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Dive into the research topics where N.M. Siafakas is active.

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Featured researches published by N.M. Siafakas.


European Respiratory Journal | 2004

Standards for the diagnosis and treatment of patients with COPD: a summary of the ATS/ERS position paper

Br Celli; W. Macnee; Alvar Agusti; Antonio Anzueto; B Berg; As Buist; Pma Calverley; N. H. Chavannes; T Dillard; Bonnie Fahy; A Fein; John E. Heffner; Suzanne C. Lareau; Paula Meek; Fernando J. Martinez; W Mcnicholas; J Muris; E Austegard; Romain Pauwels; S. Rennard; Andrea Rossi; N.M. Siafakas; B Tiep; Jørgen Vestbo; Efm Wouters; Richard ZuWallack

The Standards for the Diagnosis and Treatment of Patients with COPD document 2004 updates the position papers on chronic obstructive pulmonary disease (COPD) published by the American Thoracic Society (ATS) and the European Respiratory Society (ERS) in 1995 1, 2. Both societies felt the need to update the previous documents due to the following. 1) The prevalence and overall importance of COPD as a health problem is increasing. 2) There have been enough advances in the field to require an update, especially adapted to the particular needs of the ATS/ERS constituency. 3) It allows for the creation of a “live” modular document based on the web; it should provide healthcare professionals and patients with a user friendly and reliable authoritative source of information. 4) The care of COPD should be comprehensive, is often multidisciplinary and rapidly changing. 5) Both the ATS and the ERS acknowledge the recent dissemination of the Global Initiative of Obstructive Lung Disease (GOLD) 3 as a major worldwide contribution to the battle against COPD. However, some specific requirements of the members of both societies require adaptation of the broad GOLD initiative. Those requirements include specific recommendations on oxygen therapy, pulmonary rehabilitation, noninvasive ventilation, surgery in and for COPD, sleep, air travel, and end-of-life. In addition, special emphasis has been placed on issues related to the habit of smoking and its control. ### Goals and objectives The main goals of the updated document are to improve the quality of care provided to patients with COPD and to develop the project using a disease-oriented approach. To achieve these goals, both organisations have developed a modular electronic web-based document with two components. 1) A component for health professionals that intends to: raise awareness of COPD; inform on the latest advances in the overall pathogenesis, diagnosis, monitoring and management of COPD; and …


Allergy | 2010

The small airways and distal lung compartment in asthma and COPD: a time for reappraisal

Jean Bousquet; Leonardo M. Fabbri; Helgo Magnussen; Klaus F. Rabe; N.M. Siafakas; Q. Hamid; Monica Kraft

To cite this article: Contoli M, Bousquet J, Fabbri LM, Magnussen H, Rabe KF, Siafakas NM, Hamid Q, Kraft M. The small airways and distal lung compartment in asthma and COPD: a time for reappraisal. Allergy 2010; 65: 141–151.


European Respiratory Journal | 2009

Pivotal clinical dilemmas in collagen vascular diseases associated with interstitial lung involvement

Katerina M. Antoniou; George A. Margaritopoulos; F. Economidou; N.M. Siafakas

The connective tissue disorders (CTDs), also called collagen vascular diseases (CVDs), represent a heterogeneous group of immunologically mediated inflammatory disorders with a large variety of affected organs. Individuals with a CTD (rheumatoid arthritis, systemic lupus erythematosus, systemic sclerosis, Sjögrens syndrome, polymyositis/dermatomyositis and mixed connective tissue disease) are susceptible to respiratory involvement. When the lungs are affected, an increasing mortality and morbidity in CVDs occurs. Interstitial lung disease (ILD) is established as a clinical corollary across the spectrum of CTDs, with an overall incidence estimated at 15%. Therefore, pivotal clinical dilemmas remain in the evaluation and management of ILD involvement in CVDs. Critical questions are the presence of fibrosis and whether the disease is clinically significant. Moreover, the clinician has to decide if treatment is warranted and which is the best therapeutic approach. The use of additional tests, such as pulmonary function tests, high-resolution computed tomography scan, bronchoalveolar lavage fluid and surgical lung biopsy, deserves better discussion. The present review focuses on establishing the diagnosis of ILD in CTD, and on evaluating disease activity and prognosis. This will provide the basis for therapeutic decisions that will be discussed, including an overview of recent advances.


European Respiratory Review | 2015

An official American Thoracic Society/European Respiratory Society statement: research questions in COPD

Bartolome R. Celli; Marc Decramer; Jadwiga A. Wedzicha; Kevin C. Wilson; Alvar Agustí; Gerard J. Criner; William MacNee; Barry J. Make; Stephen I. Rennard; Robert A. Stockley; Claus Vogelmeier; Antonio Anzueto; David H. Au; Peter J. Barnes; Pierre Régis Burgel; Peter Calverley; Ciro Casanova; Enrico Clini; Christopher B. Cooper; Harvey O. Coxson; Daniel Dusser; Leonardo M. Fabbri; Bonnie Fahy; Gary T. Ferguson; Andrew J. Fisher; Monica Fletcher; Maurice Hayot; John R. Hurst; Paul W. Jones; Donald A. Mahler

Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity, mortality and resource use worldwide. The goal of this official American Thoracic Society (ATS)/European Respiratory Society (ERS) Research Statement is to describe evidence related to diagnosis, assessment, and management; identify gaps in knowledge; and make recommendations for future research. It is not intended to provide clinical practice recommendations on COPD diagnosis and management. Clinicians, researchers and patient advocates with expertise in COPD were invited to participate. A literature search of Medline was performed, and studies deemed relevant were selected. The search was not a systematic review of the evidence. Existing evidence was appraised and summarised, and then salient knowledge gaps were identified. Recommendations for research that addresses important gaps in the evidence in all areas of COPD were formulated via discussion and consensus. Great strides have been made in the diagnosis, assessment and management of COPD, as well as understanding its pathogenesis. Despite this, many important questions remain unanswered. This ATS/ERS research statement highlights the types of research that leading clinicians, researchers and patient advocates believe will have the greatest impact on patient-centred outcomes. ATS/ERS statement highlighting research areas that will have the greatest impact on patient-centred outcomes in COPD http://ow.ly/LXW2J


Respiratory Medicine | 2010

A one-year trial of tiotropium Respimat® plus usual therapy in COPD patients

Eric D. Bateman; Donald P. Tashkin; N.M. Siafakas; Ronald Dahl; Lesley Towse; D. Massey; Demetri Pavia; Nanshan Zhong

In this randomised double-blind study, patients >or=40 years old with COPD, a smoking history of >or=10 pack-years, a pre-bronchodilator FEV(1) of <or=60% predicted and an FEV(1)/FVC of <or=70% received tiotropium 5 microg or placebo via Respimat inhaler once daily for 48 weeks. Other medications were permitted except inhaled anticholinergics. Co-primary endpoints were trough FEV(1) and the time to first exacerbation. Adverse events were followed and vital status regularly assessed. In all, 3991 patients (mean age, 65 years [SD, 9 years]) were evaluable. Mean baseline FEV(1) was 1.11 L (0.40 L) or 40% (12%) of predicted normal. Adjusted mean differences in trough FEV(1) and trough FVC at Week 48 (tiotropium minus placebo) were 102 and 168 ml respectively (p < 0.0001, both). Tiotropium delayed time to first exacerbation relative to placebo (hazard ratio [HR], 0.69 [95% CI, 0.63-0.77]) and time to first hospital-treated exacerbation (HR, 0.73 [0.59-0.90]). SGRQ score at Week 48 was 2.9 units lower with tiotropium (p < 0.0001). Adverse and serious adverse events were balanced across treatment groups and similar in profile to previous tiotropium trials. The rate ratio for a major adverse cardiovascular event during the treatment period + 30 days was 1.12 (0.67-1.86). By the end of planned treatment (Day 337) 52 patients on tiotropium (incidence rate per 100 years, 2.94) and 38 on placebo (2.13) had died (HR = 1.38 [0.91-2.10]; p = 0.13). Lung function, exacerbations and quality of life were improved by tiotropium 5 microg Respimat but a numerical imbalance was seen in all-cause mortality. The protocol is registered on the European Clinical Trials Database as trial number 2006-001009-27 and in the ClinicalTrials.gov database as NCT00387088.


Clinical & Experimental Allergy | 2007

Near-fatal asthma phenotype in the ENFUMOSA Cohort.

M. Romagnoli; Gaetano Caramori; Fausto Braccioni; Franco Ravenna; E. Barreiro; N.M. Siafakas; Antonio M. Vignola; Pascal Chanez; Leonardo M. Fabbri; Alberto Papi

Background Near‐fatal asthma (NFA) is characterized by severe asthma attacks usually requiring intensive care unit admission. This phenotype of asthma has been studied mainly in acute conditions.


American Journal of Respiratory and Critical Care Medicine | 2015

An Official American Thoracic Society/European Respiratory Society Statement: Research questions in chronic obstructive pulmonary disease

Bartolome R. Celli; Marc Decramer; Jadwiga A. Wedzicha; Kevin C. Wilson; Alvar Agustí; Gerard J. Criner; William MacNee; Barry J. Make; Stephen I. Rennard; Robert A. Stockley; C Vogelmeier; Antonio Anzueto; David H. Au; Peter J. Barnes; Pierre Régis Burgel; Peter M. Calverley; Ciro Casanova; Enrico Clini; Christopher B. Cooper; Ho Coxson; Daniel Dusser; Leonardo M. Fabbri; Bonnie Fahy; Gary T. Ferguson; Andrew Fisher; Monica Fletcher; Maurice Hayot; John R. Hurst; Paul W. Jones; Donald A. Mahler

BACKGROUND Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity, mortality, and resource use worldwide. The goal of this Official American Thoracic Society (ATS)/European Respiratory Society (ERS) Research Statement is to describe evidence related to diagnosis, assessment, and management; identify gaps in knowledge; and make recommendations for future research. It is not intended to provide clinical practice recommendations on COPD diagnosis and management. METHODS Clinicians, researchers, and patient advocates with expertise in COPD were invited to participate. A literature search of Medline was performed, and studies deemed relevant were selected. The search was not a systematic review of the evidence. Existing evidence was appraised and summarized, and then salient knowledge gaps were identified. RESULTS Recommendations for research that addresses important gaps in the evidence in all areas of COPD were formulated via discussion and consensus. CONCLUSIONS Great strides have been made in the diagnosis, assessment, and management of COPD as well as understanding its pathogenesis. Despite this, many important questions remain unanswered. This ATS/ERS Research Statement highlights the types of research that leading clinicians, researchers, and patient advocates believe will have the greatest impact on patient-centered outcomes.


Respiratory Medicine | 1998

Lung function in patients with inflammatory bowel disease

Nikos Tzanakis; Demosthenes Bouros; Maria Samiou; Panagiotis Panagou; John Mouzas; O. Manousos; N.M. Siafakas

Previous studies on baseline pulmonary function testing (PFT) abnormalities in patients with inflammatory bowel disease (IBD) are conflicting because most of them have incorporated patients suffering from both ulcerative colitis (UC) and Crohns disease (CD). The aim of the study is to investigate whether any PFT abnormalities could be detected in a large group of IBD patients and whether there are differences between the two IBD entities. A total of 132 patients, 47 with CD (mean age 35 years) and 85 with UC (mean age 40 years) were studied. Pulmonary function tests (PFTs), lung transfer factor for carbon monoxide (TLCO) were examined and compared with those of 36 healthy controls. No significant difference of mean values of spirometric indices, TLCO and ABG was found between the two groups of patients and controls, or between patients with CD and UC. However, nine (19%) patients with CD and 15 (17.6%) with UC had a reduction in TLCO, a percentage significantly higher than in controls (P < 0.05). The majority of the patients with TLCO reduction were in an active phase of disease (P < 0.05). Our results suggest that there is no difference in routine PFTs between UC and CD patients, as well as between both these groups and normal controls. However, TLCO abnormalities related to the degree of disease activity are found in patients with both UC and CD.


European Respiratory Journal | 2015

An official American Thoracic Society/European Respiratory Society statement: research questions in COPD.

Bartolome R. Celli; Marc Decramer; Jadwiga A. Wedzicha; Kevin C. Wilson; Alvar Agusti; Gerard J. Criner; William MacNee; Barry J. Make; Stephen I. Rennard; Robert A. Stockley; Claus Vogelmeier; Antonio Anzueto; David H. Au; Peter J. Barnes; Pierre Régis Burgel; Peter Calverley; Ciro Casanova; Enrico Clini; Christopher B. Cooper; Harvey O. Coxson; Daniel Dusser; Leonardo M. Fabbri; Bonnie Fahy; Gary T. Ferguson; Andrew J. Fisher; Monica Fletcher; Maurice Hayot; John R. Hurst; Paul W. Jones; Donald A. Mahler

Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity, mortality, and resource use worldwide. The goal of this official American Thoracic Society (ATS)/European Respiratory Society (ERS) research statement is to describe evidence related to diagnosis, assessment and management; identify gaps in knowledge; and make recommendations for future research. It is not intended to provide clinical practice recommendations on COPD diagnosis and management. Clinicians, researchers, and patient advocates with expertise in COPD were invited to participate. A literature search of Medline was performed, and studies deemed relevant were selected. The search was not a systematic review of the evidence. Existing evidence was appraised and summarised, and then salient knowledge gaps were identified. Recommendations for research that addresses important gaps in the evidence in all areas of COPD were formulated via discussion and consensus. Great strides have been made in the diagnosis, assessment and management of COPD, as well as understanding its pathogenesis. Despite this, many important questions remain unanswered. This ATS/ERS research statement highlights the types of research that leading clinicians, researchers, and patient advocates believe will have the greatest impact on patient-centred outcomes. ATS/ERS statement: which types of research will have the greatest future impact on patient-centred outcomes in COPD? http://ow.ly/I54Hb


European Respiratory Journal | 1996

Intrapleural urokinase in the treatment of complicated parapneumonic pleural effusions and empyema

Demosthenes Bouros; Sophia E. Schiza; Nikos Tzanakis; J Drositis; N.M. Siafakas

Intrapleural urokinase has not been evaluated systemically in terms of efficacy, safety, and cost of treatment in a large series of patients with complicated (parapneumonic) pleural effusions (CPE) and pleural empyemas (PE). Furthermore, the optimal dose and duration of treatment is not known. Twenty consecutive patients with multiloculated parapneumonic effusions (13 with CPE and 7 with PE), in whom a single chest tube failed to drain the fluid, were studied prospectively. The age of the patients ranged 15-92 yrs (median 51 yrs). Urokinase was administered intrapleurally, in a low single daily dose of 50,000 U in 100 mL normal saline via the chest tube. Previous intrapleural instillation of 100 mL normal saline failed to promote drainage in all patients. Urokinase enhanced drainage in all patients. Clinical and radiological improvement was noted in all but one patient. The mean (SD) volume of fluid significantly increased in the first 24 h post-urokinase (p<0.001). The number of urokinase instillations ranged 3-7 (median 5). Radiological evaluation showed excellent improvement in 13 of the 20 (65%) patients. Urokinase was well-tolerated in all patients. The clinical course of patients was uneventful at a mean follow-up of 15 months (range 6-30 months) later. Mean total cost of treatment was

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Demosthenes Bouros

Democritus University of Thrace

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