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impulse oscillometry

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https://www.readbyqxmd.com/read/28649293/small-airways-disease-and-severe-asthma
#1
REVIEW
Tara F Carr, Roula Altisheh, Myron Zitt
The small airways of the lungs are commonly affected in pediatric and adult asthma. Small airways disease has been related to asthma control, severity, and risk of exacerbation. Diagnosis of small airways disease can be best made through evaluation of surgical lung specimens. Noninvasive techniques including spirometry, plethysmography, nitrogen washout, impulse oscillometry, and cross-sectional imaging have been utilized to assess and infer the extent of small airways disease in asthma and can be used longitudinally to assess response to treatment...
2017: World Allergy Organization Journal
https://www.readbyqxmd.com/read/28637400/impulse-oscillometry-system-and-anthropometric-variables-of-preschoolers-children-and-adolesctents-systematic-review
#2
Maíra Seabra De Assumpção, Emília da Silva Gonçalves, Marina Simões Oliveira, José Dirceu Ribeiro, Adyléia Aparecida Contrera Dalbo Toro, Antonio Azevedo Barros-Filho, Maria Ângela Reis Góes de Monteiro, Camila Isabel Santos Schivinski
BACKGROUND: To identify the anthropometric variables in equations/reference values of impulse oscillometry system (IOS) parameters in preschoolers, children and adolescents. METHOD: Systematic search on the databases MEDLINE/Ovid, SCOPUS and SciELO using the key words "preschool, child and adolescent", "impulse oscillometry", "reference values" and its variations. RESULTS: This review considered a total of 13 articles. The studies presented height, weight, sex and age as the variables correlated to oscillometric parameters...
June 21, 2017: Current Pediatric Reviews
https://www.readbyqxmd.com/read/28583260/the-case-for-impulse-oscillometry-in-the-management-of-asthma-in-children-and-adults
#3
REVIEW
Stanley P Galant, Hirsh D Komarow, Hye-Won Shin, Salman Siddiqui, Brian J Lipworth
OBJECTIVE: To provide a clinical rationale for including impulse oscillometry (IOS) as a part of standard office-based asthma assessment. DATA SOURCES: PubMed and Google search, limited to English language and human disease, with the keywords IOS and asthma. STUDY SELECTIONS: Articles included in this review were based on the expert opinion and previous publications by the authors. RESULTS: In children, IOS was more useful than spirometry in identifying asthma and uncontrolled asthma and predicting loss of control and exacerbations...
June 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28579768/clinical-characteristics-of-copd-patients-with-tidal-expiratory-flow-limitation
#4
James Dean, Umme Kolsum, Paul Hitchen, Vandana Gupta, Dave Singh
We have used impulse oscillometry to identify COPD patients with tidal expiratory flow limitation (EFL), which is a measurement related to small airway disease. We report that 37.4% of COPD patients had EFL; these patients had multiple clinical characteristics of more severe disease including lower forced expiratory volume in 1 second values, greater hyperinflation, reduced exercise performance, and increased small airway impairment. We highlight that EFL can be used to identify a subgroup of COPD patients with distinct characteristics associated with small airway disease...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28453578/effects-of-a-mixture-of-chloromethylisothiazolinone-and-methylisothiazolinone-on-peripheral-airway-dysfunction-in-children
#5
Hyun-Ju Cho, Dong-Uk Park, Jisun Yoon, Eun Lee, Song-I Yang, Young-Ho Kim, So-Yeon Lee, Soo-Jong Hong
BACKGROUND: Children who were only exposed to a mixture of chloromethylisothiazolinone (CMIT) and methylisothiazolinone (MIT) as humidifier disinfectant (HD) components were evaluated for humidifier disinfectant-associated lung injury (HDLI) from 2012. This study was to evaluate the pulmonary function using, impulse oscillometry (IOS) for children exposed to a mixture of CMIT/MIT from HD. METHODS: Twenty-four children who were only exposed to a mixture of CMIT/MIT, with no previous underlying disease, were assessed by IOS...
2017: PloS One
https://www.readbyqxmd.com/read/28397998/determinants-of-peripheral-airway-function-in-adults-with-and-without-asthma
#6
Paul D Robinson, Gregory G King, Malcolm R Sears, Chuen Y Hong, Robert J Hancox
BACKGROUND AND OBJECTIVE: Peripheral airway involvement in asthma remains poorly understood. We investigated impulse oscillometry (IOS) measures of peripheral airway function in a population-based birth cohort. METHODS: Pre- and post-bronchodilator spirometry and IOS measures of respiratory resistance and reactance were measured in 915 participants at age 38 years. RESULTS: Current asthma was associated with impairments in both spirometry and IOS parameters...
April 11, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28388961/deposition-efficiency-of-inhaled-particles-15-5000%C3%A2-nm-related-to-breathing-pattern-and-lung-function-an-experimental-study-in-healthy-children-and-adults
#7
Jenny Rissler, Anders Gudmundsson, Hanna Nicklasson, Erik Swietlicki, Per Wollmer, Jakob Löndahl
BACKGROUND: Exposure to airborne particles has a major impact on global health. The probability of these particles to deposit in the respiratory tract during breathing is essential for their toxic effects. Observations have shown that there is a substantial variability in deposition between subjects, not only due to respiratory diseases, but also among individuals with healthy lungs. The factors determining this variability are, however, not fully understood. METHOD: In this study we experimentally investigate factors that determine individual differences in the respiratory tract depositions of inhaled particles for healthy subjects at relaxed breathing...
April 8, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28370347/velocity-vector-imaging-shows-normal-cardiac-systolic-function-in-survivors-of-severe-bronchopulmonary-dysplasia-at-six-to-16-years-of-age
#8
Piia Suursalmi, Tiina Ojala, Tuija Poutanen, Anneli Eerola, Päivi Korhonen, Tarja Kopeli, Outi Tammela
AIM: This study evaluated global myocardial function and associations between cardiac function and lung function in very low birth weight (VLBW) children, with and without severe radiographic bronchopulmonary dysplasia (BPD), at six to 14 years of age. METHODS: We studied 34 VLBW and 19 term-born controls, and the VLBW group was further divided into a BPD group with severe radiographic BPD and those without radiographic BPD in infancy. Detailed right and left ventricular myocardial functions were analysed by velocity vector imaging, and the left ventricular mass was calculated...
March 31, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28352170/clinical-application-value-of-impulse-oscillometry-in-geriatric-patients-with-copd
#9
Zhonghui Liu, Lianjun Lin, Xinmin Liu
BACKGROUND: The diagnosis and assessment of COPD rely mainly on the use of spirometry, which is an effort-dependent test and requires good patient cooperation. Impulse oscillometry (IOS) is a non-volitional method that requires less effort and cooperation and presents advantages for geriatric patients. However, the clinical application value of IOS in geriatric patients with COPD remains unclear. AIM: The aim of this study was to investigate the clinical application value of IOS in geriatric patients with COPD...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28341697/risk-factors-for-persistence-of-lower-respiratory-symptoms-among-community-members-exposed-to-the-2001-world-trade-center-terrorist-attacks
#10
Hannah T Jordan, Stephen M Friedman, Joan Reibman, Roberta M Goldring, Sara A Miller Archie, Felix Ortega, Howard Alper, Yongzhao Shao, Carey B Maslow, James E Cone, Mark R Farfel, Kenneth I Berger
OBJECTIVES: We studied the course of lower respiratory symptoms (LRS; cough, wheeze or dyspnoea) among community members exposed to the 9/11/2001 World Trade Center (WTC) attacks during a period of 12-13 years following the attacks, and evaluated risk factors for LRS persistence, including peripheral airway dysfunction and post-traumatic stress disorder (PTSD). METHODS: Non-smoking adult participants in a case-control study of post-9/11-onset LRS (exam 1, 2008-2010) were recruited for follow-up (exam 2, 2013-2014)...
June 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28336254/effectiveness-of-training-patients-using-dvd-in-the-accurate-use-of%C3%A2-inhalers-for-the-treatment-of-bronchial-asthma
#11
Koichiro Takita, Rieko Kondo, Takahiko Horiguchi
BACKGROUND: Inhalants are the standard treatment for patients with bronchial asthma. Inaccurate inhaler use leads to inadequate therapeutic effects and unnecessary dosage increases. However, it is a challenge for practitioners to master the various devices available and train patients on the accurate use of inhalers. Thus, establishing a system to instruct patients on how to accurately use inhalers is essential. We prepared a DVD and accompanying user manual explaining the operation of each inhaler device used in Japan...
March 20, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28197800/small-airway-obstruction-in-chronic-obstructive-pulmonary-disease-potential-parameters-for-early-detection
#12
Tomasz Piorunek, Magdalena Kostrzewska, Marta Stelmach-Mardas, Marcin Mardas, Sławomir Michalak, Joanna Goździk-Spychalska, Halina Batura-Gabryel
The impulse oscillometry (IOS) is recognized as a complementary method to spirometry in the diagnostics of obstructive pulmonary disorders. The IOS enables to measure total respiratory resistance (R5) and proximal respiratory resistance (R20), with the R5-R20 difference reflecting small airway resistance. This study seeks to evaluate the usefulness of R5-R20, maximal mid-expiratory flow (MMEF), and forced expiratory volume in 3 s/forced vital capacity ratio (FEV3/FVC), in the assessment of small airway obstruction in chronic obstructive pulmonary disease (COPD)...
February 15, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28114141/lung-function-in-women-with-idiopathic-central-precocious-puberty-a-pilot-study%C3%A2
#13
Virginia Murri, Franco Antoniazzi, Michele Piazza, Paolo Cavarzere, Claudia Banzato, Attilio Boner, Rossella Gaudino
BACKGROUND: Studies have reported that women with early menarche (≤10 years) have lower lung function. AIM: To investigate lung function in women with a history of idio pathic central precocious puberty (ICPP) treated during childhood with gonadotropin-releasing hormone agonist (GnRHa). METHODS: ICPP women (n = 23) were compared with healthy age-matched controls (n = 23). Subjects were clinically evaluated by means of a questionnaire, baseline and post-β<Sub>2</Sub> agonist spirometry, impulse oscillometry (a measure of airway resistance), and measurement of fractional exhaled nitric oxide (FeNO)...
2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/27932874/bronchodilator-response-of-advanced-lung-function-parameters-depending-on-copd-severity
#14
Linnea Jarenbäck, Göran Eriksson, Stefan Peterson, Jaro Ankerst, Leif Bjermer, Ellen Tufvesson
BACKGROUND: COPD is defined as partly irreversible airflow obstruction. The response pattern of bronchodilators has not been followed in advanced lung function parameters. PURPOSE: The aim of this study was to investigate bronchodilator response pattern in advanced lung function parameters in a continuous fashion along forced expiratory volume in 1 second (FEV1) percent predicted (%p) in COPD patients and controls. PATIENTS AND METHODS: Eighty-one smokers/ex-smokers (41 controls and 40 COPD) performed spirometry, body plethysmography, impulse oscillometry and single-breath helium dilution carbon monoxide diffusion at baseline, after salbutamol inhalation and then after an additional inhalation of ipratropium...
2016: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/27856329/airway-reactivity-in-response-to-repeated-emotional-film-clip-presentation-in-asthma
#15
Thomas Janssens, Ashton M Steele, David Rosenfield, Thomas Ritz
Emotional stimuli elicit airway constriction in individuals with asthma and in healthy individuals, but little is known about effects of repeated stimulation. We therefore explored the effect of repeated emotion induction on respiratory resistance (Rrs) using unpleasant, high-arousal surgery films and investigated effects of respiration and emotional reactivity. Twenty-six participants (13 with asthma) watched a series of 12 short, 45-s surgery films followed by 2-min recovery periods. Rrs assessed with impulse oscillometry was significantly elevated during films in both groups compared to baseline and recovered quickly after that...
November 14, 2016: Biological Psychology
https://www.readbyqxmd.com/read/27852080/prevalence-of-small-airway-dysfunction-among-copd-patients-with-different-gold-stages-and-its-role-in-the-impact-of-disease
#16
Ernesto Crisafulli, Roberta Pisi, Marina Aiello, Matteo Vigna, Panagiota Tzani, Anna Torres, Giuseppina Bertorelli, Alfredo Chetta
BACKGROUND: In chronic obstructive pulmonary disease (COPD) patients, small-airway dysfunction (SAD) is considered a functional hallmark of disease. However, the exact role of SAD in the clinical presentation of COPD is not yet completely understood; moreover, it is not known whether SAD may have a relationship with the impact of disease. OBJECTIVES: To evaluate the prevalence of SAD among COPD patients categorized by the old and the new GOLD classification and to ascertain whether there is a relationship between SAD and impact of disease measured by the COPD Assessment Test (CAT) questionnaire...
2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/27825614/impulse-oscillometry-in-the-assessment-of-asthmatic-children-and-adolescents-from-a-narrative-to-a-systematic-review
#17
REVIEW
Karoliny Dos Santos, Lílian L Fausto, Paulo A M Camargos, Maicon R Kviecinski, Jane da Silva
Diagnosis and management of asthma often relies mostly on symptoms because spirometry is not always reliable in some age groups, such as preschoolers. It is unclear whether impulse oscillometry (IOS) can supplement or replace spirometry. Available reports suggest that IOS has been applied with success in asthmatic children and adolescents to assess exacerbations, level of control, severity and response to treatment in the short and long term. Very few studies using adequate sample sizes and methods have been performed comparing the accuracy of IOS to spirometry for the diagnosis of asthma...
September 28, 2016: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/27792267/very-low-birthweight-bronchopulmonary-dysplasia-survivors-had-similar-cardiac-outcomes-to-controls-at-six-years-to-14-years-of-age
#18
Piia Suursalmi, Anneli Eerola, Tuija Poutanen, Päivi Korhonen, Tarja Kopeli, Outi Tammela
AIM: This study evaluated cardiac function and its associations with lung function and neonatal pulmonary morbidity in very low birthweight (VLBW) children, with and without severe radiographic bronchopulmonary dysplasia (radBPD), at school age. METHODS: We examined 18 VLBW children with radBPD, 17 VLBW children without radBPD and 18 healthy term-born children using conventional echocardiography, tissue Doppler imaging, speckle tracking echocardiography and real-time three-dimensional echocardiography at six years to 14 years of age...
February 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/27743492/respiratory-reactance-in-children-aged-three-to-five%C3%A2-years-with-postinfectious-bronchiolitis-obliterans-is-higher-than-in-those-with-asthma
#19
Eun Lee, Jisun Yoon, Hyun-Ju Cho, Soo-Jong Hong, Jinho Yu
AIM: We investigated airway function in preschoolers with postinfectious bronchiolitis obliterans (PIBO) using impulse oscillometry (IOS). METHODS: This study enrolled 182 children aged three to five years: 12 with PIBO, 135 with asthma and 35 nonatopic controls. Respiratory resistance and reactance were assessed using IOS. RESULTS: The percentage predicted (% predicted) of prebronchodilator respiratory resistance at 5 Hz was significantly higher in children with PIBO (177...
January 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/27736034/sensitivity-of-newly-defined-impulse-oscillometry-indices-in-preschool-children
#20
Hanna Knihtilä, Anne Kotaniemi-Syrjänen, Anna S Pelkonen, Satu Kalliola, Mika J Mäkelä, L Pekka Malmberg
INTRODUCTION: Early origins of chronic obstructive pulmonary disease have been recognized. Impulse oscillometry (IOS) is suitable for assessment of lung function also in preschool children, and some novel indices have been connected to assessment of small airway function. However, limited data exist on the sensitivity of these new indices to detect lung function deficits in young symptomatic children. METHODS: IOS measurements of 103 healthy preschool children were evaluated to establish reference equations for the difference between respiratory resistance at 5 and 20 Hz (R5-20), the relative difference of R5-20 (R5-20%), and area under the reactance curve (AX)...
May 2017: Pediatric Pulmonology
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