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acute exacerbations of asthma

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https://www.readbyqxmd.com/read/27927840/%C3%AE-blockers-heart-disease-and-copd-current-controversies-and-uncertainties
#1
Jillian G Baker, Robert G Wilcox
Treating people with cardiovascular disease and COPD causes significant clinician anxiety. β-Blockers save lives in people with heart disease, specifically postinfarction and heart failure. COPD and heart disease frequently coexist and people with both disorders have particularly high cardiovascular mortality. There are concerns about giving β-blockers to people with concomitant COPD that include reduced basal lung function, diminished effectiveness of emergency β-agonist treatments, reduced benefit of long-acting β-agonist treatment and difficulty in discriminating between asthma and COPD...
December 7, 2016: Thorax
https://www.readbyqxmd.com/read/27909740/clinical-pharmacokinetics-of-magnesium-sulfate-in-the-treatment-of-children-with-severe-acute-asthma
#2
Joseph E Rower, Xiaoxi Liu, Tian Yu, Michael Mundorff, Catherine M T Sherwin, Michael D Johnson
PURPOSE: Intravenous (IV) magnesium sulfate (MgSO4) is used as adjunct therapy to treat acute asthma exacerbations. Despite its clinical use, there is a limited understanding of the disposition of magnesium in children. METHODS: To explore the pharmacokinetics (PK) of IV MgSO4 in this population, we collected retrospective data from 54 children who received IV MgSO4 for treatment of an acute asthma exacerbation at Primary Children's Hospital in Salt Lake City, UT...
December 2, 2016: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27903593/respiratory-syncytial-virus-infection-detection-and-new-options-for-prevention-and-treatment
#3
REVIEW
Cameron Griffiths, Steven J Drews, David J Marchant
Respiratory syncytial virus (RSV) infection is a significant cause of hospitalization of children in North America and one of the leading causes of death of infants less than 1 year of age worldwide, second only to malaria. Despite its global impact on human health, there are relatively few therapeutic options available to prevent or treat RSV infection. Paradoxically, there is a very large volume of information that is constantly being refined on RSV replication, the mechanisms of RSV-induced pathology, and community transmission...
January 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/27895126/versican-deficiency-significantly-reduces-lung-inflammatory-response-induced-by-polyinosine-polycytidylic-acid-stimulation
#4
Inkyung Kang, Ingrid A Harten, Mary Y Chang, Kathleen R Braun, Alyssa Sheih, Mary P Nivison, Pamela Y Johnson, Gail Workman, Gernot Kaber, Stephen P Evanko, Christina K Chan, Mervyn J Merrilees, Steven F Ziegler, Michael G Kinsella, Charles W Frevert, Thomas N Wight
Viral infection is an exacerbating factor contributing to chronic airway diseases such as asthma via mechanisms which are still unclear. Polyinosine-polycytidylic acid (poly I:C), a toll-like receptor (TLR) 3 agonist used as a mimetic to study viral infection, has been shown to elicit inflammatory responses in lungs and to exacerbate pulmonary allergic reactions in animal models. Previously, we have shown that poly I:C stimulates lung fibroblasts to accumulate an extracellular matrix (ECM), enriched in hyaluronan (HA) and its binding partner versican, which promotes monocyte adhesion...
November 28, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27889330/use-of-biologics-to-treat-acute-exacerbations-and-manage-disease-in-asthma-copd-and-ipf
#5
REVIEW
Lynne A Murray, Chris Grainge, Peter A Wark, Darryl A Knight
A common feature of chronic respiratory disease is the progressive decline in lung function. The decline can be indolent, or it can be accelerated by acute exacerbations, whereby the patient experiences a pronounced worsening of disease symptoms. Moreover, acute exacerbations may also be a marker of insufficient disease management. The underlying cause of an acute exacerbation can be due to insults such as pathogens or environmental pollutants, or the cause can be unknown. For each acute exacerbation, the patient may require medical intervention such as rescue medication, or in more severe cases, hospitalization and ventilation and have an increased risk of death...
November 24, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27888992/il-17-protein-levels-in-both-induced-sputum-and-plasma-are-increased-in-stable-but-not-acute-asthma-individuals-with-obesity
#6
Jian-Hui Chen, Ling Qin, Ying-Ying Shi, Jun-Tao Feng, Yu-Long Zheng, Yu-Feng Wan, Chuan-Qin Xu, Xiao-Mei Yang, Cheng-Ping Hu
BACKGROUND: Obesity worsens asthma control partly through enhanced airway neutrophilia, altered lung mechanics and comorbidities, including obstructive sleep apnea syndrome, gastroesophageal reflux disease and depression. Although controversial, obesity may also cause poorer outcomes in acute asthma. IL-17 is associated with neutrophilic inflammation, steroid resistance and severe asthma, but its importance in the association between asthma and obesity is unknown. OBJECTIVE: To investigate the role of IL-17 in obese asthma in both acute and stable settings...
December 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27881923/predictive-value-of-serum-uric-acid-in-hospitalized-adolescents-and-adults-with-acute-asthma
#7
Nasser Keshar Abdulnaby, Ashraf Othman Sayed, Nehad Mohamed Shalaby
BACKGROUND: High serum uric acid (sUA) is an indicator of oxidative stress and is linked to tissue hypoxia in asthma. The objective of this case series was to investigate the prognostic role of sUA in patients with acute asthma exacerbations and the link between sUA and spirometric lung tests. PATIENTS AND METHODS: This cross-sectional observational study included 120 patients with acute asthma exacerbations and 120 controls, categorized according to peak expiratory flow rate into moderate, and severe and life-threatening asthma...
2016: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/27878470/%C3%AE-2-agonists
#8
Charlotte K Billington, Raymond B Penn, Ian P Hall
History suggests β agonists, the cognate ligand of the β2 adrenoceptor, have been used as bronchodilators for around 5,000 years, and β agonists remain today the frontline treatment for asthma and chronic obstructive pulmonary disease (COPD). The β agonists used clinically today are the products of significant expenditure and over 100 year's intensive research aimed at minimizing side effects and enhancing therapeutic usefulness. The respiratory physician now has a therapeutic toolbox of long acting β agonists to prophylactically manage bronchoconstriction, and short acting β agonists to relieve acute exacerbations...
November 23, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/27865715/time-dependent-severity-change-during-treatment-of-pediatric-patients-hospitalized-for-acute-asthma-exacerbations
#9
Colin G Walsh, Marion R Sills, Donald H Arnold
No abstract text is available yet for this article.
November 16, 2016: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/27862645/association-between-asthma-control-and-asthma-cost-results-from-a-longitudinal-study-in-a-primary-care-setting
#10
Hai V Nguyen, Nivedita V Nadkarni, Usha Sankari, Shweta Mital, Weng K Lye, Ngiap C Tan
BACKGROUND AND OBJECTIVE: Asthma control can be assessed with the Asthma Control Test (ACT) and a score of 20 or higher indicates good asthma control. Patients pay for their consultation and treatment in the fee-for-service primary healthcare system in Singapore. We hypothesized that achieving asthma control would result in lower asthma costs through reduced acute exacerbations, fewer physician consultations and lower lost productivity. The study compared the healthcare costs of patients who achieved asthma control and those with suboptimal asthma control based on ACT scores...
November 10, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27854115/an-investigation-into-respiratory-tract-viruses-in-children-with-acute-lower-respiratory-tract-infection-or-wheezing
#11
Demet Dabaniyasti, Fahriye Eksi, Özlem Keskin, Mehmet Y Özkars, Tekin Karsligil, Iclal Balci
BACKGROUND: This study aimed to determine the frequencies of respiratory tract viruses in patient (acute lower respiratory tract infection (LRTI) or wheezing) and control (history of asthma without symptoms) groups. METHODS: Using multiplex-PCR, respiratory tract viruses were investigated in the respiratory tract specimens from patient and control groups followed in the Pediatric Clinic. RESULTS: The viruses detected in the patient and control groups (p=0...
November 17, 2016: Minerva Pediatrica
https://www.readbyqxmd.com/read/27834496/improving-childcare-staff-management-of-acute-asthma-exacerbation-an-australian-pilot-study
#12
Yien Yien Soo, Kate Helen FitzGerald, Bandana Saini, Vicky Kritikos, John D Brannan, Rebekah Jane Moles
OBJECTIVE This study aimed to evaluate the effectiveness of an asthma first-aid training tool for childcare staff in Australia. The effects of training on both asthma knowledge and skills were assessed. METHODS A pre/post study design was utilised to assess changes in asthma knowledge and asthma first-aid skills in childcare staff before and after an educational intervention. Asthma first-aid skills were assessed from the participant's response to two scenarios in which a child was having a severe exacerbation of asthma...
November 11, 2016: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/27825189/exhaled-nitric-oxide-levels-to-guide-treatment-for-children-with-asthma
#13
REVIEW
Helen L Petsky, Kayleigh M Kew, Anne B Chang
BACKGROUND: Asthma guidelines aim to guide health practitioners to optimise treatment for patients to minimise symptoms, improve or maintain good lung function, and prevent acute exacerbations. The principle of asthma guidelines is based on a step-up or step-down regimen of asthma medications to maximise health using minimum doses. Fractional exhaled nitric oxide (FeNO) is a marker of eosinophilic inflammation and tailoring asthma medications in accordance to airway eosinophilic levels may improve asthma outcomes such as indices of control or reduce exacerbations, or both...
November 9, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27817772/-an-epidemiological-study-on-human-rhinovirus-c-in-hospitalized-children-with-respiratory-tract-infections
#14
Li Li, Wei Ji, Xue-Jun Shao, Jun Xu, Wu-Jun Jiang, Zheng-Rong Chen, Yong-Dong Yan
OBJECTIVE: To investigate the detection rates, epidemical characteristics, and clinical features of human rhinovirus C (HRV-C) in hospitalized children with respiratory tract infections (RTIs) in Suzhou, China. METHODS: A total of 1 702 hospitalized children with RTIs from January to December, 2014 were enrolled, and 1 702 nasopharyngeal aspirate samples were collected from all children. RT-PCR was used to measure HRV mRNA, and quantitative real-time PCR combined with high-resolution melting curve was used to measure HRV-C...
November 2016: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/27817219/current-complications-and-treatment-of-aspirin-exacerbated-respiratory-disease
#15
Kevin A Cook, Donald D Stevenson
Aspirin-exacerbated respiratory disease is defined by the clinical tetrad of aspirin sensitivity, nasal polyps, asthma, and chronic rhinosinusitis. Patients experience acute upper and lower airway reactions with exposure to aspirin and other cyclooxygenase-1 inhibiting medications. However, airway inflammation and disease progression occur even in the absence of exposure to these medications, often leading to aggressive polyp formation and need for systemic corticosteroids to treat exacerbations in asthma and rhinosinusitis...
November 17, 2016: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/27811945/scaffolding-protein-gab1-regulates-myeloid-dendritic-cell-migration-in-allergic-asthma
#16
Yun Zhang, Yun Xu, Shuwan Liu, Xiaohong Guo, Dong Cen, Jiaqi Xu, Heyuan Li, Kaijun Li, Chunlai Zeng, Linrong Lu, Yiting Zhou, Huahao Shen, Hongqiang Cheng, Xue Zhang, Yuehai Ke
Asthma is a common allergic disorder involving a complex interplay among multiple genetic and environmental factors. Recent studies identified genetic variants of human GAB1 as a novel asthma susceptibility factor. However, the functions of Gab1 in lung remain largely unexplored. In this study, we first observed an elevation of Gab1 level in peripheral blood mononuclear cells from asthmatic patients during acute exacerbation compared with convalescence. Mice with a selectively disrupted Gab1 in myeloid dendritic cells (mDCs) considerably attenuated allergic inflammation in experimental models of asthma...
November 2016: Cell Research
https://www.readbyqxmd.com/read/27796793/immune-responses-in-rhinovirus-induced-asthma-exacerbations
#17
REVIEW
John W Steinke, Larry Borish
Acute asthma exacerbations are responsible for urgent care visits and hospitalizations; they interfere with school and work productivity, thereby driving much of the morbidity and mortality associated with asthma. Approximately 80 to 85 % of asthma exacerbations in children, adolescents, and less frequently adults are associated with viral upper respiratory tract viral infections, and rhinovirus (RV) accounts for ∼60-70 % of these virus-associated exacerbations. Evidence suggests that it is not the virus itself but the nature of the immune response to RV that drives this untoward response...
November 2016: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/27794128/association-of-acetaminophen-and-ibuprofen-use-with-wheezing-in-children-with-acute-febrile-illness
#18
Ilan Matok, Arnon Elizur, Amichai Perlman, Shani Ganor, Hagai Levine, Eran Kozer
BACKGROUND: Many infants and children receive acetaminophen and/or ibuprofen during febrile illness. Previously, some studies have linked acetaminophen and ibuprofen use to wheezing and exacerbation of asthma symptoms in infants and children. OBJECTIVE: To assess whether acetaminophen or ibuprofen use are associated with wheezing in children presenting to the emergency department (ED) with febrile illness. METHODS: This was a cross-sectional study of children who presented with fever to the pediatric ED between 2009 and 2013...
October 27, 2016: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/27793870/takotsubo-cardiomyopathy-with-use-of-salbutamol-nebulisation-and-aminophylline-infusion-in-a-patient-with-acute-asthma-exacerbation
#19
Yousuf Hasan Khwaja, Javed Majid Tai
Takotsubo cardiomyopathy, apical ballooning syndrome or stress-induced cardiomyopathy is characterised by transient left ventricular dysfunction, mimicking myocardial infarction in the absence of obstructive coronary artery disease or acute plaque rupture on coronary angiography. The exact mechanism of myocardial dysfunction in Takotsubo cardiomyopathy is unknown; however, due to its association with physical and emotional stress, it is postulated that catecholamines play a central role in its pathogenesis...
October 28, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27790333/a-multi-strain-synbiotic-may-reduce-viral-respiratory-infections-in-asthmatic-children-a-randomized-controlled-trial
#20
Hamid Ahanchian, Seyed Ali Jafari, Elham Ansari, Toktam Ganji, Mohammad Ali Kiani, Maryam Khalesi, Tooba Momen, Hamidreza Kianifar
BACKGROUND AND OBJECTIVE: Asthma is a growing problem worldwide. Acute exacerbations impose considerable morbidity, mortality, and increased cost. Viral respiratory infections are the most common cause (80-85%) of pediatric asthma exacerbations and admissions to the hospital. The aim of this study was to determine the effect of a new synbiotic Lactocare® on viral respiratory infections and asthma exacerbations in asthmatic children. METHODS: In this double blind, placebo-controlled, randomized clinical trial, 72 children with mild persistent asthma, aged between 6 and 12 years, were randomized to receive either Lactocare®, a Synbiotic containing 1 billion CFU/Capsule of Lactobacillus casei, Lactobacillus rhamnosus, Streptococcus thermophilus, Bifidobacterium breve, Lactobacillus acidophilus, Bifidobacterium infantis, Lactobacillus bulgaricus, and Fructooligosacharide (Zist Takhmir, Tehran, Iran) or placebo daily for 60 days...
September 2016: Electronic Physician
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