Abstract:
BACKGROUND:Intermittent hypoxic episodes are common among preterm infants, although longer term consequences on growth pattern and cardiovascular regulation are unclear. Furthermore, the effects of intermittent hypoxia (IH) may depend on the pattern of hypoxia-reoxygenation. OBJECTIVES:We tested the hypothesis that a clustered versus dispersed pattern of repetitive IH during early postnatal life would induce differential long-term alteration in growth and cardiovascular regulation. METHODS:Sprague-Dawley rat pups were exposed to room air or to one of two patterns of IH (clustered vs. dispersed) from 1 to 7 days of life. Body weight was measured daily for the first 8 days and weekly from weeks 2 to 8. Blood pressure (BP) and heart rate were measured weekly from weeks 4 to 8 using a noninvasive tail-cuff method for awake, nonanesthetized animals. RESULTS:Exposure to both patterns of repetitive IH induced early growth restriction followed by later catch-up of growth to controls 3 weeks after completion of IH exposures. IH-exposed rats exhibited a sustained decrease in heart rate regardless of the hypoxic exposure paradigm employed. In contrast, a differential response was seen for arterial pressure; the clustered paradigm was associated with a significantly lower BP versus controls, while the pups exposed to the dispersed paradigm showed no effect on BP. CONCLUSION:We speculate that repetitive IH during a critical developmental window and regardless of IH exposure paradigm contributes to prolonged changes in sympathovagal balance of cardiovascular regulation.
journal_name
Neonatologyjournal_title
Neonatologyauthors
Pozo ME,Cave A,Köroğlu OA,Litvin DG,Martin RJ,Di Fiore J,Kc Pdoi
10.1159/000338096subject
Has Abstractpub_date
2012-01-01 00:00:00pages
107-13issue
2eissn
1661-7800issn
1661-7819pii
000338096journal_volume
102pub_type
杂志文章相关文献
Neonatology文献大全abstract:INTRODUCTION:Oxidative stress in the newborn period may cause cell injury and inflammation if the antioxidant capacity is insufficient. To monitor antioxidant and inflammatory activity we examined by in vivo imaging various strains of luciferase reporter mice whose light-emitting properties were regulated by response e...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000107777
更新日期:2008-01-01 00:00:00
abstract::Rites of passage mark important changes during human life and, for the neonate, its transition from intrauterine life into society. Their original intent was to purify the body from blood and meconium. But the cleansing rites had a spiritual dimension from the very start. When the rites of Mesopotamian, Egyptian, Jewi...
journal_title:Neonatology
pub_type: 历史文章,杂志文章
doi:10.1159/000477955
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Phenobarbitone (PB) is the first-line anti-convulsant for neonatal seizures. The use of peritoneal dialysis (PD) to enhance drug elimination in cases of neonatal PB overdose has not been reported. OBJECTIVE:To report a case of neonatal severe PB toxicity and review the elimination of PB by PD. METHODS:Asse...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000481879
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:Preterm infants with signs of poor perfusion are often treated with volume expansion, although evidence regarding its effect on cerebral perfusion is lacking. Moreover, the effect is questionable in preterm infants with an adequate cerebrovascular autoregulation (CAR). A useful measure to assess perfusion is...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000346383
更新日期:2013-01-01 00:00:00
abstract:BACKGROUND:Refinement of ventilatory techniques remains a challenge given the persistence of chronic lung disease of preterm infants. METHODS:To test the hypothesis that proportional assist ventilation (PAV) will allow to lower the ventilator pressure at equivalent fractions of inspiratory oxygen (FiO(2)) and arterial...
journal_title:Neonatology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1159/000098376
更新日期:2007-01-01 00:00:00
abstract::We describe a case highlighting several controversial and important topics regarding neonatal cardiopulmonary resuscitation (CPR). Current neonatal guidelines recommend a 3:1 compression:ventilation ratio; however, the most effective ratio of delivering chest compressions (CC) remains controversial. We report a case o...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000357609
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Substantial health care resources are expended on standardised formal neonatal resuscitation training (SFNRT) programmes, but their effectiveness has not been proven. OBJECTIVES:To determine whether SFNRT programmes reduce neonatal mortality and morbidity, improve acquisition and retention of knowledge and ...
journal_title:Neonatology
pub_type: 杂志文章,meta分析,评审
doi:10.1159/000443875
更新日期:2016-01-01 00:00:00
abstract::Despite recent advances in the perinatal management of neonatal respiratory distress syndrome (RDS), controversies still exist. We report the updated recommendations of a European panel of expert neonatologists who had developed consensus guidelines after critical examination of the most up-to-date evidence in 2007. T...
journal_title:Neonatology
pub_type: 杂志文章,实务指引
doi:10.1159/000297773
更新日期:2010-06-01 00:00:00
abstract:BACKGROUND:Perinatal hypoxic-ischemic brain damage is a major cause of acute mortality and chronic neurological morbidity in infants and children. Oxidative stress due to free radical formation and the initiation of abnormal oxidative reactions appears to play a key role. Docosahexanoic acid (DHA), a main component of ...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000454982
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Preventing the development of allergic skin disease in children is the best way to treat the disease. OBJECTIVES:Ultraviolet (UV)-free blue light phototherapy has been reported to treat atopic eczema. We evaluated the effect of neonatal phototherapy on allergic skin disease in children. METHODS:We randomly...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000489389
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:Early host-microbe interaction provides important maturational stimuli for the developing immune system. The role of prenatal microbial contact remains elusive. OBJECTIVES:Our aim was to investigate whether microbes in placenta or amniotic fluid affect fetal innate immune gene expression during late pregnan...
journal_title:Neonatology
pub_type: 杂志文章,随机对照试验
doi:10.1159/000339182
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Numerous studies in cultured cells indicate that damage to mitochondrial DNA (mtDNA) dictates cellular responses to oxidant stress, yet the consequences of mtDNA damage have not been studied directly in the preterm lung. OBJECTIVE:We sought to determine whether hyperoxia-induced fetal lung dysmorphogenesis ...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000342632
更新日期:2013-01-01 00:00:00
abstract:BACKGROUND:International neonatal resuscitation guidelines recommend assessing chest excursion when the heart rate is not improving. However, the accuracy in assessing 'adequate' chest excursion lacks objectivity. AIM:It was the aim of this study to test the accuracy in the assessment of 'adequate' chest excursion by ...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000322009
更新日期:2011-01-01 00:00:00
abstract:INTRODUCTION:Cerebellar injury is increasingly recognized as a relevant complication of premature birth. However, the prevalence of reduced cerebellar growth and its consequences for neurodevelopmental outcome in preterm infants without overt brain injury remain to be defined in detail. The aim of this study was to ass...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000502491
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Premature infants with severe bronchopulmonary dysplasia (sBPD) are at risk of pulmonary hypertension (PH). Serum brain natriuretic peptide (BNP) is used to predict disease severity in adult PH. Its diagnostic utility in sBPD-associated PH is unknown. OBJECTIVE:The aim of this paper was to determine the acc...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000499082
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Newborns are susceptible to inflammatory diseases due to defects in clearing activated immune cells from tissues. Therefore, mechanisms have likely evolved to protect neonates from leukocyte-mediated cytotoxicity. Bilirubin has antioxidant activity, and it is possible that it also exerts effects on cellular ...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000343097
更新日期:2013-01-01 00:00:00
abstract:OBJECTIVES:Non-invasive cardiac output monitoring is a potentially useful clinical tool in the neonatal setting. Our aim was to evaluate a new method of non-invasive continuous cardiac output (CO) measurement (NICOM™) based on the principle of bioreactance in neonates. METHODS:In this prospective observational study, ...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000337295
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Closed endotracheal suction interferes with mechanical ventilation received by infants, but the change to ventilation may be different when ventilator modes that target expired tidal volume (VT(e)) are used. OBJECTIVE:To measure airway pressure and tidal volume distal to the endotracheal tube (ETT) during a...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000316854
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:Heart rate (HR) detection in premature infants using electrocardiography (ECG) is challenging due to a low signal amplitude and the fragility of the premature skin. Recently, the dynamic light scattering (DLS) technique has been miniaturized, allowing noninvasive HR measurements with a single sensor. OBJECT...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000506771
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Targeted milrinone treatment for low left ventricular output (LVO) reduces the incidence of acute cardiorespiratory instability following ligation of patent ductus arteriosus (PDA) in preterm infants. Despite this, some infants continue to experience postoperative deterioration. Adrenal insufficiency related...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000350017
更新日期:2013-01-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to evaluate whether a new MRI scoring system for preterm non-haemorrhagic white matter injury (WMI), derived from the analysis of the natural evolution of WMI throughout the neonatal period until term-equivalent age, can be used for outcome prediction. METHODS:Eighty-two infants <36...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000499346
更新日期:2019-01-01 00:00:00
abstract::Noninvasive ventilation for preterm infants at birth has been recommended and universally adopted. The umbilical cord is often clamped immediately in order to provide the support the infant needs for stabilization. However, recent scientific data from experimental studies that involve animals in transition and human s...
journal_title:Neonatology
pub_type: 杂志文章,评审
doi:10.1159/000497421
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:The causes of bronchopulmonary dysplasia (BPD) are multifactorial. Overdistension of the lung (volutrauma) is considered an important contribution. As an alternative to traditional pressure-limited ventilation (PLV), modern neonatal ventilators offer modes which can target a set tidal volume. OBJECTIVES:To ...
journal_title:Neonatology
pub_type: 杂志文章,meta分析,评审
doi:10.1159/000326080
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:Hypoxic-ischaemic encephalopathy is a major cause of neurologic impairment and mortality in neonates. Early knowledge of brain injury is important to guide therapeutic decisions and reliably inform the parents. Increased secretoneurin levels have been detected in adult patients suffering from brain injury an...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000444245
更新日期:2016-01-01 00:00:00
abstract:BACKGROUND:Glucose-6-phosphate dehydrogenase (G6PD) deficiency is a common enzyme deficiency affecting more than 300 million individuals worldwide. Extreme neonatal hyperbilirubinemia, with its severe sequelae of bilirubin neurotoxicity and the potential of death, is the most devastating manifestation of G6PD deficienc...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000489820
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:Surface temperatures of fibreoptic phototherapy pads using a high intensity blue light-emitting diode (LED) light source have not been studied. OBJECTIVES:The aim of this study was to measure the temperature of LED fibreoptic phototherapy pads during phototherapy in a bench-top study, and to determine tempe...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000464318
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Preterm birth contributes significantly to infant mortality and morbidity, including blindness from retinopathy of prematurity (ROP). Access to intensive neonatal care is expanding in many countries, but care is not always optimal, one factor being that nursing is often by inadequately trained nurse assistan...
journal_title:Neonatology
pub_type: 临床试验,杂志文章
doi:10.1159/000362532
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Serum ferritin measurements are used in clinical populations to estimate total body iron stores and the risk of subsequent iron deficiency or overload. The lack of normative newborn serum ferritin concentration data between 23 and 41 weeks has led to difficulty in establishing the incidence and degree of abn...
journal_title:Neonatology
pub_type: 杂志文章,评审
doi:10.1159/000100805
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND:Long-gap esophageal atresia (LGEA) may have clinical and syndromic presentations different from those of esophageal atresia (EA) that affects shorter segments of the esophagus (non-LGEA). This may suggest unique underlying developmental mechanisms. OBJECTIVES:We sought to characterize clinical differences b...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000449241
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Gene expression profiling of the salivary supernatant is emerging as a new and important source of real-time, systemic, biological information. However, existing technologies prevent RNA extraction of small quantities found in neonatal salivary supernatant. OBJECTIVE:The aim of this study was to develop tec...
journal_title:Neonatology
pub_type: 杂志文章
doi:10.1159/000328026
更新日期:2012-01-01 00:00:00