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Blood pressure preterm

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https://www.readbyqxmd.com/read/28428252/low-frequency-blood-pressure-oscillations-and-inotrope-treatment-failure-in-premature-infants
#1
Zachary Andrew Vesoulis, Jessica Hao, Christopher McPherson, Nathalie El Ters, Amit M Mathur
BACKGROUND: The underlying mechanism as to why some hypotensive preterm infants do not respond to inotropic medications remains unclear. For these infants, we hypothesize that impaired vasomotor function is a significant factor and is manifested through a decrease in low-frequency blood pressure variability across regulatory components of vascular tone. METHODS: Infants born 28 weeks estimated gestational age underwent prospective recording of mean arterial blood pressure (MABP) for 72h after birth...
April 20, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28427056/blood-pressure-during-the-immediate-neonatal-transition-is-the-mean-arterial-blood-pressure-relevant-for-the-cerebral-regional-oxygenation
#2
Nariae Baik, Berndt Urlesberger, Bernhard Schwaberger, Alexander Avian, Lukas Mileder, Georg M Schmölzer, Gerhard Pichler
BACKGROUND: Measurement of mean arterial blood pressure (MABP) is feasible during neonatal transition. OBJECTIVE: The objective of this study was to investigate a potential influence of MABP on the cerebral regional oxygen saturation (crSO2) in preterm and term infants during the immediate neonatal transition. MATERIALS AND METHODS: Preterm and term infants were included in this observational study. The crSO2 was measured by near-infrared spectroscopy with the INVOS 5100C (Somanetics Corp...
April 21, 2017: Neonatology
https://www.readbyqxmd.com/read/28421173/cerebral-autoregulation-brain-injury-and-the-transitioning-premature-infant
#3
REVIEW
Zachary A Vesoulis, Amit M Mathur
Improvements in clinical management of the preterm infant have reduced the rates of the two most common forms of brain injury, such as severe intraventricular hemorrhage and white matter injury, both of which are contributory factors in the development of cerebral palsy. Nonetheless, they remain a persistent challenge and are associated with a significant increase in the risk of adverse neurodevelopment outcomes. Repeated episodes of ischemia-reperfusion represent a common pathway for both forms of injury, arising from discordance between systemic blood flow and the innate regulation of cerebral blood flow in the germinal matrix and periventricular white matter...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28419371/sleep-a-window-into-autonomic-control-in-children-born-preterm-and-growth-restricted
#4
Stephanie R Yiallourou, Euan M Wallace, Christie Whatley, Alexsandria Odoi, Samantha Hollis, Aidan J Weichard, Jayan Shivanandhan Muthusamy, Suraj Varma, James Cameron, Om Narayan, Rosemary Sc Horne
Study Objectives: Preterm birth and fetal growth restriction (FGR) are both associated with risk of hypertension in adulthood. Mechanisms leading to this pathology are unclear. In children aged 5-12 years, who were born preterm and FGR, we used sleep as a tool to assess autonomic control with assessment of cardiovascular structure and function. Methods: 18 children born preterm and FGR, 15 born preterm with appropriate birth weights (AGA) and 20 AGA term-born children were studied...
April 17, 2017: Sleep
https://www.readbyqxmd.com/read/28407822/-a-preliminary-study-of-renal-function-in-small-for-gestational-age-infants-at-early-stage-after-birth
#5
Jing Zhu, Yan Xing, Xin-Li Wang
OBJECTIVE: To investigate the renal function of small-for-gestational-age (SGA) infants at the early stage after birth. METHODS: A total of 40 preterm SGA infants, 33 full-term SGA infants, 80 preterm appropriate-for-gestational-age (AGA) infants, and 33 full-term AGA infants were included in this study. The following indices were compared between the SGA infants and AGA infants within 48 hours after admission: blood urea nitrogen (BUN), serum creatinine (SCr), estimated glomerular filtration rate (eGFR), blood pressure, urine volume per body weight, and proteinuria...
April 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28407656/high-blood-pressure-during-pregnancy-is-not-a-protective-factor-for-preterm-infants-with-very-low-birth-weight-a-case-control-study
#6
Annibal Tagliaferri Sabino, Eduardo de Souza, Ana Lucia Goulart, Adriana Martins de Lima, Nelson Sass
Objective To evaluate whether the presence of maternal blood pressure reduces the risks of morbidity, perinatal mortality and morbidity at 24 months of age in very low birth weight infants (VLBWIs) compared with a control group. Methods A retrospective, observational, case-control study. Total 49 VLBWIs were allocated to the study group, called the maternal arterial hypertension group (AHG), and matched with 44 in the control group (CG). The infants were assessed during hospitalization and at 12 and 24 months corrected age at a specialized clinic...
April 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28399534/retinopathy-of-prematurity-is-associated-with-increased-systolic-blood-pressure-in-adults-who-were-born-preterm
#7
Anna Kistner, Lena Jacobson, Jan Östergren, Ann Hellström
BACKGROUND: Adults born preterm are at risk of developing cardiovascular morbidities. OBJECTIVE: The aim of this study was to evaluate the relationship between retinopathy of prematurity (ROP) and blood pressure (BP) and salivary cortisol levels during adulthood. METHODS: Sixty-nine subjects (mean age 22.6 years) were included. Subjects were adults who were: (a) ex-preterm infants with severe ROP (n = 22), born at gestational age (GA) <30 weeks with a birth weight (BW) <1,000 g, (b) ex-preterm infants with no/mild ROP (n = 21), born at GA <28 weeks with a BW <1,000 g, or (c) full-term controls (n = 26)...
April 12, 2017: Neonatology
https://www.readbyqxmd.com/read/28391546/association-among-prematurity-30%C3%A2-weeks-gestational-age-blood-pressure-urinary-albumin-calcium-and-phosphate-in-early-childhood
#8
Namrata Vashishta, Vidya Surapaneni, Sanjay Chawla, Gaurav Kapur, Girija Natarajan
BACKGROUND: There is a paucity of data on blood pressures (BP), urinary albumin, and mineral excretion in early childhood in contemporary cohorts of extremely low gestational age (GA) neonates. Our aim was to compare BPs and the urinary excretion of albumin, calcium, and phosphate in preterm and term-born cohorts in early childhood. METHODS: This was a prospective observational study conducted at a single center, involving children <5 years age, born preterm (GA <30 weeks) or at term (≥37 weeks' GA)...
April 8, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28388597/fetal-growth-restricted-preterm-infants-display-compromised-autonomic-cardiovascular-control-on-the-first-postnatal-day-but-not-during-infancy
#9
Emily Cohen, Flora Y Wong, Euan M Wallace, Joanne C Mockler, Alexsandria Odoi, Samantha Hollis, Rosemary S C Horne, Stephanie R Yiallourou
BACKGROUND: Fetal growth restriction (FGR) is associated with increased perinatal mortality and long-term cardiovascular and neurodevelopmental sequelae. We hypothesized that FGR impacts on the development of autonomic heart rate and blood pressure control, contributing to unfavorable short- and long-term outcomes following FGR. METHODS: We studied 25 preterm FGR and 22 preterm and 19 term appropriate-for-gestational-age (AGA) infants. Preterm neonates were studied on postnatal Day 1 and all infants were studied at 1 and 6 months post-term age...
April 7, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28384118/simple-approach-based-on-maternal-characteristics-and-mean-arterial-pressure-for-the-prediction-of-preeclampsia-in-the-first-trimester-of-pregnancy
#10
Rebeca Silveira Rocha, Júlio Augusto Gurgel Alves, Sammya Bezerra Maia E Holanda Moura, Edward Araujo Júnior, Alberto Borges Peixoto, Eduardo Félix Martins Santana, Wellington P Martins, Camila Teixeira Moreira Vasconcelos, Fabricio Da Silva Costa, Mônica Oliveira Batista Oriá
AIM: To propose a simple model for predicting preeclampsia (PE) in the 1st trimester of pregnancy on the basis of maternal characteristics (MC) and mean arterial pressure (MAP). METHODS: A prospective cohort was performed to predict PE between 11 and 13+6 weeks of gestation. The MC evaluated were maternal age, skin color, parity, previous PE, smoking, family history of PE, hypertension, diabetes mellitus and body mass index (BMI). Mean arterial blood pressure (MAP) was measured at the time of the 1st trimester ultrasound...
April 6, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28372510/delayed-cord-clamping-and-inotrope-use-in-preterm-infants
#11
Zachary A Vesoulis, Janine Rhoades, Pournika Muniyandi, Shayna Conner, Alison G Cahill, Amit M Mathur
OBJECTIVE: To evaluate the impact of delayed cord clamping (DCC) on need for inotropic support and mean arterial blood pressure (MABP). METHODS: This is a single-center, prospective case-control study of premature infants, born <32 weeks gestation, who underwent DCC in comparison to a matched control group who underwent immediate cord clamping (ICC). The primary outcomes were the differences in MABP and inotropic medication used over the first week of life. Secondary outcomes included the admission hemoglobin, need for blood transfusion, and rates of intraventricular hemorrhage (IVH)...
April 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28356148/prediction-of-complications-in-early-onset-pre-eclampsia-prep-development-and-external-multinational-validation-of-prognostic-models
#12
Shakila Thangaratinam, John Allotey, Nadine Marlin, Julie Dodds, Fiona Cheong-See, Peter von Dadelszen, Wessel Ganzevoort, Joost Akkermans, Sally Kerry, Ben W Mol, Karl G M Moons, Richard D Riley, Khalid S Khan
BACKGROUND: Unexpected clinical deterioration before 34 weeks gestation is an undesired course in early-onset pre-eclampsia. To safely prolong preterm gestation, accurate and timely prediction of complications is required. METHOD: Women with confirmed early onset pre-eclampsia were recruited from 53 maternity units in the UK to a large prospective cohort study (PREP-946) for development of prognostic models for the overall risk of experiencing a complication using logistic regression (PREP-L), and for predicting the time to adverse maternal outcome using a survival model (PREP-S)...
March 30, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28352342/different-ventilation-modes-combined-with-ambroxol-in-the-treatment-of-respiratory-distress-syndrome-in-premature-infants
#13
Bin Zhou, Jing-Fang Zhai, Jie-Bin Wu, Bao Jin, Yan-Yan Zhang
The aim of the present study was to compare the effectiveness of different modes of mechanical ventilation in combination with secretolytic therapy with ambroxol in premature infants with respiratory distress syndrome. Seventy-three premature infants with hyaline membrane disease (HMD) (stage III-IV), also known as respiratory distress syndrome, who were supported by mechanical ventilation in the neonatal intensive care unit (NICU) of Xuzhou Central Hospital, were involved in the present study, between January 2013 and February 2015...
February 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28348141/venous-lactate-ph-and-partial-pressure-of-carbon-dioxide-levels-as-prognostic-indicators-in-110-premature-calves-with-respiratory-distress-syndrome
#14
R Yildiz, U Aydogdu, H Guzelbektes, A Coskun, I Sen
Hyperlactatemia, hypercapnia, low pH and low oxygen saturation (SatO2) are commonly observed in premature calves. These clinical indicators are associated with increased mortality in preterm human newborns with respiratory distress syndrome (RDS). The aim of this study was to investigate the prognostic importance of venous pH, partial pressure of carbon dioxide (pCO2) and lactate level and which parameters are related with mortality in premature calves with RDS. All premature calves (52 male/58 female) were admitted to clinic within 12-24 hours after birth and blood samples were also taken into heparinised plastic syringes from the jugular vein within 30 minutes following admission...
March 27, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28347715/preeclampsia-novel-insights-from-global-rna-profiling-of%C3%A2-trophoblast-subpopulations
#15
Matthew Gormley, Katherine Ona, Miko Kapidzic, Tamara Garrido-Gomez, Tamara Zdravkovic, Susan J Fisher
BACKGROUND: The maternal signs of preeclampsia, which include the new onset of high blood pressure, can occur because of faulty placentation. We theorized that transcriptomic analyses of trophoblast subpopulations in situ would lend new insights into the role of these cells in preeclampsia pathogenesis. OBJECTIVE: Our goal was to enrich syncytiotrophoblasts, invasive cytotrophoblasts, or endovascular cytotrophoblasts from the placentas of severe preeclampsia cases...
March 24, 2017: American Journal of Obstetrics and Gynecology
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
#16
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/28302697/abstention-or-intervention-for-isolated-hypotension-in-the-first-3%C3%A2-days-of-life-in-extremely-preterm-infants-association-with-short-term-outcomes-in-the-epipage-2-cohort-study
#17
Xavier Durrmeyer, Laetitia Marchand-Martin, Raphaël Porcher, Geraldine Gascoin, Jean-Christophe Roze, Laurent Storme, Geraldine Favrais, Pierre-Yves Ancel, Gilles Cambonie
OBJECTIVE: To compare outcomes at hospital discharge for preterm infants born before 29 weeks of gestation who had at least one episode of isolated hypotension during their first 72 hours of life for which they did or did not receive antihypotensive treatment. DESIGN: Etude Epidémiologique sur les Petits Ages Gestationnels 2 (EPIPAGE 2) French national prospective population-based cohort study in 2011. SETTING: 60 neonatal intensive care units...
March 16, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28301846/programming-of-the-hypothalamus-pituitary-adrenal-axis-by-very-preterm-birth
#18
Martijn J J Finken, Bibian van der Voorn, Jonneke J Hollanders, Charlotte A Ruys, Marita de Waard, Johannes B van Goudoever, Joost Rotteveel
BACKGROUND: Many very preterm (i.e., <32 weeks of gestation) newborns fail to mount an adequate adrenocortical response to stress or illness, termed relative adrenal insufficiency. Conversely, later in life these infants show features of increased glucocorticoid bioactivity, such as abdominal adiposity, insulin resistance, raised blood pressure, shorter stature and internalizing problem behavior. SUMMARY: Studies suggested that very preterm newborns have impairments along multiple levels of the hypothalamus-pituitary-adrenal (HPA) axis...
March 17, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28285280/effect-of-delayed-cord-clamping-on-hematocrit-and-thermal-and-hemodynamic-stability-in-preterm-neonates-a-randomized-controlled-trial
#19
Niraj Kumar Dipak, Ruchi Nimish Nanavat, Nand Kishore Kabra, Anita Srinivasan, Anitha Ananthan
OBJECTIVE: To evaluate the short term clinical effects of delayed cord clamping in preterm neonates. DESIGN: Randomized controlled trial. SETTING: A tertiary care neonatal unit from October 2013 to September 2014. PARTICIPANTS: 78 mothers with preterm labor between 27 to 316/7 weeks gestation. INTERVENTION: Early cord clamping (10 s), delayed cord clamping (60 s) or delayed cord clamping (60 s) along with intramuscular ergometrine (500 µg) administered to the mother...
February 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28243581/impact-of-changing-clinical-practices-on-early-blood-gas-analyses-in-very-preterm-infants-and-their-associated-inpatient-outcomes
#20
Hongmei Huang, Po-Yin Cheung, Megan O'Reilly, Sylvia van Os, Anne Lee Solevåg, Khalid Aziz, Georg M Schmölzer
BACKGROUND: Early studies suggest an association of abnormal carbon dioxide (PCO2) or oxygen (PO2) levels with adverse inpatient outcomes in very preterm babies. Recent resuscitation practice changes, such as targeted oxygen therapy, end-expiratory pressure, and rescue surfactant may influence these associations. OBJECTIVE: The aim of this study is to assess the range of the initial partial pressures of PCO2 and PO2 in preterm neonates <33 weeks gestational age after birth and their correlation to inpatient neonatal outcomes...
2017: Frontiers in Pediatrics
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