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systolic functions in neonates

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https://www.readbyqxmd.com/read/29805338/chronological-echocardiographic-changes-in-healthy-term-neonates-within-postnatal-72-hours-using-doppler-studies
#1
Kee Soo Ha, Byung Min Choi, Eun Hee Lee, Jeonghee Shin, Hyun Joo Cho, Gi Young Jang, Chang Sung Son
Background: This study evaluated echocardiographic changes in full-term healthy neonates during early transitional period from postnatal 0-72 hours at 12-hour intervals by echocardiography. Methods: This was a prospective, observational, and longitudinal single-center cohort study. Morphometric, functional, systolic, diastolic, and tissue Doppler imaging (TDI) parameters (patent ductus arteriosus [PDA], aorta, superior vena cava [SVC], stroke volume [SV], cardiac output [CO], cardiac index [CI], early diastolic flow velocity [E], late diastolic flow velocity [A], early filling in TDI [E'], peak systolic annular velocity in TDI [S'], late velocity peak in TDI [A'], and myocardial performance index [MPI]) were evaluated in left ventricle (LV) and right ventricle (RV) with 56 newborns...
May 28, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29746700/%C3%AE-2-adrenergic-receptor-autoantibodies-alleviated-myocardial-damage-induced-by-%C3%AE-1-adrenergic-receptor-autoantibodies
#2
Ning Cao, Hao Chen, Yan Bai, Xiaochun Yang, Wenli Xu, Weiwei Hao, Yi Zhou, Jiayin Chai, Ye Wu, Zhaojia Wang, Xiaochen Yin, Li Wang, Wen Wang, Huirong Liu, Michael L X Fu
Aims: β1-adrenergic receptor autoantibodies (β1-AAs) and β2-adrenergic receptor autoantibodies (β2-AAs) are present in patients with heart failure (HF); however, their interrelationship with cardiac structure and function remains unknown. This study explored the effects of the imbalance between β1-AAs and β2-AAs on cardiac structure and its underlying mechanisms in HF. Methods and Results: Patients with left systolic HF who suffered from coronary heart disease (65...
May 8, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29746007/preterm-growth-restriction-and-bronchopulmonary-dysplasia-the-vascular-hypothesis-and-related-physiology
#3
Arvind Sehgal, Stella M Gwini, Samuel Menahem, Beth J Allison, Suzanne L Miller, Graeme R Polglase
KEY POINTS: Approximately 5-10% pregnancies are affected by fetal growth restriction. Preterm infants affected by fetal growth restriction have a higher incidence of bronchopulmonary dysplasia. This study is the first to measure pulmonary artery thickness and stiffness. It highlights that impaired vasculogenesis may be a contributory factor in the higher incidence of bronchopulmonary dysplasia in preterm growth restricted infants. The study addresses the mechanistic link between fetal programming and vascular architecture and mechanics...
May 10, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29695206/efficacy-and-safety-of-oral-paracetamol-versus-oral-ibuprofen-for-closure-of-patent-ductus-arteriosus-in-preterm-infants-a-randomized-controlled-trial
#4
Rania A El-Farrash, Mohammed S El Shimy, Abeer S El-Sakka, Manal G Ahmed, Dina G Abdel-Moez
OBJECTIVE: The objective of this study is to evaluate the efficacy and safety of oral paracetamol versus oral ibuprofen in the treatment of hemodynamically significant patent ductus arteriosus (hsPDA) in preterm infants. STUDY DESIGN: An interventional randomized case-control study, registered in ClinicalTrials.gov (NCT03265782), was conducted on 60 preterm infants with gestational age ≤34 weeks, postnatal age of 2-7 d and color Doppler echocardiographic evidence of hsPDA...
May 9, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29670871/echocardiographic-evaluation-of-ventricular-function-for-the-neonatologist-and-pediatric-intensivist
#5
REVIEW
Cécile Tissot, Yogen Singh, Nicole Sekarski
In the neonatal and pediatric intensive care setting, bedside cardiac ultrasound is often used to assess ventricular dimensions and function. Depending upon the underlying disease process, it is necessary to be able to evaluate the systolic and diastolic function of left and or right ventricles. The systolic function of left ventricle is mostly assessed qualitatively on visual inspection "eye-balling" and quantitatively by measuring circumferential fraction shortening or calculating the ejection fraction by Simpson's planimetry...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29669946/pravastatin-therapy-during-preeclampsia-prevents-long-term-adverse-health-effects-in-mice
#6
Nicola Garrett, Joaquim Pombo, Michelle Umpierrez, James E Clark, Mark Simmons, Guillermina Girardi
Preeclampsia (PE), associates with long-term increased risk for cardiovascular disease in women, suggesting that PE is not an isolated disease of pregnancy. It is not known if increased risk for long-term diseases is due to PE-specific factors or to prepregnancy renal and cardiovascular risk factors. We used a mouse model in which a WT female with normal prepregnancy health develops PE to investigate if preeclampsia causes long-term cardiovascular consequences after pregnancy for mothers and offspring. Mothers exhibited endothelial dysfunction and hypertension after PE and had glomerular injury that not only persisted but deteriorated, leading to fibrosis...
April 19, 2018: JCI Insight
https://www.readbyqxmd.com/read/29661840/therapeutic-potential-of-a-novel-necrosis-inhibitor-7-amino-indole-in-myocardial-ischemia-reperfusion-injury
#7
In-Chang Hwang, Ju-Young Kim, Ji-Hyun Kim, Joo-Eun Lee, Ji-Yun Seo, Jae-Won Lee, Jonghanne Park, Han-Mo Yang, Soon-Ha Kim, Hyun-Jai Cho, Hyo-Soo Kim
Opening of mitochondrial permeability transition pore and Ca2+ overload are main contributors to myocardial ischemia-reperfusion injury, which paradoxically causes a wide variety of myocardial damage. We investigated the protective role of a novel necrosis inhibitor (NecroX-7; NecX) against myocardial ischemia-reperfusion injury using in vitro and in vivo models. H9C2 rat cardiomyoblasts and neonatal cardiomyocytes were exposed to hypoxia-reoxygenation stress after pre-treatment with NecX, vitamin C, a combination of vitamin C and E, N-acetylcysteine, an apoptosis inhibitor (Z-VAD-fmk), or cyclosporine A...
June 2018: Hypertension
https://www.readbyqxmd.com/read/29655684/protective-role-and-mechanism-of-snakegourd-peel-against-myocardial-infarction-in-rats
#8
Guanlin Yang, Dongyu Min, Junwei Yan, Ming Yang, Guijun Lin
BACKGROUND: Injection of snakegourd peel (SP), an herb used in traditional Chinese medicine, is used to treat coronary artery disease and stable angina in China. However, its therapeutic role and mechanism of action for the treatment of myocardial infarction (MI) is not fully understood. PURPOSE: The present study was designed to investigate the effect of SP on MI-induced cardiac injury and elucidate its underlying molecular mechanisms. METHODS: To create an in vivo model of MI, we ligated the left coronary artery of Wistar rats...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29604486/effects-of-caffeine-on-the-preterm-brain-an-observational-study
#9
Laura M L Dix, Frank van Bel, Willem Baerts, Petra M A Lemmers
BACKGROUND AND AIM: Caffeine improves neurodevelopmental outcome of preterm infants. This study analyses the effects of caffeine on the neonatal brain. We hypothesized that caffeine has a neuroprotective effect through an increase in oxygen metabolism; reflected by increased cerebral oxygen extraction, electrical function, and perfusion. METHODS: Preterm infants <32 weeks gestation (GA) receiving their primary dose caffeine-base (10 mg/kg) were included. Ten minutes of stable monitoring were selected before, during, and every hour up to 6 h after caffeine...
May 2018: Early Human Development
https://www.readbyqxmd.com/read/29587562/correlation-between-umbilical-arterial-ph-values-and-fetal-vertebral-artery-doppler-waveforms-at-the-beginning-of-the-second-stage-of-labor-a-pilot-prospective-study
#10
Danila Morano, Gennaro Scutiero, Piergiorgio Iannone, Giulia Nencini, Elena Mantovani, Antonio Farina, Pantaleo Greco
OBJECTIVE: The aim of this study was to evaluate the association between umbilical arterial pH and fetal vertebral artery Doppler velocimetry waveforms measured at the beginning of the second stage of labor in physiological term pregnancies. METHODS: This was a prospective cohort study of 250 pregnancies. The resistance index, pulsatility index, and peak systolic velocity were measured. The relationship between the fetal Doppler and the umbilical arterial pH was evaluated...
April 12, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29523920/diminished-cardiac-performance-and-left-ventricular-dimensions-in-neonates-with-congenital-diaphragmatic-hernia
#11
Gabriel Altit, Shazia Bhombal, Krisa Van Meurs, Theresa A Tacy
INTRODUCTION: Newborns with congenital diaphragmatic hernia (CDH) have varying degrees of pulmonary hypoplasia and pulmonary hypertension (PH), and there is limited evidence that cardiac dysfunction is present. We sought to study early neonatal biventricular function and performance in these patients by reviewing early post-natal echocardiography (ECHO) measurements and comparing them to normal term newborns. METHODS: Retrospective case-control study reviewing clinical and ECHO data on term newborns with CDH and normal controls born between 2009 and 2016...
June 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29509967/early-modifications-of-cardiac-function-in-preterm-neonates-using-speckle-tracking-echocardiography
#12
Biagio Castaldi, Giulia Bordin, Valentina Favero, Daniel Nardo, Francesca Previati, Sabrina Salvadori, Eugenio Baraldi, Ornella Milanesi
BACKGROUND AND AIMS: Preterm newborns undergo hemodynamic challenges in the postnatal period. The aim of this study was to investigate myocardial mechanics changes in the postnatal period in preterm infants using speckle tracking echocardiography (STE). MATERIAL AND METHODS: Thirty-nine preterm infants ≤34 weeks' gestation underwent cardiac ultrasound evaluation during the first 96 hours of life. A repeated echocardiogram at 3 weeks of age was performed. Echocardiographic assessment involved left ventricular ejection fraction, mitral E/A ratio, S' and E' velocities, E/E' ratio, tricuspid annular plane systolic excursion (TAPSE), left atrium-to-aorta ratio, ductal diameter and ductal shunt pattern...
March 6, 2018: Echocardiography
https://www.readbyqxmd.com/read/29503089/neonatal-apex-resection-triggers-cardiomyocyte-proliferation-neovascularization-and-functional-recovery-despite-local-fibrosis
#13
Vasco Sampaio-Pinto, Sílvia C Rodrigues, Tiago L Laundos, Elsa D Silva, Francisco Vasques-Nóvoa, Ana C Silva, Rui J Cerqueira, Tatiana P Resende, Nicola Pianca, Adelino Leite-Moreira, Gabriele D'Uva, Sólveig Thorsteinsdóttir, Perpétua Pinto-do-Ó, Diana S Nascimento
So far, opposing outcomes have been reported following neonatal apex resection in mice, questioning the validity of this injury model to investigate regenerative mechanisms. We performed a systematic evaluation, up to 180 days after surgery, of the pathophysiological events activated upon apex resection. In response to cardiac injury, we observed increased cardiomyocyte proliferation in remote and apex regions, neovascularization, and local fibrosis. In adulthood, resected hearts remain consistently shorter and display permanent fibrotic tissue deposition in the center of the resection plane, indicating limited apex regrowth...
March 13, 2018: Stem Cell Reports
https://www.readbyqxmd.com/read/29361049/a-persistent-giant-eustachian-valve-functional-tricuspid-atresia-in-a-newborn
#14
Konstantinos Sideris, Janez Vodiskar, Ruediger Lange, Julie Cleuziou
Persistent right valve of the systemic venous sinus is a rare anomaly with anatomical variations. This anomaly may present as an obstructive structure that can inhibit the antegrade flow through the tricuspid valve. We report on a 4-day-old neonate who presented with pronounced peripheral and central cyanosis. Echocardiographic examination showed a giant Eustachian valve moving towards the tricuspid valve during late systole and leading to complete obstruction of the inflow. Blood flow was redirected through the persistent foramen ovale, producing a right-to-left shunt...
January 18, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29353231/the-preterm-heart-in-childhood-left-ventricular-structure-geometry-and-function-assessed-by-echocardiography-in-6-year-old-survivors-of-periviable-births
#15
Lilly-Ann Mohlkert, Jenny Hallberg, Olof Broberg, Annika Rydberg, Cecilia Pegelow Halvorsen, Petru Liuba, Vineta Fellman, Magnus Domellöf, Gunnar Sjöberg, Mikael Norman
BACKGROUND: Preterm birth has been associated with increased risk of cardiovascular morbidity in adult life. We evaluated whether preterm birth is associated with deviating cardiac structure and function before school start. METHODS AND RESULTS: In total, 176 children aged 6 years and born extremely preterm (EXPT; gestational age of 22-26 weeks) and 134 children born at term (control [CTRL]) were studied. We used echocardiography to assess left heart dimensions, geometry, and functions...
January 20, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29338497/a-prospective-observational-study-comparing-cardiac-function-of-small-for-gestational-age-with-appropriate-for-gestational-age-babies-using-serial-echocardiographic-studies
#16
Manish Kumar, Sridhar Santhanam, Niranjan Thomas, Atanu Kumar Jana
BACKGROUND: Approximately 30% of babies born in India are low birth weight (LBW) and about 70% of LBW babies are small for gestational age (SGA). Though there are several trials that have evaluated cardiac function of intrauterine growth restricted (IUGR) babies in utero, there is limited data about postnatal cardiac function in SGA babies during early neonatal period. This study was conducted to evaluate the cardiac functions of SGA babies by serial echocardiographic measurements and compare this with appropriate for gestational age (AGA) babies during the early postnatal period...
January 31, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29333220/outcomes-of-left-ventricular-function-according-to-treatment-response-for-a-patent-ductus-arteriosus-in-preterm-infants
#17
Soo Jung Kang, Young Sun Cho, Seo Jung Hwang, Hyo Jin Kim
Background: To evaluate the outcomes of left ventricular (LV) function according to treatment response for a hemodynamically significant patent ductus arteriosus (hsPDA) in preterm infants. Methods: Echocardiograms of 21 preterm infants born at gestational age < 31 weeks obtained at term-equivalent age were retrospectively studied. Among preterm infants with a hsPDA, 9 underwent ligation after failure of pharmacological closure (ligation group) and 6 experienced successful pharmacological closure (medication group)...
December 2017: Journal of Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/29332921/early-diastolic-left-ventricular-relaxation-in-normal-neonates-is-influenced-by-ventricular-stiffness-and-longitudinal-systolic-function
#18
Yukako Homma, Yasunobu Hayabuchi, Tomomasa Terada, Miki Inoue, Kazuhiro Mori
Tissue Doppler velocity during early diastole (e') is one of the most feasible and reproducible echocardiographic assessments to reflect active relaxation of the left ventricle. Although several reports have described the mechanisms of temporal diastolic dysfunction in the early neonatal period, factors influencing diastolic function have not been determined. The purpose of this study was to elucidate factors significantly influencing e' in the early neonatal period.A total of 179 consecutive normal neonates underwent echocardiographic studies performed at 0 days and 5-10 days after birth...
January 27, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29223466/long-term-pulmonary-and-cardiovascular-morbidities-of-neonatal-hyperoxia-exposure-in-mice
#19
Renuka T Menon, Amrit Kumar Shrestha, Corey L Reynolds, Roberto Barrios, Binoy Shivanna
Pulmonary hypertension (PH) frequently occurs in infants with bronchopulmonary dysplasia (BPD), causing increased mortality and right ventricular (RV) dysfunction that persists into adulthood. A first step in developing better therapeutic options is identifying and characterizing an appropriate animal model. Previously, we characterized the short-term morbidities of a model in which C57BL/6J wild-type (WT) mice were exposed to 70% O2 (hyperoxia) during the neonatal period. Here, we aimed to determine the long-term morbidities using lung morphometry, echocardiography (Echo), and cardiac magnetic resonance imaging (cMRI)...
January 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29213350/immediate-early-response-gene-x-1-iex-1-mediates-ischemic-preconditioning-induced-cardioprotection-in-rats
#20
Ming-Jiang Xu, Yan Cai, Aijuan Qu, John Y-J Shyy, Wenjing Li, Xian Wang
Reversible myocardial ischemia/reperfusion (I/R) or ischemic preconditioning (IPC) is associated with an immediate genomic response; IPC-induced immediate early genes are associated with reduced infarct size. Because the immediate early response gene X-1 (IEX-1) plays a central role in cell apoptosis, we examine whether IEX-1 exerts protective effects against I/R injury. We found that the IEX-1 mRNA level was increased in the IPC-imposed rat heart. However, it was downregulated in the I/R rat heart, which was prevented by in situ IPC...
2017: Oxidative Medicine and Cellular Longevity
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