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Neonatal Near infrared spectroscopy

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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
#1
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/28393884/novel-wavelet-real-time-analysis-of-neurovascular-coupling-in-neonatal-encephalopathy
#2
Lina F Chalak, Fenghua Tian, Beverley Adams-Huet, Diana Vasil, Abbot Laptook, Takashi Tarumi, Rong Zhang
Birth asphyxia constitutes a major global public health burden for millions of infants, despite hypothermia therapy. There is a critical need for real time surrogate markers of therapeutic success, to aid in patient selection and/or modification of interventions in neonatal encephalopathy (NE). This is a proof of concept study aiming to quantify neurovascular coupling (NVC) using wavelet analysis of the dynamic coherence between amplitude-integrated electroencephalography (aEEG) and near-infrared spectroscopy in NE...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28384837/the-impact-of-integrated-evaluation-of-hemodynamics-on-management-of-preterm-infants-with-late-onset-compromised-systemic-circulation
#3
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/28360433/use-of-near-infrared-spectroscopy-nirs-in-cerebral-tissue-oxygenation-monitoring-in-neonates
#4
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/28355608/new-wavelet-neurovascular-bundle-for-bedside-evaluation-of-cerebral-autoregulation-and-neurovascular-coupling-in-newborns-with-hypoxic-ischemic-encephalopathy
#5
Lina F Chalak, Rong Zhang
Neonatal encephalopathy (NE) resulting from birth asphyxia constitutes a major global public health burden for millions of infants every year, and despite therapeutic hypothermia, half of these neonates have poor neurological outcomes. As new neuroprotective interventions are being studied in clinical trials, there is a critical need to establish physiological surrogate markers of therapeutic efficacy, to guide patient selection and/or to modify the therapeutic intervention. The challenge in the field of neonatal brain injury has been the difficulty of clinically discerning NE severity within the short therapeutic window after birth or of analyzing the dynamic aspects of the cerebral circulation in sick NE newborns...
March 30, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28352624/monitoring-cerebral-oxygenation-in-neonates-an-update
#6
REVIEW
Laura Marie Louise Dix, Frank van Bel, Petra Maria Anna Lemmers
Cerebral oxygenation is not always reflected by systemic arterial oxygenation. Therefore, regional cerebral oxygen saturation (rScO2) monitoring with near-infrared spectroscopy (NIRS) is of added value in neonatal intensive care. rScO2 represents oxygen supply to the brain, while cerebral fractional tissue oxygen extraction, which is the ratio between rScO2 and systemic arterial oxygen saturation, reflects cerebral oxygen utilization. The balance between oxygen supply and utilization provides insight in neonatal cerebral (patho-)physiology...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28349556/cerebral-oxygenation-as-measured-by-near-infrared-spectroscopy-in-neonatal-intensive-care-correlation-with-arterial-oxygenation
#7
Carol Lu Hunter, Ju Lee Oei, Kei Lui, Timothy Schindler
AIM: To assess correlation between cerebral oxygenation (rScO2 ), as measured by near-infrared spectroscopy (NIRS), and arterial oxygenation (PaO2 ), as measured by arterial blood gases, in preterm neonates. METHODS: Preterm neonates <37 weeks gestation with an indwelling arterial vascular catheter were recruited between April and August 2015 from the neonatal intensive care unit of the Royal Hospital for Women, Randwick NSW, Australia. The NIRS sensor was placed on the frontolateral aspect of the head prior to arterial gas sampling...
March 27, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28280719/cerebral-tissue-oxygenation-during-immediate-neonatal-transition-and-resuscitation
#8
REVIEW
Gerhard Pichler, Georg M Schmölzer, Berndt Urlesberger
This article provides a review of cerebral tissue oxygenation during immediate transition after birth in human neonates. Recommended routine monitoring, especially if resuscitation is needed, during this period includes arterial oxygen saturation and heart rate measured by pulse oximetry and electrocardiogram. However, there is increasing interest to monitor in addition with near-infrared spectroscopy (NIRS) the oxygenation of the brain. There is a different pattern of increase between cerebral tissue oxygenation and arterial oxygen saturation during the immediate transition, with cerebral tissue oxygenation reaching a plateau faster than arterial oxygen saturation...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28278259/prognostic-value-of-cerebral-tissue-oxygen-saturation-during-neonatal-extracorporeal-membrane-oxygenation
#9
Marie-Philippine Clair, Jérôme Rambaud, Adrien Flahault, Romain Guedj, Julia Guilbert, Isabelle Guellec, Amélie Durandy, Maryne Demoulin, Sandrine Jean, Delphine Mitanchez, François Chalard, Chiara Sileo, Ricardo Carbajal, Sylvain Renolleau, Pierre-Louis Léger
OBJECTIVES: Extracorporeal membrane oxygenation support is indicated in severe and refractory respiratory or circulatory failures. Neurological complications are typically represented by acute ischemic or hemorrhagic lesions, which induce higher morbidity and mortality. The primary goal of this study was to assess the prognostic value of cerebral tissue oxygen saturation (StcO2) on mortality in neonates and young infants treated with ECMO. A secondary objective was to evaluate the association between StcO2 and the occurrence of cerebral lesions...
2017: PloS One
https://www.readbyqxmd.com/read/28276534/non-invasive-assessment-of-cerebral-blood-flow-and-oxygen-metabolism-in-neonates-during-hypothermic-cardiopulmonary-bypass-feasibility-and-clinical-implications
#10
Silvina L Ferradal, Koichi Yuki, Rutvi Vyas, Christopher G Ha, Francesca Yi, Christian Stopp, David Wypij, Henry H Cheng, Jane W Newburger, Aditya K Kaza, Maria A Franceschini, Barry D Kussman, P Ellen Grant
The neonatal brain is extremely vulnerable to injury during periods of hypoxia and/or ischemia. Risk of brain injury is increased during neonatal cardiac surgery, where pre-existing hemodynamic instability and metabolic abnormalities are combined with long periods of low cerebral blood flow and/or circulatory arrest. Our understanding of events associated with cerebral hypoxia-ischemia during cardiopulmonary bypass (CPB) remains limited, largely due to inadequate tools to quantify cerebral oxygen delivery and consumption non-invasively and in real-time...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28196885/hemoglobin-phase-of-oxygenation-and-deoxygenation-in-early-brain-development-measured-using-fnirs
#11
Hama Watanabe, Yoshihiko Shitara, Yoshinori Aoki, Takanobu Inoue, Shinya Tsuchida, Naoto Takahashi, Gentaro Taga
A crucial issue in neonatal medicine is the impact of preterm birth on the developmental trajectory of the brain. Although a growing number of studies have shown alterations in the structure and function of the brain in preterm-born infants, we propose a method to detect subtle differences in neurovascular and metabolic functions in neonates and infants. Functional near-infrared spectroscopy (fNIRS) was used to obtain time-averaged phase differences between spontaneous low-frequency (less than 0.1 Hz) oscillatory changes in oxygenated hemoglobin (oxy-Hb) and those in deoxygenated hemoglobin (deoxy-Hb)...
February 28, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28190559/use-of-renal-near-infrared-spectroscopy-measurements-in-congenital-diaphragmatic-hernia-patients-on-ecmo
#12
Patricio E Lau, Stephanie Cruz, Joseph Garcia-Prats, Milenka Cuevas, Christopher Rhee, Darrell L Cass, Sarah E Horne, Timothy C Lee, Stephen E Welty, Oluyinka O Olutoye
INTRODUCTION: This study tests the hypothesis that renal tissue oxygen saturation as measured by Near Infrared Spectroscopy (NIRS) would correlate with urine output in neonates with congenital diaphragmatic hernia (CDH) on extracorporeal membrane oxygenation (ECMO). METHODS: Between 2012 and 2015, neonates with CDH were enrolled as part of a comprehensive study that provided renal/cerebral/abdominal NIRS monitoring for the duration of ECMO support. Continuous NIRS measurements, mean arterial pressure, and urine output were recorded...
January 27, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28141793/sex-specific-associations-between-cerebrovascular-blood-pressure-autoregulation-and-cardiopulmonary-injury-in-neonatal-encephalopathy-and-therapeutic-hypothermia
#13
Raul Chavez-Valdez, Matthew O'Connor, Jamie Perin, Michael Reyes, Jillian Armstrong, Charlamaine Parkinson, Maureen Gilmore, Jacky Jennings, Frances J Northington, Jennifer K Lee
BACKGROUND: Cardiopulmonary injury is common in neonatal encephalopathy, but the link with cerebrovascular dysfunction is unknown. We hypothesized that alterations of cerebral autoregulation are associated with cardiopulmonary injury in neonates treated with therapeutic hypothermia (TH) for neonatal encephalopathy. METHODS: The cerebral hemoglobin volume index (HVx) from near-infrared spectroscopy was used to identify the mean arterial blood pressure (MAP) with optimal autoregulatory vasoreactivity (MAPOPT)...
March 1, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28130246/severe-hypercapnia-causes-reversible-depression-of-aeeg-background-activity-in-neonates-an-observational-study
#14
Lauren C Weeke, Laura M L Dix, Floris Groenendaal, Petra M A Lemmers, Koen P Dijkman, Peter Andriessen, Linda S de Vries, Mona C Toet
INTRODUCTION: Elevated carbon dioxide (CO2) blood levels have a depressant effect on the central nervous system and can lead to coma in adults. Less is known about the effect of CO2 on the neurological function of infants. OBJECTIVE: To describe the effect of acute severe hypercapnia (PaCO2 >70 mm Hg) on amplitude-integrated electroencephalography (aEEG) and cerebral oxygenation in newborn infants. STUDY DESIGN: Observational study of full-term and preterm infants with acute severe hypercapnia (identified by arterial blood gas measurements), monitored with aEEG...
January 27, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28113987/optical-characterization-of-tissue-phantoms-using-a-silicon-integrated-fdnirs-system-on-chip
#15
Chirag C Sthalekar, Yun Miao, Valencia Joyner Koomson
An interface circuit with signal processing and digitizing circuits for a high frequency, large area avalanche photodiode (APD) has been integrated in a 130 nm BiCMOS chip. The system enables the absolute oximetry of tissue using frequency domain Near Infrared Spectroscopy (fdNIRS). The system measures the light absorbed and scattered by the tissue by measuring the reduction in the amplitude of signal and phase shift introduced between the light source and detector which are placed a finite distance away from each other...
April 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28102856/the-impact-of-integrated-evaluation-of-hemodynamics-using-targeted-neonatal-echocardiography-with-indices-of-tissue-oxygenation-a-new-approach
#16
Y N Elsayed, R Amer, M M Seshia
OBJECTIVE: To study the impact of integrated evaluation of hemodynamics (IEH) using targeted neonatal echocardiography, together with regional tissue oxygenation, fractional oxygen extraction using near-infrared spectroscopy on the management of infants with compromised hemodynamics. STUDY DESIGN: Retrospective cohort comparison of two groups of infants with compromised hemodynamics. EPOCH 1: did not undergo IEH (January 2012 to March 2014); EPOCH 2: underwent IEH (April 2014 to December 2015)...
January 19, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28099981/use-of-esophageal-hemoximetry-to-assess-the-effect-of-packed-red-blood-cell-transfusion-on-gastrointestinal-oxygenation-in-newborn-infants
#17
Farha M Vora, Judy Gates, Kimberley Gerard, Shawn Hanson, Richard L Applegate, Arlin B Blood
Objectives There are no widely accepted methods of continuously monitoring gut oxygenation in the newborn during packed red blood cell transfusion. We investigated the use of an orally inserted light spectroscopy probe to measure lower esophageal oxyhemoglobin saturations (eStO2) before, during, and after transfusion and made comparisons with abdominal near-infrared spectroscopy (NIRS) and superior mesenteric artery (SMA) flow. Study Design Thirteen neonates with corrected gestational ages ranging from 22 weeks, 0 day to 37 weeks, 5 days were enrolled...
January 18, 2017: American Journal of Perinatology
https://www.readbyqxmd.com/read/28096239/skin-to-skin-care-in-preterm-infants-receiving-respiratory-support-does-not-lead-to-physiological-instability
#18
Laila Lorenz, Jennifer A Dawson, Hannah Jones, Susan E Jacobs, Jeanie L Cheong, Susan M Donath, Peter G Davis, C Omar F Kamlin
OBJECTIVE: Providing skin-to-skin care (SSC) to preterm infants is standard practice in many neonatal intensive care units. There are conflicting reports on the stability of oxygen saturation (SpO2) during SSC, which may create a barrier to a wider implementation of SSC to infants receiving respiratory support. Regional cerebral oxygenation (rcO2) measured using near-infrared spectroscopy can serve as a surrogate parameter for cerebral oxygen delivery and consumption. We hypothesised that rcO2 during SSC would be similar to standard care in preterm infants receiving respiratory support...
January 17, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28086963/near-infrared-spectroscopy-for-body-fat-sensing-in-neonates-quantitative-analysis-by-gamos-simulations
#19
Fatin Hamimi Mustafa, Peter W Jones, Alistair L McEwan
BACKGROUND: Under-nutrition in neonates is closely linked to low body fat percentage. Undernourished neonates are exposed to immediate mortality as well as unwanted health impacts in their later life including obesity and hypertension. One potential low cost approach for obtaining direct measurements of body fat is near-infrared (NIR) interactance. The aims of this study were to model the effect of varying volume fractions of melanin and water in skin over NIR spectra, and to define sensitivity of NIR reflection on changes of thickness of subcutaneous fat...
January 11, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28067688/perioperative-near-infrared-spectroscopy-monitoring-in-neonates-with-congenital-heart-disease-relationship-of-cerebral-tissue-oxygenation-index-variability-with-neurodevelopmental-outcome
#20
Michael C Spaeder, Darren Klugman, Kami Skurow-Todd, Penny Glass, Richard A Jonas, Mary T Donofrio
OBJECTIVES: To evaluate the value of perioperative cerebral near-infrared spectroscopy monitoring using variability analysis in the prediction of neurodevelopmental outcomes in neonates undergoing surgery for congenital heart disease. DESIGN: Retrospective cohort study. SETTING: Urban, academic, tertiary-care children's hospital. PATIENTS: Neonates undergoing surgery with cardiopulmonary bypass for congenital heart disease...
March 2017: Pediatric Critical Care Medicine
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