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carbon monoxide diffusing capacity DLCO

Tetsuro Sawata, Masashi Bando, Masayuki Nakayama, Naoko Mato, Hideaki Yamasawa, Yukihiko Sugiyama
Objective The influence of smoking on the pathogenesis and clinical course of interstitial pneumonia has recently attracted attention. To clarify the influence of smoking on the clinical patient characteristics and therapeutic effects in patients with interstitial pneumonia presenting with a non-specific interstitial pneumonia (NSIP) pattern, we compared the clinical patient characteristics and therapeutic effects in smokers and nonsmokers in this study. Methods We divided 31 NSIP (16 idiopathic nonspecific interstitial pneumonia and 15 collagen vascular disease-associated nonspecific interstitial pneumonia) patients into smoker and non-smoker groups for each case...
2016: Internal Medicine
Michele Salati, Alessandro Brunelli
PURPOSE OF REVIEW: Surgery is considered the best treatment option for patients with early stage lung cancer. Nevertheless, lung resection may cause a variable functional impairment that could influence the whole cardio-respiratory system with potential life-threatening complications. The aim of the present study is to review the most relevant evidences about the evaluation of surgical risk before lung resection, in order to define a practical approach for the preoperative functional assessment in lung cancer patients...
2016: Current Surgery Reports
Priti Agarwal, C L Nawal, Deepak Sharma
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
Akira Yoshikawa, Shuntaro Sato, Tomonori Tanaka, Mikiko Hashisako, Yukio Kashima, Tomoshi Tsuchiya, Naoya Yamasaki, Takeshi Nagayasu, Hiroshi Yamamoto, Junya Fukuoka
PURPOSE: Pulmonary emphysema is the pathological prototype of chronic obstructive pulmonary disease and is also associated with other lung diseases. We considered that observation with different approaches may provide new insights for the pathogenesis of emphysema. PATIENTS AND METHODS: We reviewed tissue blocks of the lungs of 25 cases with/without emphysema and applied a three-dimensional observation method to the blocks. Based on the three-dimensional characteristics of the alveolar structure, we considered one face of the alveolar polyhedron as a structural unit of alveoli and called it a framework unit (FU)...
2016: International Journal of Chronic Obstructive Pulmonary Disease
Laura Gochicoa-Rangel, Rogelio Pérez-Padilla, Juan Carlos Vázquez-García, Mónica Silva-Cerón, Silvia Cid-Juárez, David Martínez-Briseño, Paul L Enright, Robert Jensen, Luis Torre-Bouscoulet
BACKGROUND: The 2005 American Thoracic Society/European Respiratory Society guidelines for single-breath diffusing capacity of the lung for carbon monoxide (DLCO) recommend a weekly biological control test and/or DLCO simulator to detect instrument error drift. Very little has been published regarding the results of such a quality assurance program. Our aim was to analyze the long-term stability of a portable DLCO instrument. METHODS: We used a new EasyOne Pro system and checked its accuracy using a DLCO simulator with 2 reference gases (concentration A: carbon monoxide [CO] = 0...
September 27, 2016: Respiratory Care
W Naumnik, B Naumnik, W Niklińska, M Ossolińska, E Chyczewska
Osteoprotegerin (OPG), a soluble tumor necrosis factor receptor family molecule, protects endothelial cells from apoptosis in vitro and promotes neovascularization in vivo. Angiogenesis may be crucial for the course and outcome of sarcoidosis. In this study, we evaluated the clinical usefulness of OPG and its ligand, a soluble receptor activator of nuclear factor-kappaB (sRANKL), in bronchoalveolar lavage fluid (BALF) in patients with sarcoidosis (BBS, Besniera-Boeck-Schaumann disease). We studied 22 BBS patients and 15 healthy volunteers as a control group...
September 20, 2016: Advances in Experimental Medicine and Biology
Sunil Kumar Chhabra, Rajeev Kumar, Uday A Gupta
BACKGROUND: Prediction equations for diffusing capacity of lung for carbon monoxide (DLCO), alveolar volume (VA), and DLCO/VA using the current standardization guidelines are not available for Indian population. The present study was carried out to develop equations for these parameters for North Indian adults and examine the ethnic diversity in predictions. MATERIALS AND METHODS: DLCO was measured by single-breath technique and VA by single-breath helium dilution using standardized methodology in 357 (258 males, 99 females) normal nonsmoker adult North Indians and DLCO/VA was computed...
September 2016: Lung India: Official Organ of Indian Chest Society
Simon Pingel, Sebastian Gorgonius Passon, Kristin Solveig Pausewang, Anna Katharina Blatzheim, Carmen Pizarro, Izabela Tuleta, Martin Gliem, Peter Charbel Issa, Nadjib Schahab, Georg Nickenig, Dirk Skowasch, Christian Alexander Schaefer
BACKGROUND: Pseudoxanthoma elasticum (PXE) is an autosomal-recessive mineralisation disorder caused by loss of function mutations in the ABCC6 Gen. Histological findings and data of an autopsy of a PXE-patient suggest a possible pulmonal calcification. So far, there exists no clinical data whether PXE patients actually are at high risk of developing pulmonary disorder. METHODS: In a cross-sectional study, 35 PXE patients and 15 healthy controls underwent a pulmonary function testing, including spirometry, body plethysmography and carbon monoxide diffusing test...
2016: PloS One
Cecile Chenivesse, Sarah Boulanger, Carole Langlois, Lidwine Wemeau-Stervinou, Thierry Perez, Benoit Wallaert
BACKGROUND: Common tests for evaluating gas exchange impairment have different strengths and weaknesses. Alveolar-to-arterial oxygen pressure difference (AaDO2) at peak exercise is a sensitive indicator but it cannot be measured repeatedly. Diffusing capacity of the lung for carbon monoxide (DLco) is measured at rest and may be too insensitive to predict the effects of exercise on gas exchange impairment. Oxygen desaturation during a 6-minute walk test (∆SpO2-6MWT) can be measured repeatedly, but its value in sarcoidosis is unknown...
August 2016: Journal of Thoracic Disease
B Odler, A Bikov, J Streizig, C Balogh, E Kiss, K Vincze, I Barta, I Horváth, V Müller
Biomarkers for pulmonary manifestations in systemic lupus erythematosus (SLE) are missing. Plasma samples of nine SLE patients with known pulmonary involvement (SLEpulm) and nine SLE patients without pulmonary involvement (SLE) were tested by multiplex microarray analysis for various cyto- and chemokines. Significantly decreased lung function paramters for forced vital capacity (FVC), total lung capacity (TLC), diffusion capacity for carbon monoxide (DLCO) and diffusion of CO corrected on lung volume (KLCO) were observed in SLEpulm as compared to SLE patients...
September 10, 2016: Lupus
Rika Suda, Nobuhiro Tanabe, Keiichi Ishida, Fumiaki Kato, Takashi Urushibara, Ayumi Sekine, Rintaro Nishimura, Takayuki Jujo, Toshihiko Sugiura, Ayako Shigeta, Seiichiro Sakao, Koichiro Tatsumi
BACKGROUND AND OBJECTIVE: Chronic thromboembolic pulmonary hypertension (CTEPH) is a progressive disease in some patients, despite improved treatments. Microvasculopathy has been implicated in the poor outcomes of patients with CTEPH. A reduction in the diffusing capacity for carbon monoxide (DLCO ) was previously suggested to indicate microvasculopathy in CTEPH patients; therefore, we assessed DLCO /alveolar ventilation (DLCO /VA ) as a prognostic and pathophysiological marker in CTEPH...
September 11, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
Ming-Han Chen, Chun-Ku Chen, Hsiao-Ping Chou, Ming-Huang Chen, Chang-Youh Tsai, Deh-Ming Chang
OBJECTIVES: Interstitial lung disease (ILD) is one of the major systemic manifestations of primary Sjögren's syndrome (pSS). The aim of this study was to evaluate the therapeutic effect of rituximab on pSS patients with ILD. METHODS: Pulmonary function test results, including diffusing capacity for carbon monoxide (DLCO) and DLCO/alveolar volume (Va) ratio, and high-resolution computed tomography (HRCT) findings/scores in ten pSS patients with ILD treated with rituximab were retrospectively investigated...
August 31, 2016: Clinical and Experimental Rheumatology
Franziska C Trudzinski, Anna J Höink, Daniela Leppert, Sebastian Fähndrich, Heinrike Wilkens, Thomas P Graeter, Frank Langer, Robert Bals, Peter Minko, Philipp M Lepper
BACKGROUND: Patients with a forced expiratory volume in 1 s (FEV1) below 20% of the predicted normal values (pred.) and either homogeneous emphysema or low diffusing capacity for carbon monoxide (DLCO) have a high risk for adverse events including death when undergoing surgical lung volume reduction. OBJECTIVES: We hypothesized that selected patients can benefit from endoscopic lung volume reduction (eLVR) despite a very low FEV1. METHODS: This study is a retrospective analysis of consecutive patients with severe airflow obstruction, an FEV1 ≤20% of pred...
2016: Respiration; International Review of Thoracic Diseases
Michael L Storebø, Tomas M L Eagan, Geir E Eide, Amund Gulsvik, Einar Thorsen, Per S Bakke
RATIONALE: Data on the change in diffusion capacity of the lung for carbon monoxide (DLCO) over time are limited. We aimed to examine change in DLCO (ΔDLCO) over a 9-year period and its predictors. METHODS: A Norwegian community sample comprising 1,152 subjects aged 18-73 years was examined in 1987 and 1988. Of the 1,109 subjects still alive, 830 (75%) were re-examined in 1996/97. DLCO was measured with the single breath-holding technique. Covariables recorded at baseline included sex, age, height, weight, smoking status, pack years, occupational exposure, educational level, and spirometry...
2016: European Clinical Respiratory Journal
P Ning, Y F Guo, T Y Sun, H S Zhang, D Chai, X M Li
OBJECTIVE: To study the distinct clinical phenotype of chronic airway diseases by hierarchical cluster analysis and two-step cluster analysis. METHODS: A population sample of adult patients in Donghuamen community, Dongcheng district and Qinghe community, Haidian district, Beijing from April 2012 to January 2015, who had wheeze within the last 12 months, underwent detailed investigation, including a clinical questionnaire, pulmonary function tests, total serum IgE levels, blood eosinophil level and a peak flow diary...
September 1, 2016: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
Paul Enright Md
Measurement of diffusing capacity of the lungs for carbon monoxide (DLCO), also known as transfer factor, is the second most important pulmonary function test (PFT), after spirometry. Previously available only in hospital-based PFT labs, DLCO testing is now available at outpatient clinics using a portable device. Compared to spirometry tests, assessments with these devices require very little effort. The patient breathes quietly, inhales the test gas, holds the breath for ten seconds, and then exhales. In adult smokers with post-bronchodilator airway obstruction, a low DLCO greatly increases the probability of the emphysema phenotype of COPD due to cigarette smoking, while a normal DLCO makes chronic asthma more likely...
September 2016: Respiratory Investigation
N Del Papa, F Onida, E Zaccara, G Saporiti, W Maglione, E Tagliaferri, R Andracco, D Vincenti, T Montemurro, L Mircoli, C Vitali, A Cortelezzi
We retrospectively evaluated the efficacy of autologous hematopoietic stem cell transplantation (AHSCT) in 18 patients with rapidly progressive diffuse cutaneous systemic sclerosis (rp-dcSSc), and compared their disease outcomes with those of 36 demographically- and clinically-matched patients treated with conventional therapies. Cutaneous involvement, by performing modified Rodnan skin score (mRss), lung diffusion capacity, by measuring diffusing capacity of lung for carbon monoxide (DLCO), and disease activity, by applying the European Scleroderma Study Group (ESSG) scoring system, were the outcome variables measured at the baseline time and then every 12 months for the following 60 months in both the AHSCT-treated patients and the control group...
August 22, 2016: Bone Marrow Transplantation
Francesco Bonella, Michael Kreuter, Lars Hagmeyer, Claus Neurohr, Claus Keller, Martin J Kohlhaeufl, Joachim Müller-Quernheim, Katrin Milger, Antje Prasse
BACKGROUND: Nintedanib is approved for the treatment of idiopathic pulmonary fibrosis (IPF) and has been shown to slow disease progression by reducing annual lung function decline. OBJECTIVE: To evaluate the results of a large cohort of IPF patients treated with nintedanib within a compassionate use program (CUP) in Germany (9 centers). METHODS: Patients (≥40 years) were required to have a confirmed diagnosis of IPF, a forced vital capacity (FVC) ≥50% predicted (pred...
2016: Respiration; International Review of Thoracic Diseases
Marina De Martino, Raffaele Cobuccio, Dario Bruzzese, Gaetano Rea, Ilernando Meoli, Francesco Stefanelli, Angelo Canora, Annalisa Capaccio, Alessandro Sanduzzi, Alessandro Matarese, Marialuisa Bocchino
Assessment of exercise performance is a key component in the management of interstitial lung diseases, as its limitation may occur very early. Aim of the present study was to assess ventilation dynamics in combination with pulse-oximetry changes in 54 clinically stable patients affected by idiopathic pulmonary fibrosis or idiopathic fibrotic nonspecific interstitial pneumonia. Testing was successfully performed with the Spiropalm 6-MWT Hand-held spirometer by the majority of cases (94%). End test oxygen saturation (SpO2) values <88% were common in most of patients (76%), with a mean distance walked of 403 meters...
2016: Sarcoidosis, Vasculitis, and Diffuse Lung Diseases: Official Journal of WASOG
He Tai, Ming-Yue Wang, Yue-Ping Zhao, Ling-Bing Li, Qian-Yan Dong, Xin-Guang Liu, Jin-Song Kuang
BACKGROUND: To observe the effect of alogliptin combined with metformin on pulmonary function in obese patients with type 2 diabetes inadequately controlled by metformin monotherapy (500 mg, bid po, for at least 3 months), and evaluate its efficacy and safety. METHODS: After a 2-week screening period, adult patients (aged 36-72 years) entered a 4-week run-in/stabilization period. Then, patients were randomly assigned to either the intervention group (n = 55) or the control group (n = 50) for 26 weeks...
August 2016: Medicine (Baltimore)
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