Abstract:
:Previous research has demonstrated the potential benefit derived from the combination of high frequency oscillatory ventilation and volume guarantee mode (HFOV-VG), a procedure that allows us to explore and control very low tidal volumes. We hypothesized that secondary spontaneous change in oscillation pressure amplitude (∆Phf), while increasing the mean airway pressure (MAP) using HFOV-VG can target the lung recruitment. METHODS:A two-step animal distress model study was designed; in the first-step (ex vivo model), the animal's lungs were isolated to visually check lung recruitment and, in the second one (in vivo model), they were checked through arterial oxygen partial pressure improvement. Baseline measurements were performed, ventilation was set for 10 min and followed by bronchoalveolar lavage with isotonic saline to induce depletion of surfactant and thereby achieve a low compliance lung model. The high-frequency tidal volume and frequency remained constant and the MAP was increased by 2 cmH2 O (ex vivo) and 3 cmH2 O steps (in vivo) every 2 min. Changes in ΔPhf to achieve the fixed volume were recorded at the end of each interval to describe the maximum drop point as the recruitment point. RESULTS:Fourteen Wistar Han rats were included, seven on each sub-study described. After gradual MAP increments, a progressive decrease in ΔPhf related to recruited lung regions was visually demonstrated. In the in vivo model we detected a significant comparative decrease of ΔPhf, when measured against the previous value, after reaching a MAP of 11 cmH2 O up to 17 cmH2 O, correlating with a significant improvement in oxygenation. CONCLUSION:The changes in ∆Phf, linked to a progressive increase in MAP during HFOV-VG, might identify optimal lung recruitment and could potentially be used as an additional lung recruitment marker.
journal_name
Pediatr Pulmonoljournal_title
Pediatric pulmonologyauthors
Rodríguez Sánchez de la Blanca A,Sánchez Luna M,González Pacheco N,Ramos Navarro C,Santos González M,Tendillo Cortijo Fdoi
10.1002/ppul.25084subject
Has Abstractpub_date
2020-12-01 00:00:00pages
3525-3531issue
12eissn
8755-6863issn
1099-0496journal_volume
55pub_type
杂志文章abstract::Our aim was to evaluate long-term effects of exogenous surfactant therapy on pulmonary functional outcome in children born very preterm. We examined 40 children aged 7-12 years who were born before 30 weeks of gestation with an immature surfactant system, and were randomized to one of three treatment groups: human sur...
journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/(sici)1099-0496(199803)25:3<182::aid-ppul8
更新日期:1998-03-01 00:00:00
abstract::We present a child with interstitial lung disease (ILD) who was diagnosed with desquamative interstitial pneumonitis following CT thorax and open lung biopsy aged 2 years. Subsequently, surfactant protein gene analysis revealed mutations in the ABCA3 gene. This case of ABCA3 deficient ILD describes a stable clinical c...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.22811
更新日期:2014-03-01 00:00:00
abstract::The consequences of poor quality and/or inadequate sleep in children and adolescents have become a major public health concern, and one in which pediatric health care professionals have become increasingly involved. In particular, insufficient and/or fragmented sleep resulting from primary sleep disorders such as obst...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,评审
doi:10.1002/ppul.20981
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:Neurally adjusted ventilatory assist (NAVA) is a ventilation mode which provides respiratory support proportional to the electrical activity of the diaphragm (Edi). The aims of this trial were to assess the feasibility of aiming at peak Edi between 5 and 15 µV during NAVA in clinical practice, to study the e...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,随机对照试验
doi:10.1002/ppul.23084
更新日期:2015-09-01 00:00:00
abstract::Between October, 1985 and May 1987, 29 children (mean age 22 +/- 22 months, range 2-54 months) with AIDS or ARC developed acute respiratory illness. The initial diagnostic procedure was flexible fiberoptic bronchoscopy, with bronchoalveolar lavage (BAL). BAL was positive for Pneumocystis carinii in 14 and for respirat...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950030609
更新日期:1987-11-01 00:00:00
abstract::The free running test is a useful method for evaluation of exercise-induced bronchospasm in children. In young children this test simulates real-life circumstances and can be done more easily than histamine or methacholine challenges. The interrupter technique is a noninvasive method for measuring airflow resistance d...
journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章
doi:10.1002/(sici)1099-0496(199903)27:3<203::aid-ppul9
更新日期:1999-03-01 00:00:00
abstract::To determine the extent of pulmonary dysfunction following primary closure of an abdominal wall defect, we obtained pulmonary function tests (PFT) in 11 newborn infants with gastroschisis and 6 with large omphaloceles admitted to a newborn ICU in a children's hospital. Patients were 1 to 30 days of age at the time of ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950120309
更新日期:1992-03-01 00:00:00
abstract::A 14-year-old Korean boy was admitted with cough, hemoptysis, and fever. A chest X-ray showed a solitary pulmonary mass and pneumonitis. Bronchial biopsy by fiberoptic bronchoscopy revealed a poorly differentiated small cell carcinoma. All of the staging information indicated that the patient had limited disease. Duri...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/(sici)1099-0496(200004)29:4<317::aid-ppul1
更新日期:2000-04-01 00:00:00
abstract::Lung hypoplasia is the main cause of congenital diaphragmatic hernia (CDH)-associated death but pathogenesis remains unclear. MiR-455-5p is involved in lung hypoplasia. We hypothesized that nitrofen causes abnormal miR-455-5p expression during lung development and designed this study to determine the relationship betw...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.24739
更新日期:2020-06-01 00:00:00
abstract::Physicians and physiotherapists who care for CF patients have recommended the use of trampolines as a physiotherapeutic tool for enhancing cardiopulmonary performance, encouraging sputum production, and improving general well-being. Despite some therapeutic and recreational benefits associated with trampoline use, pap...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,评审
doi:10.1002/ppul.20133
更新日期:2005-01-01 00:00:00
abstract:AIM:Magnesium is an adjunctive therapy used in patients with status asthmaticus who do not respond to conventional therapy. The optimal time from initiation of therapy, to determination of response and administration of magnesium has not yet been resolved. Our objective was to determine if magnesium administered in the...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.24013
更新日期:2018-07-01 00:00:00
abstract::We have evaluated the role of eosinophil cationic protein (ECP) concentrations in serum in predicting wheezing after bronchiolitis, during infancy and early childhood. A prospective study at a university hospital serving all pediatric patients in a defined area was designed. Serum ECP concentrations were measured in 9...
journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/(sici)1099-0496(199706)23:6<397::aid-ppul1
更新日期:1997-06-01 00:00:00
abstract::Recurrent respiratory symptoms are common in preterm infants in the first 2 years of life. The aim of this study was to determine the lung function abnormalities associated with such symptoms. Forty preterm infants, with a median gestational age of 29 weeks were studied at a median postnatal age of 12 months. Twenty-t...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950110304
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:Multiple breath washout (MBW) in infants presents a number of technical challenges. Conventional MBW is based on simultaneous measurement of flow and gas concentrations. These two signals are aligned and combined to derive expired gas volumes from which lung volumes and measures of ventilation inhomogeneity ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23348
更新日期:2016-05-01 00:00:00
abstract::Spontaneous hemopneumothorax (SHP) is a rare potentially life-threatening condition that occurs in predominantly young adolescents. The resultant massive hemorrhage leading to hypovolemic shock can be a surgical emergency. It constitutes 1-12% of all spontaneous pneumothoraces and presents with two cardinal features, ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.22712
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVE:To define the benefits of a flexible bronchoscopy (FB) service in a Paediatric Intensive Care Unit (PICU). DESIGN:Review of the first 200 FBs undertaken in a large PICU. SETTING:Large cardiac and medical PICU in the United Kingdom, also providing extra-corporeal life support. PATIENTS:129 patients (78 male...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20910
更新日期:2008-12-01 00:00:00
abstract:BACKGROUND:Chest computerized tomography (CT) scores are associated with the frequency of future pulmonary exacerbations in people with cystic fibrosis (CF). However, cut-off values to identify children with mild lung disease with different risks for frequent future pulmonary exacerbations have not been identified. ME...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,随机对照试验
doi:10.1002/ppul.24144
更新日期:2018-10-01 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
abstract:BACKGROUND:Decreased lung function is common in preterm-born survivors. Increased fractional exhaled nitric oxide (FeNO) appears to be a reliable test for eosinophillic airway inflammation especially in asthma. We, systematically, reviewed the literature to compare FeNO levels in preterm-born children and adults who di...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,meta分析
doi:10.1002/ppul.24270
更新日期:2019-05-01 00:00:00
abstract::Prader-Willi syndrome (PWS) is a genetic disorder, with hypotonia being the predominant feature in infancy, and developmental delay, obesity, and behavioral problems becoming more prominent in childhood and adolescence. Children with this disorder frequently suffer from excessive daytime sleepiness and have a primary ...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,评审
doi:10.1002/ppul.10152
更新日期:2002-09-01 00:00:00
abstract:OBJECTIVE:Alveolar concentration (C(A)NO) and bronchial flux (J(aw)NO) of nitric oxide (NO) characterize the contributions of peripheral and proximal airways to exhaled NO. Both parameters can be estimated using a two-compartment model if the fraction of NO in orally exhaled air (FE(NO)) is measured at multiple constan...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.22550
更新日期:2012-11-01 00:00:00
abstract:BACKGROUND:Childhood wheeze is an important, well-known risk factor for asthma, yet little is known about the contribution of nocturnal dry cough. We investigated the association of nocturnal dry cough at ages 1-7 years with doctor-diagnosed asthma at 8 years of age, both in the presence and absence of wheeze. METHODS...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23092
更新日期:2015-09-01 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:OBJECTIVE:To evaluate the contents of parent-created emergency tracheostomy kits and identify deficiencies. METHODS:This was an observational study. Data on emergency tracheostomy kits were abstracted for 30 consecutive children who had a tracheostomy tube in situ during an outpatient clinic visit with the Division of...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23740
更新日期:2017-12-01 00:00:00
abstract:INTRODUCTION:Advance care planning (ACP), though recommended, has not been studied in adolescents with cystic fibrosis (CF). This quality improvement project engaged adolescents with advanced CF disease in ACP and assessed patient and CF provider attitudes and preferences regarding ACP discussions and tools. MATERIALS...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23559
更新日期:2016-12-01 00:00:00
abstract::Diffuse panbronchiolitis is a progressive fatal respiratory disease of unknown cause seen predominantly in Southeast Asian adults. We report this condition in a 10-year-old child of Korean birth because of the uncommon presentation at this age and the favorable outcome associated with early diagnosis. Our objective wa...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23176
更新日期:2015-09-01 00:00:00
abstract::A variety of postnatal therapies have been and will be evaluated for prevention or treatment of neonatal chronic lung disease (CLD). A simple method for early selection of the highest risk infants would optimize intervention trials. Our study compared a clinical scoring system for predicting neonatal CLD (defined at 3...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/(sici)1099-0496(199906)27:6<388::aid-ppul5
更新日期:1999-06-01 00:00:00
abstract:OBJECTIVE:Since preventive therapies for bronchopulmonary dysplasia (BPD) are limited we treated preterm infants with azithromycin to decrease the incidence of BPD. METHODS:Infants less than 1,250 g birth weight were randomized to azithromycin or placebo within 12 hr of beginning mechanical ventilation and within 72 h...
journal_title:Pediatric pulmonology
pub_type: 杂志文章,随机对照试验
doi:10.1002/ppul.21352
更新日期:2011-02-01 00:00:00
abstract::Nine young asthmatic children aged 2-5 years underwent methacholine challenge after placebo or albuterol administered by metered dose inhaler through a spacer device (Babyhaler) with a face mask in a double-blind, cross-over, randomized study. The methacholine challenge was performed using chest auscultation to define...
journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/ppul.1950170503
更新日期:1994-05-01 00:00:00
abstract:PURPOSE:To examine the independent association of asthma and obesity and of their co-existence with functional exercise capacity among urban adolescents. METHODS:One hundred eighteen Hispanic- and African-American adolescents including 33 obese asthmatics, 18 normal-weight asthmatics, 38 obese non-asthmatics, and 29 n...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.22547
更新日期:2012-11-01 00:00:00