Publications by authors named "Thibaud Soumagne"

Background: The routine use of CT imaging and lung cancer screening has increased the incidence of peripheral pulmonary lesions (PPLs). Sampling may be needed for some nodules. Many new technologies are available to improve the diagnostic performance of bronchoscopy for the sampling of PPLs, but few comparative trials exist.

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Background: Dysfunctional breathing (DB) is common in severe asthma and is associated with poor asthma control. Diagnosing DB remains challenging owing to the lack of a gold standard.

Objective: To investigate the characteristics of patients with severe asthma identified with DB using 2 distinct diagnostic modalities: the Nijmegen Questionnaire (NQ) combined with the hyperventilation provocation test (HVPT) and cardiopulmonary exercise testing (CPET).

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: Cryoglobulinemia (CG) syndrome is a heterogeneous condition characterized by the presence of cryoglobulins in serum, often leading to vasculitis with protean clinical manifestations. Understanding the presentation of cryoglobulinemia-related symptoms based on cryoprecipitate levels, GC type, and severity at diagnosis is essential for effective management. Hence, this study aimed to provide a comprehensive analysis of patients with positive cryoglobulin detection to investigate these aspects.

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Article Synopsis
  • A study found that about 21.9% of patients hospitalized with severe COPD exacerbations were undiagnosed, indicating a consistent issue over the years 2017-2022.
  • Factors linked to underdiagnosis included a higher forced expiratory volume (FEV) and being female, suggesting these groups need more attention in diagnosis efforts.
  • Importantly, although undiagnosed patients had lower rates of rehospitalization and mortality, those who did have exacerbations faced higher mortality correlated with age and comorbidity, underscoring the importance of proper diagnosis and treatment.
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Background: Acute exacerbations of COPD (AECOPD) are common and significantly contribute to mortality in patients with COPD. Prognostic scores can assist clinicians in making tailored decisions to manage AECOPD. In the current study, we therefore aimed to evaluate the performance of the Noninvasive Ventilation Outcomes (NIVO) score, originally designed to assess in-ICU mortality, in predicting 1 year mortality and NIV failure in AECOPD.

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  • The investigation of peripheral pulmonary lesions (PPLs) is complex, and an international survey was conducted to assess how interventional pulmonologists (IPs) are currently handling these cases.
  • The survey received responses from 312 IPs across Europe, North America, and Asia, highlighting that many perform over 100 endoscopic procedures annually, with common practices including the use of rapid on-site evaluation and a variety of techniques such as radial EBUS and fluoroscopy.
  • Significant differences exist in the use of advanced modalities like robotic bronchoscopy and cone-beam CT, primarily utilized in the USA, while half of the IPs without access to endoscopic treatments intend to acquire them in the near future.
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  • Forced vital capacity (FVC) and lung transfer of carbon monoxide (TLCO) are both important tests for measuring how bad a lung disease called idiopathic pulmonary fibrosis (IPF) is, but TLCO is better at showing the disease's severity.
  • * In a study of 430 IPF patients, many with "normal" FVC actually had "abnormal" TLCO, meaning FVC alone might not tell the whole story about lung health.
  • * The research found that most patients with a decline in TLCO also had a decline in FVC, but the opposite was not true, suggesting TLCO should be given more attention in monitoring IPF.
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Only a few therapies have been shown to prolong survival in specific patients with COPD. In recent years, the IMPACT and the ETHOS trials suggested that triple therapy (a combination of inhaled corticosteroid (ICS), long-acting muscarinic antagonist (LAMA) and long-acting β-agonist (LABA) given in a single inhaler) may reduce mortality compared with dual bronchodilation. These results need however to be interpreted with caution.

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Transbronchial cryobiopsy (TBCB) for the diagnosis of interstitial lung disease (ILD) has shown promising results, but prospective studies with matched surgical lung biopsy (SLB) have yielded conflicting results. We aimed to assess within- and between-center diagnostic agreement between TBCB and SLB at both the histopathologic and multidisciplinary discussion (MDD) levels in patients with diffuse ILD. In a multicenter prospective study, we performed matched TBCB and SLB in patients referred for SLB.

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Small airway remodeling (SAR) is a key phenomenon of airflow obstruction in smokers, leading to chronic obstructive pulmonary disease (COPD). SAR results in an increased thickness of small airway walls, with a combination of peribronchiolar fibrosis with increased fibrous tissue and accumulation of mesenchymal and epithelial cells. SAR pathogenesis is still unclear but recent data suggest that alterations in telomerase activity could represent a possible underlying mechanism of SAR.

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Introduction: Several studies in COPD have shown a significant and early increase in the risk of cardiovascular mortality attributable to inhaled bronchodilators including long acting β2 agonists (LABAs) and muscarinic antagonists (LAMAs). Cardiac autonomic system impairment may be a potential mechanism involved.

Methods: We performed a phase 4, investigator-initiated, prospective, randomized, blinded, cross-over trial (LAB-Card trial - NCT02872090) to evaluate the effect of two LAMAs and one LABA on the cardiac autonomic system in patients with COPD by using three major assessment approaches: heart rate variability (HRV, a predictor of cardiovascular death), baroreflex sensitivity (BRS) and autonomic function (tilt test).

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Rationale: Short-term oxygen therapy (STOT) is often prescribed to allow patients with chronic obstructive pulmonary disease (COPD) to be discharged safely from hospital following an acute illness. This practice is widely accepted without being based on evidence.

Purpose: Our objective was to describe the characteristics and outcomes of patients with COPD who received STOT.

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Background: Bronchoscopy is a safe procedure which is frequently performed for the investigation of respiratory diseases. Current guidelines recommend to delay bronchoscopy for 4-6 weeks after acute coronary syndrome (ACS), as this period is theoretically considered at risk for new onset of ACS. We therefore aimed to evaluate the safety and the tolerance of bronchoscopy in patients with ACS (≤30 days) and to compare outcomes with matched controls.

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Introduction: Subglottic stenosis (SGS) is a rare condition that results from progressive narrowing of the upper airways. Outcomes and treatment options depend on the benign or complex nature of the stenosis. Treatment options for SGS include surgery and endoscopic techniques.

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Article Synopsis
  • - Erdheim-Chester disease (ECD) is a rare condition marked by specific histological features and often involves mutations in the MAP-kinase pathway gene found in CD14 monocytes.
  • - Monocytes, which are key white blood cells, have various subsets, but only "classical monocytes" can develop into essential immune cells like macrophages and dendritic cells, crucial for understanding ECD's development.
  • - Research showed that during severe ECD cases, an increase in classical monocytes and a decrease in non-classical monocytes were related to disease activity, suggesting that the distribution of monocyte types may serve as a useful marker for monitoring ECD.
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Introduction: is an emerging Gram-negative MDR bacteria. In patients with chronic obstructive pulmonary disease (COPD), it is mostly found in those with severe exacerbation of COPD requiring mechanical ventilation. The significance of when detected in the sputum of ambulatory patients with COPD is uncertain.

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  • The study investigates the inflammatory response in patients with chronic obstructive pulmonary disease (COPD) linked to organic dust exposure (OD-COPD) compared to those with tobacco-related COPD (T-COPD) or both.
  • It evaluates the distribution of immune cells and levels of specific cytokines in blood samples, noting significant differences between groups, particularly lower NK and CD8+ T cells in OD-COPD.
  • The findings suggest OD-COPD has a distinct inflammatory profile characterized by higher type 2 immunity cytokines and different responses to immune stimulation compared to T-COPD.
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Background: Previous studies reporting the causes of death in patients with severe COVID-19 have provided conflicting results. The objective of this study was to describe the causes and timing of death in patients with severe COVID-19 admitted to the intensive care unit (ICU).

Methods: We performed a retrospective study in eight ICUs across seven French hospitals.

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Although being a potential major source of infection in extracorporeal membrane oxygenation (ECMO) patients, data regarding cannula-related infections (CRI) remain scarce. We therefore aimed at describing the epidemiology of CRI among critically ill patients supported by ECMO. Between October 2017 and November 2019, adult patients supported by either venoarterial (VA), venopulmonary arterial, or venovenous (VV) ECMO for more than 24 hours were prospectively enrolled.

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