to individualize therapies among groups with similar expressions of this disease.
August 2016: Immunology and Allergy Clinics of North America
https://www.readbyqxmd.com/read/27124279/pediatric-pulmonology-year-in-review-2015-part-1
#14
REVIEW
Richard Auten, Jurgen Schwarze, Clement Ren, Stephanie Davis, Terry L Noah
Our journal covers a broad range of research and scholarly topics related to children's respiratory disorders. For updated perspectives on the rapidly expanding knowledge in our field, we will summarize the past year's publications in our major topic areas, as well as selected publications in these areas from the core clinical journal literature outside our own pages. The current review covers articles on neonatal lung disease, pulmonary physiology, and respiratory infection. Pediatr Pulmonol. 2016;51:733-739...
July 2016: Pediatric Pulmonology
https://www.readbyqxmd.com/read/27115945/pulmonary-physiology-of-chronic-obstructive-pulmonary-disease-cystic-fibrosis-and-alpha-1-antitrypsin-deficiency
#15
James A Stockley, Robert A Stockley
Cystic fibrosis is predominantly an airway disease with marked bronchiectatic changes associated with inflammation, chronic colonization, and progressive airflow obstruction. The condition can be identified in childhood and monitored with detectable airway changes early in life while conventional spirometry remains in the normal range. Alpha-1 antitrypsin deficiency can also be detected early in life through blood spot and genetic testing and leads (in some) to the development of airflow obstruction and a predominant emphysema phenotype with bronchiectatic changes in about 30%...
April 2016: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/26932342/a-multidisciplinary-evaluation-helps-identify-the-antisynthetase-syndrome-in-patients-presenting-as-idiopathic-interstitial-pneumonia
#16
Sandra Chartrand, Jeffrey J Swigris, Lina Peykova, Jonathan Chung, Aryeh Fischer
INTRODUCTION: Interstitial lung disease (ILD) is 1 possible manifestation of the idiopathic inflammatory myopathies (IIM). Occasionally, patients presenting with ILD are mistakenly diagnosed with idiopathic interstitial pneumonia (IIP), but after multidisciplinary evaluation, their ILD is determined to be because of antisynthetase syndrome (SynS) or myositis spectrum of disease. METHODS: We used retrospective analytic methods to identify patients with ILD evaluated at the National Jewish Health between February 2008 and August 2014 and believed initially to have IIP but ultimately diagnosed with SynS or myositis spectrum of disease...
May 2016: Journal of Rheumatology
https://www.readbyqxmd.com/read/26930658/computer-aided-tomographic-analysis-of-interstitial-lung-disease-ild-in-patients-with-systemic-sclerosis-ssc-correlation-with-pulmonary-physiologic-tests-and-patient-centred-measures-of-perceived-dyspnea-and-functional-disability
#17
Fausto Salaffi, Marina Carotti, Eleonora Di Donato, Marco Di Carlo, Luca Ceccarelli, Gianmarco Giuseppetti
OBJECTIVES: This study was designed (a) to evaluate an improved quantitative lung fibrosis score based on a computer-aided diagnosis (CaM) system in patients with systemic sclerosis (SSc),-related interstitial lung disease (SSc-ILD), (b) to investigate the relationship between physiologic parameters (forced vital capacity [FVC] and single-breath diffusing capacity for carbon monoxide [DLCO]), patient-centred measures of dyspnea and functional disability and CaM and visual reader-based (CoVR) methods, and (c) to identify potential surrogate measures from quantitative and visual HRCT measurement...
2016: PloS One
https://www.readbyqxmd.com/read/26888697/prevalence-of-airflow-limitation-defined-by-pre-and-post-bronchodilator-spirometry-in-a-community-based-health-checkup-the-hisayama-study
#18
Satoru Fukuyama, Koichiro Matsumoto, Yasuko Kaneko, Keiko Kan-o, Naotaka Noda, Yukari Tajiri-Asai, Takako Nakano, Yumiko Ishii, Yutaka Kiyohara, Yoichi Nakanishi, Hiromasa Inoue
Spirometry in health checkup may contribute to early diagnosis of chronic obstructive pulmonary disease (COPD) and asthma. Although post-bronchodilator airflow limitation is essential for definite diagnosis of COPD and post-bronchodilator normalization of airflow is suggestive of asthma, this test has not been prevailed in health checkup. The objective of this study was to estimate the prevalence of airflow limitation defined by pre- and post-bronchodilator spirometry in health checkup. Post-bronchodilator spirometry was conducted for participants with airflow limitation in a town-wide health checkup for residents aged 40 years and older in Hisayama, a town in the western part of Japan...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/26847096/rituximab-for-the-treatment-of-connective-tissue-disease-associated-interstitial-lung-disease
#19
Sandra Chartrand, Jeffrey J Swigris, Lina Peykova, Aryeh Fischer
OBJECTIVE: To describe our experience with rituximab (RTX) as treatment for a diverse spectrum of chronic connective tissue disease-associated interstitial lung disease (CTD-ILD). METHODS: Twenty-four subjects with CTD-ILD were included. All had pulmonary function testing before and after their first RTX infusion. Each subject was evaluated in a multidisciplinary autoimmune and ILD outpatient clinic. Data were extracted by retrospective review of complete medical records...
January 15, 2016: Sarcoidosis, Vasculitis, and Diffuse Lung Diseases: Official Journal of WASOG
https://www.readbyqxmd.com/read/26737492/development-of-an-integrated-model-of-cardiovascular-and-pulmonary-physiology-for-the-evaluation-of-mechanical-ventilation-strategies
#20
Anup Das, Mainul Haque, Marc Chikhani, Wenfei Wang, Tayyba Ali, Oana Cole, Jonathan G Hardman, Declan G Bates
We describe the development of an integrated cardiovascular and pulmonary model for use in the investigation of novel mechanical ventilation strategies in the intensive care unit. The cardiac model includes the cardiac chambers, the pulmonary circulation and the systemic circulation. The modeling of complex mechanisms for vascular segments, time varying elastance functions of cardiovascular components and the effect of vascular resistances, in health and disease under the influence of mechanical ventilation is investigated...
2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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