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Cardiac output studies in newborn

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https://www.readbyqxmd.com/read/29130772/assessment-of-left-ventricular-function-using-the-myocardial-performance-index-in-term-fetuses-that-develop-intrapartum-compromise
#1
Amal A Alsolai, Larissa N Bligh, Ristan M Greer, Alexander Gooi, Sailesh Kumar
OBJECTIVE: To investigate the relationship between the prelabour left ventricular myocardial Performance Index (LVMPI) and intrapartum fetal compromise (IFC) in low risk term pregnancies. METHODS: A blinded, prospective observational cohort study at the Mater Mother's Hospital, Brisbane, Australia. A cohort of 284 women with uncomplicated singleton pregnancies underwent fortnightly ultrasound from 36 weeks until delivery. The LVMPI was assessed by conventional Doppler ultrasound and correlated with intrapartum outcomes...
November 12, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28618098/pre-labor-fetal-cardiac-function-and-its-relationship-with-intrapartum-fetal-compromise-and-neonatal-status-at-term
#2
Amal A Alsolai, Larissa N Bligh, Ristan M Greer, Sailesh Kumar
OBJECTIVES: To prospectively investigate the relationship between fetal cardiac function and Doppler parameters with intrapartum fetal compromise (IFC) in term appropriately grown fetuses prior to labour. Secondary outcomes were to correlate prenatal cardiac function with neonatal acid base status, intrapartum fetal heart rate abnormalities adverse neonatal outcomes. METHODS: This was a blinded, prospective, observational, cohort study, at the Mater Mother's Hospital, Brisbane, Australia...
June 15, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28573895/impacts-of-therapeutic-hypothermia-on-cardiovascular-hemodynamics-in-newborns-with-hypoxic-ischemic-encephalopathy-a-case-control-study-using-echocardiography
#3
Ji Hong Yoon, Eun-Jung Lee, Sook Kyung Yum, Cheong-Jun Moon, Young-Ah Youn, Yoo Jin Kwun, Jae Young Lee, In Kyung Sung
PURPOSE: The effects of therapeutic hypothermia (TH) on hemodynamics in newborns with hypoxic-ischemic encephalopathy (HIE) were evaluated. MATERIALS AND METHODS: Thirty-two neonates (gestational age, 39.4 ± 1.3 weeks) who had TH for HIE and echocardiographic hemodynamic assessments during TH and post-TH period were studied. Gestational-age-matched 34 healthy neonates were enrolled for comparison. RESULTS: During TH, patients had significantly decreased left ventricular cardiac output (LVCO), descending aorta blood flow (DABF), and DABF/LVCO ratio, and increased resistive index of DA compared to controls...
July 7, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28419552/feasibility-and-utility-of-portable-ultrasound-during-retrieval-of-sick-preterm-infants
#4
Kathryn Browning Carmo, Tracey Lutz, Mark Greenhalgh, Andrew Berry, Martin Kluckow, Nick Evans
AIM: Document the incidence of haemodynamic pathology in critically ill preterm newborns requiring transport. METHOD: A transport neonatologist performed cardiac and cerebral ultrasound before and after transportation of infants born ≤30 weeks gestation. RESULTS: Forty-four newborns were studied in 2008-2015; of them, 21 were transported by road, 19, by helicopter and four, by fixed wing: median birthweight, 1130 g (680-1960 g) and median gestation, 27 weeks (23-30); 30 of 44 were male babies...
April 17, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28295792/biventricular-impact-of-mild-to-moderate-pulmonary-valve-stenosis-in-fetal-life
#5
L Guirado, F Crispi, N Masoller, M Bennasar, E Marimon, J Carretero, E Gratacós, J M Martínez, M K Friedberg, O Gómez
OBJECTIVES: to define the pattern of fetal echocardiographic changes associated with isolated pulmonary valve stenosis (PS) and to correlate the echocardiographic findings with the neonatal outcome and the need of postnatal pulmonary valvuloplasty within the first 12 months of life. METHODS: a prospective cohort study was designed on 16 fetuses with isolated PS and 48 controls matched by gestational age at scan (+/- 2 weeks). Fetal standard ultrasound and comprehensive echocardiography, which included cardiovascular morphometric parameters, systolic and diastolic functional and timing-measurements, were performed in all cases...
March 10, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28180126/providing-a-placental-transfusion-in-newborns-who-need-resuscitation
#6
REVIEW
Anup C Katheria, Melissa K Brown, Wade Rich, Kathy Arnell
Over the past decade, there have been several studies and reviews on the importance of providing a placental transfusion to the newborn. Allowing a placental transfusion to occur by delaying the clamping of the umbilical cord is an extremely effective method of enhancing arterial oxygen content, increasing cardiac output, and improving oxygen delivery. However, premature and term newborns who require resuscitation have impaired transitional hemodynamics and may warrant different methods to actively provide a placental transfusion while still allowing for resuscitation...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28079876/cardiac-output-decreases-and-systemic-vascular-resistance-increases-in-newborns-placed-in-the-left-lateral-position
#7
G Paviotti, S Todero, S Demarini
OBJECTIVE: The objective of the study was to study the effect of short-term left-lateral position on cardiovascular parameters in hemodynamically stable newborns. STUDY DESIGN: Cardiac output (CO), stroke volume (SV), systemic vascular resistance index (SVRI) and heart rate (HR) were measured by electric velocimetry in hemodynamically stable newborns without respiratory support in the supine, left-lateral and back-to-supine positions, each kept for 10 min. RESULTS: Thirty-two newborns were enrolled, birth weight 2134 (1818 to 2460) g, gestational age 34...
January 12, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/27542806/2-aminoethyldiphenylborinate-modifies-the-pulmonary-circulation-in-pulmonary-hypertensive-newborn-lambs-with-partial-gestation-at-high-altitude
#8
Sebastián Castillo-Galán, Sebastián Quezada, Fernando A Moraga, Germán Ebensperger, Emilio A Herrera, Felipe Beñaldo, Ismael Hernandez, Renato Ebensperger, Santiago Ramirez, Anibal J Llanos, Roberto V Reyes
Calcium signaling through store operated channels (SOC) is involved in hypoxic pulmonary hypertension. We determined whether a treatment with 2-aminoethyldiphenylborinate (2-APB), a compound with SOC blocker activity, reduces pulmonary hypertension and vascular remodeling. Twelve newborn lambs exposed to perinatal chronic hypoxia were studied, 6 of them received a 2-APB treatment and the other 6 received vehicle treatment, for 10 days in both cases. Throughout this period, we recorded cardiopulmonary variables and on day 11 we evaluated the response to an acute hypoxic challenge...
August 19, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27529179/haemodynamic-transition-after-birth-a-new-tool-for-non-invasive-cardiac-output-monitoring
#9
Thomas Freidl, Nariae Baik, Gerhard Pichler, Bernhard Schwaberger, Barbara Zingerle, Alexander Avian, Berndt Urlesberger
BACKGROUND: Substantial haemodynamic changes occur during the first minutes after birth. Currently, only heart rate (HR) and arterial oxygen saturation are routinely used to monitor haemodynamic transition after birth. OBJECTIVES: The aim of the present study was to continuously assess haemodynamic changes during transition in term infants for the first time by using electrical velocimetry (EV), a new method of non-invasive cardiac output monitoring (NICOM), based on impedance cardiography technology...
2017: Neonatology
https://www.readbyqxmd.com/read/27516657/caring-for-newborn-s-umbilical-cord-from-iranian-traditional-medicine-point-of-view
#10
Nayereh Vahedi Mazdabadi, Elahe Karimpour Razkenari, Mina Saeedi, Tahmineh Akbarzadeh, Mohammad Toushih
BACKGROUND: It is evident that infant's umbilical cord is essential for its survival and growth. In the past, it was not considered as a necessary tissue. However, nowadays, it has attracted lots of attention and its relation to different diseases has been demonstrated. In Iranian traditional medicine, caring for newborn's umbilical cord has been frequently recommended and it has been associated with different diseases. METHODS: Herein, Iranian traditional medicine resources such as "Qanun-fil-Tibb", "Exir-e-Azam", and "Tib-e-Akbari" were studied...
May 2016: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27490740/inotropes-do-not-increase-cardiac-output-or-cerebral-blood-flow-in-preterm-piglets
#11
Yvonne A Eiby, Nicole Y Shrimpton, Ian M R Wright, Eugenie R Lumbers, Paul B Colditz, Greg J Duncombe, Barbara E Lingwood
BACKGROUND: The preterm newborn is at high risk of developing cardiovascular compromise during the first day of life and this is associated with increased risk of brain injury. Standard treatments are volume expansion and administration of inotropes, typically dopamine and/or dobutamine, but there is limited evidence that inotropes improve clinical outcomes. This study investigated the efficacy of dopamine and dobutamine for the treatment of cardiovascular compromise in the preterm newborn using a piglet model...
December 2016: Pediatric Research
https://www.readbyqxmd.com/read/27432486/the-use-of-neonatal-extracorporeal-life-support-in-pediatric-cardiac-intensive-care-unit
#12
Erkut Öztürk, Okan Yıldız, Nihat Çine, Behzat Tüzün, Selen Onan, Yakup Ergül, Alper Güzeltaş, Sertaç Haydin, Mehmet Yeniterzi, İhsan Bakır
AIM: The aim of the study is to evaluate extracorporeal life support system (ECLS) employed in neonates in pediatric cardiac intensive care unit. MATERIAL AND METHODS: Twenty-five neonates that required ECLS in between November 2010 and November 2015 were evaluated. RESULTS: The median age was 12 days (range 3-28 days) and the median body weight was 3 kg (range 2.5-5 kg). Venoarterial ECLS was performed in all of the cases. Ascendan aorta-right atrial cannulation in 22 patients and neck cannulation in three patients were performed...
June 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27159914/detection-and-quantification-of-left-to-right-shunting-using-transpulmonary-ultrasound-dilution-tpud-a-validation-study-in-neonatal-lambs
#13
Sabine L Vrancken, Arno F van Heijst, Jeroen C Hopman, Kian D Liem, Johannes G van der Hoeven, Willem P de Boode
OBJECTIVES: We investigated the accuracy of left-to-right shunt detection using transpulmonary ultrasound dilution (TPUD) and compared the agreement between pulmonary over systemic blood flow (Qp/Qs) ratio measured by TPUD [Qp/Qs(tpud)] and ultrasonic flow probes [Qp/Qs(ufp)]. METHODS: Seven newborn lambs under general anesthesia were connected to the TPUD monitor (COstatus™) after insertion of arterial and central venous catheters. A Gore-Tex® shunt, inserted between the descending aorta and left pulmonary artery, was intermittently opened and closed while cardiac output was varied by blood withdrawals...
October 1, 2016: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/27057332/measuring-cardiac-changes-using-electrical-impedance-during-delayed-cord-clamping-a-feasibility-trial
#14
Anup C Katheria, Madeline Wozniak, David Harari, Kathy Arnell, Deborah Petruzzelli, Neil N Finer
BACKGROUND: To date no study has attempted to continuously evaluate changes in hemodynamics during delayed cord clamping in humans. We aimed to demonstrate 1. the feasibility of measurements of hemodynamics during delayed cord clamping and 2. to describe the changes that occur over each minute. RESULTS: After vaginal delivery, term infants (37(0)-41(6) weeks) were placed on a Life Start® bed 10-20 cm below the placenta. Transcutaneous sensors were placed on the neck and chest to determine heart rate, stroke volume and cardiac output at each beat...
2015: Maternal Health, Neonatology and Perinatology
https://www.readbyqxmd.com/read/26687150/initial-observations-of-the-effects-of-calcium-chloride-infusions-in-pediatric-patients-with-low-cardiac-output
#15
Konstantin Averin, Chet Villa, Catherine D Krawczeski, Jesse Pratt, Eileen King, John L Jefferies, David P Nelson, David S Cooper, Thomas D Ryan, Jaclyn Sawyer, Jeffrey A Towbin, Angela Lorts
Myocardial contractility and relaxation are highly dependent on calcium homeostasis. Immature myocardium, as in pediatric patients, is thought to be more dependent on extracellular calcium for optimal function. For this reason, intravenous calcium chloride infusions may improve myocardial function in the pediatric patient. The objectives of this study were to report the hemodynamic changes seen after administration of continuous calcium chloride to critically ill children. We retrospectively identified pediatric patients (newborn to 17 years old) with hemodynamic instability admitted to the cardiac ICU between May 2011 and May 2012 who received a continuous infusion of calcium chloride...
March 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/26365674/treatment-strategies-for-primary-tumors-of-the-heart-in-children-a-10-year-experience
#16
Xu Liu, Haifa Hong, Haibo Zhang, Zhiwei Xu, Jinfen Liu, Lisheng Qiu
BACKGROUND: The goal of this study was to determine the optimal treatment strategy for children with primary tumors of the heart. METHODS: We reviewed 88 children with primary heart tumors in our center from January 2004 to December 2013. Operative patients were followed every 6 months in the first postoperative year and then regularly every 12 months; nonoperative patients were followed once a year after diagnosis. Demographic information of imaging, operative details, and postoperative data were obtained from medical records...
November 2015: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/26346024/a-literature-review-of-the-pharmacokinetics-and-pharmacodynamics-of-dobutamine-in-neonates
#17
REVIEW
Liam Mahoney, Geetika Shah, David Crook, Hector Rojas-Anaya, Heike Rabe
Since its discovery in 1975 dobutamine has been used off-label for treating hemodynamic insufficiency in newborns and children. We present a structured literature review of pharmacokinetic and pharmacodynamic data for dobutamine in the pediatric population. Structured searches were conducted to identify relevant articles according to pre-defined inclusion criteria. Where possible, results for the pharmacodynamic and pharmacokinetic effect of dobutamine were reported as pooled data. Forty-six papers met the inclusion criteria...
January 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/26342630/effects-of-ventilation-modalities-on-near-infrared-spectroscopy-in-surgically-corrected-cdh-infants
#18
COMPARATIVE STUDY
Andrea Conforti, Paola Giliberti, Francesca Landolfo, Laura Valfrè, Claudia Columbo, Vito Mondi, Irma Capolupo, Andrea Dotta, Pietro Bagolan
BACKGROUND: Near-infrared spectroscopy (NIRS) is a noninvasive technique for monitoring tissue oxygenation and perfusion. The aim of this study was to evaluate cerebral and splanchnic NIRS changes in CDH operated infants enrolled into the VICI trial and therefore randomized for ventilatory modalities. MATERIALS AND METHODS: CDH newborns enrolled into the VICI trial (Netherlands Trial Register, NTR 1310) were randomized at birth for high-frequency oscillatory ventilation (HFOV) or conventional mechanical ventilation (CMV) according to the trial...
March 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/26221073/knockout-of-src-1-and-src-3-in-mice-decreases-cardiomyocyte-proliferation-and-causes-a-noncompaction-cardiomyopathy-phenotype
#19
Xian Chen, Li Qin, Zhaoliang Liu, Lan Liao, James F Martin, Jianming Xu
Noncompaction cardiomyopathy (NCC) is a congenital heart disease that causes ventricular dysfunction and high mortality rate in children. The mechanisms responsible for NCC are still unknown. The steroid receptor coactivator-1 (SRC-1) and SRC-3 are transcriptional coactivators for nuclear hormone receptors and certain other transcription factors that regulate many genes in development and organ function. However, the roles of SRC-1/3 in heart morphogenesis, function and NCC occurrence are unknown. This study aims to examine the spatial and temporal expression patterns of SRC-1/3 in the heart and investigate the specific roles of SRC-1/3 in heart development, function and NCC occurrence...
2015: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/26215925/tailoring-the-hybrid-palliation-for-hypoplastic-left-heart-syndrome-a-simulation-study-using-a-lumped-parameter-model
#20
A Di Molfetta, M Pilati, M G Gagliardi, L Fresiello, A Amodeo, A Cristofaletti, G Pongiglione, G Ferrari
The results of Hybrid procedure (HP) for the hypoplastic left heart syndrome (HLHS) depend on several variables: pulmonary artery banding tightness (PAB), atrial septal defect size (ASD) and patent ductus arteriosus stent size (PDA). A HP complication could be the aortic coarctaction (CoAo). The reverse Blalock-Taussig shunt (RevBT) placement was proposed to avoid CoAo effects. This work aims at developing a lumped parameter model (LPM) to investigate the effects of the different variables on HP haemodynamics...
September 2015: Medical Engineering & Physics
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