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Neonatal Near infrared spectroscopy

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https://www.readbyqxmd.com/read/29021987/spatial-variation-in-the-hemoglobin-phase-of-oxygenation-and-deoxygenation-in-the-developing-cortex-of-infants
#1
Gentaro Taga, Hama Watanabe, Fumitaka Homae
Spontaneous low-frequency oscillatory changes in oxygenated hemoglobin (oxy-Hb) and deoxygenated hemoglobin (deoxy-Hb) are observed using functional near-infrared spectroscopy (fNIRS). A previous study showed that the time-averaged phase difference between oxy-Hb and deoxy-Hb changes, referred to as hemoglobin phase of oxygenation and deoxygenation (hPod), is sensitive to the development of the cortex. We examined phase-locking index of hPod, referred to as [Formula: see text], in addition to hPod, in neonates and 3- and 6-month-old infants using the 94-channel fNIRS data, which covered large lateral regions of the cortex...
January 2018: Neurophotonics
https://www.readbyqxmd.com/read/29019815/an-international-multicenter-observational-study-of-cerebral-oxygenation-during-infant-and-neonatal-anesthesia
#2
Vanessa A Olbrecht, Justin Skowno, Vanessa Marchesini, Lili Ding, Yifei Jiang, Christopher G Ward, Gaofeng Yu, Huacheng Liu, Bernadette Schurink, Laszlo Vutskits, Jurgen C de Graaff, Francis X McGowan, Britta S von Ungern-Sternberg, Charles Dean Kurth, Andrew Davidson
BACKGROUND: General anesthesia during infancy is associated with neurocognitive abnormalities. Potential mechanisms include anesthetic neurotoxicity, surgical disease, and cerebral hypoxia-ischemia. This study aimed to determine the incidence of low cerebral oxygenation and associated factors during general anesthesia in infants. METHODS: This multicenter study enrolled 453 infants aged less than 6 months having general anesthesia for 30 min or more. Regional cerebral oxygenation was measured by near-infrared spectroscopy...
October 11, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28981572/spinal-anaesthesia-in-neonates-and-infants-what-about-the-cerebral-oxygen-saturation
#3
C Sola, L Hertz, S Bringuier, P De La Arena, C Macq, S Deziel-Malouin, O Raux, C Dadure
Background: Spinal Anaesthesia (SA) has been firmly established as an efficient and safe technique, with minimal cardio-respiratory disturbance when administered in the neonatal period. Our objective was to assess the haemodynamic consequences of SA in infants, particularly its impact on cerebral perfusion using near-infrared spectroscopy (NIRS)-based cerebral oximetry (r S c O2 ). Methods: All infants up to 60 weeks' postmenstrual age, whether formerly preterm or not, and undergoing spinal anaesthesia, were enrolled...
July 19, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28960522/near-infrared-spectroscopy-is-a-promising-non-invasive-technique-for-monitoring-the-effects-of-feeding-regimens-on-the-cerebral-and-splanchnic-regions
#4
Alice Grometto, Benedetta Pizzo, Maria Chiara Strozzi, Francesca Gazzolo, Diego Gazzolo
AIM: The effects of different milk and, or, administration regimens on cerebro-splanchnic perfusion are still a matter of debate. We investigated the effects of the bolus administration of breast milk or formula on cerebro-splanchnic oximetry, function and perfusion, assessed by near-infrared spectroscopy (NIRS). METHODS: This observational study of 30 infants fed with breast (n=15) or formula (n=15) milk, and matched for gestational age and birth weight, was carried out in the neonatal intensive care unit of the C Arrigo Children's Hospital, Alessandria, Italy, a tertiary level referral centre, from October 2015 to December 2016...
September 27, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28958087/neonatal-sleep-wake-analyses-predict-18-month-neurodevelopmental-outcomes
#5
R A Shellhaas, J W Burns, F Hassan, M D Carlson, J D E Barks, R D Chervin
Objectives: The neurological examination of critically ill neonates is largely limited to reflexive behavior. The exam often ignores sleep-wake physiology that may reflect brain integrity and influence long-term outcomes. We assessed whether polysomnography and concurrent cerebral near-infrared spectroscopy (NIRS) might improve prediction of 18-month neurodevelopmental outcomes. Methods: Term newborns with suspected seizures underwent standardized neurologic examinations to generate Thompson scores, and had 12-hour bedside polysomnography with concurrent cerebral NIRS...
August 29, 2017: Sleep
https://www.readbyqxmd.com/read/28925890/the-use-of-hemodynamic-and-cerebral-monitoring-to-study-pharmacodynamics-in-neonates
#6
A Smits, L Thewissen, A Dereymaeker, E Dempsey, A Caicedo, Gunnar Naulaers
BACKGROUND: Drugs acting on the cardiovascular and central nervous system often display relatively fast clinical responses, which may differ in neonates compared to children and adults. Introduction of bedside monitoring tools might be of additional value in the pharmacodynamic (PD) assessment of such drugs in neonates. METHODS: We aim to provide an overview of the frequently used monitoring tools to assess drug effects on the hemodynamic status as well as the cerebral circulation, oxygenation and cerebral metabolism in neonates...
September 18, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28869278/cerebral-near-infrared-spectroscopy-monitoring-for-prevention-of-brain-injury-in-very-preterm-infants
#7
REVIEW
Simon Hyttel-Sorensen, Gorm Greisen, Bodil Als-Nielsen, Christian Gluud
BACKGROUND: Cerebral injury and long-term neurodevelopmental impairment is common in extremely preterm infants. Cerebral near-infrared spectroscopy (NIRS) enables continuous estimation of cerebral oxygenation. This diagnostic method coupled with appropriate interventions if NIRS is out of normal range (that is cerebral oxygenation within the 55% to 85% range) may offer benefits without causing more harms. Therefore, NIRS coupled with appropriate responses to abnormal findings on NIRS needs assessment in a systematic review of randomised clinical trials and quasi-randomised studies...
September 4, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28856710/cerebral-oxygenation-measured-by-near-infrared-spectroscopy-correlates-with-arterial-oxygenation-only-poorly-in-preterm-infants-a-strength-of-that-technology
#8
Berndt Urlesberger, Gerhard Pichler
We read with interest the article by Hunter et al, titled "Cerebral oxygenation as measured by near-infrared spectroscopy in neonatal intensive care: correlation with arterial oxygenation". We agree that cerebral oxygenation only correlates poorly with the arterial oxygenation in preterm infants. We do not agree with the authors conclusions that this is a disadvantage of near-infrared spectroscopy (NIRS) and that "strong correlation between rScO2 and ABG parameters such as SaO2, SpO2 and PaCO2 would have provided more clinically meaningful implications...
August 30, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28842278/discrimination-of-emotional-prosodies-in-human-neonates-a-pilot-fnirs-study
#9
Dandan Zhang, Yu Zhou, Xinlin Hou, Yun Cui, Congle Zhou
Very early in development, vocal emotional cues are more critical than facial expressions in guiding infants' behavior. However, the processing of emotional prosody in the very early days of life is still far from clearly understood. To address the issue, this study used functional near-infrared spectroscopy to examine brain response of neonates when they passively listened to fearful, angry, happy and neutral prosodies. It was found that while the right temporal cortex (mainly located in the middle temporal gyrus and superior temporal gyrus) exhibited enhanced response to emotional, relative to neutral, prosody, a right parietal area (approximately located in the supramarginal gyrus) showed a heightened sensitivity to fearful, relative to happy and neutral, prosody...
September 29, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28840165/in-vivo-measure-of-neonate-brain-optical-properties-and-hemodynamic-parameters-by-time-domain-near-infrared-spectroscopy
#10
Lorenzo Spinelli, Lucia Zucchelli, Davide Contini, Matteo Caffini, Jacques Mehler, Ana Fló, Alissa L Ferry, Luca Filippin, Francesco Macagno, Luigi Cattarossi, Alessandro Torricelli
By exploiting a multichannel portable instrument for time-domain near-infrared spectroscopy (TD-NIRS), we characterized healthy neonates' brains in term of optical properties and hemodynamic parameters. In particular, we assessed the absolute values of the absorption and reduced scattering coefficients at two wavelengths, together with oxy-, deoxy- and total hemoglobin concentrations, and the blood oxygen saturation of the neonates' brains. In this study, 33 healthy full-term neonates were tested, obtaining the following median values: 0...
October 2017: Neurophotonics
https://www.readbyqxmd.com/read/28823017/near-infrared-spectroscopy-monitoring-during-immediate-transition-after-birth-time-to-obtain-cerebral-tissue-oxygenation
#11
Evelyn Ziehenberger, Berndt Urlesberger, Corinna Binder-Heschl, Bernhard Schwaberger, Nariae Baik-Schneditz, Gerhard Pichler
Feasibility of cerebral tissue oxygenation measurements immediately after birth has been published starting with first values 2 min after birth. Aim of this study was to evaluate, the time periods from birth and from arrival at the resuscitation table to obtain the first cerebral tissue oxygenation values with two different near infrared spectroscopy (NIRS) devices. The present study is an analysis of exploratory parameters of two prospective observational studies. Cerebral tissue oxygen saturation was measured by the NIRO 200NX measuring "cerebral-tissue-oxygenation-index" (cTOI) or the INVOS5100C measuring "cerebral-regional-oxygen-saturation" (crSO2)...
August 19, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28772198/cerebral-regional-oxygen-saturation-trends-in-infants-with-hypoxic-ischemic-encephalopathy
#12
Siddharth V Jain, Lindsay Pagano, Maria Gillam-Krakauer, James C Slaughter, Sumit Pruthi, Barbara Engelhardt
BACKGROUND: Neurological outcomes in neonatal hypoxic-ischemic encephalopathy (HIE) continue to be sub-optimal despite therapeutic hypothermia (TH). Cerebral near-infrared spectroscopy provides real-time regional oxygen saturation (CrSO2) that may be a marker of adverse MRI findings and neurodevelopmental outcomes. AIM: The aim of this study was to examine the value of CrSO2 monitoring in infants with HIE undergoing TH. STUDY DESIGN AND SUBJECTS: In this prospective study, CrSO2 was continuously recorded in 21 infants with HIE admitted for TH...
July 31, 2017: Early Human Development
https://www.readbyqxmd.com/read/28764821/investigating-the-role-of-near-infrared-spectroscopy-in-neonatal-medicine
#13
Kaylee M Evans, Lori B Rubarth
Near-infrared spectroscopy (NIRS) is a clinical tool that provides a bedside method of noninvasively measuring continuous, "real-time" oxygen consumption and monitoring for potential ischemia of somatic tissues, particularly the brain, kidneys, and intestine in neonates. Although the concept of NIRS seems promising, its implementation into clinical practice has been inconsistent for various reasons, including difficulty in interpreting regional oxygen saturation (rSO2), the wide variation in types of NIRS monitors and probes, the cost of new equipment, different monitoring modalities, large discrepancies in both intra- and interindividual use, a lack of defined universal normative values, and little to no data on outcomes or potentially harmful interventions made based on rSO2 readings...
July 1, 2017: Neonatal Network: NN
https://www.readbyqxmd.com/read/28704822/prediction-of-outcome-in-neonates-with-hypoxic-ischemic-encephalopathy-ii-role-of-amplitude-integrated-electroencephalography-and-cerebral-oxygen-saturation-measured-by-near-infrared-spectroscopy
#14
Katharina Goeral, Berndt Urlesberger, Vito Giordano, Gregor Kasprian, Michael Wagner, Lisa Schmidt, Angelika Berger, Katrin Klebermass-Schrehof, Monika Olischar
BACKGROUND: Few data have been published on the combined use of amplitude-integrated electroencephalography (aEEG) and near-infrared spectroscopy (NIRS) for outcome prediction in neonates cooled for hypoxic-ischemic encephalopathy (HIE). OBJECTIVE: Our aim was to evaluate the predictive values and the most powerful predictive combinations of single aEEG and NIRS parameters and the respective cut-off values with regard to short-term outcomes in HIE II. METHODS: aEEG and NIRS were prospectively studied at the Medical University of Vienna in the first 102 h of life with regard to magnetic resonance imaging (MRI)...
2017: Neonatology
https://www.readbyqxmd.com/read/28685437/relation-between-eeg-activity-and-brain-oxygenation-in-preterm-neonates
#15
Alexander Caicedo, Liesbeth Thewissen, Anne Smits, Gunnar Naulaers, Karel Allegaert, Sabine Van Huffel
This study investigates the relationship between brain oxygenation, assessed by means of near infrared spectroscopy (NIRS), and brain function, assessed by means of electroencephalography (EEG). Using NIRS signals measuring the regional cerebral oxygen saturation (rScO2) and computing the fractional tissue oxygen extraction (FTOE), we compared how these variables relate to different features extracted from the EEG, such as the inter-burst interval (IBI) duration and amplitude, the amplitude of the EEG, and the amplitude of the burst...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28665923/noninvasive-continuous-cardiac-output-and-cerebral-perfusion-monitoring-in-term-infants-with-neonatal-encephalopathy-assessment-of-feasibility-and-reliability
#16
Eva Forman, Colm R Breatnach, Stephanie Ryan, Jana Semberova, Jan Miletin, Adrienne Foran, Afif El-Khuffash
BackgroundNoninvasive hemodynamic monitoring of infants with neonatal encephalopathy (NE) undergoing therapeutic hypothermia (TH) would be a potentially useful clinical tool. We aimed to assess the feasibility and reliability of noninvasive cardiac output monitoring (NICOM) and near-infrared spectroscopy (NIRS) in this cohort.MethodsNICOM and NIRS were commenced to measure cardiac output (CO), systemic vascular resistance (SVR), blood pressure (BP), and cerebral regional oxygen saturations (SctO2) during TH and rewarming...
November 2017: Pediatric Research
https://www.readbyqxmd.com/read/28660179/monitoring-cerebral-and-renal-oxygenation-status-during-neonatal-digestive-surgeries-using-near-infrared-spectroscopy
#17
Jonathan Beck, Gauthier Loron, Claire Masson, Marie-Laurence Poli-Merol, Eliane Guyot, Camille Guillot, Nathalie Bednarek, Caroline François
BACKGROUND: Depending on the initial pathology, hypovolemia, intra-abdominal hypertension, and sepsis are often encountered in neonatal digestive surgery. Accurate newborn monitoring during and after surgery is essential to adapt resuscitation protocols. Near infrared spectroscopy (NIRS) is non-invasive and can detect hypoperfusion which indicates a low circulatory blood flow, regardless of the cause. OBJECTIVE: Evaluating changes in cerebral and renal regional oxygen saturation during neonatal digestive surgeries, conducted according to normal practices, with commonly used monitoring parameters...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28653463/does-hypothermia-impair-cerebrovascular-autoregulation-in-neonates-during-cardiopulmonary-bypass
#18
Brendan Smith, Eric Vu, Kathleen Kibler, Craig Rusin, Ronald B Easley, Dean Andropoulos, Jeffrey Heinle, Marek Czosnyka, Daniel Licht, Jennifer Lynch, Ken Brady
BACKGROUND: Autoregulation monitoring has been proposed as a means to identify optimal arterial blood pressure goals during cardiopulmonary bypass, but it has been observed that cerebral blood flow is pressure passive during hypothermic bypass. When neonates cooled during cardiopulmonary bypass are managed with vasodilators and controlled hypotension, it is not clear whether hypothermia or hypotension were the cause of impaired autoregulation. AIM: We sought to measure the effect of both arterial blood pressure and hypothermia on autoregulation in a cohort of infants cooled for bypass, hypothesizing a collinear relationship between hypothermia, hypotension, and dysautoregulation...
September 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28651978/changes-in-cerebral-oxygenation-in-preterm-infants-with-progressive-posthemorrhagic-ventricular-dilatation
#19
Michael Kochan, Jacob McPadden, William T Bass, Tushar Shah, Wendy T Brown, Gary W Tye, Turaj Vazifedan
BACKGROUND: Optimal timing of intervention in neonatal progressive posthemorrhagic hydrocephalus is often a difficult decision. Unchecked hydrocephalus can lead to irreversible brain injury through impaired perfusion, while placement of a shunt is not without long-term morbidity. The purpose of this study was to assess the use of near-infrared spectroscopy to measure changes in regional cerebral oxygen saturation as an indicator of cerebral perfusion in infants with progressive posthemorrhagic ventricular dilatation...
August 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28634025/impaired-cerebral-autoregulation-in-preoperative-newborn-infants-with-congenital-heart-disease
#20
Jodie K Votava-Smith, Christopher J Statile, Michael D Taylor, Eileen C King, Jesse M Pratt, David P Nelson, Erik C Michelfelder
OBJECTIVES: To characterize cerebral autoregulation (CA) in preoperative newborn infants with congenital heart disease (CHD). METHODS: This was a prospective, pilot study of term newborns with CHD who required intensive care. Continuous mean arterial blood pressure (MAP), cerebral tissue oxygen saturation (SCTO2) via near-infrared spectroscopy, and arterial oxygen saturation (SaO2) were collected. Significant low-frequency coherence between MAP and SCTO2 was used to define impaired CA in 20-minute epochs...
September 2017: Journal of Thoracic and Cardiovascular Surgery
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