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Asphyxia preterm

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https://www.readbyqxmd.com/read/28330965/greater-sympathoadrenal-activation-with-longer-pre-ventilation-intervals-after-immediate-cord-clamping-increases-hemodynamic-lability-at-birth-in-preterm-lambs
#1
Joseph J Smolich, Kelly R Kenna, Murray David Esler, Sarah E Phillips, Gavin W Lambert
This study tested the hypothesis that varying degrees of hemodynamic fluctuations seen after birth following immediate cord clamping were related to development of asphyxia with longer cord clamp-to-ventilation intervals, resulting in higher perinatal circulating levels of the catecholamines norepinephrine (NE) and epinephrine (Epi), and thus increased heart rate, blood pressures and cardiac contractility after birth. Anesthetized preterm fetal lambs were instrumented with 1) aortic (AoT) and pulmonary trunk (PT) micromanometers to obtain pressures and the maximal rate of pressure rise (dP/dtmax) as a surrogate measure of ventricular contractility, and 2) an AoT catheter to obtain samples for blood gas and catecholamine analyses...
March 22, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28326198/could-perinatal-asphyxia-induce-a-synaptopathy-new-highlights-from-an-experimental-model
#2
REVIEW
María Inés Herrera, Matilde Otero-Losada, Lucas Daniel Udovin, Carlos Kusnier, Rodolfo Kölliker-Frers, Wanderley de Souza, Francisco Capani
Birth asphyxia also termed perinatal asphyxia is an obstetric complication that strongly affects brain structure and function. Central nervous system is highly susceptible to oxidative damage caused by perinatal asphyxia while activation and maturity of the proper pathways are relevant to avoiding abnormal neural development. Perinatal asphyxia is associated with high morbimortality in term and preterm neonates. Although several studies have demonstrated a variety of biochemical and molecular pathways involved in perinatal asphyxia physiopathology, little is known about the synaptic alterations induced by perinatal asphyxia...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28302208/-diagnostic-values-of-prealbumin-and-retinol-binding-protein-for-liver-damage-caused-by-different-degrees-of-neonatal-asphyxia
#3
Yun-Su Zou, Yan Guo, Rui Cheng, Xiao-Guang Zhou, Zhao-Lan Cao
OBJECTIVE: To investigate the diagnostic values of prealbumin (PAB) and retinol-binding protein (RBP) for liver damage caused by mild or severe asphyxia. METHODS: A retrospective analysis was performed on 185 neonates (including 84 premature infants and 101 full-term infants) with asphyxia. Based on the Apgar score, they were divided into two groups: mild asphyxia group (n=150) and severe asphyxia group (n=35). The levels of PAB, RBP, alanine aminotransferase (ALT), and aspartate aminotransferase (AST) were measured and compared...
March 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28300820/children-born-at-32-to-35-weeks-with-birth-asphyxia-and-later-cerebral-palsy-are-different-from-those-born-after-35-weeks
#4
J Garfinkle, P Wintermark, M I Shevell, M Oskoui
OBJECTIVE: The objectives of this study were to (1) establish the proportion of cerebral palsy (CP) that occurs with a history suggestive of birth asphyxia in children born at 32 to 35 weeks and (2) evaluate their characteristics in comparison with children with CP born at ⩾36 weeks with such a history. STUDY DESIGN: Using the Canadian CP Registry, children born at 32 to 35 weeks of gestation with CP with a history suggestive of birth asphyxia were compared with corresponding ⩾36 weeks of gestation children...
March 16, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28267854/association-between-maternal-body-mass-index-in-early-pregnancy-and-incidence-of-cerebral-palsy
#5
Eduardo Villamor, Kristina Tedroff, Mark Peterson, Stefan Johansson, Martin Neovius, Gunnar Petersson, Sven Cnattingius
Importance: Maternal overweight and obesity are associated with increased risks of preterm delivery, asphyxia-related neonatal complications, and congenital malformations, which in turn are associated with increased risks of cerebral palsy. It is uncertain whether risk of cerebral palsy in offspring increases with maternal overweight and obesity severity and what could be possible mechanisms. Objective: To study the associations between early pregnancy body mass index (BMI) and rates of cerebral palsy by gestational age and to identify potential mediators of these associations...
March 7, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28263524/foetal-asphyxia-as-a-strong-stimulator-of-the-sympathetic-nervous-system-in-the-brain-case-report
#6
Ingrid Brucknerová, Eduard Ujházy
The aim of the study was to analyse case report of prenatally unknown asphyxia of the foetus (a preterm newborn from the second pregnancy delivered by urgent caesarean section in 31st gestational week; birth weight 850 grams, birth length 41 cm, value of Apgar score 7/8) with signs of respiratory insufficiency immediately after birth with hypotonicity. The authors present the case of postnatal at the 1st day of life assessed cystic malformation in the brain of premature newborn. They emphasize the importance of detailed prenatal investigation as most important in preventing prenatal asphyxia and consequent complications...
December 18, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28260850/the-role-of-serum-apelin-in-retinopathy-of-prematurity
#7
Yasser F Ali, Salah El-Morshedy, Abdulbasit Abdulhalim Imam, Nasser Ismai A Abdelrahman, Riad M Elsayed, Usama M Alkholy, Nermin Abdalmonem, Mohammed M Shehab
OBJECTIVE: To evaluate the role of serum apelin as a diagnostic tool in retinopathy of prematurity (ROP) disease. PATIENTS AND METHODS: Thirty-eight preterm infants (60% male) with gestational age ranging from 30 to 36 weeks admitted to the neonatal intensive care unit, KJO Hospital, Saudi Arabia with proven diagnosis of ROP were included in the study. In addition, 27 preterm infants without ROP served as controls. All newborn infants in the study were subjected to adequate history taking, full clinical examination, and fundus examination by indirect ophthalmoscope (at 4-6 weeks) as well as determination of serum apelin at birth and at 4-6 weeks of age...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28238681/early-amplitude-integrated-electroencephalography-for-monitoring-neonates-at-high-risk-for-brain-injury
#8
Gabriel Fernando Todeschi Variane, Maurício Magalhães, Renato Gasperine, Heitor Castelo Branco Rodrigues Alves, Thiago Luiz Pereira Donoso Scoppetta, Rodrigo de Jesus Gonçalves Figueredo, Francisco Paulo Martins Rodrigues, Alexandre Netto, Marcelo Jenne Mimica, Clery Bernardi Gallacci
OBJECTIVE: This study aimed to correlate amplitude-integrated electroencephalography findings with early outcomes, measured by mortality and neuroimaging findings, in a prospective cohort of infants at high risk for brain injury in this center in Brazil. METHODS: This blinded prospective cohort study evaluated 23 preterm infants below 31 weeks of gestational age and 17 infants diagnosed with hypoxic-ischemic encephalopathy secondary to perinatal asphyxia, with gestational age greater than 36 weeks, monitored with amplitude-integrated electroencephalography in a public tertiary center from February 2014 to January 2015...
February 23, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28237510/retrospective-evaluation-of-a-national-guideline-to-prevent-neonatal-hypoglycemia
#9
Annett Helleskov Rasmussen, Sonja Wehberg, Jesper Fenger-Groen, Henrik Thybo Christesen
BACKGROUND: Hypoglycemia is common in neonates and may cause adverse neurological outcomes. Guidelines should aim to prevent repeated hypoglycemic episodes in risk groups, but they are not usually stratified according to the severity of hypoglycemia risk, which may lead to inappropriate and redundant interventions. We evaluated the effect of a national prevention guideline stratified according to mild, moderate, and severe risks of hypoglycemia. METHODS: From national registers, a population cohort of 22,725 neonates was identified retrospectively before and after implementation of a national guideline...
January 24, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/28222717/causes-of-death-in-very-preterm-infants-cared-for-in-neonatal-intensive-care-units-a-population-based-retrospective-cohort-study
#10
Tim Schindler, Louise Koller-Smith, Kei Lui, Barbara Bajuk, Srinivas Bolisetty
BACKGROUND: While there are good data to describe changing trends in mortality and morbidity rates for preterm populations, there is very little information on the specific causes and pattern of death in terms of age of vulnerability. It is well established that mortality increases with decreasing gestational age but there are limited data on the specific causes that account for this increased mortality. The aim of this study was to establish the common causes of hospital mortality in a regional preterm population admitted to a neonatal intensive care unit (NICU)...
February 21, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28202129/-concerns-about-neonates-discharged-against-medical-advice-from-the-neonatal-intensive-care-unit
#11
Ning-Ning Qiao, Ming-Hua Gong, Zhen-Ai Jin
Discharge against medical advice (DAMA) conflicts with the purpose of disease treatment in children. Some research has shown that there are high proportions of extremely preterm infants and infants with asphyxia or congenital malformation in neonates with DAMA. This suggests that the sustainable development of neonatology needs cooperation and co-development with obstetrics, neonatal surgery, and radiology to reduce the rate of DAMA. With reference to the current status of research in both China and other countries, this article reviews the causes for DAMA and the strategies for reducing the rate of DAMA, in order to provide a theoretical basis for effectively reducing the rate of DAMA from the neonatal intensive care unit, improving treatment outcomes of the neonates, and increasing hospitals' comprehensive benefits...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28202111/-mortality-rate-and-cause-of-death-in-hospitalized-neonates-an-analysis-of-480-cases
#12
Feng-Dan Xu, Xiang-Yong Kong, Zhi-Chun Feng
OBJECTIVE: To investigate the mortality rate and the cause of death of hospitalized neonates. METHODS: The clinical data of 480 neonates who died between January 2008 and December 2014 were collected. The mortality rates of neonates with different gestational ages, birth weights, sexes, and ages in days were analyzed. The abnormal perinatal factors, cause of death, and death grade were summarized. RESULTS: Among the 41 910 hospitalized neonates, 480 (1...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28202110/-neurodevelopmental-features-of-preterm-infants-at-the-corrected-age-of-1-year
#13
Mei Zhang, Hong-Yan Qian, Xiao-Ni Kuang, Zhong Yu, Lin Tan, Chan Xia
OBJECTIVE: To investigate the neurodevelopmental level of preterm infants at the corrected age of 1 year and the effect of complications on neurodevelopment. METHODS: The clinical data and follow-up data of hospitalized preterm infants were retrospectively studied. The Bayley Scales of Infant Development was used to assess the neurodevelopmental level. Preterm infants were divided into groups according to gestational age, birth weight, and the presence or absence of complications...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28161509/25-years-of-research-on-global-asphyxia-in-the-immature-rat-brain
#14
REVIEW
M Barkhuizen, D L A van den Hove, J S H Vles, H W M Steinbusch, B W Kramer, A W D Gavilanes
Hypoxic-ischemic encephalopathy remains a common cause of brain damage in neonates. Preterm infants have additional complications, as prematurity by itself increases the risk of encephalopathy. Currently, therapy for this subset of asphyxiated infants is limited to supportive care. There is an urgent need for therapies in preterm infants - and for representative animal models for preclinical drug development. In 1991, a novel rodent model of global asphyxia in the preterm infant was developed in Sweden. This method was based on the induction of asphyxia during the birth processes itself by submerging pups, still in the uterine horns, in a water bath followed by C-section...
February 1, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28139875/global-network-for-women-s-and-children-s-health-research-probable-causes-of-stillbirth-in-low-and-middle-income-countries-using-a-prospectively-defined-classification-system
#15
E M McClure, A Garces, S Saleem, J L Moore, C L Bose, F Esamai, S S Goudar, E Chomba, M Mwenechanya, O Pasha, A Tshefu, A Patel, S M Dhaded, C Tenge, I Marete, M Bauserman, S Sunder, B S Kodkany, W A Carlo, R J Derman, P L Hibberd, E A Liechty, K M Hambidge, N F Krebs, M Koso-Thomas, M Miodovnik, D D Wallace, R L Goldenberg
OBJECTIVE: We sought to classify causes of stillbirth for six low-middle-income countries using a prospectively defined algorithm. DESIGN: Prospective, observational study. SETTING: Communities in India, Pakistan, Guatemala, Democratic Republic of Congo, Zambia and Kenya. POPULATION: Pregnant women residing in defined study regions. METHODS: Basic data regarding conditions present during pregnancy and delivery were collected...
January 31, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28110393/nitric-oxide-production-in-the-striatum-and-cerebellum-of-a-rat-model-of-preterm-global-perinatal-asphyxia
#16
M Barkhuizen, W D J Van de Berg, J De Vente, C E Blanco, A W D Gavilanes, H W M Steinbusch
Encephalopathy due to perinatal asphyxia (PA) is a major cause of neonatal morbidity and mortality in the period around birth. Preterm infants are especially at risk for cognitive, attention and motor impairments. Therapy for this subgroup is limited to supportive care, and new targets are thus urgently needed. Post-asphyxic excitotoxicity is partially mediated by excessive nitric oxide (NO) release. The aims of this study were to determine the timing and distribution of nitric oxide (NO) production after global PA in brain areas involved in motor regulation and coordination...
April 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28094441/sex-drugs-and-rock-and-roll-tales-from-preterm-fetal-life
#17
Laura Bennet
Premature fetuses and babies are at greater risk of mortality and morbidity than their term counterparts. The underlying causes are multifactorial, but include exposure to hypoxia. Immaturity of organs and their functional control may impair the physiological defence responses to hypoxia and the preterm fetal responses, or lack thereof, to moderate hypoxia appear to support this concept. However, as this review demonstrates, despite immaturity, the preterm fetus responds to asphyxia in a qualitatively similar manner to that seen at term...
March 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28093008/hearing-loss-associated-gene-detection-in-neonatal-intensive-care-unit
#18
S M Yang, Ying Liu, C Liu, A H Yin, Y F Wu, X E Zheng, H M Yang, J Yang
OBJECTIVE: To investigate the frequency and mutation spectrum of hearing loss associated gene mutation in Neonatal Intensive Care Unit (NICU). METHODS: Neonates (n = 2305) admitted to NICU were enrolled in this study. Nine prominent hearing loss associated genes, GJB2 (35 del G, 176 del 16,235 del C, 299 del AT), GJB3 (538 C > T), SLC26A4 (IVS7-2A > G, 2168 A > G) and mtDNA 12S rRNA(1555 A > G, 1494 C > T), were detected. RESULT: There were 73 cases hearing-loss-associated gene mutation among 2305 cases, the mutation frequency was 3...
January 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28074213/-intrahepatic-cholestasis-of-pregnancy-rare-but-important
#19
REVIEW
A E Kremer, K Wolf, S Ständer
Intrahepatic cholestasis of pregnancy (ICP) is a liver-specific disorder occurring in approximately 0.5-2.0% of all pregnancies with a considerable variation in certain ethnic groups. ICP usually runs a benign course for the mother and is characterized by maternal pruritus mainly in the third trimester, elevated transaminases and fasting total serum bile salts and increased fetal adverse events. The etiology of ICP is only partially understood but seems to be multifactorial. Cholestasis-inducing effects of certain female sex hormones and their metabolites play an important role in genetically susceptible women...
January 10, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28056921/bifidobacterium-adolescentis-protects-against-necrotizing-enterocolitis-and-upregulates-tollip-and-sigirr-in-premature-neonatal-rats
#20
Wenshen Wu, Yanli Wang, Jingjing Zou, Fang Long, Huiheng Yan, Lijuan Zeng, Yunbin Chen
BACKGROUND: Necrotizing enterocolitis (NEC) is a serious gastrointestinal disorder that is often seen in premature infants. Probiotics decrease the risk of NEC; however, the mechanism by which probiotics work is not clear. The goal of this study was to evaluate the preventive effect of Bifidobacterium adolescentis in an NEC rat model. METHODS: Sprague-Dawley neonatal rats were obtained by caesarean section after 20-21 d gestation and randomly divided into the following 3 groups: dam fed (DF), formula fed (FF), and formula + B...
January 5, 2017: BMC Pediatrics
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