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Neonatal hemodynamics

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https://www.readbyqxmd.com/read/28441439/hemodynamics-and-gas-exchange-during-chest-compressions-in-neonatal-resuscitation
#1
Payam Vali, Praveen Chandrasekharan, Munmun Rawat, Sylvia Gugino, Carmon Koenigsknecht, Justin Helman, Bobby Mathew, Sara Berkelhamer, Jayasree Nair, Myra Wyckoff, Satyan Lakshminrusimha
PURPOSE: Current knowledge about pulmonary/systemic hemodynamics and gas exchange during neonatal resuscitation in a model of transitioning fetal circulation with fetal shunts and fluid-filled alveoli is limited. Using a fetal lamb asphyxia model, we sought to determine whether hemodynamic or gas-exchange parameters predicted successful return of spontaneous circulation (ROSC). METHODS: The umbilical cord was occluded in 22 lambs to induce asphyxial cardiac arrest...
2017: PloS One
https://www.readbyqxmd.com/read/28439520/relationship-between-relative-cerebral-blood-flow-relative-cerebral-blood-volume-and-relative-cerebral-metabolic-rate-of-oxygen-in-the-preterm-neonatal-brain
#2
Mina Nourhashemi, Guy Kongolo, Mahdi Mahmoudzadeh, Sabrina Goudjil, Fabrice Wallois
The mechanisms responsible for coupling between relative cerebral blood flow (rCBF), relative cerebral blood volume (rCBV), and relative cerebral metabolic rate of oxygen ([Formula: see text]), an important function of the microcirculation in preterm infants, remain unclear. Identification of a causal relationship between rCBF-rCBV and [Formula: see text] in preterms may, therefore, help to elucidate the principles of cortical hemodynamics during development. We simultaneously recorded rCBF and rCBV and estimated [Formula: see text] by two independent acquisition systems: diffuse correlation spectroscopy and near-infrared spectroscopy, respectively, in 10 preterms aged between 28 and 35 weeks of gestational age...
April 2017: Neurophotonics
https://www.readbyqxmd.com/read/28434547/stress-dose-corticosteroid-versus-placebo-in-neonatal-cardiac-operations-a-randomized-controlled-trial
#3
Pertti K Suominen, Juho Keski-Nisula, Tiina Ojala, Paula Rautiainen, Timo Jahnukainen, Johanna Hästbacka, Pertti J Neuvonen, Olli Pitkänen, Jussi Niemelä, Anu Kaskinen, Jukka Salminen, Risto Lapatto
BACKGROUND: Corticosteroids can improve the hemodynamic status of neonates with postoperative low cardiac output syndrome after cardiac operations. This study compared a prophylactically administered stress-dose corticosteroid (SDC) regimen against placebo on inflammation, adrenocortical function, and hemodynamic outcome. METHODS: Forty neonates undergoing elective open heart operations were randomized into two groups. The SDC group received perioperatively 2 mg/kg methylprednisolone, and 6 hours after the operation, a hydrocortisone infusion (0...
April 20, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28422424/pregnancy-outcomes-in-women-with-different-doses-of-corticosteroid-supplementation-during-labor-and-delivery
#4
Takao Owa, Kazuya Mimura, Aiko Kakigano, Shinya Matsuzaki, Keiichi Kumasawa, Masayuki Endo, Takuji Tomimatsu, Tadashi Kimura
AIM: The aim of this study was to report the pregnancy outcomes of women who received different doses of corticosteroid supplementation during labor and delivery. METHODS: We conducted a retrospective review of 102 pregnant women who received oral corticosteroid therapy, delivered at Osaka University Hospital, and were administered intravenous corticosteroid supplementation during labor and delivery. From January 2008 to May 2012, 47 women were administered a high dose of corticosteroids (HD group)...
April 19, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28412852/transitional-hemodynamics-in-infants-of-diabetic-mothers-by-targeted-neonatal-echocardiography-electrocardiography-and-peripheral-flow-study
#5
Ingrid Anne Mandy Schierz, Giuseppa Pinello, Ettore Piro, Mario Giuffrè, Simona La Placa, Giovanni Corsello
OBJECTIVE: Metabolic alterations of intrauterine environment in diabetes mellitus (DM) lead to fetal cardiac dysfunctions that can persist after birth. The aim of the study was to assess the cardiovascular adaptation in infants born to diabetic mothers (IDM) with different degrees of glycometabolic control, in relation to revised guidelines for diagnosis of DM and quality improvements in neonatal care. MATERIALS AND METHODS: An observational case-control study was conducted on IDM with gestational, type 1, and type 2 DM...
April 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28412849/maternal-hemodynamic-changes-and-predictors-of-poor-obstetric-outcome-in-women-with-rheumatic-heart-disease-a-five-year-observational-study
#6
Mohamed Rezk, Osama Elkelani, Abdelhamid Shaheen, Awni Gamal, Hassan Badr
OBJECTIVE: to assess prospectively the maternal cardiovascular hemodynamic changes and obstetric outcome in women with rheumatic heart disease (RHD) and to detect predictors of poor outcome. METHODS: This prospective observational study included 204 pregnant patients with RHD who were divided into two groups; successful pregnancy group with living fetus (n = 126) and poor obstetric outcome group with fetal or neonatal loss (n = 78). Hemodynamic changes, maternal and fetal outcome were assessed and recorded...
April 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28409759/influence-of-central-hemodynamics-on-vv-ecmo-oxygen-delivery-in-neonatal-animal-model
#7
M M Said, O Rivera, G T Mikesell, K Rais-Bahrami
BACKGROUND: Recirculation of oxygenated blood in venovenous extracorporeal membrane oxygenation (VV ECMO) can decrease the oxygen delivery provided by the ECMO support. This study investigated the influence of central hemodynamics and catheter position on the amount of recirculation and oxygen delivery during VV ECMO. METHODS: Recirculation was measured in seven newborn lambs (mean weight 4.7 kg) during VV ECMO using the ELSA Monitor (Transonic Systems, Inc., Ithaca, NY) and using the central venous line (CVL) method...
April 8, 2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28403927/relevance-of-routine-doppler-sampling-at-the-two-umbilical-arteries-in-the-follow-up-of-dichorionic-twin-pregnancies-with-intrauterine-growth-restricted-fetuses
#8
A J Vivanti, E Lecarpentier, A-G Cordier, F Proulx, V Tsatsaris, A Benachi
OBJECTIVE: The aim of this study is to assess if the presence of bilateral absent or reverse end-diastolic velocity (AREDV) indicates a poorer prognosis than unilateral AREDV in dichorionic-diamniotic twin pregnancies complicated by intrauterine growth restriction. METHODS: A prospective observational study of 36 dichorionic-diamniotic twin pregnancies complicated by intrauterine growth restriction. One hundred and fifty seven ultrasound (US) examinations were performed...
March 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28403044/comparing-first-and-second-year-palivizumab-prophylaxis-in-patients-with-hemodynamically-significant-congenital-heart-disease-in-the-caress-database-2005-2015
#9
MULTICENTER STUDY
Abby Li, Daniel Y Wang, Krista L Lanctôt, Ian Mitchell, Bosco A Paes
BACKGROUND: Respiratory syncytial virus hospitalization (RSVH) rates in children <2 years of age with hemodynamically significant congenital heart disease (HSCHD) are 2- to 4-fold higher compared with healthy term infants. Pediatric recommendations differ as to whether palivizumab is beneficial beyond 1 year of age. The objective of this study was to determine whether differences exist in respiratory-related illness hospitalization (RIH) and RSVH in HSCHD infants receiving palivizumab during the first year versus second year of life in the Canadian Registry of Palivizumab...
May 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28397410/building-a-better-neonatal-extracorporeal-life-support-circuit-comparison-of-hemodynamic-performance-and-gaseous-microemboli-handling-in-different-pump-and-oxygenator-technologies
#10
Kristen Glass, Payal Trivedi, Shigang Wang, Karl Woitas, Allen R Kunselman, Akif Ündar
Neurologic complications during neonatal extracorporeal life support (ECLS) are associated with significant morbidity and mortality. Gaseous microemboli (GME) in the ECLS circuit may be a possible cause. Advances in neonatal circuitry may improve hemodynamic performance and GME handling leading to reduction in patient complications. This study compared hemodynamic performance and GME handling using two centrifugal pumps (Maquet RotaFlow and Medos Deltastream DP3) and polymethylpentene oxygenators (Maquet Quadrox-iD and Medos Hilite 800LT) in a neonatal ECLS circuit model...
April 2017: Artificial Organs
https://www.readbyqxmd.com/read/28384837/the-impact-of-integrated-evaluation-of-hemodynamics-on-management-of-preterm-infants-with-late-onset-compromised-systemic-circulation
#11
Reem Amer, Reem Kalash, Mary M Seshia, Yasser N Elsayed
Objectives To study the impact of integrated evaluation of hemodynamics (IEH), using targeted neonatal echocardiography (TNE), cerebral regional tissue oxygenation (crRTO), and fractional oxygen extraction (FOE), using near-infrared spectroscopy (NIRS) on the management of infants with late-onset compromised systemic circulation (LCSC), and evaluation of the hemodynamic characteristics. Study Design Retrospective cohort study comparing infants with LCSC who underwent IEH (April 2014 to May 2016) with an earlier EPOCH who did not undergo IEH (January 2012 to March 2014)...
April 6, 2017: American Journal of Perinatology
https://www.readbyqxmd.com/read/28383430/timing-of-surgical-ligation-and-morbidities-in-very-low-birth-weight-infants
#12
YoungAh Youn, Cheong-Jun Moon, Jae-Young Lee, Cheul Lee, In Kyung Sung
The present study examined whether early patent ductus arteriosus (PDA) surgical ligation at ≤2 weeks of life was associated with increased morbidities and mortality in very low birth weight infants (VLBWIs) who were diagnosed with hemodynamically significant (hs) PDA. Between December 2013 and December 2015, a total of 407 VLBWIs were admitted, of whom 145 (35.6%) infants were diagnosed with an hs PDA. The clinical data for these infants were retrospectively collected for analysis. Among the 145 VLBWIs with an hs PDA, 58 (40%) infants had surgical ligation for PDA; of these, 29 (50%) infants had early ligation (EL; ligation at ≤2 weeks of life) and 29 (50%) infants had late ligation (LL; ligation at ≥2 weeks of life)...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28382440/tetralogy-of-fallot-surgical-repair-shunt-configurations-ductus-arteriosus-and-the-circle-of-willis
#13
Senol Piskin, Gozde Unal, Ahmet Arnaz, Tayyar Sarioglu, Kerem Pekkan
In this study, hemodynamic performance of three novel shunt configurations that are considered for the surgical repair of tetralogy of Fallot (TOF) disease are investigated in detail. Clinical experience suggests that the shunt location, connecting angle, and its diameter can influence the post-operative physiology and the neurodevelopment of the neonatal patient. An experimentally validated second order computational fluid dynamics (CFD) solver and a parametric neonatal diseased great artery model that incorporates the ductus arteriosus (DA) and the full patient-specific circle of Willis (CoW) are employed...
April 5, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28373622/long-term-results-after-open-mitral-commissurotomy-for-a-one-month-old-infant-with-mitral-stenosis
#14
Takashi Kitaichi, Mikio Sugano, Hiroki Arase, Yohei Kawatani, Kanako Kameta, Hirotsugu Kurobe, Eiki Fujimoto, Akemi Ono, Yasunobu Hayabuchi, Hiroshi Fujita, Hitoshi Sogabe, Tetsuya Kitagawa
The strategy for an infant with congenital mitral stenosis should be determined by three important factors: left ventricular volume, the degree of the systemic outflow tract obstruction, and the type of mitral valve dysfunction. A successful staged biventricular repair in early infancy for a patient who had congenital mitral stenosis with short chordae, hypoplastic left ventricle and coarctation of the aorta, and the long-term results are described. There were the following important hemodynamic factors that led to the successful biventricular repair in the patient...
2017: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/28372492/prenatally-diagnosed-congenital-portosystemic-shunts
#15
Bérengère Francois, Alain Lachaux, Fréderic Gottrand, Stéphanie De Smet
AIM: Congenital portosystemic shunts (CPSS) are rare, congenital malformations that are increasingly often discovered during the fetal period, and for which, the manifestations and evolution are poorly understood. The objective of this review is to describe the phenotype and evolution of forms diagnosed in the antenatal period. MATERIALS AND METHODS: We performed a systematic review of the literature cited in Pubmed between 1982 and 2016 for CPSS cases diagnosed during the fetal period...
April 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28367357/resuscitation-with-intact-placental-circulation-in-a-preterm-infant-with-hydrops-fetalis
#16
Simone Pratesi, Iuri Corsini, Caterina Coviello, Silvia Perugi, Carlo Dani
A preterm infant with prenatal diagnosis of hydrops fetalis was spontaneously delivered at 30 weeks of gestational age in a tertiary level hospital. Prenatal echography pointed out severe bilateral pleural effusions and diffused subcutaneous edema. A neonatologist team, alerted at the expulsion stage of labor, assisted the neonate immediately after birth and bilateral hydrothorax was drained with intact placental circulation to avoid a nonrespiratory period and its possible detrimental hemodynamic effects. The newborn was well stabilized in the delivery room before cutting the umbilical cord and starting mechanical ventilation...
January 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28360439/baricity-of-bupivacaine-on-maternal-hemodynamics-after-spinal-anesthesia-for-cesarean-section-a-randomized-controlled-trial
#17
Simin Atashkhoei, Naghi Abedini, Hojjat Pourfathi, Ali Bahrami Znoz, Pouya Hatami Marandi
BACKGROUND: After spinal anesthesia, patients undergoing cesarean section are more likely to develop hemodynamic changes. The baricity of local anesthetic has an important role on spinal blockade effects. The aim of this study was to compare the isobar and hyperbaric bupivacaine 0.5% plus fentanyl on maternal hemodynamics after spinal anesthesia for C/S. METHODS: In this double-blind study, 84 healthy pregnant women undergoing C/S using bupivacaine 0.5% isobar (study group, n=42) or hyperbaric (control group, n=42) for spinal anesthesia were scheduled...
March 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28360433/use-of-near-infrared-spectroscopy-nirs-in-cerebral-tissue-oxygenation-monitoring-in-neonates
#18
Rene Gumulak, Lucia Casnocha Lucanova, Mirko Zibolen
Near-infrared spectroscopy (NIRS) is a technology capable of non-invasive, continuous measuring of regional tissue oxygen saturation (StO2). StO2 represents a state of hemodynamic stability, which is influenced by many factors. Extensive research has been done in the field of measuring StO2 of various organs. The current clinical availability of several NIRS-based devices reflects an important development in prevention, detection and correction of discrepancy in oxygen delivery to the brain and vital organs...
March 30, 2017: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/28346262/modeling-outcomes-modified-aortic-arch-advancement-for-neonatal-hypoplastic-arch
#19
Joseph R Nellis, Timothy K Chung, Nandita Agarwal, Jose E Torres, Sarah E Holgren, Madhavan L Raghavan, Joseph W Turek
OBJECTIVE: Numerous surgical approaches regarding aortic arch advancement for neonatal arch hypoplasia have been described. These repairs can be classified into two categories: those that incorporate a patch and those that do not. The decision between repairs remains largely experiential, rather than empirical, because of the limited number of reported outcomes. We report early outcomes from neonates undergoing modified aortic arch advancement with an anterior patch and our experience using computational fluid dynamic modeling to better understand the hemodynamic consequences associated with this repair...
March 25, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28337872/safety-and-pharmacodynamic-mechanism-of-ropivacaine-lumbar-anesthesia-in-cesarean-section
#20
Q Liu, J J Wang, H Y Yan, Y Q Wang, C W Qin, M L Li
Lumbar anesthesia is the preferred anesthetic approach for puerperae undergoing cesarean section in China. To observe the safety of administering different doses of ropivacaine for cesarean section and its pharmacodynamic mechanism, we randomly divided 180 pregnant women undergoing cesarean section into three groups: group A, 10 mg ropivacaine (0.50%); group B, 12 mg ropivacaine (0.50%); and group C, 14 mg ropivacaine (0.50%). Pharmacodynamic index, anesthesia quality and incidence of untoward reactions of each group were observed...
January 2017: Journal of Biological Regulators and Homeostatic Agents
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