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BMC Pulmonary Medicine

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https://read.qxmd.com/read/30777036/impact-of-leaks-and-ventilation-parameters-on-the-efficacy-of-humidifiers-during-home-ventilation-for-tracheostomized-patients-a-bench-study
#1
Noémie Haziot, Mohamed Ibrahim, Kaixian Zhu, Charles-Philippe Thevenin, Sebastien Hardy, Jésus Gonzalez-Bermejo
BACKGROUND: During invasive ventilation, the upper airway is bypassed and no longer participates in humidification of inspired gases, which is essential to avoid harmful consequences such as endotracheal tube occlusion. In the case of increased air flow, especially in the presence of leaks (intentional or unintentional), the humidification provided by humidifiers may become ineffective. The objective of this bench study was to evaluate the quality of humidification provided by heated humidifiers under various home ventilation conditions...
February 18, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30777035/postpneumonectomy-like-syndrome-due-to-bronchial-carcinoid-a-unique-case-report
#2
Athanasios K Konstantinidis, Vlasios V Vitsas, Konstantinos Tatsis, Thomas Vadivoulis, Apostolos Kittas, Christos Chronis, Vanesa Bellou, Ioannis N Vamvakaris, Rodoula Tringidou, Grigoris K Stratakos
BACKGROUND: Postpneumonectomy-like syndrome is a rare condition resulting from unilateral lung disease with severe lung volume loss leading to excessive mediastinal shift and herniation of the healthy lung into the contralateral hemithorax, mimicking the mediastinal shift observed in postpneumonectomy syndrome after pneumonectomy. We report a unique case of postpneumonectomy-like syndrome caused by an atypical bronchial carcinoid completely occluding the left main bronchus. CASE PRESENTATION: A 25-year-old woman presented with symptoms of chronic exertional dyspnea and productive cough...
February 18, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30767776/atypical-bronchial-carcinoid-with-postobstructive-mycobacterial-infection-case-report-and-review-of-literature
#3
Abdulrahman Hakami, Evita Zwartkruis, Teodora Radonic, Johannes M A Daniels
BACKGROUND: Pulmonary carcinoids are included in the group of neuroendocrine tumors (NET) and derive from pulmonary neuroendocrine cells. The incidence of these tumors is increasing, but disease awareness remains low among clinicians. The synchronous presentation of lung cancer and mycobacterial infection is well known but the combination of pulmonary carcinoid and mycobacterial infection is rare. CASE PRESENTATION: We treated a 45-year-old female who presented with recurrent pneumonia...
February 15, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30767769/aerosol-drug-delivery-to-the-lungs-during-nasal-high-flow-therapy-an-in-vitro-study
#4
Martin Wallin, Patricia Tang, Rachel Yoon Kyung Chang, Mingshi Yang, Warren H Finlay, Hak-Kim Chan
BACKGROUND: Aerosol delivery through a nasal high flow (NHF) system is attractive for clinicians as it allows for simultaneous administration of oxygen and inhalable drugs. However, delivering a fine particle fraction (FPF, particle wt. fraction < 5.0 μm) of drugs into the lungs has been very challenging, with highest value of only 8%. Here, we aim to develop an efficient nose-to-lung delivery system capable of delivering improved quantities (FPF > 16%) of dry powder aerosols to the lungs via an NHF system...
February 15, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30760258/asthma-and-atopy-prevalence-are-not-reduced-among-former-tuberculosis-patients-compared-with-controls-in-lima-peru
#5
Anthony L Byrne, Ben J Marais, Carole D Mitnick, Frances L Garden, Leonid Lecca, Carmen Contreras, Yaninna Yauri, Fanny Garcia, Guy B Marks
BACKGROUND: Although there are theoretical reasons for believing that asthma and atopy may be negatively correlated with tuberculosis, epidemiological studies have had conflicting findings. OBJECTIVE: To determine if people with confirmed tuberculosis were less likely to be atopic and less likely to have atopic disease including asthma compared to those with no previous tuberculosis. METHODS: Patients in Lima, Peru with a prior history of tuberculosis were identified from clinic records in this cohort study...
February 13, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30760244/nk-and-nkt-cells-in-the-diagnosis-of-diffuse-lung-diseases-presenting-with-a-lymphocytic-alveolitis
#6
Oksana Sokhatska, Eva Padrão, Bernardo Sousa-Pinto, Marília Beltrão, Patrícia Caetano Mota, Natália Melo, Luís Delgado, António Morais
BACKGROUND: Diffuse lung diseases (DLD) are characterized by different immunophenotypes in the bronchoalveolar lavage fluid (BALF). We aimed to evaluate the diagnostic value of BALF NK and NKT cell counts of patients with DLD and lymphocytic alveolitis. METHODS: We assessed 202 patients with DLD, who underwent BALF immunophenotyping. Samples were routinely processed by flow cytometry and lymphocyte subsets were compared between patients with sarcoidosis (n = 106), hypersensitivity pneumonitis (HP; n = 53), and other DLDs (n = 43)...
February 13, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30755187/age-distribution-and-seasonality-in-acute-eosinophilic-pneumonia-analysis-using-a-national-inpatient-database
#7
Koshi Ota, Yusuke Sasabuchi, Hiroki Matsui, Taisuke Jo, Kiyohide Fushimi, Hideo Yasunaga
BACKGROUND: Acute eosinophilic pneumonia (AEP) is a rare inflammatory lung disease. Previous studies have shown that most patients with AEP are aged 20 to 40 years, whereas several case studies have included older patients with AEP. These studies also suggested that AEP is more prevalent in summer, but they were limited due to their small sample sizes. We therefore investigated the age distribution and seasonality among patients with AEP using a national inpatient database. METHODS: Using the Japanese Diagnosis Procedure Combination database, we identified patients with a recorded diagnosis of AEP from 1 July 2010 to 31 March 2015...
February 12, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30744616/bronchoscopy-to-assess-patients-with-hemoptysis-which-is-the-optimal-timing
#8
Michele Mondoni, Paolo Carlucci, Giuseppe Cipolla, Alessandro Fois, Stefano Gasparini, Silvia Marani, Stefano Centanni, Giovanni Sotgiu
BACKGROUND: Bronchoscopy plays a key role to diagnose the etiology, to localize the site, and to identify the sources of the bleeding in patients with hemoptysis, but the ideal timing of an endoscopic examination is still unclear. METHODS: We performed a secondary analysis of an observational and multicenter study, aimed at evaluating the epidemiology of hemoptysis in Italy and the diagnostic yield of the most frequently prescribed examinations. The aim of the study was to evaluate whether an early bronchoscopy (i...
February 11, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30744607/ligustrazin-increases-lung-cell-autophagy-and-ameliorates-paraquat-induced-pulmonary-fibrosis-by-inhibiting-pi3k-akt-mtor-and-hedgehog-signalling-via-increasing-mir-193a-expression
#9
Ming-Wei Liu, Mei-Xian Su, Deng-Yun Tang, Li Hao, Xiang-Han Xun, Yun-Qiao Huang
BACKGROUND: Reactive oxygen species (ROS) levels largely determine pulmonary fibrosis. Antioxidants have been found to ameliorate lung fibrosis after long-term paraquat (PQ) exposure. The effects of antioxidants, however, on the signalling pathways involved in PQ-induced lung fibrosis have not yet been investigated sufficiently. Here, we examined the impacts of ligustrazin on lung fibrosis, in particular ROS-related autophagy and pro-fibrotic signalling pathways, using a murine model of PQ-induced lung fibrosis...
February 11, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30744598/prognostic-values-of-the-berlin-definition-criteria-blood-lactate-level-and-fibroproliferative-changes-on-high-resolution-computed-tomography-in-ards-patients
#10
Tetsuro Kamo, Sadatomo Tasaka, Takeshi Suzuki, Takanori Asakura, Shoji Suzuki, Kazuma Yagi, Ho Namkoong, Makoto Ishii, Hiroshi Morisaki, Tomoko Betsuyaku
BACKGROUND: In the Berlin definition, acute respiratory distress syndrome (ARDS) is stratified into three stages according to oxygenation severity at the onset. The relevance between ARDS severity and prognosis varies among published reports and has not been verified, especially in Asian patients. METHODS: In this study, we examined the associations between the Berlin definition criteria and prognosis and clinical parameters, including high-resolution computed tomography (HRCT) scores of fibroproliferative changes of the lungs...
February 11, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30736856/long-term-follow-up-of-self-expandable-metallic-stents-in-benign-tracheobronchial-stenosis-a-retrospective-study
#11
Xiao-Feng Xiong, Li Xu, Li-Li Fan, De-Yun Cheng, Bi-Xia Zheng
BACKGROUND: Self-expandable metallic stents (SEMSs) have enabled a approving management of malignant airway stenosis. However, the long-term efficacy and safety of this treatment in patients with benign airway stricture are unclear. We conducted this study to retrospectively determine the efficacy and long-term outcomes in patients who have undergone SEMS placement for benign tracheobronchial stenosis. METHODS: All patients treated with SEMSs from July 2003 to June 2016 were reviewed for symptomatic response, complications, and long-term outcomes...
February 8, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30736787/pulmonary-artery-pseudoaneurysm-causing-massive-hemoptysis-in-hyperimmunoglobulin-e-syndrome-a-case-report
#12
Aaron Hakim, Isabel S Bazan, Mamadou L Sanogo, Edward P Manning, Jeffrey S Pollak, Geoffrey L Chupp
BACKGROUND: Hyperimmunoglobulin E syndrome (HIES) is a rare primary immunodeficiency disorder defined by high serum immunoglobulin E titers that is associated with recurrent respiratory infections, formation of pneumoatoceles, recurrent skin abscesses, and characteristic dental and skeletal abnormalities. CASE PRESENTATION: We report a case of a 56-year-old male with a history of HIES, cavitary mycetomas, and allergic bronchopulmonary aspergillosis who presented with recurrent massive hemoptysis...
February 8, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30732605/health-related-quality-of-life-varies-in-different-respiratory-disorders-a-multi-case-control-population-based-study
#13
Veronica Cappa, Alessandro Marcon, Gianfranco Di Gennaro, Liliya Chamitava, Lucia Cazzoletti, Cristina Bombieri, Morena Nicolis, Luigi Perbellini, Silvia Sembeni, Roberto de Marco, Francesco Spelta, Marcello Ferrari, Maria Elisabetta Zanolin
BACKGROUND AND OBJECTIVE: Health-related quality of life (HRQL) in respiratory diseases has been generally investigated in clinical settings, focusing on a single disorder. In this study on a general population sample, we assessed the relationship between HRQL and several respiratory diseases studied simultaneously (COPD, current (CA) and past (PA) asthma, allergic (AR) and non-allergic (NAR) rhinitis and chronic bronchitis (CB). METHODS: Controls (n = 328) and cases of NAR (n = 95), AR (n = 163), CB (n = 48), CA (n = 224), PA (n = 126) and COPD (n = 28) were recruited in the centre of Verona in the frame of the Italian multi-case control GEIRD (Gene Environment Interactions in Respiratory Diseases) study; HRQL was measured through the SF-36 questionnaire...
February 7, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30732588/trail-signals-through-the-ubiquitin-ligase-mid1-to-promote-pulmonary-fibrosis
#14
Adam M Collison, Junyao Li, Ana Pereira de Siqueira, Xuejiao Lv, Hamish D Toop, Jonathan C Morris, Malcolm R Starkey, Philip M Hansbro, Jie Zhang, Joerg Mattes
BACKGROUND: Tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) has previously been demonstrated to play a pro-inflammatory role in allergic airways disease and COPD through the upregulation of the E3 ubiquitin ligase MID1 and the subsequent deactivation of protein phosphatase 2A (PP2A). METHODS: Biopsies were taken from eight IPF patients presenting to the Second Affiliated Hospital of Jilin University, China between January 2013 and February 2014 with control samples obtained from resected lung cancers...
February 7, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30727998/severe-thoracic-trauma-caused-left-pneumonectomy-complicated-by-right-traumatic-wet-lung-reversed-by-extracorporeal-membrane-oxygenation-support-a-case-report
#15
Feng Yun Wang, Bin Fang, Zhi Hui Yu, Jing Song Shao, Wei Biao Wen, Li Xin Zhou
BACKGROUND: Double lumen intubation and one-lung ventilation should be applied without delay in cases of traumatic main bronchial rupture. In most cases, when the patients' vital signs have been stabilized, the repair can be performed. However, when one-lung ventilation is complicated by traumatic wet lung, the mortality rate is likely to be much higher. CASE PRESENTATION: In this case, the patient experienced a left main bronchial rupture, bilateral traumatic wet lung, and acute respiratory distress syndrome (ARDS) because of severe thoracic trauma...
February 6, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30727993/cd147-increases-mucus-secretion-induced-by-cigarette-smoke-in-copd
#16
Qiao Yu, Danhui Yang, Xi Chen, Qiong Chen
BACKGROUND: CD147 is expressed in many tissues and is involved in many inflammatory diseases. Emerging evidence suggests that the overproduction of mucus is a malignant factor in chronic obstructive pulmonary disease (COPD), which results in severe airway obstruction and repeated airway infections. However, it is still unclear whether CD147 is involved in mucus production in COPD. METHODS: We determined the expression levels of CD147 and MUC5AC by immunohistochemistry in 42 human lung specimens from three groups (non-smokers without COPD, smokers without COPD and smokers with COPD)...
February 6, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30717786/increased-expression-of-lung-trpv1-trpa1-in-a-cough-model-of-bleomycin-induced-pulmonary-fibrosis-in-guinea-pigs
#17
Yali Guo, Sun Ying, Xuehui Zhao, Jian Liu, Yuguang Wang
BACKGROUND: Chronic cough is a difficult-to-treat comorbidity of idiopathic pulmonary fibrosis (IPF), and significantly impacts on the quality of life of patients with IPF. Transient receptor potential (TRP) channel proteins may play an important role in chronic cough. However, expression of these proteins in lung of IPF is largely unknown. METHODS: Guinea pig model of pulmonary fibrosis was established by single intratracheal delivery of bleomycin. Respiratory ungated micro-CT scans were performed on days 7, 14, 21 and 28 to assess progression of pulmonary fibrosis...
February 4, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30717716/oxygen-desaturation-during-the-6-min-walk-test-as-a-risk-for-osteoporosis-in-non-cystic-fibrosis-bronchiectasis
#18
Hung-Yu Huang, Te-Fang Sheng, Chang-Wei Lin, Ting-Wen Wang, Chun-Yu Lo, Fu-Tsai Chung, Lan-Yan Yang, Yu-Bin Pan, Chun-Hua Wang
BACKGROUND: Osteoporosis is a common comorbidity in non-cystic fibrosis (non-CF) bronchiectasis patients. We determined whether desaturation during 6-min walk test (6MWT) can be a predictor for osteoporosis risk. METHODS: This was a retrospective cross-sectional study. Sixty-six non-CF bronchiectasis patients were enrolled. Lung function, walking distance, the lowest oxygen saturation (SpO2 ), the fall in SpO2 (ΔSpO2 ), and the distance-saturation product (DSP) were determined during the 6MWT...
February 4, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30709387/igg4-related-disease-can-present-as-recurrent-spontaneous-hemothorax-a-case-report
#19
Junping Fan, Ruie Feng, Xiaomeng Hou, Ji Li, Xuefeng Sun, Jinglan Wang, Juhong Shi, Mengzhao Wang, Yan Xu
BACKGROUND: Immunoglobulin G4-related disease (IgG4-RD) encompasses a group of immune-mediated disorders that are gaining increasing recognition. Pulmonary presentations are common, with four types of patterns been described on radiography, including solid nodular, bronchovascular, ground glass opacities, and alveolar interstitial. Pleural thickening and pleural effusion have also been reported. However, there have been no reports of IgG4-RD that presents as spontaneous hemothorax. CASE PRESENTATION: A 61-year-old Chinese woman experienced recurrent right-sided chest pain and transient syncope...
February 1, 2019: BMC Pulmonary Medicine
https://read.qxmd.com/read/30691439/airway-smooth-muscle-as-an-underutilised-biomarker-a-case-report
#20
Joy Sha, Steuart Rorke, David Langton
BACKGROUND: Severe asthma and chronic obstructive pulmonary disease (COPD) can be challenging to manage, particularly when the clinical features may be similar. With the increased availability of advanced therapies for both entities, it is more important than ever to diagnose and phenotype accurately to inform appropriate treatment decisions. This case highlights the use of endobronchial biopsies to allow for histological evaluation of airways disease, and in particular the role of airway smooth muscle mass as an additional biomarker that could facilitate the diagnostic process...
January 28, 2019: BMC Pulmonary Medicine
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