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Pediatric Pulmonology

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https://www.readbyqxmd.com/read/29152912/physiological-and-anatomical-dead-space-in-mechanically-ventilated-newborn-infants
#1
Theodore Dassios, Paul Dixon, Ann Hickey, Sotirios Fouzas, Anne Greenough
OBJECTIVES: To compare the anatomical (VD-Ana ) and alveolar dead space (VD-Alv ) in term and prematurely born infants and identify the clinical determinants of those indices. WORKING HYPOTHESIS: VD-Ana and VD-Alv will be higher in prematurely born compared to term born infants. STUDY DESIGN: Retrospective analysis of data collected at King's College Hospital NHS Foundation Trust, London, UK. PATIENT SELECTION: Fifty-six infants (11 term, 45 preterm) were studied at a median age of 8 (IQR 2-33) days...
November 20, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29152899/lung-function-after-extremely-preterm-birth-a-population-based-cohort-study-express
#2
Per Thunqvist, Ellen Tufvesson, Leif Bjermer, Anna Winberg, Vineta Fellman, Magnus Domellöf, Erik Melén, Mikael Norman, Jenny Hallberg
BACKGROUND AND OBJECTIVES: Follow-up studies of children and young adults born very-to-moderately preterm show persistent and significant lung function deficits. The aim of the study was to determine lung function and airway mechanics in school-aged children born in 2004 to 2007 and extremely preterm (after 22-26 weeks of gestation). METHODS: In a population-based cohort of children born extremely preterm and controls born at term (n = 350), follow-up at 6½-years-of-age was performed using spirometry and impulse oscillometry...
November 20, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29152895/survey-of-financial-burden-of-families-in-the-u-s-with-children-using-home-mechanical-ventilation
#3
Jeffrey D Edwards, Howard B Panitch, Andrei Constantinescu, Rachel L Miller, Patricia W Stone
AIM: To describe and quantify the out-of-pocket expenses, employment loss, and other financial impact related to caring for a child using home mechanical ventilation (HMV). METHOD: We conducted a cross-sectional survey of U.S. families with children who used HMV. Eligible participants were invited to complete a questionnaire addressing household and child characteristics, out-of-pocket expenses, employment loss/reduction, and financial stress. Participants were recruited with the help of three national patient registries...
November 20, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29148213/dynamic-expiratory-ct-an-effective-non-invasive-diagnostic-exam-for-fragile-children-with-suspected-tracheo-bronchomalacia
#4
Nicola Ullmann, Aurelio Secinaro, Laura Menchini, Serena Caggiano, Elisabetta Verrillo, Teresa Pia Santangelo, Renato Cutrera, Paolo Tomà
BACKGROUND: Tracheobronchomalacia, defined as variable collapse of the airways, has been recognized as an important cause of respiratory morbidity but still widely underdiagnosed. Bronchoscopy is still considered as the gold standard, but numerous limitations are known, especially for fragile sick children. Moreover, information on parenchymal lung disease cannot be described. There is a real need for a reliable, non-invasive test to help detection of airway and parenchymal malformations in children, specifically when bronchoscopy cannot be performed...
November 17, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29136358/is-secretion-of-ifn-gamma-in-response-to-mycobacterium-tuberculosis-antigens-in-youngest-children-sufficient-to-play-a-role-in-tb-diagnostics
#5
Teresa Bielecka, Anna Komorowska-Piotrowska, Katarzyna Krenke, Wojciech Feleszko, Marek Kulus
OBJECTIVES: To assess whether children ≤5 years of age, produce sufficient amounts of interferon gamma (IFN-ɣ) in response to phytohaemagglutinin (mitogen), and Mycobacterium tuberculosis antigens (TB antigens) in the QuantiFERON-TB Gold in-Tube test (QFT-GIT), (Cellestis Ltd., Australia). WORKING HYPOTHESIS: Is TB-antigen-induced IFN-ɣ response in children ≤5 years sufficient to consider QFT-GIT a possible tool for TB diagnostics? Study design, patient-subject selection, and methods: We recruited children 0-17 years old suspected of TB infection to this cross-sectional study, in whom QFT-GIT and TST were performed...
November 14, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29136357/association-of-cytokine-gene-polymorphisms-with-bronchopulmonary-dysplasia-in-han-chinese-newborns
#6
Hui Chen, Wei Zheng
OBJECTIVE: To investigate the association of 14 cytokine gene polymorphisms with bronchopulmonary dysplasia (BPD) among Han Chinese newborns. The 14 polymorphisms investigated were IL18 rs1946519, rs1946518, rs187238, rs360718, and rs360717 polymorphisms, IL10 rs3024493 polymorphism, IL6 rs1800795, rs1800796, and rs1800797 polymorphisms, TNF rs361525 and rs1800629 polymorphisms, and TGFB1 rs1800469, rs1800468, and rs1800471 polymorphisms. WORKING HYPOTHESIS: The polymorphisms could be associated with the risk of BPD among Han Chinese newborns...
November 14, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29136347/pro-inflammatory-mediator-responses-from-neonatal-airway-epithelial-cells-and-early-childhood-wheeze
#7
Steve Turner, David Miller, Garry M Walsh, Alison Scaife, Ultan F Power, Michael D Shields, Graham Devereux
BACKGROUND: Airway epithelial cell (AEC) function differs between children with and without asthma. Here, we associated neonatal AEC function with asthma symptoms at 4 years of age. METHODS: Nasal AEC were collected from neonates within 48 h of birth. Cells were cultured and stimulated with tumor necrosis factor alpha/interleukin-1 beta (TNFα/IL-1β), lipopolysaccharide (LPS), or house dust mite (HDM). Absolute concentrations of pro-inflammatory mediators in the culture supernatant were quantified and expressed as median [interquartile range] in pg/mg protein...
November 14, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29136346/can-high-flow-nasal-cannula-be-used-in-a-pediatric-patient-with-tracheomalacia
#8
LETTER
Z Hatipoğlu, Esquinas Antonio M, Ozcengiz D
No abstract text is available yet for this article.
November 14, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29136345/regional-lung-function-testing-in-children-using-electrical-impedance-tomography
#9
Barbara Vogt, Sarah Löhr, Zhanqi Zhao, Christian Falkenberg, Tobias Ankermann, Norbert Weiler, Inéz Frerichs
OBJECTIVE: To evaluate regional lung function in lung-healthy children before and after exercise challenge using electrical impedance tomography (EIT). METHODS: Regional lung function was examined using EIT in 100 lung-healthy children (three age subgroups: 74-121, 122-155, 156-195 months) at baseline and 10 min after exercise. Global lung function was assessed by spirometry using Z-Scores of FEV1 , FVC, FEV1 /FVC, and FEF75 . The same lung function measures were determined in 912 EIT image pixels to enable the spatial and temporal ventilation distribution analysis...
November 14, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29136344/the-hypoxic-test-in-preterm-neonates-reinvestigated
#10
Christelle Kouakam, Erwan Stephan-Blanchard, André Léké, Guy Kongolo, Elodie Haraux, Stéphane Delanaud, Frédéric Telliez, Karen Chardon
AIM: We currently lack a suitable gold-standard method for implementation on modern equipment to assess peripheral chemoreceptor sensitivity. The aim of the present study was to develop an accurate and reproducible method for assessing peripheral chemoreceptors sensitivity in sleeping preterm neonates. METHODS: A poïkilocapnic hypoxic test was performed twice during rapid eye movement sleep (REM sleep) and non-rapid eye movement sleep (nonREM sleep). The infant breathed hypoxic gas (15% O2 ) for 60 s...
November 14, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29136339/the-imaging-definition-of-bronchiectasis-in-children-is-it-time-for-a-change
#11
EDITORIAL
Alan Brody, Anne Chang
No abstract text is available yet for this article.
November 14, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29115050/localization-of-the-t-cell-response-to-rsv-infection-is-altered-in-infant-mice
#12
Katherine M Eichinger, Jessica L Kosanovich, Kerry M Empey
OBJECTIVES: Respiratory syncytial virus (RSV) is a leading cause of lower respiratory tract infections worldwide, causing disproportionate morbidity and mortality in infants and children. Infants with stronger Th1 responses have less severe disease, yet little is known about the infant T-cell response within the air space. Thus, we tested the hypothesis that RSV infected infant mice would have quantitative and qualitative deficiencies in CD4(+) and CD8(+) T-cell populations isolated from the bronchoalveolar lavage when compared to adults and that local delivery of IFN-γ would increase airway CD4(+) Tbet(+) and CD8(+) Tbet(+) T-cell responses...
November 8, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29115018/relationship-between-exercise-capacity-and-glucose-tolerance-in-cystic-fibrosis
#13
Karla Foster, Guixia Huang, Nanhua Zhang, Joseph Crisalli, Barbara Chini, Raouf Amin, Deborah Elder
BACKGROUND: Improved exercise capacity (EC) and normal glucose tolerance (NGT) are independently associated with favorable outcomes in CF, however, little information on this relationship exists in patients with CF. METHODS: Cardiopulmonary exercise tests, oral glucose tolerance tests (OGTT), and HbA1c values measured within a 12-month period were evaluated on 83 pediatric patients diagnosed with CF. Patients were categorized as having NGT, abnormal glucose tolerance (AGT), or CF-related diabetes (CFRD)...
November 8, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29105377/cryotherapy-to-treat-and-prevent-airway-stenosis-in-a-patient-with-granulomatosis-with-polyangiitis
#14
Chantal Y Spencer, Timothy J Harkin, Alfin G Vicencio
We report our use of cryotherapy delivered via flexible bronchoscopy in a 15-year old girl with granulomatosis with polyangiitis to both treat established airway stenosis and prevent multi-level progression of disease.
November 3, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29084362/the-impact-of-conventional-and-nonconventional-inhalants-on-children-and-adolescents
#15
Samya Z Nasr, Ali Ibrahim Nasrallah, Mariam Abdulghani, Stuart C Sweet
AIM: Inhalant abuse in the adolescent population is a growing concern for care givers, communities, physicians, and medical providers. The aim of this article is to provide a review of the literature about this new challenge. In addition, it raises awareness about recent health policy rulings. METHODS: Review of the literature was done. RESULTS: In this review article, the prevalence of different modes of inhalant use and abuse in children and young adults and their potential health implications will be examined: Cigarettes, ENDS (E Cigarettes), Hookah, Marijuana, and Huffing...
October 30, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29082636/bone-mineral-density-is-related-to-lung-function-outcomes-in-young-people-with-cystic-fibrosis-a-retrospective-study
#16
Nathan Smith, Angelina Lim, Matthew Yap, Louise King, Simon James, Alicia Jones, Sarath Ranganathan, Peter Simm
INTRODUCTION: Improvements in the medical management of cystic fibrosis (CF) in recent years have resulted in increased prevalence of long-term sequelae of the condition, such as low bone mineral density (BMD) and hence an increased risk of fractures in later life. Aim To explore the interaction between BMD and lung function, nutrition, and genotype. METHODS: This study was a retrospective audit of 202 children with CF from August 2000 to January 2016 to investigate associations between BMD Z-scores with clinical status, nutrition, and genetics using dual-energy absorptiometry X-ray data from the Royal Children's Hospital Melbourne, Australia...
October 30, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29064184/cystic-fibrosis-clinical-characteristics-associated-with-dornase-alfa-treatment-regimen-change
#17
Donald R VanDevanter, Marcia L Craib, David J Pasta, Stefanie J Millar, Wayne J Morgan, Michael W Konstan
BACKGROUND: When the chronic respiratory therapy dornase alfa was made commercially available for cystic fibrosis (CF) more than 20 years ago, two regimens were approved: 2.5 mg inhaled once daily (QD) or twice daily (BID). In the intervening years, there has been little guidance as to when to use each regimen. We have studied clinical practice patterns captured in the Epidemiologic Study of CF (ESCF) during the decade following dornase alfa approval (1994-2005) to better understand clinical characteristics associated with QD versus BID dornase alfa use...
October 24, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29064183/induced-sputum-versus-broncho-alveolar-lavage-for-pathogen-surveillance-in-young-cystic-fibrosis-patients-low-specificity-is-not-necessarily-a-bad-thing
#18
LETTER
Patrick Stafler, Huda Mussaffi, Yulia Gendler, Hannah Blau
No abstract text is available yet for this article.
October 24, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29064163/the-oxygen-uptake-efficiency-slope-is-not-a-valid-surrogate-of-aerobic-fitness-in-cystic-fibrosis
#19
Craig A Williams, Owen W Tomlinson, Lucy V Chubbock, Daniel Stevens, Zoe L Saynor, Patrick J Oades, Alan R Barker
BACKGROUND: Maximal cardiopulmonary exercise testing is recommended on an annual basis for children with cystic fibrosis (CF), due to clinically useful prognostic information provided by maximal oxygen uptake (V̇O2max ). However, not all patients are able, or willing, to reach V̇O2max , and therefore submaximal alternatives are required. This study explored the validity of the oxygen uptake efficiency slope (OUES) as a submaximal measure of V̇O2max in children and adolescents with CF...
October 24, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29034999/home-supply-of-emergency-oral-steroids-and-reduction-in-asthma-healthcare-utilization
#20
Lisa M Sarzynski, Tiffany Turner, David R Stukus, Elizabeth Allen
OBJECTIVE: To determine if children with moderate-to-severe persistent asthma have decreased healthcare utilization after receiving a prescription and instructions to use an at home emergency supply of oral steroids during asthma exacerbations. METHODS: A quasi-experimental design study with a historical control from retrospective chart review was performed for patients aged 2-18 years seen in a tertiary care pediatric pulmonary clinic for moderate to severe persistent asthma...
October 16, 2017: Pediatric Pulmonology
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