Tags Archives: cerebral autoregulation

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Delirium after coronary artery bypass grafting with cardiopulmonary bypass surgery: The value of cerebral autoregulation

Abstract Introduction Postoperative delirium affects up to 60% of cardiac surgical patients. No reliable gold standard method exists for preventing delirium after cardiac surgery. An example of patient-personal monitoring is..

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Exploring the Association Between Early PaCO2 Correction Speed and Cerebrovascular Autoregulation in a Porcine Model of Extracorporeal Resuscitation

Abstract Background Prior clinical research demonstrated that rapid reduction in arterial carbon dioxide (PaCO2) levels during extracorporeal membrane oxygenation (ECMO) is associated with acute brain injury (ABI), which may be..

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Investigating the dynamics of intracranial pressure and cerebral autoregulation during extracorporeal cardiopulmonary resuscitation using a porcine model

Abstract Background Extracorporeal cardiopulmonary resuscitation (ECPR) has emerged as a promising intervention for refractory cardiac arrest, with potential benefits in survival and neurological outcomes. However, the impact of ECPR’s rapid,..

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Intraoperative Assessment of Cerebral Autoregulation With Cerebral Oximetry Index in Neonates Undergoing Cardiac Surgery: A Pilot Study

Abstract Abstract Objective To investigate cerebral autoregulation impairment during neonatal cardiac surgery. Design A retrospective observational study. Setting Single-center, university teaching children’s hospital. Participants Neonates undergoing surgery for critical congenital..

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Impact of cardiopulmonary bypass flow on the lower limit of cerebral autoregulation during cardiac surgery: a randomized cross-over pilot study

Abstract Assessment of cerebral autoregulation is challenging under different hemodynamic conditions during cardiac surgery and must be rapidly calculated in order to optimize mean arterial pressure (MAP). Whether systemic flow..

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Optimal brain perfusion pressure derived from the continuous monitoring of cerebral autoregulation status during neonatal heart surgery under cardiopulmonary bypass…

Abstract Background Understanding cerebral blood flow regulation and later optimizing brain perfusion is part of neuroprotection during cardiopulmonary bypass (CPB) in neonates. Methods A total of 38 neonates undergoing CPB..

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Impaired cerebral autoregulation in children

Abstract Managing acute brain injury involves protecting the brain from secondary injury by addressing the mismatch between metabolic demand and cerebral perfusion. Observational studies have associated impaired cerebral autoregulation, a..

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The Impact of Blood Pressure Below Personalized Lower Cerebral Autoregulation Limit on Outcomes After Cardiac Surgery: A Retrospective Study

Abstract Objective The clinical importance of individualized blood pressure management in optimizing cerebral perfusion during cardiac surgery has been well established. However, consensus on blood pressure goals is lacking. The..

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Cerebral autoregulation monitoring using the cerebral oximetry index after neonatal cardiac surgery: A single-center retrospective cohort study

Abstract Objective To investigate whether  is impaired after neonatal cardiac surgery and whether changes in  metrics are associated with different  or the incidence of postoperative neurologic events. Methods This is a retrospective observational..

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Cerebral Autoregulation: A Target for Improving Neurological Outcomes in Extracorporeal Life Support

Abstract Despite improvements in survival after illnesses requiring extracorporeal life support, cerebral injury continues to hinder successful outcomes. Cerebral autoregulation (CA) is an innate protective mechanism that maintains constant cerebral..

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Determining Optimal Mean Arterial Blood Pressure Based on Cerebral Autoregulation in Children after Cardiac Surgery

Abstract To evaluate the feasibility of continuous determination of the optimal mean arterial blood pressure (opt-MAP) according to cerebral autoregulation and to describe the opt-MAP, the autoregulation limits, and the..

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Our initial experience of monitoring the autoregulation of cerebral blood flow during cardiopulmonary bypass

Abstract Background: Cerebral blood flow (CBF) is believed to be relatively constant within an upper and lower blood pressure limit. Different methods are available to monitor CBF autoregulation during surgery...

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Continuous Monitoring of Cerebral Autoregulation in Adults Supported by Extracorporeal Membrane Oxygenation

Abstract Background: Impaired cerebral autoregulation (CA) is one of several proposed mechanisms of acute brain injury in patients supported by extracorporeal membrane oxygenation (ECMO). The primary aim of this study..

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Continuous Monitoring of Cerebral Autoregulation in Adults Supported by Extracorporeal Membrane Oxygenation

Abstract Background: Impaired cerebral autoregulation (CA) is one of several proposed mechanisms of acute brain injury in patients supported by extracorporeal membrane oxygenation (ECMO). The primary aim of this study was..

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The incidence, risk factors and outcomes of impaired cerebral autoregulation in aortic arch surgery: a single-center, retrospective cohort study

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

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Real-Time Evaluation of Cerebral Autoregulation Based on Near-Infrared Spectroscopy to Predict Clinical Outcome after Bypass Surgery in Moyamoya Disease

Abstract Impaired cerebral autoregulation (CA) can cause negative outcomes in neurological conditions. Real-time CA monitoring can predict and thereby help prevent postoperative complications for neurosurgery patients, especially those suffering from..

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It All Circles Back to Cerebral Autoregulation: Understanding the Risk of Hypocapnia and Arterial Hypertension when initialing Pediatric Extracorporeal Membrane…

Abstract Clinicians caring for children with cardiopulmonary failure using extracorporeal membrane oxygenation (ECMO) are refining bedside clinical practices by focusing on minimizing morbidity associated with neurologic complications. Neurologic complications are the main drivers of survival..

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Association Between Disrupted Cerebral Autoregulation and Radiographic Neurologic Injury for Children on Extracorporeal Membrane Oxygenation: A Prospective Pilot Study

Abstract Validation of a real-time monitoring device to evaluate the risk or occurrence of neurologic injury while on extracorporeal membrane oxygenation (ECMO) may aid clinicians in prevention and treatment. Therefore,..

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Comparison of different metrics of cerebral autoregulation in association with major morbidity and mortality after cardiac surgery

Abstract Background Cardiac surgery studies have established the clinical relevance of personalised arterial blood pressure management based on cerebral autoregulation. However, variabilities exist in autoregulation evaluation. We compared the association..

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Cerebral oxygenation and autoregulation during rewarming on cardiopulmonary bypass

Abstract Background Rewarming on cardiopulmonary bypass (CPB) is associated with increased metabolic demands; however, it remains unclear whether cerebral autoregulation is affected during this phase. This RCT aims to describe..

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Impact of Arterial Carbon Dioxide and Oxygen Content on Cerebral Autoregulation Monitoring Among Children Supported by ECMO

Abstract Background Cerebral autoregulation (CA) impairment is associated with neurological complications among children supported by extracorporeal membrane oxygenation (ECMO). Severe variations of arterial CO2 (PaCO2) and O2 (PaO2) tension after ECMO onset..

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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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Effects of circulatory arrest and cardiopulmonary bypass on cerebral autoregulation in neonatal swine

Abstract Background Cerebral autoregulation mechanisms help maintain adequate cerebral blood flow (CBF) despite changes in cerebral perfusion pressure. Impairment of cerebral autoregulation, during and after cardiopulmonary bypass (CPB), may increase..

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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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Optimal blood pressure during cardiopulmonary bypass defined by cerebral autoregulation monitoring

Abstract Objectives We sought to define the lower and upper limits of cerebral blood flow autoregulation and the optimal blood pressure during cardiopulmonary bypass. We further sought to identify variables..

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Cerebral oxygenation during changes in vascular resistance and flow in patients on cardiopulmonary bypass – a physiological proof of concept…

Abstract Despite a rise in blood pressure, cerebral oxygenation decreases following phenylephrine administration, and we hypothesised that phenylephrine reduces cerebral oxygenation by activating cerebral α1 receptors. We studied patients on cardiopulmonary..

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Cerebral Autoregulation Monitoring with Ultrasound-Tagged Near-Infrared Spectroscopy in Cardiac Surgery Patients

Abstract BACKGROUND:  Individualizing mean arterial blood pressure (MAP) based on cerebral blood flow (CBF) autoregulation monitoring during cardiopulmonary bypass (CPB) holds promise as a strategy to optimize organ perfusion. The..

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A prospective, observational study of cerebrovascular autoregulation and its association with delirium following cardiac surgery

Summary This aim of this prospective observational cohort study was to evaluate any association between postoperatively impaired cerebrovascular autoregulation and the onset of delirium following cardiac surgery. Previous studies have..

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