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Carlson AP, Mayer AR, Cole C, van der Horn HJ, Marquez J, Stevenson TC, Shuttleworth CW. Cerebral autoregulation, spreading depolarization, and implications for targeted therapy in brain injury and ischemia. Rev Neurosci 2024; 35:651-678. [PMID: 38581271 PMCID: PMC11297425 DOI: 10.1515/revneuro-2024-0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 03/25/2024] [Indexed: 04/08/2024]
Abstract
Cerebral autoregulation is an intrinsic myogenic response of cerebral vasculature that allows for preservation of stable cerebral blood flow levels in response to changing systemic blood pressure. It is effective across a broad range of blood pressure levels through precapillary vasoconstriction and dilation. Autoregulation is difficult to directly measure and methods to indirectly ascertain cerebral autoregulation status inherently require certain assumptions. Patients with impaired cerebral autoregulation may be at risk of brain ischemia. One of the central mechanisms of ischemia in patients with metabolically compromised states is likely the triggering of spreading depolarization (SD) events and ultimately, terminal (or anoxic) depolarization. Cerebral autoregulation and SD are therefore linked when considering the risk of ischemia. In this scoping review, we will discuss the range of methods to measure cerebral autoregulation, their theoretical strengths and weaknesses, and the available clinical evidence to support their utility. We will then discuss the emerging link between impaired cerebral autoregulation and the occurrence of SD events. Such an approach offers the opportunity to better understand an individual patient's physiology and provide targeted treatments.
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Affiliation(s)
- Andrew P. Carlson
- Department of Neurosurgery, University of New Mexico School of Medicine, MSC10 5615, 1 UNM, Albuquerque, NM, 87131, USA
- Department of Neurosciences, University of New Mexico School of Medicine, 915 Camino de Salud NE, Albuquerque, NM, 87106, USA
| | - Andrew R. Mayer
- Mind Research Network, 1101 Yale, Blvd, NE, Albuquerque, NM, 87106, USA
| | - Chad Cole
- Department of Neurosurgery, University of New Mexico School of Medicine, MSC10 5615, 1 UNM, Albuquerque, NM, 87131, USA
| | | | - Joshua Marquez
- University of New Mexico School of Medicine, 915 Camino de Salud NE, Albuquerque, NM, 87106, USA
| | - Taylor C. Stevenson
- Department of Neurosurgery, University of New Mexico School of Medicine, MSC10 5615, 1 UNM, Albuquerque, NM, 87131, USA
| | - C. William Shuttleworth
- Department of Neurosciences, University of New Mexico School of Medicine, 915 Camino de Salud NE, Albuquerque, NM, 87106, USA
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2
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Totapally A, Fretz EA, Wolf MS. A narrative review of neuromonitoring modalities in critically ill children. Minerva Pediatr (Torino) 2024; 76:556-565. [PMID: 37462589 DOI: 10.23736/s2724-5276.23.07291-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Acute neurologic injury is common in critically ill children. Some conditions - such as traumatic brain injury, meningitis, and hypoxic-ischemic injury following cardiac arrest - require careful consideration of cerebral physiology. Specialized neuromonitoring techniques provide insight regarding patient-specific and disease-specific insight that can improve diagnostic accuracy, aid in targeting therapeutic interventions, and provide prognostic information. In this review, we will discuss recent innovations in invasive (e.g., intracranial pressure monitoring and related computed indices) and noninvasive (e.g., transcranial doppler, near-infrared spectroscopy) neuromonitoring techniques used in traumatic brain injury, central nervous system infections, and after cardiac arrest. We will discuss the pertinent physiological mechanisms interrogated by each technique and discuss available evidence for potential clinical application. We will also discuss the use of innovative neuromonitoring techniques to detect and manage neurologic complications in critically ill children with systemic illness, focusing on sepsis and cardiorespiratory failure requiring extracorporeal membrane oxygenation.
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Affiliation(s)
- Abhinav Totapally
- Division of Critical Care Medicine, Department of Pediatrics, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
| | - Emily A Fretz
- Division of Critical Care Medicine, Department of Pediatrics, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
| | - Michael S Wolf
- Division of Critical Care Medicine, Department of Pediatrics, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA -
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3
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Fedriga M, Martini S, Iodice FG, Sortica da Costa C, Pezzato S, Moscatelli A, Beqiri E, Czosnyka M, Smielewski P, Agrawal S. Cerebral autoregulation in paediatric and neonatal intensive care: A scoping review. J Cereb Blood Flow Metab 2024:271678X241261944. [PMID: 38867574 DOI: 10.1177/0271678x241261944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Deranged cerebral autoregulation (CA) is associated with worse outcome in adult brain injury. Strategies for monitoring CA and maintaining the brain at its 'best CA status' have been implemented, however, this approach has not yet developed for the paediatric population. This scoping review aims to find up-to-date evidence on CA assessment in children and neonates with a view to identify patient categories in which CA has been measured so far, CA monitoring methods and its relationship with clinical outcome if any. A literature search was conducted for studies published within 31st December 2022 in 3 bibliographic databases. Out of 494 papers screened, this review includes 135 studies. Our literature search reveals evidence for CA measurement in the paediatric population across different diagnostic categories and age groups. The techniques adopted, indices and thresholds used to assess and define CA are heterogeneous. We discuss the relevance of available evidence for CA assessment in the paediatric population. However, due to small number of studies and heterogeneity of methods used, there is no conclusive evidence to support universal adoption of CA monitoring, technique, and methodology. This calls for further work to understand the clinical impact of CA monitoring in paediatric and neonatal intensive care.
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Affiliation(s)
- Marta Fedriga
- Neonatal and Paediatric Intensive Care Unit, IRCCS Giannina Gaslini Institute, Genoa, Italy
| | - Silvia Martini
- Neonatal Intensive Care Unit, IRCCS AOUBO, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Francesca G Iodice
- Paediatric Cardiac Anaesthesia and Intensive Care Unit, IRCCS, Bambino Gesu' Hospital, Rome, Italy
| | | | - Stefano Pezzato
- Neonatal and Paediatric Intensive Care Unit, IRCCS Giannina Gaslini Institute, Genoa, Italy
| | - Andrea Moscatelli
- Neonatal and Paediatric Intensive Care Unit, IRCCS Giannina Gaslini Institute, Genoa, Italy
| | - Erta Beqiri
- Brain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, UK
| | - Marek Czosnyka
- Brain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, UK
| | - Peter Smielewski
- Brain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, UK
| | - Shruti Agrawal
- Department of Paediatric Intensive Care, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
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4
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Erklauer JC, Lai YC. The State of the Field of Pediatric Multimodality Neuromonitoring. Neurocrit Care 2024; 40:1160-1170. [PMID: 37864125 DOI: 10.1007/s12028-023-01858-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 09/08/2023] [Indexed: 10/22/2023]
Abstract
BACKGROUND The use of multimodal neuromonitoring in pediatrics is in its infancy relative to adult neurocritical care. Multimodal neuromonitoring encompasses the amalgamation of information from multiple individual neuromonitoring devices to gain a more comprehensive understanding of the condition of the brain. It allows for adaptation to the changing state of the brain throughout various stages of injury with potential to individualize and optimize therapies. METHODS Here we provide an overview of multimodal neuromonitoring in pediatric neurocritical care and its potential application in the future. RESULTS Multimodal neuromonitoring devices are key to the process of multimodal neuromonitoring, allowing for visualization of data trends over time and ideally improving the ability of clinicians to identify patterns and find meaning in the immense volume of data now encountered in the care of critically ill patients at the bedside. Clinical use in pediatrics requires more study to determine best practices and impact on patient outcomes. Potential uses include guidance for targets of physiological parameters in the setting of acute brain injury, neuroprotection for patients at high risk for brain injury, and neuroprognostication. Implementing multimodal neuromonitoring in pediatric patients involves interprofessional collaboration with the development of a simultaneous comprehensive program to support the use of multimodal neuromonitoring while maintaining the fundamental principles of the delivery of neurocritical care at the bedside. CONCLUSIONS The possible benefits of multimodal neuromonitoring are immense and have great potential to advance the field of pediatric neurocritical care and the health of critically ill children.
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Affiliation(s)
- Jennifer C Erklauer
- Divisions of Critical Care Medicine and Pediatric Neurology and Developmental Neurosciences, Department of Pediatrics, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA.
| | - Yi-Chen Lai
- Division of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
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Agrawal S, Abecasis F, Jalloh I. Neuromonitoring in Children with Traumatic Brain Injury. Neurocrit Care 2024; 40:147-158. [PMID: 37386341 PMCID: PMC10861621 DOI: 10.1007/s12028-023-01779-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 06/05/2023] [Indexed: 07/01/2023]
Abstract
Traumatic brain injury remains a major cause of mortality and morbidity in children across the world. Current management based on international guidelines focuses on a fixed therapeutic target of less than 20 mm Hg for managing intracranial pressure and 40-50 mm Hg for cerebral perfusion pressure across the pediatric age group. To improve outcome from this complex disease, it is essential to understand the pathophysiological mechanisms responsible for disease evolution by using different monitoring tools. In this narrative review, we discuss the neuromonitoring tools available for use to help guide management of severe traumatic brain injury in children and some of the techniques that can in future help with individualizing treatment targets based on advanced cerebral physiology monitoring.
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Affiliation(s)
- Shruti Agrawal
- Department of Paediatric Intensive Care, Cambridge University Hospitals National Health Service Foundation Trust, Level 3, Box 7, Addenbrookes Hospital Hills Road, Cambridge, UK.
- University of Cambridge, Cambridge, UK.
| | - Francisco Abecasis
- Paediatric Intensive Care Unit, Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal
| | - Ibrahim Jalloh
- University of Cambridge, Cambridge, UK
- Department of Neurosurgery, Cambridge University Hospitals National Health Service Foundation Trust, Cambridge, UK
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6
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Gritti P, Bonfanti M, Zangari R, Bonanomi E, Pellicioli I, Mandelli P, Longhi L, Rasulo FA, Bertuetti R, Farina A, Biroli F, Lorini FL. Evaluation and application of ultra-low-frequency pressure reactivity index in pediatric traumatic brain injury patients. Acta Neurochir (Wien) 2023; 165:865-874. [PMID: 36847979 DOI: 10.1007/s00701-023-05538-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 02/18/2023] [Indexed: 03/01/2023]
Abstract
PURPOSE While clinical practice suggests that knowing the cerebral autoregulation (CA) status of traumatic brain injury (TBI) patients is crucial in assessing the best treatment, evidence in pediatric TBI (pTBI) is limited. The pressure reactivity index (PRx) is a surrogate method for the continuous estimation of CA in adults; however, calculations require continuous, high-resolution monitoring data. We evaluate an ultra-low-frequency pressure reactivity index (UL-PRx), based on data sampled at ∼5-min periods, and test its association with 6-month mortality and unfavorable outcome in a cohort of pTBI patients. METHODS Data derived from pTBI patients (0-18 years) requiring intracranial pressure (ICP) monitoring were retrospectively collected and processed in MATLAB using an in-house algorithm. RESULTS Data on 47 pTBI patients were included. UL-PRx mean values, ICP, cerebral perfusion pressure (CPP), and derived indices showed significant association with 6-month mortality and unfavorable outcome. A value of UL-PRx of 0.30 was identified as the threshold to better discriminate both surviving vs deceased patients (AUC: 0.90), and favorable vs unfavorable outcomes (AUC: 0.70) at 6 months. At multivariate analysis, mean UL-PRx and % time with ICP > 20 mmHg, remained significantly associated with 6-month mortality and unfavorable outcome, even when adjusted for International Mission for Prognosis and Analysis of Clinical Trials in TBI (IMPACT)-Core variables. In six patients undergoing secondary decompressive craniectomy, no significant changes in UL-PRx were found after surgery. CONCLUSIONS UL-PRx is associated with a 6-month outcome even if adjusted for IMPACT-Core. Its application in pediatric intensive care unit could be useful to evaluate CA and offer possible prognostic and therapeutic implications in pTBI patients. CLINICALTRIALS GOV: NCT05043545, September 14, 2021, retrospectively registered.
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Affiliation(s)
- Paolo Gritti
- Department of Anesthesia and Critical Care Medicine, Papa Giovanni XXIII Hospital, Bergamo, Italy.
| | - Marco Bonfanti
- FROM Research Foundation, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - Rosalia Zangari
- FROM Research Foundation, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - Ezio Bonanomi
- Department of Anesthesia and Critical Care Medicine, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - Isabella Pellicioli
- Department of Anesthesia and Critical Care Medicine, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - Pietro Mandelli
- Department of Anesthesia and Critical Care Medicine, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - Luca Longhi
- Department of Anesthesia and Critical Care Medicine, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - Frank A Rasulo
- Anesthesiology, Intensive Care and Emergency Medicine, Department of Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Rita Bertuetti
- Anesthesiology, Intensive Care and Emergency Medicine, Department of Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Alessia Farina
- Department of Anesthesia and Critical Care Medicine, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - Francesco Biroli
- FROM Research Foundation, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - Ferdinando Luca Lorini
- Department of Anesthesia and Critical Care Medicine, Papa Giovanni XXIII Hospital, Bergamo, Italy
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7
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Early Cerebrovascular Autoregulation in Neonates with Congenital Heart Disease. CHILDREN 2022; 9:children9111686. [DOI: 10.3390/children9111686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/28/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022]
Abstract
Neonates with congenital heart disease (CHD) display delayed brain development, predisposing them to impaired cerebrovascular autoregulation (CAR) and ischemic brain injury. For this paper, we analyzed the percentage of time with impaired CAR (%time impaired CAR) during the first 72 h after birth, the relation with clinical factors, and survival in 57 neonates with CHD. The primary outcome was a correlation coefficient of cerebral oxygenation (rcSO2) and mean arterial blood pressure (MABP, mmHg) for two hours on a daily basis. The %time impaired CAR ranged from 9.3% of the studied time on day one to 4.6% on day three. Variables associated with more %time impaired CAR were the use of inotropes (day 1, B = 19.5, 95%CI = 10.6–28.3; day 3, B = 11.5, 95%CI = 7.1–16), lower MABP (day 1, B = −0.6, 95%CI = −1.2–0.0), and dextro-transposition of the great arteries (dTGA) (16.2%) compared with other CHD types (2.0–5.0%; day 1, p = 0.022). Survival was not an associated variable. To summarize, impaired CAR was found in CHD neonates in up to 9.3% of the studied time. More evidence is necessary to evaluate an association with inotropes, dTGA, %time impaired CAR, and long-term outcome, further in larger cohorts.
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8
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Brown KL, Agrawal S, Kirschen MP, Traube C, Topjian A, Pressler R, Hahn CD, Scholefield BR, Kanthimathinathan HK, Hoskote A, D'Arco F, Bembea M, Manning JC, Hunfeld M, Buysse C, Tasker RC. The brain in pediatric critical care: unique aspects of assessment, monitoring, investigations, and follow-up. Intensive Care Med 2022; 48:535-547. [PMID: 35445823 PMCID: PMC10082392 DOI: 10.1007/s00134-022-06683-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 03/15/2022] [Indexed: 02/05/2023]
Abstract
As survival after pediatric intensive care unit (PICU) admission has improved over recent years, a key focus now is the reduction of morbidities and optimization of quality of life for survivors. Neurologic disorders and direct brain injuries are the reason for 11-16% of admissions to PICU. In addition, many critically ill children are at heightened risk of brain injury and neurodevelopmental difficulties affecting later life, e.g., complex heart disease and premature birth. Hence, assessment, monitoring and protection of the brain, using fundamental principles of neurocritical care, are crucial to the practice of pediatric intensive care medicine. The assessment of brain function, necessary to direct appropriate care, is uniquely challenging amongst children admitted to the PICU. Challenges in assessment arise in children who are unstable, or pharmacologically sedated and muscle relaxed, or who have premorbid abnormality in development. Moreover, the heterogeneity of diseases and ages in PICU patients, means that high caliber evidence is harder to accrue than in adult practice, nonetheless, great progress has been made over recent years. In this 'state of the art' paper about critically ill children, we discuss (1) patient types at risk of brain injury, (2) new standardized clinical assessment tools for age-appropriate, clinical evaluation of brain function, (3) latest evidence related to cranial imaging, non-invasive and invasive monitoring of the brain, (4) the concept of childhood 'post intensive are syndrome' and approaches for neurodevelopmental follow-up. Better understanding of these concepts is vital for taking PICU survivorship to the next level.
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Affiliation(s)
- Kate L Brown
- Biomedical Research Centre, Great Ormond Street Hospital for Children, London, UK. .,Institute of Cardiovascular, Science University College London, London, UK.
| | - Shruti Agrawal
- Paediatric Intensive Care Unit Addenbrookes Hospital, Cambridge, UK
| | - Matthew P Kirschen
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, USA, Philadelphia.,University of Pennsylvania Perelman School of Medicine, Philadelphia, USA
| | - Chani Traube
- Department of Pediatrics, Division of Pediatric Critical Care Medicine, Weill Cornell Medical College, New York, USA
| | - Alexis Topjian
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, USA, Philadelphia.,University of Pennsylvania Perelman School of Medicine, Philadelphia, USA
| | - Ronit Pressler
- Biomedical Research Centre, Great Ormond Street Hospital for Children, London, UK.,Department of Clinical Neurophysiology, Great Ormond Street Hospital for Children, Great Ormond Street, London, UK.,University College London Institute of Child Health, London, UK
| | - Cecil D Hahn
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada.,Department of Paediatrics, University of Toronto, Toronto, Canada
| | - Barnaby R Scholefield
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK.,Paediatric Intensive Care Unit, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Hari Krishnan Kanthimathinathan
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK.,Paediatric Intensive Care Unit, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Aparna Hoskote
- Biomedical Research Centre, Great Ormond Street Hospital for Children, London, UK.,Institute of Cardiovascular, Science University College London, London, UK
| | - Felice D'Arco
- Biomedical Research Centre, Great Ormond Street Hospital for Children, London, UK.,University College London Institute of Child Health, London, UK
| | - Melania Bembea
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Joseph C Manning
- Nottingham Children's Hospital and Neonatology, Nottingham University Hospitals NHS Trust, Nottingham, UK.,Centre for Children and Young People Health Research, School of Health Sciences, University of Nottingham, Nottingham, UK
| | - Maayke Hunfeld
- Intensive Care and Department of Pediatric Surgery, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands.,Department of Pediatric Neurology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Corinne Buysse
- Intensive Care and Department of Pediatric Surgery, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Robert C Tasker
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Selwyn College, Cambridge University, Cambridge, UK
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