Abstract:
:We compared the performance of selected ultrasonic and jet nebulizers when aerosolizing several antibiotic formulations to determine optimum combinations for delivery of a respirable antibiotic aerosol. Three ultrasonic devices were tested: the UltraNeb 99/100, the UltraAIR and the Aerosonic. The reusable jet nebulizers were the Dura ProNeb, Pari-LL and the Sidestream. The six disposable jet nebulizers were Marquest Acorn II, Hudson T Updraft II, Baxter MistyNeb, Pari-LC, Pari IS-2, and a disposable Sidestream. Each jet was tested with four compressors: a DeVilbiss AP-50, a Pulmo-Aide, a DuraNeb and a PariMaster. All nebulizing systems were initially tested with normal saline. From the initial data, six jet nebulizers and one ultrasonic device were tested with varying concentrations of tobramycin, gentamicin, ceftazidime, ciprofloxacin and colistin. Output was assessed by measuring volume (milliliters per minute), and amount of drug (milligrams per minute) nebulized. We then measured mean particle size of the antibiotic aerosol with seven jet nebulizers and two different compressors, Pulmo-Aide and PariMaster, and two ultrasonic devices. The rate of nebulization of saline and antibiotic solutions (milliliters per minute) was greater with the ultrasonic device(s) than all jet nebulizer systems tested. Increasing the reservoir antibiotic concentration increased the drug output (milligrams per minute) with the jet nebulizers to a maximum, followed by decreasing output. When antibiotic concentrations were increased the output decreased more precipitously with the ultrasonic devices than with the jet nebulizers. At the highest antibiotic concentrations tested, the ultrasonic devices had the lowest output. Particle size distribution was most dependent on the specific jet device, with particle size distribution less affected by a specific antibiotic or its concentration. Higher reservoir concentrations can be utilized for increasing output of respirable antibiotic aerosols by jet nebulizers. We conclude that antibiotic output is dependent upon both the nebulizing system and the reservoir concentration of antibiotic.
journal_name
Pediatr Pulmonoljournal_title
Pediatric pulmonologyauthors
Weber A,Morlin G,Cohen M,Williams-Warren J,Ramsey B,Smith Adoi
10.1002/(sici)1099-0496(199704)23:4<249::aid-ppul2subject
Has Abstractpub_date
1997-04-01 00:00:00pages
249-60issue
4eissn
8755-6863issn
1099-0496pii
10.1002/(SICI)1099-0496(199704)23:4<249::AID-PPUL2journal_volume
23pub_type
杂志文章,多中心研究abstract:OBJECTIVE:The aim of this study was to assess pulmonary function and its predictors in very low birth weight (birth weight ≤1,500 g) children (VLBWc) with or without bronchopulmonary dysplasia (BPD), born at gestational age ≤32 weeks at a single tertiary center during 1996-1999, after the introduction of surfactant the...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.22676
更新日期:2013-08-01 00:00:00
abstract::SUMMARY. The detection of early airway disease in infants with cystic fibrosis (CF) may lead to earlier intervention and an improved prognosis. We hypothesized that the ratio of maximal expiratory flows while breathing a mixture of helium and oxygen (heliox) and air, referred to as density dependence (DD), would ident...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/1099-0496(200101)31:1<17::aid-ppul1002>3.0
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:Simulated exhaled nitric oxide (eNO) depends on ventilatory settings used in different experimental conditions. OBJECTIVES:To normalize the simulated minute exhaled nitric oxide according to different ventilatory settings. WORKING HYPOTHESIS:Different ventilatory settings influence the concentrations of ex...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20893
更新日期:2008-12-01 00:00:00
abstract::A neonate with severe neonatal asphyxia was treated with therapeutic hypothermia. He developed hypothermia-induced respiratory deterioration, after which congenital tracheal stenosis and pulmonary artery sling were diagnosed. Even low-grade hypothermia is likely to induce bronchial narrowing in neonates, especially in...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23538
更新日期:2017-03-01 00:00:00
abstract::We report a case of fungal pleural effusion secondary to presumed valproate induced pancreatitis with pseudocyst and stricture formation. A child with dyskinetic cerebral palsy who had been on sodium valproate for several years was transferred for drainage of a left sided pleural effusion. Pleural fluid culture consis...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20982
更新日期:2009-06-01 00:00:00
abstract::The choice of antibiotics for sinusitis in children with cystic fibrosis (CF) is empirical or based on lower airway cultures, because sinus cultures are difficult to obtain. The aim of this study was to identify the main organisms cultured from CF children with chronic sinusitis, and to evaluate the concordance of con...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20396
更新日期:2006-05-01 00:00:00
abstract::Cystic fibrosis (CF) is one of the most common autosomal recessive and multisystemic diseases. CF affects many systems. One of these systems is the endocrine and exocrine functions of the pancreas, causing cystic fibrosis-related diabetes, which is extremely complex and has unique pathogenesis. Maturity-onset diabetes...
journal_title:Pediatric pulmonology
pub_type:
doi:10.1002/ppul.24746
更新日期:2020-05-01 00:00:00
abstract::Our objective was to study meconium-induced lung injury in isolated perfused rat lungs exposed to anoxia. Our working hypothesis was that meconium-induced lung injury is independent of preexisting hypoxia, and that hypoxia will increase severity of lung injury observed after meconium aspiration. We compared five diffe...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20123
更新日期:2005-04-01 00:00:00
abstract::This study was designed to collect data on the prevalence of respiratory syncytial virus (RSV) infection in Italy in infants hospitalized for lower respiratory tract infections, and to evaluate which of the recognized risk factors might be associated with disease severity. Thirty-two centers throughout Italy participa...
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::Appropriate, regular exercise is of benefit to patients with cystic fibrosis (CF). As with other segments of the population, it has been difficult to devise exercise programs to which most patients will adhere for long periods of time. In healthy children, factors that are related to positive exercise compliance inclu...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,评审
doi:10.1002/ppul.10126
更新日期:2002-07-01 00:00:00
abstract::SUMMARY. Patients with idiopathic scoliosis are reported to have a restrictive pattern on pulmonary function tests. A case is presented of a teenage girl with juvenile idiopathic scoliosis who had evidence of airways obstruction in addition to restriction on pulmonary function tests (PFT). Examination of flow-volume l...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/1099-0496(200101)31:1<86::aid-ppul1012>3.0
更新日期:2001-01-01 00:00:00
abstract::Our objective was to determine the repeatability of bronchial responsiveness to mannitol dry powder (MDP) as an objective marker of asthma in children. MDP challenge was performed in children with stable asthma at the same time of the day on two separate occasions within a week. The test was terminated after a 15% fal...
journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章
doi:10.1002/ppul.10378
更新日期:2003-12-01 00:00:00
abstract::Pertussis carries a high risk of mortality in very young infants. The mechanism of refractory cardio-respiratory failure is complex and not clearly delineated. We aimed to examine the clinico-pathological features and suggest how they may be related to outcome, by multi-center review of clinical records and post-morte...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,多中心研究
doi:10.1002/ppul.21082
更新日期:2009-10-01 00:00:00
abstract:BACKGROUND:Respiratory viral and atypical bacterial infections are associated with pulmonary exacerbations and hospitalisations in cystic fibrosis patients. We wanted to study the impact of such infections on children attending the outpatient clinic. METHODS:Seventy-five children were followed for 12 months at regular...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20517
更新日期:2006-12-01 00:00:00
abstract::Foreign-body aspiration (FBA) is a commonly encountered serious problem during childhood, accounting for 7% of lethal accidents in children aged 1-3 years. Bronchoscopy is indicated when a clear history of FBA is present, but the history may be unreliable. Clinical manifestations can be seen in various diseases, and w...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20128
更新日期:2005-02-01 00:00:00
abstract::The reliability and predictive value of salivary theophylline levels was investigated in 58 children who were treated with oral sustained-release theophylline preparations for bronchial asthma. Serum and saliva levels were assessed by fluorescence polarization immunoassay (FPIA), and Seralyzer (reagent strip reflectan...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950060407
更新日期:1989-01-01 00:00:00
abstract::The structure, distribution, and frequency of neuroendocrine (NE) cells in human fetal lung from early stages of development to term are described. Neuroendocrine cells were studied by electron microscopy and immunostaining for serotonin and bombesin, recently identified markers of these cells in human lung. The diffe...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:
更新日期:1985-05-01 00:00:00
abstract:BACKGROUND:Community-acquired pneumonia (CAP) is a major cause of childhood morbidity and mortality worldwide. The angiotensin-converting enzyme (ACE) gene is a potential candidate gene for CAP risk. OBJECTIVES:In this study, we aimed to investigate whether the ACE insertion/deletion (I/D) polymorphism (rs4340) could ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23886
更新日期:2017-12-01 00:00:00
abstract:OBJECTIVES:Sildenafil, tezosentan, and prostacyclin reduce pulmonary vascular pressures in pulmonary hypertension, but have potential to vasodilate the systemic circulation. Nebulized vasodilators allow targeted drug delivery, high local drug concentrations, less systemic hypotension, and better matching of the lung's ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20431
更新日期:2006-07-01 00:00:00
abstract::We report on a 7-month old infant with severe respiratory distress secondary to a paratracheal bronchogenic cyst. Respiratory relief was achieved by transtracheal puncture of the cyst. Surgical removal of the cyst was performed 1 week later because of radiological evidence of reaccumulation of fluid. ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.10408
更新日期:2004-12-01 00:00:00
abstract:OBJECTIVE:To determine whether non-invasive positive pressure ventilation (NIPPV) delivered via nasal prongs can alleviate the need for tracheal intubation and invasive ventilation in infants admitted to the pediatric intensive care unit (PICU) with impending respiratory failure, and to find predictive factors for succ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.22561
更新日期:2012-10-01 00:00:00
abstract::Prenatal cigarette smoke (CS) exposure, in combination with hypoxia and/or hyperthermia can lead to gasping and attenuated recovery from hypoxia in 7 days old rat pups. We studied 95 unanesthetized spontaneously breathing 14 days old rat pups to investigate if the destabilizing effects of increased ambient temperature...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.21578
更新日期:2012-05-01 00:00:00
abstract::The purpose of the study was to analyze the respiratory-dependent intraarterial blood pressure variations (pulsus paradoxus, PP) in intensive care unit patients with obstructive and restrictive pulmonary disease, and to evaluate the usefulness of PP for assessment of disease severity. One-minute paper recordings of ar...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/1099-0496(200102)31:2<138::aid-ppul1022>3.
更新日期:2001-02-01 00:00:00
abstract::Exercise-induced asthma (EIA) is a possible cause of poor physical performance in children. No data are available on the value of respiratory symptoms to discriminate children with bad physical fitness from children with EIA. We evaluated respiratory symptoms in school-age children during and after exercise in relatio...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20185
更新日期:2005-04-01 00:00:00
abstract:OBJECTIVE:To validate the bronchiolitis score of Sant Joan de Déu (BROSJOD) and to examine the previously defined scoring cutoff. PATIENTS AND METHODS:Prospective, observational study. BROSJOD scoring was done by two independent physicians (at admission, 24 and 48 hr). Internal consistency of the score was assessed us...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23546
更新日期:2017-04-01 00:00:00
abstract::We studied the effect of low-protein diet (8% casein) on lung growth in rats from 3 to 7 weeks of age. Their diet was isocaloric with that of control animals fed a diet of 20% casein. The calorie intake of experimental animals was increased during the first 3 weeks of the experiment, but they increased less (about 10%...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950070308
更新日期:1989-01-01 00:00:00
abstract:BACKGROUND:Community-acquired pneumonia (CAP) is a leading cause of childhood death. There are few published reports of radiographic findings among children with severe CAP. OBJECTIVE:To describe chest X-ray (CXR) findings and assess association between these radiographic findings and pneumococcal isolation in childre...
journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1002/ppul.21287
更新日期:2010-10-01 00:00:00
abstract::Two patients with intractable chronic cough were found to have tonsillar tissue impinging on their epiglottis. In both case, tonsillectomy was curative. The observations in these patients are consistent with a previous report indicating chronic cough from the uvula in contact with the epiglottis with cough cessation f...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20919
更新日期:2008-11-01 00:00:00
abstract::A computerized method for the measurement of alveolar ventilation (VA) and the mean alveolar partial pressures of CO2 and O2 is described and tested in healthy, awake fullterm (FT) newborns and preterm (PT) infants (postnatal age 40 days). This study emphasizes the technical pitfalls generally encountered when dealing...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950050409
更新日期:1988-01-01 00:00:00
abstract::Increased numbers of eosinophils and increased concentrations of plasma proteins have been found in the airways of patients with mild asthma. We used an intact guinea pig trachea model to investigate the role of eosinophil peroxidase (EPO) in altering the function of the airway epithelial barrier. EPO in the presence ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/(SICI)1099-0496(199603)21:3<159::AID-PPUL2
更新日期:1996-03-01 00:00:00