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viral bronchiolitis

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https://www.readbyqxmd.com/read/29321255/multisite-emergency-department-inpatient-collaborative-to-reduce-unnecessary-bronchiolitis-care
#1
Grant M Mussman, Michele Lossius, Faiza Wasif, Jeffrey Bennett, Kristin A Shadman, Susan C Walley, Lauren Destino, Elizabeth Nichols, Shawn L Ralston
BACKGROUND AND OBJECTIVES: There is high variation in the care of acute viral bronchiolitis. We sought to promote collaboration between emergency department (ED) and inpatient (IP) units with the goal of reducing unnecessary testing and treatment. METHODS: Multisite collaborative with improvement teams co-led by ED and IP physicians and a 1-year period of active participation. The intervention consisted of a multicomponent change package, regular webinars, and optional coaching...
January 10, 2018: Pediatrics
https://www.readbyqxmd.com/read/29298247/the-effect-of-early-knowledge-of-respiratory-syncytial-virus-positivity-on-medical-decision-making-and-throughput-time-within-the-pediatric-emergency-department
#2
Jessica Schnell, Lisa Schroeder, Kelly Sinclair, Lina Patel, Denise Dowd
OBJECTIVE: The aim of this study was to evaluate whether early knowledge of respiratory syncytial virus (RSV) positivity by rapid triage-based testing protocol improved emergency department (ED) throughput time and decreased ED ancillary testing and antibiotic administration. METHODS: A retrospective cohort study was performed of ED patients aged 2 to 12 months, presenting November 1 to March 31 for the years 2008-2013. Included patients presented with fever and upper respiratory tract symptoms...
January 2, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29273643/plasmacytoid-dendritic-cells-protect-from-viral-bronchiolitis-and-asthma-through-semaphorin-4a-mediated-t-reg-expansion
#3
Jason P Lynch, Rhiannon B Werder, Zhixuan Loh, Md Al Amin Sikder, Bodie Curren, Vivian Zhang, Matthew J Rogers, Katie Lane, Jennifer Simpson, Stuart B Mazzone, Kirsten Spann, John Hayball, Kerrilyn Diener, Mark L Everard, Christopher C Blyth, Christian Forstner, Paul G Dennis, Nida Murtaza, Mark Morrison, Páraic Ó Cuív, Ping Zhang, Ashraful Haque, Geoffrey R Hill, Peter D Sly, John W Upham, Simon Phipps
Respiratory syncytial virus-bronchiolitis is a major independent risk factor for subsequent asthma, but the causal mechanisms remain obscure. We identified that transient plasmacytoid dendritic cell (pDC) depletion during primary Pneumovirus infection alone predisposed to severe bronchiolitis in early life and subsequent asthma in later life after reinfection. pDC depletion ablated interferon production and increased viral load; however, the heightened immunopathology and susceptibility to subsequent asthma stemmed from a failure to expand functional neuropilin-1+ regulatory T (T reg) cells in the absence of pDC-derived semaphorin 4a (Sema4a)...
December 22, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29273069/single-walled-carbon-nanotubes-modulate-pulmonary-immune-responses-and-increase-pandemic-influenza-a-virus-titers-in-mice
#4
Hao Chen, Xiao Zheng, Justine Nicholas, Sara T Humes, Julia C Loeb, Sarah E Robinson, Joseph H Bisesi, Dipesh Das, Navid B Saleh, William L Castleman, John A Lednicky, Tara Sabo-Attwood
BACKGROUND: Numerous toxicological studies have focused on injury caused by exposure to single types of nanoparticles, but few have investigated how such exposures impact a host's immune response to pathogen challenge. Few studies have shown that nanoparticles can alter a host's response to pathogens (chiefly bacteria) but there is even less knowledge of the impact of such particles on viral infections. In this study, we performed experiments to investigate if exposure of mice to single-walled carbon nanotubes (SWCNT) alters immune mechanisms and viral titers following subsequent influenza A virus (IAV) infection...
December 22, 2017: Virology Journal
https://www.readbyqxmd.com/read/29260375/changing-characteristics-of-hospital-admissions-but-not-the-children-admitted-a-whole-population-study-between-2000-and-2013
#5
Maryam Al-Mahtot, Rebecca Barwise-Munro, Philip Wilson, Steve Turner
There are increasing numbers of emergency medical paediatric admissions. Our hypothesis was that characteristics of children and details of their emergency admissions are also changing over time. Details of emergency admissions in Scotland 2000-2013 were analysed. There were 574,403 emergency admissions, median age 2.3 years. The age distribution, proportion of boys and socioeconomic status of children admitted were essentially unchanged. Emergency admissions rose by 49% from 36/1000 children per annum to 54/1000 between 2000 and 2013...
December 19, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29250560/pulmonary-susceptibility-of-neonates-to-respiratory-syncytial-virus-infection-a-problem-of-innate-immunity
#6
REVIEW
Carole Drajac, Daphné Laubreton, Sabine Riffault, Delphyne Descamps
Human respiratory syncytial virus (RSV) is a common and highly contagious viral agent responsible for acute lower respiratory infection in infants. This pathology characterized by mucus hypersecretion and a disturbed T cell immune response is one of the major causes of infant hospitalization for severe bronchiolitis. Although different risk factors are associated with acute RSV bronchiolitis, the immunological factors contributing to the susceptibility of RSV infection in infants are not clearly elucidated...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/29248322/-can-a-simple-lung-ultrasound-score-predict-length-of-ventilation-for-infants-with-severe-acute-viral-bronchiolitis
#7
M Taveira, N Yousef, J Miatello, C Roy, C Claude, B Boutillier, C Dubois, A-F Pierre, P Tissières, P Durand
BACKGROUND: Lung ultrasound (LU) is a bedside point-of-care technique in critical care and emergency medicine. LU is quick and non-irradiating, and provides accurate diagnostic information when compared with chest radiographs. Specific LU signs have been described for bronchiolitis. This study aimed to evaluate the correlation between severity of LU-diagnosed lung lesions, using a quantitative LU score, and the length of non-invasive ventilation (LOV) for infants diagnosed with severe viral bronchiolitis...
December 13, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/29230219/functional-impairment-of-mononuclear-phagocyte-system-by-the-human-respiratory-syncytial-virus
#8
REVIEW
Karen Bohmwald, Janyra A Espinoza, Raúl A Pulgar, Evelyn L Jara, Alexis M Kalergis
The mononuclear phagocyte system (MPS) comprises of monocytes, macrophages (MΦ), and dendritic cells (DCs). MPS is part of the first line of immune defense against a wide range of pathogens, including viruses, such as the human respiratory syncytial virus (hRSV). The hRSV is an enveloped virus that belongs to the Pneumoviridae family, Orthopneumovirus genus. This virus is the main etiological agent causing severe acute lower respiratory tract infection, especially in infants, children and the elderly. Human RSV can cause bronchiolitis and pneumonia and it has also been implicated in the development of recurrent wheezing and asthma...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29227860/respiratory-syncytial-virus-in-brazilian-infants-ten-years-two-cohorts
#9
Elinara Wollmeister, Alfonso Eduardo Alvarez, Juliana Cristina Santiago Bastos, Fernando Augusto Lima Marson, José Dirceu Ribeiro, Emílio Carlos Elias Baracat, Clarice Weis Arns, Adriana Gut Lopes Riccetto
BACKGROUND: Each year, a considerable amount of children will experience at least one episode of acute viral bronchiolitis (AVB) during their first year of life. About 10% of them will be hospitalized, with significant physical and economic burdens. OBJECTIVES: To compare two cohorts of infants with AVB, from same region, in a ten-year interval, regarding epidemiologic factors and viral etiology. STUDY DESIGN: Cohorts: 142 (2004) and 172 (2014) infants at ages zero to 12 months; clinical diagnosis of AVB; medical care in hospital and genetic screening of nasopharyngeal secretion for respiratory viruses...
December 6, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29226974/acute-bronchiolitis-influence-of-viral-co-infection-in-infants-hospitalized-over-12-consecutive-epidemic-seasons
#10
Laura Petrarca, Raffaella Nenna, Antonella Frassanito, Alessandra Pierangeli, Salvatore Leonardi, Carolina Scagnolari, Guido Antonelli, Paola Papoff, Corrado Moretti, Fabio Midulla
Bronchiolitis is the first lower respiratory tract viral infection manifesting in infants younger than 12 months of age. Our aim was to evaluate clinical and serological differences in infants with bronchiolitis from a single or from multiple viruses. Our secondary aim was to investigate differences in recurrent wheezing episodes after 12-24-36 months of follow-up. We reviewed the clinical records for 486 full-term infants hospitalized for bronchiolitis with at least one virus detected in the nasopharyngeal aspirate...
December 11, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/29206851/role-of-viral-coinfections-in-asthma-development
#11
Maria Luz Garcia-Garcia, Cristina Calvo, Sara Ruiz, Francisco Pozo, Victoria Del Pozo, Laura Remedios, Nadia Exposito, Ana Tellez, Inmaculada Casas
BACKGROUND: Viral respiratory infections, especially acute bronchiolitis, play a key role in the development of asthma in childhood. However, most studies have focused on respiratory syncytial virus or rhinovirus infections and none of them have compared the long-term evolution of single versus double or multiple viral infections. OBJECTIVE: Our aim was to compare the frequency of asthma development at 6-8 years in children with previous admission for bronchiolitis associated with single versus double or multiple viral infection...
2017: PloS One
https://www.readbyqxmd.com/read/29206734/viral-bronchiolitis-in-picus-looking-further-than-the-acute-phase
#12
Florent Baudin
No abstract text is available yet for this article.
December 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29193253/clinicians-need-to-decrease-antibiotic-use-in-previously-healthy-infants-hospitalised-with-bronchiolitis
#13
Marion Bailhache, Emilie Bloudeau, Olivier Richer, Pascal Pillet, Marie Lagarde
Bronchiolitis is a common viral acute respiratory infection that leads to frequent hospitalisation. Although serious bacterial infections are uncommon in such children (1), they could be co-infected with bacteria and the distinction between colonisation, co-infection or superinfection is not always possible. Antibiotics use varies in these situations (2) and their unnecessary use is a major cause of antibiotic resistance (3). We explored the factors that influenced prescribing antibiotic for previously healthy children hospitalised with bronchiolitis...
November 28, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/29191821/follicular-bronchiolitis-in-an-hiv-infected-individual-on-combination-antiretroviral-therapy-with-low-cd4-cell-count-but-sustained-viral-suppression
#14
Line D Rasmussen, Court Pedersen, Helle D Madsen, Christian B Laursen
A 36-year-old Danish man, living in Asia, was diagnosed with Pneumocystis pneumonia (PCP) and HIV in 2013 (CD4+ count: 6 cells/µL; viral load: 518 000 copies/mL). He initiated combination antiretroviral therapy. Later that year, he was also diagnosed with granulomatosis with polyangiitis and was treated with prednisolone. Despite complete viral suppression and increasing CD4+ count (162 cells/µL), he was readmitted with PCP in April 2015. Subsequently, he returned to Denmark (CD4+ count: 80 cells/µL, viral suppression)...
November 29, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29189658/discharge-criteria-for-bronchiolitis-an-unmet-need
#15
Cristina Garcia-Mauriño, Melissa Moore-Clingenpeel, Rebecca Wallihan, Katalin Koranyi, Bavani Rajah, Tiffany Shirk, Maria Vegh, Octavio Ramilo, Asuncion Mejias
BACKGROUND: Admission criteria and standardized management strategies for bronchiolitis are addressed in several guidelines and have shown to be beneficial; however, guidance regarding discharge criteria is limited and widely variable. We assessed the impact on clinical outcomes of a discharge protocol for children < 2 years of age hospitalized with bronchiolitis in a tertiary care pediatric hospital. METHODS: In October 2013, a protocol to standardize the discharge of children with bronchiolitis was implemented in the infectious diseases (ID) ward, but not in other pediatric units caring for these children (non-ID)...
November 20, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29187536/inflammasome-antagonism-by-human-parainfluenza-virus-type-3-c-protein
#16
Niraj K Shil, Swechha M Pokharel, Amiya K Banerjee, Michael Hoffman, Santanu Bose
Human parainfluenza virus type 3 (HPIV3) is a negative-sense single-stranded RNA virus belonging to the paramyxoviridae family. HPIV3 is a lung tropic virus causing airway diseases including pneumonia, croup, and bronchiolitis during infancy and childhood. Activation of inflammasome by pathogens results in production of pro-inflammatory cytokines like IL-1β during infection. Thus, inflammasome mediated pro-inflammatory response plays a critical role in regulating immune response and virus clearance. Inflammasome is a multimeric protein complex triggering caspase-1 activation...
November 29, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29170350/53%C3%A2-piloting-patch-providing-assessment-and-treatment-for-children-at-home-and-piecing-together-what-works
#17
Caroline Ward, Katie Knight, Mary-Rose Ballard, Georgina Keogh, Miriam Samuel, Sara Buttle, Claire Robb, Francesca Cleugh
AIMS: PATCH is a pilot acute community children's nurse led service delivering assessment and treatment for children at home who are moderately unwell and might otherwise be admitted to hospital or attend Paediatric Emergency Department (PED). Children are referred by PED or GP and followed up via telephone support and home visits depending on clinical need for duration of acute illness. METHODS: Pilot year funded by Imperial Charity. Using evaluation to build business case for sustained commissioned service...
December 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/29162850/whole-exome-sequencing-reveals-new-candidate-genes-in-host-genomic-susceptibility-to-respiratory-syncytial-virus-disease
#18
Antonio Salas, Jacobo Pardo-Seco, Miriam Cebey-López, Alberto Gómez-Carballa, Pablo Obando-Pacheco, Irene Rivero-Calle, María-José Currás-Tuala, Jorge Amigo, José Gómez-Rial, Federico Martinón-Torres
Respiratory syncytial virus (RSV) is an important cause of serious lower respiratory tract disease in infants. Several studies have shown evidence pointing to the genome of the host as an important factor determining susceptibility to respiratory disease caused by RSV. We sequenced the complete exomes of 54 patients infected by RSV that needed hospitalization due to development of severe bronchiolitis. The Iberian sample (IBS) from The 1000 Genomes Project (1000G) was used as control group; all the association results were pseudo-replicated using other 1000G-European controls and Spanish controls...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29153065/-genotypes-of-rhinoviruses-in-children-and-adults-patients-with-acute-respiratory-tract-infections
#19
Eda Demirkan, Sevin Kırdar, Emel Ceylan, Ayşe Yenigün, İmran Kurt Ömürlü
Rhinovirus (RV) is one of the most frequent causative agent of acute respiratory tract infections in the world. The virus may cause a mild cold, as well as more serious clinical symptoms in patients with immune system deficiency or comorbidities. Rhinoviruses have been identified by molecular methods under three types: RV-A, RV-B and RV-C. In most of the cases, it was reported that RV-A and RV-C were related with lower respiratory tract infections and asthma exacerbations, while RV-B was rarely reported in lower respiratory tract infections...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29149199/epidemiology-and-clinical-profile-of-pathogens-responsible-for-the-hospitalization-of-children-in-sousse-area-tunisia
#20
Ines Brini, Aida Guerrero, Naila Hannachi, Jihene Bouguila, Dorothea Orth-Höller, Amira Bouhlel, Lamia Boughamoura, Benjamin Hetzer, Wegene Borena, Britta Schiela, Dorothee Von Laer, Jalel Boukadida, Heribert Stoiber
This study aimed to identify a broad spectrum of respiratory pathogens from hospitalized and not-preselected children with acute respiratory tract infections in the Farhat Hached University-hospital of Sousse, Tunisia. Between September 2013 and December 2014, samples from 372 children aged between 1 month and 5 years were collected, and tested using multiplex real-time RT-PCR by a commercial assay for 21 respiratory pathogens. In addition, samples were screened for the presence of Streptococcus pneumoniae 16S rDNA using real-time PCR...
2017: PloS One
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