Abstract:
:Introduction: Decreased respiratory muscle strength in patients with cystic fibrosis (CF) may cause progressive exercise intolerance during cardiopulmonary exercise testing (CPET), and may contribute to the development of chronic respiratory insufficiency. The aim of this study is to evaluate exercise tolerance during CPET of children and adults with clinically stable CF who exhibit different respiratory muscle strength. Methods: Sixty-nine clinically stable CF subjects aged 8-33 years underwent spirometry, body plethysmography, CPET, and respiratory muscle strength measurement. Respiratory muscle strength was measured using maximal inspiratory pressures (Pimax) and maximal expiratory pressures (Pemax). Participants were stratified into three groups according to Pimax values:below normal (≤80% predicted), normal (81-100% predicted), and above normal (>100% predicted). A similar stratification of participants was made according to Pemax values. The oxygen consumption on peak load (VO2peak) was expressed relative to BM (VO2peak/kg), relative to BM raised by the exponent of 0.67 (VO2peak/kg0.67) and as log-linear adjustment of VO2peak (VO2peak/kg-alo). Results: Participants with low Pemax values had a lower mean maximum load per kilogram/predicted (Wmax; p = 0.001) VO2peak/kg (p = 0.006), VO2peak/kg0.67 (p = 0.038) and VO2peak/kg-alo (p = 0.001). There were no significant differences in exercise tolerance parameters with regard to Pimax values. Stepwise multiple linear regressions confirmed that Pemax (B = 24.88, β = 0.48, p < 0.001) was the most powerful predictor of Wmax. There were no statistically significant differences in age, lung function parameters, exacerbation score, or respiratory muscle strength according to gender. Conclusions: In subjects with clinically stable CF, expiratory muscle strength is associated with a decrease in exercise performance during CPET and can predict exercise intolerance. Increase in expiratory muscle strength by patient specific rehabilitation protocols would result in improvement of exercise tolerance.
journal_name
Front Pediatrjournal_title
Frontiers in pediatricsauthors
Sovtic A,Minic P,Markovic-Sovtic G,Trajkovic GZdoi
10.3389/fped.2018.00244subject
Has Abstractpub_date
2018-09-04 00:00:00pages
244issn
2296-2360journal_volume
6pub_type
杂志文章abstract::Background: Amount of parenchymal involvement in patients with interstitial pneumonia Covid-19 related, seems to be associated with a worse prognosis. Nowadays 3D reconstruction imaging is expanding its role in clinical medical practice. We aimed to use 3D lung reconstruction of a young lady affected by Sars-CoV2 infe...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2020.00453
更新日期:2020-08-05 00:00:00
abstract::Background: Necrotizing enterocolitis (NEC) is an often-fatal neonatal disease involving intestinal hyperinflammation leading to necrosis. Despite ongoing research, (1) conflicting results and (2) comorbidities of NEC patients make early NEC detection challenging and may complicate therapy development. Most research s...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2020.593926
更新日期:2021-01-06 00:00:00
abstract::Objective: Lactate is often used as a surrogate marker of inappropriate oxygen delivery. It has been shown that hyperlactatemia is associated with worse clinical outcome in children after cardiac surgery. The purpose of this study is to evaluate the association of hyperlactatemia, low systemic oxygen delivery, and hyp...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2020.00332
更新日期:2020-06-23 00:00:00
abstract::Background: Timely diagnosis of child physical abuse is of paramount importance. The added value of bone scintigraphy (BS) after a negative radiological skeletal survey (RSS) in children with suspected physical abuse has never been evaluated. Objective: The objective of this study was to assess the extent to which BS ...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2020.00498
更新日期:2020-09-25 00:00:00
abstract::The glomerular basement membrane (GBM) is a specialized structure with a significant role in maintaining the glomerular filtration barrier. This GBM is formed from the fusion of two basement membranes during development and its function in the filtration barrier is achieved by key extracellular matrix components inclu...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章,评审
doi:10.3389/fped.2018.00011
更新日期:2018-01-29 00:00:00
abstract::Antiphospholipid syndrome (APS) is a rare condition in childhood, but even more in the neonatal age. Most neonatal cases are considered a passively acquired autoimmune disease, due to a transplacental passage of maternal antiphospholipid antibodies (aPL) from mothers with primary or secondary APS or, more often, from ...
journal_title:Frontiers in pediatrics
pub_type:
doi:10.3389/fped.2020.596386
更新日期:2020-11-24 00:00:00
abstract:Background:Acute respiratory illnesses with cough (ARIwC) are predominant causes of morbidity in Australian Indigenous children; however, data on disease burden in urban communities are scarce. This study aimed to determine the incidence of ARIwC, the predictors of recurrent (≥4 episodes) ARIwC, and development of chro...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2017.00228
更新日期:2017-10-31 00:00:00
abstract:INTRODUCTION:Hypospadias is a male congenital condition where the opening of the urethral meatus is not located in the typical anatomical position. It has been a challenge for empirical studies to ascertain the level of concordance of opinion among parents and urologists with regard to surgical outcomes according to hy...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2016.00002
更新日期:2016-01-25 00:00:00
abstract::The current study investigated the differences between intact and non-intact families in family processes, including systematic family functioning, parental behavioral control, parental psychological control, and parent-child relational qualities. The participants were 3,328 Secondary One students, with a mean age of ...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2014.00149
更新日期:2015-01-29 00:00:00
abstract::Therapeutic strategies for severe hand, foot, and mouth disease (HFMD) are currently either inconsequent or deficient in evidence. We retrospectively surveyed HFMD outbreaks in Xiangyang from June 2008 to December 2013. HFMD is staged from I to V according to clinical severity. Severe HFMD is defined as a case involvi...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2020.00323
更新日期:2020-07-10 00:00:00
abstract::Pakistan is still fighting to overcome vaccine-preventable diseases (VPD). The vaccination coverage in rural children remains unsatisfactory amid various barriers including price, hesitancy, and low level of awareness. COVID-19 has decreased the immunization rate in Pakistan due to restricted movements, shortage of va...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2020.613433
更新日期:2020-12-10 00:00:00
abstract::Childhood asthma is actually defined as a heterogeneous disease, including different clinical variants and partially sharing similar immune mechanisms. Asthma management is mainly focused on maintaining the control of the disease and reducing the risk of adverse outcomes. Most children achieve good control with standa...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章,评审
doi:10.3389/fped.2019.00289
更新日期:2019-07-12 00:00:00
abstract::Background: The MTUS1 gene encodes a microtubule-associated protein involved in multiple processes including cell polarity and microtubule balance during myocardial development. Aims: To investigate the association between a de novo c. 2617A->C mutation in MTUS1 (NM_001001924.2) and non-compaction of ventricular myoca...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2019.00247
更新日期:2019-07-02 00:00:00
abstract::Background: Placenta shows high transcription levels of human endogenous retroviruses (HERVs) that are overexpressed during embryonic and fetal development. Methods: In order to gather further information on the degree of HERV activation in maternal and fetal tissues we assessed the transcription levels of pol genes o...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2020.00244
更新日期:2020-05-14 00:00:00
abstract::Acute myeloid leukemia (AML) is the second most common leukemia of childhood and is associated with high rates of chemotherapy resistance and relapse. Clinical outcomes for children with AML treated with maximally intensive multi-agent chemotherapy lag far behind those of children with the more common acute lymphoblas...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章,评审
doi:10.3389/fped.2017.00248
更新日期:2017-11-20 00:00:00
abstract::Cerebral palsy (CP) is the most common cause of disability in childhood. Respiratory illness is the most common cause of mortality, morbidity, and poor quality of life in the most severely affected children. Respiratory illness is caused by multiple and combined factors. This review describes these factors and discuss...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章,评审
doi:10.3389/fped.2020.00333
更新日期:2020-06-24 00:00:00
abstract::While awareness and understanding of concussion have improved drastically, post-concussion management in academic settings is still at its infancy. The aim of the study was to examine to what extent concussion influences academic performance and to whether there would be a difference in concussion effects on academic ...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2020.00057
更新日期:2020-03-04 00:00:00
abstract::The first successful total right heart bypass via atriopulmonary anastomosis (APA) were reported in 1971 for patients with tricuspid atresia. At the Children's Hospital of Buenos Aires, the cohort of such procedures started in July, when the first fenestrated right heart by pass was performed, with the interposition o...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章,评审
doi:10.3389/fped.2013.00045
更新日期:2013-12-18 00:00:00
abstract::Failure of statural growth is one of the major long-term sequelae of chronic kidney disease (CKD) in children. In recent years effective therapeutic strategies have become available that lead to evidence based practice recommendations. To assess the current growth performance of European children and adolescents with ...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2019.00278
更新日期:2019-07-05 00:00:00
abstract::Although antibiotics confer significant health benefits in treating or preventing bacterial infections, an accumulating wealth of evidence illustrates their detrimental effect on host-microbiota homeostasis, posing a serious menace to the global public health. In recent years, it is becoming evident that infants, who ...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章,评审
doi:10.3389/fped.2020.544460
更新日期:2020-10-15 00:00:00
abstract::Background: Necrotizing enterocolitis (NEC) is the most common life-threatening gastrointestinal condition among very and extremely preterm infants. Stem cell therapy has shown some promising protective effects in animal models of intestinal injury, including NEC, but no systematic review has yet evaluated the preclin...
journal_title:Frontiers in pediatrics
pub_type:
doi:10.3389/fped.2020.578984
更新日期:2020-12-09 00:00:00
abstract::Autosomal dominant hyper-IgE syndrome caused by mutations in the transcription factor STAT3 (AD-HIES) is characterized by a collection of immunologic and non-immune features including eczema, recurrent infections, elevated IgE levels, and connective tissue anomalies. We report the case of a Qatari child with a history...
journal_title:Frontiers in pediatrics
pub_type:
doi:10.3389/fped.2019.00130
更新日期:2019-04-24 00:00:00
abstract::Premature births continue to rise globally with a corresponding increase in various morbidities among this population. Rates of respiratory distress syndrome and the consequent development of Bronchopulmonary Dysplasia (BPD) are highest among the extremely preterm infants. The majority of extremely low birth weight pr...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章,评审
doi:10.3389/fped.2020.00214
更新日期:2020-05-08 00:00:00
abstract::Excessive oxygen (O2) can cause tissue injury, scarring, aging, and even death. Our laboratory is studying O2-sensing pulmonary neuroendocrine cells (PNECs) and the PNEC-derived product gastrin-releasing peptide (GRP). Reactive oxygen species (ROS) generated from exposure to hyperoxia, ozone, or ionizing radiation (RT...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章,评审
doi:10.3389/fped.2014.00072
更新日期:2014-07-18 00:00:00
abstract::Pontocerebellar hypoplasia (PCH) type 2 is a very rare autosomal recessive neurodegenerative disorder with prenatal onset that disrupts brain development. We present three patients (two siblings and one unrelated child) with PCH 2 linked to the most common mutation c.919G > T (p.Ala307Ser) in TSEN54 gene. The disease ...
journal_title:Frontiers in pediatrics
pub_type:
doi:10.3389/fped.2018.00001
更新日期:2018-01-23 00:00:00
abstract::The term osteopetrosis describes a group of rare hereditary diseases of the skeleton, characterized by an increase in bone density, caused by a defect in the development or function of osteoclasts. It comprises a clinically and genetically heterogeneous conditions ranging from infantile onset life-threatening forms to...
journal_title:Frontiers in pediatrics
pub_type:
doi:10.3389/fped.2018.00213
更新日期:2018-07-31 00:00:00
abstract::The solute carrier family 16 member 1 (SLC16A1) gene encodes for monocarboxylate transporter 1 (MCT1) that mediates the movement of monocarboxylates, such as lactate and pyruvate across cell membranes. Inactivating recessive homozygous or heterozygous mutations in the SLC16A1 gene were described in patients with recur...
journal_title:Frontiers in pediatrics
pub_type:
doi:10.3389/fped.2019.00299
更新日期:2019-07-18 00:00:00
abstract::Severe Combined Immunodeficiencies (SCID) are a heterogeneous group of monogenetic diseases. We describe the typical clinical presentation of patients with SCID as well as basic principles in diagnosis and therapy by hematopoietic stem cell transplantation. Therapeutic strategies may differ between subtypes and the in...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章,评审
doi:10.3389/fped.2019.00481
更新日期:2019-11-19 00:00:00
abstract:BACKGROUND:Pulmonary hypertension (PH) is frequently associated with an increase in sympathetic tone. This may adversely affect cardiac autonomic control. Knowledge about the clinical impact of autonomic dysfunction in patients with PH is limited. We aimed to assess whether parameters of heart rate variability (HRV) ar...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2015.00063
更新日期:2015-07-07 00:00:00
abstract:BACKGROUND:Phenylketonuria (PKU) is caused by the inherited defect of the phenylalanine hydroxylase enzyme, which converts phenylalanine (Phe) into tyrosine (Tyr). Neonatal screening programs and early treatment have radically changed the natural history of PKU. Nevertheless, an increased risk of neurocognitive and psy...
journal_title:Frontiers in pediatrics
pub_type: 杂志文章
doi:10.3389/fped.2014.00057
更新日期:2014-06-23 00:00:00