Tags Archives: near-infrared spectroscopy

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Near-Infrared Spectroscopy for Preventing Limb Ischemia in Extracorporeal Membrane Oxygenation

Abstract Background Limb ischemia is a serious complication of venoarterial (VA) extracorporeal membrane oxygenation (ECMO), potentially resulting in amputation, rhabdomyolysis, or death. This study aimed to evaluate the effectiveness of..

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Evaluation of a low-cost portable NIRS device for monitoring muscle ischemia

Abstract The main objective of this study is to evaluate the low-cost, open-source HEGduino device as a tissue oximetry monitor to advance the research of somatic NIRS monitoring. Specifically, this..

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Prognostic Value of Perioperative Near-Infrared Spectroscopy Monitoring for Postoperative Acute Kidney Injury in Pediatric Cardiac Surgery: A Systematic Review

Abstract Introduction Postoperative acute kidney injury (AKI) is a common postoperative complication in cardiac surgery, with varying reported incidences and prognostic factors. Renal hypoperfusion is believed to be a key..

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A Novel Approach to Sequential Organ Failure Assessment (SOFA) Using Near-Infrared Spectroscopy in Extracorporeal Membrane Oxygenation (ECMO) Patients

Abstract Extracorporeal membrane oxygenation (ECMO) is a medical device that provides temporary external circulation and respiratory support during heart-lung procedures, substituting for heart and lung function to alleviate their burden..

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The value of cerebral and somatic near-infrared spectroscopy within an integrated tissue perfusion monitoring strategy in cardiac surgery: A prospective…

Abstract Introduction We sought to evaluate cerebral and somatic oximetry in an integrated tissue perfusion monitoring strategy. Method Thirty adult patients undergoing full-spectrum cardiac surgery with Minimal Invasive Extracorporeal Circulation..

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Near-infrared spectroscopy to monitor cerebral and renal oxygen saturation during cardiopulmonary bypass surgery for paediatric congenital heart disease: study protocol…

Abstract Background Current indicators for monitoring intraoperative organ function remain predominantly indirect, delayed and non-specific, particularly in paediatric populations undergoing congenital heart surgery, where multifactorial influences further complicate functional assessments. Emerging..

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The Role of Continuous Monitoring of Venous Drainage Flow and Integrated Oxygen Extraction (ERiO2) via Bilateral Near-Infrared Spectroscopy in Cerebral…

Abstract Background and Objective:  Effective cerebral perfusion monitoring is essential in aortic arch surgery, particularly when employing the Kazui technique under moderate hypothermia. Near-infrared spectroscopy (NIRS) provides real-time regional oxygen..

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Near-infrared spectroscopy combined with vascular occlusion test to predict acute kidney injury in patients undergoing cardiac surgery: a prospective observational…

Abstract Background Near-infrared spectroscopy (NIRS) enables a non-invasive measurement of tissue oxygen saturation (StO2) in regions illuminated by near-infrared lights. Vascular occlusion test (VOT) serves as a model to artificially..

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Effects of Pulsatile and Non-Pulsatile Cardiopulmonary Bypass Techniques in Coronary Artery Bypass Grafting Surgeries on Cerebral Perfusion

Abstract Objective:   We aimed to evaluate the effects of cardiopulmonary bypass (CPB) machines used in coronary artery bypass grafting surgeries on cerebral perfusion by performing cerebral oximetry monitoring [near-infrared..

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Trends on Near-Infrared Spectroscopy Associated With Acute Brain Injury in Venoarterial Extracorporeal Membrane Oxygenation

Abstract We aimed to determine the association between cerebral regional oxygen saturation (rSO2) trends from cerebral near-infrared spectroscopy (cNIRS) and acute brain injury (ABI) in adult venoarterial extracorporeal membrane oxygenation (VA-ECMO) patients. ABI was defined as..

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Absolute Versus Relative Near-Infrared Spectroscopy in Pediatric Cardiac Patients

Abstract OBJECTIVES:  Near-infrared spectroscopy (NIRS) has been increasingly accepted as a noninvasive marker of regional tissue oxygenation despite concerns of imprecision and wide limits of agreement (LOA) with invasive oximetry. New generation absolute..

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The Occurrence and Association of Impaired Cerebral Autoregulation With Outcomes in Aortic Arch Surgery: A Single-Center, Retrospective Study

Abstract Backgroundː Impairment of cerebral autoregulation (CA) has been observed in patients undergoing cardiopulmonary bypass (CPB), but little is known about its occurrence and associations with outcomes. The objective of this..

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Near-infrared spectroscopy device selection affects intervention management for cerebral desaturation during cardiopulmonary bypass surgery

Abstract Objective Currently, several near-infrared spectroscopy oximetry devices are used for detecting cerebral ischemia during cardiopulmonary bypass (CPB) surgery. We investigated whether two different models of near-infrared spectroscopy oximetry devices..

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NNeMo (Neonatal NeuroMonitor) - a hybrid optical system to characterize perfusion and metabolism in the newborn brain

Abstract Premature birth, defined as a gestational period less than 37 weeks, occurs in 8% of infants born in Canada. These births are associated with a higher risk of developing..

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Cerebral oxygen saturation (rSO2) during cardiopulmonary bypass (CPB) measured using the INVOS oximeter closely correlates with baseline rSO2

Abstract Baseline cerebral regional saturation (rSO2) measured using the INVOS 5100C (Medtronic, MN, USA) varies widely among patients with cardiac and/or renal diseases. To identify significant correlates of baseline rSO2 and..

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Determining Thresholds for Three Indices of Autoregulation to Identify the Lower Limit of Autoregulation During Cardiac Surgery

Abstract OBJECTIVES:  Monitoring cerebral autoregulation may help identify the lower limit of autoregulation in individual patients. Mean arterial blood pressure below lower limit of autoregulation appears to be a risk..

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Perioperative Near-Infrared Spectroscopy Monitoring in Neonates With Congenital Heart Disease: Relationship of Cerebral Tissue Oxygenation Index Variability With Neurodevelopmental Outcome

Abstract 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: ..

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Neurodevelopmental outcome in hypoplastic left heart syndrome: Impact of perioperative cerebral tissue oxygenation of the Norwood procedure

Abstract Objectives Patients with  are at risk for neurodevelopmental impairment.  during neonatal treatment might be a relevant cause. We evaluated the association between cerebral oxygenation in the perioperative course of the  and neurodevelopmental..

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Non-invasive Monitoring of Hepatic Oxygenation Using Time-Resolved Spectroscopy

Abstract The aim of the present study was to investigate whether changes in hepatic oxygenation can be detected by time-resolved spectroscopy (TRS) placed on the skin surface above the liver...

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A Novel Assessment of Peripheral Tissue Microcirculatory Vasoreactivity Using Vascular Occlusion Testing During Cardiopulmonary Bypass

Abstract Objective Cardiac surgery and  are associated with release of  and microcirculatory alterations that result in organ dysfunction. Near-infrared  of tissue  (StO2) and the  test (VOT) were utilized in a study of elective cardiac surgical..

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Clinical and Technical Limitations of Cerebral and Somatic Near-Infrared Spectroscopy as an Oxygenation Monitor

Abstract Cerebral and somatic near-infrared spectroscopy monitors are commonly used to detect tissue oxygenation in various circumstances. This form of monitoring is based on tissue infrared absorption and can be..

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Current status of brain protection during surgery for congenital cardiac defect

Abstract The long-term neurodevelopmental outcome has been a great concern for cardiac surgeons although it is still unclear. There are some risks regarding the neurological and neuropsychological deficits before, during..

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Cognitive Dysfunction, Delirium, and Stroke in Cardiac Surgery Patients

Abstract Neurologic injury in the form of cognitive decline, delirium, and stroke are common phenomena in patients undergoing cardiac surgery and continues to be one of the most common complication..

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Cerebral oximetry the standard monitor of the future?

Abstract Purpose of review  There is an increasing interest in the application of near-infrared spectroscopy (NIRS) as a monitoring tool in noncardiac surgery. This review summarizes the latest developments and..

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Peripheral circulation evaluation with near-infrared spectroscopy in skeletal muscle during cardiopulmonary bypass

Abstract Background: We designed a non-invasive, observational, real-time study, using near-infrared spectroscopy (NIRS) to assess the in vivo effects of cardiopulmonary bypass (CPB) on patients’ skeletal muscle as well as..

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Cardiac Surgery–Associated Kidney Injury in Children and Renal Oximetry

Abstract Objectives:  Cardiac surgery–associated acute kidney injury is common in children and associates with negative outcomes. Novel interventions to reduce cardiac surgery–associated acute kidney injury require knowledge of its pathophysiology...

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