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Cerebral oximetry

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https://www.readbyqxmd.com/read/29145041/transradial-access-for-cerebrovascular-angiography-evaluation-of-palmar-collateral-circulation-with-hand-angiography-and-its-correlation-with-allen-test
#1
Woo-Keun Kwon, Wonki Yoon, Taek-Hyun Kwon, Jong Hyun Kim, Heung-Sub Jung, Jaegeun Ahn, Hanyong Huh, Choel Ji
OBJECTIVES: Transradial cerebral angiography (TRCA) has been introduced as an alternative technique for the transfemoral access, and its use is becoming more common in the field. In this study, we retrospectively analyzed a group of patients who received TRCA, and investigated peri-procedural measurements indicating actual hand circulation, and studied their correlation with the Allen test. PATIENTS AND METHODS: A retrospective review of 168 patients whom underwent TRCA between 2015 July and 2016 July, were included in this study...
October 31, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29140931/hemispheric-cerebral-oximetry-monitoring-during-pediatric-seizure-activity-in-a-pediatric-emergency-department
#2
Thomas J Abramo, Shane McKinney, James Moore, Richard Jacobs, Gregory Albert, Mark Meredith, Nicholas Hobart Porter, Elizabeth Storm, Errin Willis, Cruz Velasco Gonzalez, Hailey Hargrave, Brad Schneider, Gergory Sharp
BACKGROUND: Sustained neuronal activity during seizures causes cellular perturbations, alterations in cerebral physiology, and potentially neurological injury, a neurological emergency. With variable clinical manifestations of seizures, frequent failure of seizure recognition by providers in pediatric and developmentally challenged patients can increase seizure complications. Neuroresuscitation should include rapid cerebral physiology assessment for increased seizure recognition and optimal neurological outcomes...
November 15, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29126675/combined-somatic-and-cerebral-oximetry-monitoring-in-liver-transplantation-a-novel-approach-to-clinical-diagnosis
#3
EDITORIAL
Kristen K Burton, Elizabeth A Valentine
No abstract text is available yet for this article.
September 1, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29118365/impaired-development-of-the-cerebral-cortex-in-infants-with-congenital-heart-disease-is-correlated-to-reduced-cerebral-oxygen-delivery
#4
Christopher J Kelly, Antonios Makropoulos, Lucilio Cordero-Grande, Jana Hutter, Anthony Price, Emer Hughes, Maria Murgasova, Rui Pedro A G Teixeira, Johannes K Steinweg, Sagar Kulkarni, Loay Rahman, Hui Zhang, Daniel C Alexander, Kuberan Pushparajah, Daniel Rueckert, Joseph V Hajnal, John Simpson, A David Edwards, Mary A Rutherford, Serena J Counsell
Neurodevelopmental impairment is the most common comorbidity associated with complex congenital heart disease (CHD), while the underlying biological mechanism remains unclear. We hypothesised that impaired cerebral oxygen delivery in infants with CHD is a cause of impaired cortical development, and predicted that cardiac lesions most associated with reduced cerebral oxygen delivery would demonstrate the greatest impairment of cortical development. We compared 30 newborns with complex CHD prior to surgery and 30 age-matched healthy controls using brain MRI...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29084012/effects-of-changes-in-arterial-carbon-dioxide-and-oxygen-partial-pressures-on-cerebral-oximeter-performance
#5
Andrew Schober, John R Feiner, Philip E Bickler, Mark D Rollins
BACKGROUND: Cerebral oximetry (cerebral oxygen saturation; ScO2) is used to noninvasively monitor cerebral oxygenation. ScO2 readings are based on the fraction of reduced and oxidized hemoglobin as an indirect estimate of brain tissue oxygenation and assume a static ratio of arterial to venous intracranial blood. Conditions that alter cerebral blood flow, such as acute changes in PaCO2, may decrease accuracy. We assessed the performance of two commercial cerebral oximeters across a range of oxygen concentrations during normocapnia and hypocapnia...
October 30, 2017: Anesthesiology
https://www.readbyqxmd.com/read/29067809/combined-in-vivo-amperometric-oximetry-and-electrophysiology-in-a-single-sensor-a-tool-for-epilepsy-research
#6
Ana Ledo, Cátia F Lourenço, João Laranjinha, Greg A Gerhardt, Rui M Barbosa
Seizures are paroxysmal events in which increased neuronal activity is accompanied by an increase in localized energetic demand. The ability to simultaneously record electrical and chemical events using a single sensor poses a promising approach to identify seizure onset zones in the brain. In the present work, we used ceramic-based platinum microelectrode arrays (MEAs) to perform high-frequency amperometric recording of local pO2 and local field potential (LFP)-related currents during seizures in the hippocampus of chronically implanted freely moving rats...
November 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29049525/impact-of-the-haga-braincare-strategy-on-the-burden-of-haemodynamic-and-embolic-strokes-related-to-cardiac-surgery
#7
Friso Duynstee, Ruud W M Keunen, Agnes van Sonderen, Ali M Keyhan-Falsafi, Gerard J F Hoohenkerk, Gayleen Stephens, Erik Teeuws, Jan W K van Alphen, Dénes L J Tavy, Arne Mosch, Sebastiaan F T M de Bruijn, Hans van Overhagen, Frank E E Treurniet, Lucas C van Dijk, Paulien M van Kampen
OBJECTIVES: This study prospectively evaluates the impact of the Haga Braincare Strategy (HBS) on the occurrence of haemodynamic and embolic stroke in a cohort of patients who underwent coronay artery bypass grafting (CABG), valve replacement of a combination of both types of surgery between 2012 and 2015 at the Haga Teaching Hospitals. METHODS: The HBS is a dual strategy based on a preoperative vascular work-up of the cerebral circulation by transcranial Doppler and a perioperative monitoring of the cerebral circulation by cerebral oximetry...
November 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29036615/monitoring-of-cerebral-oximetry-during-head-up-tilt-test-in-adults-with-history-of-syncope-and-orthostatic-intolerance
#8
E Bachus, H Holm, V Hamrefors, O Melander, R Sutton, M Magnusson, A Fedorowski
Aims: We applied near-infrared-spectroscopy (NIRS) to measure absolute frontal cerebral tissue oxygen saturation (SctO2) during head-up tilt test (HUT) in patients investigated for unexplained syncope. Methods and results: Synchronized non-invasive beat-to-beat haemodynamic monitoring, ECG, SctO2 (NIRS; normal range: 60-80%), and peripheral oxygen saturation (left hand, SpO2) were applied during HUT in a random sample of patients with unexplained syncope. Tracings of 54 patients (mean-age: 55 ± 19 years, 39% male) with negative HUT, vasovagal syncope (VVS), or orthostatic hypotension (OH) were analysed...
September 28, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29034783/cerebral-and-limb-tissue-oxygenation-during-peripheral-venoarterial-extracorporeal-life-support
#9
Nousjka P A Vranken, Anouk A M A Lindelauf, Antoine P Simons, Marcel J H Ariës, Jos G Maessen, Patrick W Weerwind
Femoral access in extracorporeal life support (ECLS) has been associated with regional variations in arterial oxygen saturation, potentially predisposing the patient to ischemic tissue damage. Current monitoring techniques, however, are limited to intermittent bedside evaluation of capillary refill among other factors. The aim of this study was to assess whether cerebral and limb regional tissue oxygen saturation (rSO2) values reflect changes in various patient-related parameters during venoarterial ECLS (VA-ECLS)...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/29026526/recent-advances-in-cerebral-oximetry-assessment-of-cerebral-autoregulation-with-near-infrared-spectroscopy-myth-or-reality
#10
REVIEW
Anneliese Moerman, Stefan De Hert
In recent years, the feasibility of near-infrared spectroscopy to continuously assess cerebral autoregulation has gained increasing interest. By plotting cerebral oxygen saturation over blood pressure, clinicians can generate an index of autoregulation: the cerebral oximetry index (COx). Successful integration of this monitoring ability in daily critical care may allow clinicians to tailor blood pressure management to the individual patient's need and might prove to be a major step forward in terms of patient outcome...
2017: F1000Research
https://www.readbyqxmd.com/read/29019815/an-international-multicenter-observational-study-of-cerebral-oxygenation-during-infant-and-neonatal-anesthesia
#11
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
#12
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 (rSco2). Methods: All infants up to 60 weeks' postmenstrual age, whether formerly preterm or not, and undergoing spinal anaesthesia, were enrolled...
November 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28979042/cerebral-oximetry-and-autoregulation-during-cardiopulmonary-bypass-a-review
#13
REVIEW
Nousjka P A Vranken, Patrick W Weerwind, Nadia A Sutedja, Ervin E Ševerdija, Paul J C Barenbrug, Jos G Maessen
Postoperative neurological complications (PNCs) following cardiac surgery with cardiopulmonary bypass (CPB) is a detrimental complication, contributing to increased mortality rates and health care costs. To prevent intraoperative cerebral desaturations associated with PNC, continuous brain monitoring using near-infrared spectroscopy has been advocated. However, clear evidence for a defined desaturation threshold requiring intervention during CPB is still lacking. Since cerebral oximetry readings are nonspecific, cerebral tissue oxygenation values need to be interpreted with caution and in the context of all available clinical information...
September 2017: Journal of Extra-corporeal Technology
https://www.readbyqxmd.com/read/28979040/the-effect-of-autologus-blood-priming-on-cerebral-oximetry-in-congenital-cardiac-surgery-patients
#14
Ashley Hodge, Apryl Cohen, Peter Winch, Dmitry Tumin, Jeffrey Burnside, Todd Ratliff, Mark Galantowicz, Aymen Naguib
Hemodilution is one of the sequelae of cardiopulmonary bypass (CPB). Autologous blood priming (retrograde autologous priming [RAP]/venous antegrade priming [VAP]) and acute normovolemic hemodilution (ANH) may be effective techniques to minimize hemodilution. The primary objective of this study is to investigate the impact of RAP/VAP combined with ANH on changes in cerebral saturations. A retrospective analysis of 52 patients undergoing congenital cardiac surgery requiring CPB between July 2014 and March 2015 was performed...
September 2017: Journal of Extra-corporeal Technology
https://www.readbyqxmd.com/read/28960522/near-infrared-spectroscopy-is-a-promising-noninvasive-technique-for-monitoring-the-effects-of-feeding-regimens-on-the-cerebral-and-splanchnic-regions
#15
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/28958609/the-importance-of-bilateral-monitoring-of-cerebral-oxygenation-nirs-clinical-case-of-asymmetry-during-cardiopulmonary-bypass-secondary-to-previous-cerebral-infarction
#16
S Matcan, P Sanabria Carretero, M Gómez Rojo, L Castro Parga, F Reinoso-Barbero
Cerebral oximetry based on near infrared spectroscopy (NIRS) technology is used to determine cerebral tissue oxygenation. We hereby present the clinical case of a 12-month old child with right hemiparesis secondary to prior left middle cerebral artery stroke 8 months ago. The child underwent surgical enlargement of the right ventricular outflow tract (RVOT) with cardiopulmonary bypass. During cardiopulmonary bypass, asymmetric NIRS results were detected between both hemispheres. The utilization of multimodal neuromonitoring (NIRS-BIS) allowed acting on both perfusion pressure and anesthetic depth to balance out the supply and demand of cerebral oxygen consumption...
September 25, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28940368/cerebral-oximetry-and-postoperative-delirium-after-cardiac-surgery-a-randomised-controlled-trial
#17
L Lei, R Katznelson, L Fedorko, J Carroll, H Poonawala, M Machina, R Styra, V Rao, G Djaiani
Postoperative delirium is associated with increased morbidity and mortality. We hypothesised that restoration of regional cerebral oxygen desaturation would reduce the incidence of postoperative delirium in elderly patients after cardiac surgery. After institutional ethics review board approval and informed consent, a double-blinded, prospective, randomised, controlled trial was conducted in patients ≥ 60 years of age undergoing cardiac surgery with cardiopulmonary bypass. In the intervention group, an algorithm was commenced if regional cerebral oxygen saturation decreased below 75% of baseline value for 1 min or longer...
December 2017: Anaesthesia
https://www.readbyqxmd.com/read/28940180/cerebral-oximetry-another-blow-to-non-invasive-monitoring
#18
EDITORIAL
G Kunst, Z Milan
No abstract text is available yet for this article.
September 22, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28923611/cerebral-oximetry-as-an-auxiliary-diagnostic-tool-in-the-diagnosis-of-brain-death
#19
O Tatli, O Bekar, M Imamoglu, O Gonenc Cekic, A Aygun, U Eryigit, Y Karaca, A Sahin, S Turkmen, S Turedi
AIM: To investigate the efficacy of cerebral oximetry (CO) as an auxiliary diagnostic tool in brain death (BD). MATERIALS AND METHODS: This observational case-control study was performed on patients with suspected BD. Patients with diagnosis of BD confirmed by the brain death committee were enrolled as the BD group and other patients as the non-BD group. CO monitoring was performed at least 6 h, and cerebral tissue oxygen saturation (ScO2) parameters were compared...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28887152/cerebral-oximetry-leading-up-to-cardiac-arrest-a-marker-of-the-impact-of-mean-arterial-pressure-on-the-brain-but-not-time-of-death
#20
EDITORIAL
Sam Parnia
No abstract text is available yet for this article.
September 5, 2017: Resuscitation
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