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carbon monoxide diffusing capacity of the lungs

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https://www.readbyqxmd.com/read/28444364/effect-of-rituximab-on-the-progression-of-rheumatoid-arthritis-related-interstitial-lung-disease-10-years-experience-at-a-single-centre
#1
Md Yuzaiful Md Yusof, Angela Kabia, Michael Darby, Giovanni Lettieri, Paul Beirne, Edward M Vital, Shouvik Dass, Paul Emery
Objective.: To evaluate the effect of rituximab (RTX) in patients with RA-related interstitial lung disease (RA-ILD) and identify factors associated with outcome after treatment. Methods.: An observational study of patients with RA-ILD was conducted from a cohort of RTX-treated RA patients in a single centre for >10 years. Progression was defined by any of the following: a decrease of pre-RTX forced vital capacity (FVC) >10% or diffusion capacity of carbon monoxide (DLCO) >15% predicted, worsening of the ILD score or death from progressive ILD...
April 24, 2017: Rheumatology
https://www.readbyqxmd.com/read/28443582/high-resolution-computed-tomography-and-pulmonary-function-findings-of-occupational-arsenic-exposure-in-workers
#2
Recai Ergün, Ender Evcik, Dilek Ergün, Begüm Ergan, Esin Özkan, Özge Gündüz
BACKGROUND: The number of studies where non-malignant pulmonary diseases are evaluated after occupational arsenic exposure are very few. AIMS: The aim of this study is to show the effects of occupational arsenic exposure on the lung by high-resolution computed tomography (HRCT) and pulmonary function tests (PFTs). STUDY DESIGN: Retrospective cross-sectional study. METHODS: In this study 256 workers who were suspected respiratory occupational arsenic exposure are included, having average age 32...
April 6, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28442016/-analysis-of-postoperative-complications-and-risk-factors-of-patients-with-lung-cancer-through-clavien-dindo-classification
#3
Pengfei Li, Yutian Lai, Kun Zhou, Guowei Che
BACKGROUND: Postoperative complications (PCs) are contributing factors to patient mortality following lung resection. In this retrospective study, the Clavien-Dindo classification was used to analyze the current incidence of PCs and identify the risk factors of different grades of PCs. METHODS: A total of 966 lung cancer patients who underwent lobectomy in our department between June 2013 and December 2014 were retrospectively enrolled. Patients were divided into two groups depending on the occurrence of PCs...
April 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28424548/decreased-levels-of-irisin-a-skeletal-muscle-cell-derived-myokine-are-related-to-emphysema-associated-with-chronic-obstructive-pulmonary-disease
#4
Yukari Sugiyama, Kazuhisa Asai, Kazuhiro Yamada, Yuko Kureya, Naoki Ijiri, Tetsuya Watanabe, Hiroshi Kanazawa, Kazuto Hirata
BACKGROUND: Cigarette smoking-induced oxidant-antioxidant imbalance is a factor that contributes to the pathogenesis of COPD through epithelial cell apoptosis. Irisin is a skeletal muscle cell-derived myokine associated with physical activity. Irisin is also known to decrease oxidant-induced apoptosis in patients with diabetes mellitus. However, the correlation between irisin and emphysema in COPD and its role in epithelial cell apoptosis remains unknown. SUBJECTS AND METHODS: Forty patients with COPD were enrolled in this study...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28413774/a-diffuse-lung-emphysema-severe-pulmonary-hypertension-and-lack-of-airflow-limitation
#5
Morgane Faure, Emmanuel Gomez, Peter Dorfmüller, Damien Mandry, Matthieu Canuet, Romain Kessler, François Chabot, Ari Chaouat
Pulmonary veno-occlusive disease is characterized by remodeling of pulmonary arteries, capillaries and venules. We report a case of diffuse lung emphysema and pulmonary veno-occlusive disease with the characteristic of having no airflow limitation. A very low diffusing capacity for carbon monoxide and results of high-resolution computed tomography of the chest suggested pulmonary veno-occlusive disease. The diagnosis was confirmed on histological analysis after lung transplantation. The combination of results of the computed tomography of the chest and the histological analysis suggested a relationship between diffuse lung emphysema and remodeling of pulmonary vessels...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28410589/lung-involvement-in-childhood-onset-granulomatosis-with-polyangiitis
#6
REVIEW
Giovanni Filocamo, Sofia Torreggiani, Carlo Agostoni, Susanna Esposito
Granulomatosis with polyangiitis is an ANCA-associated systemic vasculitis with a low incidence in the pediatric population. Lung involvement is a common manifestation in children affected by granulomatosis with polyangiitis, both at disease's onset and during flares. Its severity is variable, ranging from asymptomatic pulmonary lesions to dramatic life-threatening clinical presentations such as diffuse alveolar haemorrhage. Several radiologic findings have been described, but the most frequent abnormalities detected are nodular lesions and fixed infiltrates...
April 14, 2017: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/28408813/copd-is-commonly-underdiagnosed-in-patients-with-lung-cancer-results-from-the-recoil-study-retrospective-study-of-copd-infradiagnosis-in-lung-cancer
#7
Dámaso Parrón Collar, Mario Pazos Guerra, Paula Rodriguez, Carolina Gotera, Ignacio Mahíllo-Fernández, Germán Peces-Barba, Luis M Seijo
INTRODUCTION: Many patients with COPD are underdiagnosed, including patients with coexisting lung cancer. METHODS: We conducted a retrospective study of COPD prevalence and outcomes among all patients diagnosed with lung cancer at our institution during a 2-year period. Patients with known COPD (group A) were compared with those who received a diagnosis of COPD at the time of their oncologic workup (group B). RESULTS: A total of 306 patients were diagnosed with lung cancer during the study period, including 87 with COPD (28...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28408655/military-small-arms-fire-in-association-with-acute-decrements-in-lung-function
#8
Anne Katrine Borander, Øyvind Albert Voie, Kjetil Longva, Tor Erik Danielsen, Svein Grahnstedt, Leiv Sandvik, Johny Kongerud, Liv Ingunn Bjoner Sikkeland
OBJECTIVE: After introduction of unleaded ammunition, Norwegian Armed Forces received reports of acute respiratory symptoms in soldiers after exposure to fumes from firing the standard weapon, HK416. The aim of the present study was to examine lung function before and after exposure to fumes from HK416 in a double-blinded standardised study design using three different types of ammunition. METHODS: Fifty-four healthy, non-smoking male volunteers (19-62 years) fired the weapons for 60 min with either leaded, unleaded or 'modified' unleaded ammunition...
April 13, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28399675/evaluating-the-appropriateness-of-hospital-doctors-requests-for-pulmonary-function-tests-beyond-basic-spirometry-results-from-a-prospective-observational-study
#9
Krishna Bajee Sriram, Zoe Fountain, Jessica Hockenhull, Debbie Zagami
OBJECTIVES: Hospitalists request 'complete' pulmonary function tests (PFTs), typically comprising of spirometry, diffusion capacity of the lung for carbon monoxide (DLCO) and absolute lung volumes (ALVs), the results of which assist in the management of patients with respiratory disorders. Recently, concerns have been raised about over-requesting of 'complete' PFTs, but there is a paucity of information on the proportion of requests that can be considered clinically inappropriate. This study prospectively evaluated the 'complete' PFTs requested in a hospital service and assessed the impact of medical review of the requests...
April 19, 2017: Hospital Practice (Minneapolis)
https://www.readbyqxmd.com/read/28388260/acute-exacerbation-and-decline-in-forced-vital-capacity-are-associated-with-increased-mortality-in-idiopathic-pulmonary-fibrosis
#10
Miya O Paterniti, Youwei Bi, Dinko Rekić, Yaning Wang, Banu A Karimi-Shah, Badrul A Chowdhury
RATIONALE: Exploration of forced vital capacity (FVC) as it relates to mortality in idiopathic pulmonary fibrosis (IPF), a chronic, progressive, and ultimately fatal parenchymal lung disease, is important both clinically and to the current drug development paradigm. We evaluated the association between FVC decline and mortality in the largest, well-characterized placebo cohort to date. Additionally, we sought to explore the risk of death from acute exacerbations and further validate previously identified baseline predictors of mortality...
April 7, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28370836/lower-limb-muscle-function-is-a-determinant-of-exercise-tolerance-after-lung-resection-surgery-in-patients-with-lung-cancer
#11
Chris Burtin, Frits M E Franssen, Lowie E G W Vanfleteren, Miriam T J Groenen, Emiel F M Wouters, Martijn A Spruit
BACKGROUND AND OBJECTIVE: This study aims to investigate the association between exercise tolerance, pulmonary function and lower-limb muscle function in patients with lung cancer who underwent lung resection surgery in the previous year. METHODS: Sixty-four patients (age: 67 ± 11 years, 66% males) performed a symptom-limited incremental cycle test to define peak oxygen consumption (VO2 peak) and peak workload (Wpeak). The best of two 6-min walking distance (6MWD) tests was also included...
March 30, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28368706/resting-physiological-correlates-of-reduced-exercise-capacity-in-smokers-with-mild-airway-obstruction
#12
Amany F Elbehairy, Azmy Faisal, Jordan A Guenette, Dennis Jensen, Katherine A Webb, Rashid Ahmed, J Alberto Neder, Denis E O'Donnell
Smokers with minor spirometric abnormalities can experience persistent activity-related dyspnea and exercise intolerance. Additional resting tests can expose heterogeneous physiological abnormalities, but their relevance and association with clinical outcomes remain uncertain. Subjects included sixty-two smokers (≥20 pack-years), with cough and/or dyspnea and minor airway obstruction [forced expiratory volume in one-second (FEV1) ≥80% predicted and >5th percentile lower limit of normal (LLN) (i.e., z-score >-1...
April 3, 2017: COPD
https://www.readbyqxmd.com/read/28340090/predictive-value-of-european-scleroderma-group-activity-index-in-an-early-scleroderma-cohort
#13
Tatiana Nevskaya, Murray Baron, Janet E Pope
Objective.: To estimate the effect of disease activity, as measured by the European Scleroderma Research Group Activity Index (EScSG-AI), on the risk of subsequent organ damage in a large systemic sclerosis (SSc) cohort. Methods.: Of 421 SSc patients from the Canadian Scleroderma Research Group database with disease duration of ⩽ 3 years, 197 who had no evidence of end-stage organ damage initially and available 3 year follow-up were included. Disease activity was assessed by the EScSG-AI with two variability measures: the adjusted mean EScSG-AI (the area under the curve of the EScSG-AI over the observation period) and persistently active disease/flare...
March 17, 2017: Rheumatology
https://www.readbyqxmd.com/read/28336536/the-effect-of-aging-and-cardiorespiratory-fitness-on-the-lung-diffusing-capacity-response-to-exercise-in-healthy-humans
#14
Kirsten E Coffman, Alex R Carlson, Andrew D Miller, Bruce D Johnson, Bryan Joseph Taylor
Aging is associated with deterioration in the structure and function of the pulmonary circulation. We characterized the lung diffusing capacity for carbon monoxide (DLCO), alveolar-capillary membrane conductance (DmCO), and pulmonary-capillary blood volume (VC) response to discontinuous incremental exercise at 25, 50, 75, and 90% of peak work (Wpeak) in four groups: 1) Young [27 ± 3 y, maximal oxygen consumption (V̇O2max) 110 ± 18% age-predicted]; 2) Young Highly-Fit (27 ± 3 y, V̇O2max 147 ± 8% age-predicted); 3) Old (69 ± 5 y, V̇O2max 116 ± 13% age-predicted); and 4) Old Highly-Fit (65 ± 5 y, V̇O2max 162 ± 18% age-predicted)...
March 23, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28332341/risk-factors-for-acute-exacerbation-of-idiopathic-pulmonary-fibrosis-a-systematic-review-and-meta-analysis
#15
Meihua Qiu, Yuqing Chen, Qiao Ye
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a chronic andprogressive fibrotic disease limited to the lungs.The course of disease varies widely, with some patients experiencing acute respiratory deterioration, a conditioncalled acute exacerbations of IPF (AE-IPF). The risk factors contributing to AE-IPF are unclear. This systematic review and meta-analysis investigatedthe risk factors for AE-IPF. METHODS: Studies ofrisk factors for AE-IPF were identified in Medline, EMBASE and Cochrane databases...
March 23, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28326312/a-comparison-of-published-multidimensional-indices-to-predict-outcome-in-idiopathic-pulmonary-fibrosis
#16
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/28321059/arterial-carboxyhemoglobin-measurement-is-useful-for-evaluating-pulmonary-inflammation-in-subjects-with-interstitial-lung-disease
#17
Yu Hara, Masaharu Shinkai, Soichiro Kanoh, Yuji Fujikura, Bruce K Rubin, Akihiko Kawana, Takeshi Kaneko
Objective The arterial concentration of carboxyhemoglobin (CO-Hb) in subjects with inflammatory pulmonary disease is higher than that in healthy individuals. We retrospectively analyzed the relationship between the CO-Hb concentration and established markers of disease severity in subjects with interstitial lung disease (ILD). Methods The CO-Hb concentration was measured in subjects with newly diagnosed or untreated ILD and the relationships between the CO-Hb concentration and the serum biomarker levels, lung function, high-resolution CT (HRCT) findings, and the uptake in gallium-67 ((67)Ga) scintigraphy were evaluated...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28319189/lung-function-parameters-improve-prediction-of-vo2peak-in-an-elderly-population-the-generation-100-study
#18
Erlend Hassel, Dorthe Stensvold, Thomas Halvorsen, Ulrik Wisløff, Arnulf Langhammer, Sigurd Steinshamn
Peak oxygen uptake (VO2peak) is an indicator of cardiovascular health and a useful tool for risk stratification. Direct measurement of VO2peak is resource-demanding and may be contraindicated. There exist several non-exercise models to estimate VO2peak that utilize easily obtainable health parameters, but none of them includes lung function measures or hemoglobin concentrations. We aimed to test whether addition of these parameters could improve prediction of VO2peak compared to an established model that includes age, waist circumference, self-reported physical activity and resting heart rate...
2017: PloS One
https://www.readbyqxmd.com/read/28303059/marginal-pulmonary-function-is-associated-with-poor-short-and-long-term-outcomes-in-lung-cancer-surgery
#19
Naoki Ozeki, Koji Kawaguchi, Toshiki Okasaka, Takayuki Fukui, Koichi Fukumoto, Shota Nakamura, Shuhei Hakiri, Kohei Yokoi
We sought to determine the short- and long-term prognoses among 'marginal-risk' non-small cell lung cancer patients who have a predicted postoperative- (ppo) forced expiratory volume in the first second (FEV1) of 30-60% and/or a ppo-diffusing capacity of the lung for carbon monoxide (DLCO) of 30-60%. The present study included 73 'marginal-risk' and 318 'normal-risk' patients who underwent anatomical resection for clinical stage I lung cancer between 2008 and 2012. The rates of postoperative morbidity, prolonged hospital stay, and overall survival were assessed...
February 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28285692/chest-wall-resection-for-non-small-cell-lung-cancer-a-case-matched-study-of-postoperative-pulmonary-function-and-quality-of-life
#20
Ming Liu, Jason A Wampfler, Jie Dai, Ruchi Gupta, Zhiqiang Xue, Shawn M Stoddard, Stephen D Cassivi, Gening Jiang, Ping Yang
BACKGROUND: To assess the pulmonary function and quality of life (QOL) after chest wall resection for non-small cell lung cancer. MATERIAL AND METHODS: One hundred and thirty-five patients (cases) who underwent pulmonary resection with chest wall removal were identified from January 1997 to December 2015. Propensity score matching (1:3) was applied to balance known confounders for pulmonary function and QOL between the cases and the control group who underwent pulmonary resection without chest wall invasion...
April 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
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