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acute exacerbations of asthma

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https://www.readbyqxmd.com/read/28227330/changes-in-inhaler-inhalation-acoustic-features-during-induced-bronchoconstriction-a-pilot-study
#1
Thomas A McCartan, Terence E Taylor, Imran Sulaiman, Richard W Costello, Richard B Reilly, Thomas A McCartan, Terence E Taylor, Imran Sulaiman, Richard W Costello, Richard B Reilly, Richard B Reilly, Thomas A McCartan, Terence E Taylor, Imran Sulaiman, Richard W Costello
Asthma is a chronic respiratory disease affecting millions of people worldwide, and is consequently a major issue for global health. Exacerbations are acute events involving the worsening of asthma's primary respiratory symptoms and are a major cause of morbidity in asthma patients, largely due to the unpredictability of their onset. This study aimed to investigate the relationship between changes in acoustic features of inhaler inhalations and changes in forced expiratory volume in one second (FEV1) that occur during a simulated exacerbation, a bronchial challenge test (BCT)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28216104/high-flow-nasal-cannula-therapy-versus-non-invasive-ventilation-in-children-with-severe-acute-asthma-exacerbation-an-observational-cohort-study
#2
J Pilar, V Modesto I Alapont, Y M Lopez-Fernandez, O Lopez-Macias, D Garcia-Urabayen, I Amores-Hernandez
INTRODUCTION: The present study describes our experience with the high-flow humidified nasal cannula (HFNC) versus non-invasive ventilation (NIV) in children with severe acute asthma exacerbation (SA). METHODS: An observational study of a retrospective cohort of 42 children with SA admitted to a Pediatric Intensive Care Unit (PICU) for non-invasive respiratory support was made. The primary outcome measure was failure of initial respiratory support (need to escalate from HFNC to NIV or from NIV to invasive ventilation)...
February 16, 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/28214106/multicenter-study-of-cigarette-smoking-among-adults-with-asthma-exacerbations-in-the-emergency-department-2011-2012
#3
Robert A Silverman, Kohei Hasegawa, Daniel J Egan, Kirk A Stiffler, Ashley F Sullivan, Carlos A Camargo
INTRODUCTION: Previous studies demonstrated a high prevalence of cigarette smoking in patients presenting to the emergency department (ED) with acute asthma. Despite the clinical and public health importance, there have been no recent multicenter efforts to characterize this patient population. We aimed to update the prevalence of cigarette smoking among ED patients with asthma exacerbations. METHODS: Multicenter chart review study of 48 EDs across 23 US states...
February 7, 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28212153/new-therapies-for-the-prevention-and-treatment-of-exacerbations-of-bronchiectasis
#4
Hani Abo-Leyah, James D Chalmers
PURPOSE OF REVIEW: Exacerbations of bronchiectasis have a major impact on quality of life, healthcare costs, and long-term risk of complications. Preventing exacerbations is one of the major goals of treatment. Bronchiectasis is increasingly recognized and the impact of bronchiectasis exacerbations on daily clinical practice is also increasing. RECENT FINDINGS: Preventing bronchiectasis exacerbations are dependent on appropriate risk assessment, identifying the patients at highest risk to rationally target preventive therapies...
February 16, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28202114/-association-between-brain-derived-neurotrophic-factor-and-severity-of-asthma-in-children
#5
Shuai Feng, Bo Chen, Xiao-Wen Yin, Fang-Jun Li
OBJECTIVE: To investigate the association between the serum level of brain-derived neurotrophic factor (BDNF) and the severity of asthma in children. METHODS: A total of 60 children with acute exacerbation of asthma were enrolled and divided according to the severity of the disease into mild group (n=18), moderate group (n=25), and severe group (n=17). Sixty healthy children were enrolled as controls. ELISA was used to measure the serum BDNF level in each group and the association between serum BDNF level and the severity of asthma was analyzed...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28196638/japanese-guidelines-for-adult-asthma-2017
#6
REVIEW
Masakazu Ichinose, Hisatoshi Sugiura, Hiroyuki Nagase, Masao Yamaguchi, Hiromasa Inoue, Hironori Sagara, Jun Tamaoki, Yuji Tohda, Mitsuru Munakata, Kohei Yamauchi, Ken Ohta
Adult bronchial asthma is characterized by chronic airway inflammation, and presents clinically with variable airway narrowing (wheezes and dyspnea) and cough. Long-standing asthma induces airway remodeling, leading to intractable asthma. The number of patients with asthma has increased; however, the number of patients who die of asthma has decreased (1.2 per 100,000 patients in 2015). The goal of asthma treatment is to enable patients with asthma to attain normal pulmonary function and lead a normal life, without any symptoms...
February 11, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28196623/health-care-utilization-and-direct-costs-in-mild-moderate-and-severe-adult-asthma-a-descriptive-study-using-the-2014-south-korean-health-insurance-database
#7
Yoo Ju Lee, Sun-Hong Kwon, Sung-Hyun Hong, Jin Hyun Nam, Hyun Jin Song, Jong Seop Lee, Eui-Kyung Lee, Ju-Young Shin
PURPOSE: Although asthma exacerbation comprises a large burden of the total asthma-related costs, few studies have examined the frequency and cost of acute exacerbation according to asthma severity. This study investigated asthma-related health care utilization and costs according to the severity of asthma. METHODS: We conducted a descriptive study using the national health insurance claims database between January 1 and December 31, 2014. We included adult patients with asthma (18 years of age and older) who had ≥2 claims with for an asthma diagnosis and were prescribed ≥1 asthma medications...
February 16, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28176972/factors-associated-with-relapse-in-adult-patients-discharged-from-the-emergency-department-following-acute-asthma-a-systematic-review
#8
Jesse Hill, Nicholas Arrotta, Cristina Villa-Roel, Liz Dennett, Brian H Rowe
A significant proportion of patients discharged from the emergency department (ED) with asthma exacerbations will relapse within 4 weeks. This systematic review summarises the evidence regarding relapses and factors associated with relapse in adult patients discharged from EDs after being treated for acute asthma. Following a registered protocol, comprehensive literature searches were conducted. Studies tracking outcomes for adults after ED management and discharge were included if they involved adjusted analyses...
2017: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/28159238/in-vitro-effects-of-tamoxifen-on-equine-neutrophils
#9
C Borlone, N Morales, C Henriquez, H Folch, C Olave, J Sarmiento, B Uberti, G Moran
Neutrophils participate in innate immunity as the first line of host defense against microorganisms. However, exacerbated neutrophil activity can be harmful to surrounding tissues; this is important in a range of diseases, including allergic asthma and chronic obstructive pulmonary disease in humans, and equine asthma (also known as recurrent airway obstruction (RAO). Tamoxifen (TX) is a non-steroidal estrogen receptor modulator with effects on cell growth and survival. Previous preliminary studies showed that TX treatment in horses with induced acute pulmonary inflammation promoted early apoptosis of blood and BALF neutrophils, reduction of BALF neutrophils, and improvement in animals' clinical status...
February 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28149573/current-situation-of-asthma-copd-overlap-syndrome-acos-in-chinese-patients-older-than-40-years-with-airflow-limitation-rationale-and-design-for-a-multicenter-cross-sectional-trial-study-protocol
#10
Jian Kang, Wanzhen Yao, Baiqiang Cai, Ping Chen, Xia Ling, Hongyan Shang
BACKGROUND: Asthma and chronic obstructive pulmonary disease (COPD) are the frequently occurring chronic airway diseases, and the overlapping syndrome observed in the majority of patients has been recently defined as asthma-COPD overlap syndrome (ACOS) by the Global Initiative for Chronic Obstructive Lung (GOLD, 2014) and Global initiative for Asthma (GINA, 2015). The proportion, features, and clinical practice of ACOS still remain elusive in China. We are conducting this multicenter, cross-sectional, observational study (NCT02600221) to investigate the distributions of chronic obstructive diseases in patients >40 years of age with chronic airflow limitation in China along with determination of the main clinical practice and features of these diseases...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28144025/case-report-of-s1q3t3-electrocardiographic-abnormality-in-a-pregnant-asthmatic-patient-during-acute-bronchospasm
#11
Hafiza Arshad, Rana Rahel Khan, Misbahuddin Khaja
BACKGROUND Asthma is the most common chronic pulmonary disease during pregnancy. Several previous reports have documented reversible electrocardiographic changes during severe acute asthma attacks, including tachycardia, P pulmonale, right bundle branch block, right axis deviation, and ST segment and T wave abnormalities. CASE REPORT We present the case of a pregnant patient with asthma exacerbation in which acute bronchospasm caused S1Q3T3 abnormality on an electrocardiogram (ECG). The complete workup of ECG findings of S1Q3T3 was negative and correlated with bronchospasm...
February 1, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28139368/noninvasive-ventilation-for-acute-exacerbations-of-asthma-a-systematic-review-of-the-literature
#12
REVIEW
Elyce Green, Paras Jain, Maree Bernoth
BACKGROUND: Asthma is a chronic disease characterised by reversible airway obstruction caused by bronchospasm, mucous and oedema. People with asthma commonly experience acute exacerbations of their disease requiring hospitalisation and subsequent utilisation of economic and healthcare resources. Noninvasive ventilation has been suggested as a treatment for acute exacerbations of asthma due to its ability to provide airway stenting, optimal oxygen delivery and decreased work of breathing...
January 27, 2017: Australian Critical Care: Official Journal of the Confederation of Australian Critical Care Nurses
https://www.readbyqxmd.com/read/28137533/traditional-chinese-medicine-zheng-identification-of-bronchial-asthma-clinical-investigation-of-2500-adult-cases
#13
Zhiwan Wang, Jiansheng Li, Yang Xie, Xueqing Yu, Zhaowang Zhang
OBJECTIVES: This study aims to employ more comprehensive approaches to analyze the primary and secondary symptoms of clinical common TCM ZHENG of bronchial asthma according to the clinical investigation of 2500 adult cases. METTHODS: Patients met the inclusion criteria were surveyed by associate chief physician or chief physician through the TCM Clinical investigation questionnaire containing general demographic information, signs and symptoms, tongue and pulse conditions...
February 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28137499/association-of-interleukin-25-levels-with-development-of-aspirin-induced-respiratory-diseases
#14
Jong-Uk Lee, Hun Soo Chang, Hyeon Ju Lee, Da-Jeong Bae, Ji-Hye Son, Jong-Sook Park, Jae Sung Choi, Hun Gyu Hwang, Choon-Sik Park
BACKGROUND: Aspirin-exacerbated respiratory diseases (AERD) are caused by ingestion of non-steroidal anti-inflammatory drugs and are characterized by acute bronchospasms and marked infiltration of eosinophils, the latter being attributable to altered synthesis of cysteinyl leukotrienes (LT) and prostaglandins (PG). Recently, the innate Th2 response is revealed to induce eosinophil infiltration in allergic inflammation, however the role of the innate Th2 response has not been studies in AERD...
February 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28137494/characteristics-associated-with-clinical-severity-and-inflammatory-phenotype-of-naturally-occurring-virus-induced-exacerbations-of-asthma-in-adults
#15
Asger Bjerregaard, Ingrid A Laing, Nadia Poulsen, Vibeke Backer, Asger Sverrild, Markus Fally, Siew-Kim Khoo, Lucy Barrett, Svetlana Baltic, Philip J Thompson, Glenys Chidlow, Chisha Sikazwe, David W Smith, Yury A Bochkov, Peter Le Souëf, Celeste Porsbjerg
BACKGROUND: In experimental studies viral infections have been shown to induce type 2 inflammation in asthmatics, but whether this is a feature of naturally occurring virus-induced asthma exacerbations is unknown. Thymic stromal lymphopoietin (TSLP) released from the airway epithelium in response to damage, has been suggested as a link between viral infection and type 2 inflammation, but the role of TSLP in asthma exacerbations is unknown. OBJECTIVE: To assess whether type 2 inflammation, as measured by sputum eosinophils and fractional exhaled nitric oxide (FeNO), is a feature of naturally occurring virus-induced exacerbations of asthma and whether TSLP is associated with this type 2 inflammation...
February 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28137226/management-of-status-asthmaticus-in-children
#16
Kam-Lun E Hon, Alexander K C Leung
BACKGROUND: Status asthmaticus is an acute exacerbation of asthma that is persistent and intractable and remains unresponsive to initial treatment with bronchodilators and systemic corticosteroids and that can result in hypoxemia, hypercarbia, and secondary respiratory failure. METHOD: We reviewed treatment and recent patents on management of status asthmaticus. CONCLUSIONS: Supplemental oxygen should be given to maintain an oxygen saturation of ≥92% in room air...
30, 2017: Recent Patents on Inflammation & Allergy Drug Discovery
https://www.readbyqxmd.com/read/28132404/right-ventricular-function-during-acute-exacerbation-of-severe-equine-asthma
#17
A Decloedt, H Borowicz, M Slowikowska, K Chiers, G van Loon, A Niedzwiedz
BACKGROUND: Pulmonary hypertension has been described in horses with severe equine asthma but its effect on the right ventricle has not been fully elucidated. OBJECTIVES: To evaluate right ventricular structure and function after a one-week period of pulmonary hypertension secondary to acute exacerbation of severe equine asthma. STUDY DESIGN: Prospective study. METHODS: A clinical episode of severe equine asthma was induced experimentally in six susceptible horses...
January 28, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28131319/review-placental-adaptations-to-the-presence-of-maternal-asthma-during-pregnancy
#18
REVIEW
A S Meakin, Z Saif, A R Jones, P F Valenzula Aviles, V L Clifton
Asthma is a highly prevalent chronic medical condition affecting an estimated 12% of pregnant, women each year, with prevalence of asthma greatest (up to 16%) among the socially disadvantaged. Maternal asthma is associated with significant perinatal morbidity and mortality including preterm births, neonatal hospitalisations and low birthweight outcomes each year. We have identified that the placenta adapts to the presence of chronic, maternal asthma during pregnancy in a sex specific manner that may confer sex differences in fetal outcome...
January 21, 2017: Placenta
https://www.readbyqxmd.com/read/28129896/inflammasomes-in-the-lung
#19
James W Pinkerton, Richard Y Kim, Avril A B Robertson, Jeremy A Hirota, Lisa G Wood, Darryl A Knight, Matthew A Cooper, Luke A J O'Neill, Jay C Horvat, Philip M Hansbro
Innate immune responses act as first line defences upon exposure to potentially noxious stimuli. The innate immune system has evolved numerous intracellular and extracellular receptors that undertake surveillance for potentially damaging particulates. Inflammasomes are intracellular innate immune multiprotein complexes that form and are activated following interaction with these stimuli. Inflammasome activation leads to the cleavage of pro-IL-1β and release of the pro-inflammatory cytokine, IL-1β, which initiates acute phase pro-inflammatory responses, and other responses are also involved (IL-18, pyroptosis)...
January 24, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28125291/epstein-barr-virus-induced-gene-2-ebi2-mediates-allergen-induced-leukocyte-migration-into-airways
#20
Zhong-Jian Shen, Jie Hu, Venkatesh Kashi, Elizabeth A Kelly, Loren C Denlinger, Kevin Garza, David Russell, Nizar N Jarjour, James S Malter
Background Leukocyte recruitment to sites of allergic inflammation depends on the local production of priming cytokines, chemokines, and potentially other mediators as well. Previously, we showed that eosinophils (Eos) express numerous orphan G-protein coupled receptors (GPRs) including EBI2. Despite its contribution to inflammatory diseases, the role of EBI2 in pulmonary eosinophilia is unknown. Objectives To determine whether oxysterol ligands for EBI2 are increased in asthma exacerbation and if, or how they promote eosinophil pulmonary migration...
January 26, 2017: American Journal of Respiratory and Critical Care Medicine
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