Abstract:
:Electronic compensation to overcome thermal artifacts during plethysmographic estimations of airway resistance is now used routinely in adults and school-age children, and was shown to be a valuable means of discriminating airway function between preschool children with and without lung disease. A similar system is now commercially available for infants, which could increase the applicability of this technique. However, we noted marked discrepancies in electronically calculated values of airway resistance in this age group, both with respect to absolute values displayed and marked within-subject variability on a single test occasion. The aim of this technical report is to summarize our recent findings in order to alert other users to potential problems. Airway resistance (R(aw)) was measured in 62 infants (28 with cystic fibrosis (CF); 34 healthy). Three to five epochs of quiet regular tidal breathing were collected in each infant. Marked within-subject, within-test variability was observed, with the median coefficient of variation (CV) being 9.1% (range, 1.2-52.6%) within and 8.5% (0.1-112%) between epochs. Among healthy infants, R(aw) varied from 0.1-6.4 (kPa x liter(-1) x sec), with no relationship to either body or lung size and complete overlap of results with those from infants with CF, despite abnormal lung function in the latter when assessed by other means. The marked within- and between-subject variability in healthy infants, and lack of discriminative power of R(aw) when derived from electronically compensated values, currently preclude application in either clinical or research studies.
journal_name
Pediatr Pulmonoljournal_title
Pediatric pulmonologyauthors
Subbarao P,Hulskamp G,Stocks Jdoi
10.1002/ppul.20217subject
Has Abstractpub_date
2005-07-01 00:00:00pages
45-52issue
1eissn
8755-6863issn
1099-0496journal_volume
40pub_type
临床试验,杂志文章abstract::One hundred fifty-four children with recurrent or chronic infections of the lower respiratory tract compatible with the diagnosis of primary ciliary dyskinesia (PCD) were evaluated for the presence of ultrastructural ciliary abnormalities. Studies were performed on multiple samples of respiratory mucosa obtained by na...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950100104
更新日期:1991-01-01 00:00:00
abstract::Respiration rate is an important indicator of a person's health, and thus it is monitored when performing clinical evaluations. There are different approaches for respiration monitoring, but generally they can be classed as contact or noncontact. For contact methods, the sensing device (or part of the instrument conta...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,评审
doi:10.1002/ppul.21416
更新日期:2011-06-01 00:00:00
abstract::End-tidal PCO2 (PETCO2) measurements from two commercially available neonatal infrared capnometers with different sampling systems and a mass spectrometer were compared with arterial PCO2 (PaCO2) to determine whether the former could predict the latter in mechanically ventilated rabbits with and without lung injury. T...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950170309
更新日期:1994-03-01 00:00:00
abstract::Phrenic nerve paralysis is a condition typically occurring after invasive procedures in the chest and neck. Here we describe a case of transient unilateral diaphragmatic paralysis in a child with status asthmaticus complicated by complete right lung atelectasis. Common causes of this disorder and possible implications...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20040
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVE:Lung ultrasound (LUS) is an emerging tool that may be used in the diagnosis and follow-up of children with viral bronchiolitis. In this study, we describe LUS abnormalities in children receiving invasive mechanical ventilation (IMV) for severe bronchiolitis in the pediatric intensive care unit (PICU). Our aim...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.24974
更新日期:2020-10-01 00:00:00
abstract::Allergic bronchopulmonary aspergillosis (ABPA) is a complication commonly encountered in patients with CF that produces significant respiratory morbidity. Chronic airway colonization with Aspergillus induces strong inflammatory responses with high IgE levels. Current guidelines for therapy include prolonged courses of...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20804
更新日期:2008-06-01 00:00:00
abstract:INTRODUCTION:Peripheral muscle dysfunction is increasingly recognized as complicating respiratory disease, but this is difficult to measure non-invasively. RESEARCH QUESTION:Can skeletal muscle function and efficiency be measured during exercise non-invasively using respiratory mass spectrometry (RMS); and is the know...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20899
更新日期:2009-03-01 00:00:00
abstract::The purpose of this study was to determine if the interrupter technique, a noninvasive method for measuring airflow resistance, could be used to assess airway obstruction in children. In 107 children (74 with asthma, 12 with cystic fibrosis, and 21 without lung disease) conductance (mostly of airways) measured with th...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950170402
更新日期:1994-04-01 00:00:00
abstract::Central ventilation disorders(1) and airway obstruction(2) with chronic hypoxemia are causally related to cor pulmonale. Pulmonary vascular resistance is often reversible, and hypoxic pulmonary hypertension often responds to treatment with supplemental oxygen. Oxygen therapy during sleep may be useful as a temporary p...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1037
更新日期:2001-03-01 00:00:00
abstract::The optimal duration of therapy for acute exacerbations of cystic fibrosis (CF) has not been defined, and the utility of serial pulmonary function testing in predicting the duration of therapy has yet to be established. In a review of 90 pulmonary exacerbations of 39 patients with CF requiring hospitalization, we foun...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950160404
更新日期:1993-10-01 00:00:00
abstract:OBJECTIVES:In hospitalized and nonhospitalized children with asthma exacerbations, we evaluated the determinants of (a) prolonged cough on day-14 and (b) asthma quality of life (QoL) questionnaires for parents (PACQLQ) on day-21. We hypothesized that children with more severe acute asthma are more likely to have prolon...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.25168
更新日期:2020-11-12 00:00:00
abstract::Background The prevalence of respiratory-technology dependent children is increasing although for most children the goal is liberation from technology. Liberation from home mechanical ventilation (HMV) and decannulation strategies vary due to the lack of clinical practice standards. The primary objective of this study...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.24164
更新日期:2018-11-01 00:00:00
abstract::Ten infants with evidence of impending respiratory failure from severe bronchiolitis were successfully treated with continuous positive airway pressure (NCPAP) with double nasal prongs. Their mean (SD) age was 6.7 (3.8) months and mean (SD) body weight was 7.1 (2.1) kg. Respiratory assessments were made immediately be...
journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章
doi:10.1002/ppul.1950160305
更新日期:1993-09-01 00:00:00
abstract:BACKGROUND:Different modalities of noninvasive respiratory support have been recommended for the management of acute bronchiolitis in the pediatric intensive care unit (PICU). High-flow nasal cannula (HFNC) is among the new modalities that have been widely used in the last decade. METHODS:This is a retrospective study...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.24553
更新日期:2020-02-01 00:00:00
abstract:BACKGROUND:Multiple breath washout (MBW) is increasingly used in the clinical assessment of patients with cystic fibrosis (CF). Guidelines for MBW quality control (QC) were developed primarily for retrospective assessment and central overreading. We assessed whether real-time QC of MBW data during the measurement impro...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.25119
更新日期:2021-01-01 00:00:00
abstract:OBJECTIVE:Respiratory illnesses compose the most common diagnoses of patients admitted to pediatric intensive care units. In pediatrics, high-flow nasal cannula (HFNC) therapy is an intermediate level of respiratory support with variability in practice. We conducted a pre-post intervention study of patients placed on H...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.25214
更新日期:2020-12-09 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950130307
更新日期:1992-07-01 00:00:00
abstract::Assessment of dynamic inspiratory function may provide valuable information about the degree and progression of pulmonary involvement in patients with Duchenne muscular dystrophy (DMD). The aims of this study were to characterize inspiratory function and to assess the efficacy of idebenone on this pulmonary function o...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1002/ppul.23547
更新日期:2017-04-01 00:00:00
abstract:RATIONALE:Increasing evidence suggests the forced oscillation technique (FOT) has the capacity to provide non-invasive monitoring and diagnosis of respiratory disease in young children. However, which FOT outcomes provide the most pertinent clinical information is currently unknown. The aim of this study was to determi...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.24286
更新日期:2019-06-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20751
更新日期:2008-02-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.10453
更新日期:2004-04-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.24768
更新日期:2020-07-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20194
更新日期:2005-05-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章,多中心研究
doi:10.1002/ppul.10047
更新日期:2002-06-01 00:00:00
abstract::A continuous subcutaneous infusion of terbutaline (CSIT) was used to treat 8 children with chronic severe asthma who continued to experience frequent symptoms, despite treatment with regular oral prednisolone. Five patients experienced a symptomatic improvement from CSIT, leading to a reduction in regular medication. ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.10081
更新日期:2002-05-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23771
更新日期:2017-10-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/(SICI)1099-0496(199612)22:6<364::AID-PPUL5
更新日期:1996-12-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20556
更新日期:2007-03-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
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更新日期:2011-01-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.25084
更新日期:2020-12-01 00:00:00