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Cardiac output studies in newborn

Zbynĕk Straňák, Simona Feyereislová, Peter Korček, Eugene Dempsey
Postnatal adaptation in preterm newborn comprises complex physiological processes that involve significant changes in the circulatory and respiratory system. Increasing hemoglobin level and blood volume following placental transfusion may be of importance in enhancing arterial oxygen content, increasing cardiac output, and improving oxygen delivery. The European consensus on resuscitation of preterm infants recommends delayed cord clamping (DCC) for at least 60 s to promote placenta-fetal transfusion in uncompromised neonates...
2018: Frontiers in Pediatrics
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...
March 9, 2018: Pediatric Cardiology
Michaël Sage, Mathieu Nadeau, Claudia Forand-Choinière, Julien Mousseau, Jonathan Vandamme, Claire Berger, Jean-Sébastien Tremblay-Roy, Renaud Tissier, Philippe Micheau, Étienne Fortin-Pellerin
BACKGROUND: Filling the lung with dense liquid perfluorocarbons during total liquid ventilation (TLV) might compress the myocardium, a plausible explanation for the instability occasionally reported with this technique. Our objective is to assess the impacts of TLV on the cardiovascular system, particularly left ventricular diastolic function, in an ovine model of neonatal respiratory distress syndrome. METHOD: Eight newborns lambs, 3.0 ± 0.4 days (3.2 ± 0.3kg) were used in this crossover experimental study...
2018: PloS One
Marie Janaillac, Thierry P Beausoleil, Keith J Barrington, Marie-Josée Raboisson, Oliver Karam, Mathieu Dehaes, Anie Lapointe
Haemodynamic assessment during the transitional period in preterm infants is challenging. We aimed to describe the relationships between cerebral regional tissue oxygen saturation (CrSO2), perfusion index (PI), echocardiographic, and clinical parameters in extremely preterm infants in their first 72 h of life. Twenty newborns born at < 28 weeks of gestation were continuously monitored with CrSO2 and preductal PI. Cardiac output was measured at H6, H24, H48, and H72. The median gestational age and birth weight were 25...
January 27, 2018: European Journal of Pediatrics
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
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
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
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...
August 2017: Acta Paediatrica
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
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
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
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
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
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
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
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
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
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
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
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
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