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Author Ronny Beer

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Invasive neuromonitoring and neurological intensive care unit management in life-threatening central nervous system infections.

Verena Rass, Mario Kofler, Ronny Beer, Raimund Helbok,

<h4>Purpose of review</h4>Patients with infectious diseases of the central nervous system (CNS) commonly require treatment in the intensive care unit (ICU). In a subset of patients with a life-threatening course, a more aggressive and invasive management is required. Treatment relies on the expertise of the intensivists as most recommendations are ... Read more >>

Curr Opin Neurol (Current opinion in neurology)
[2021, 34(3):447-455]

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Toxin-associated infectious diseases: tetanus, botulism and diphtheria.

Bettina Pfausler, Verena Rass, Raimund Helbok, Ronny Beer,

<h4>Purpose of review</h4>The incidence rates of the toxin-related infectious diseases, tetanus, diphtheria and botulism declined dramatically over the past decades mainly because of the implementation of immunization programs also in low-and-middle-income countries (LAMICs) and by improving hygiene conditions. But still, single cases occur, and they need fastest possible recognition and ... Read more >>

Curr Opin Neurol (Current opinion in neurology)
[2021, 34(3):432-438]

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Individualized blood pressure targets in the postoperative care of patients with intracerebral hemorrhage.

Anna Lindner, Verena Rass, Bogdan-Andrei Ianosi, Alois Josef Schiefecker, Mario Kofler, Max Gaasch, Alberto Addis, Paul Rhomberg, Bettina Pfausler, Ronny Beer, Erich Schmutzhard, Claudius Thomé, Raimund Helbok,

<h4>Objective</h4>Recent guidelines recommend targeting a systolic blood pressure (SBP) < 140 mm Hg in the early management of patients with spontaneous intracerebral hemorrhage (ICH). The optimal SBP targets for ICH patients after hematoma evacuation (HE) remain unclear. Here, the authors aimed to define the optimal SBP range based on multimodal ... Read more >>

J Neurosurg (Journal of neurosurgery)
[2021, :1-10]

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Neurological outcome and quality of life 3 months after COVID-19: A prospective observational cohort study.

Verena Rass, Ronny Beer, Alois Josef Schiefecker, Mario Kofler, Anna Lindner, Philipp Mahlknecht, Beatrice Heim, Victoria Limmert, Sabina Sahanic, Alex Pizzini, Thomas Sonnweber, Ivan Tancevski, Christoph Scherfler, Laura Zamarian, Rosa Bellmann-Weiler, Günter Weiss, Atbin Djamshidian, Stefan Kiechl, Klaus Seppi, Judith Loeffler-Ragg, Bettina Pfausler, Raimund Helbok,

<h4>Background and purpose</h4>To assess neurological manifestations and health-related quality of life (QoL) 3 months after COVID-19.<h4>Methods</h4>In this prospective, multicenter, observational cohort study we systematically evaluated neurological signs and diseases by detailed neurological examination and a predefined test battery assessing smelling disorders (16-item Sniffin Sticks test), cognitive deficits (Montreal Cognitive Assessment), QoL ... Read more >>

Eur J Neurol (European journal of neurology)
[2021, :]

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Persistent postconcussive symptoms in children and adolescents with mild traumatic brain injury receiving initial head computed tomography.

Lennart Riemann, Daphne C Voormolen, Katrin Rauen, Klaus Zweckberger, Andreas Unterberg, Alexander Younsi, ,

<h4>Objective</h4>The aim of this paper was to evaluate the prevalence of postconcussive symptoms and their relation to health-related quality of life (HRQOL) in pediatric and adolescent patients with mild traumatic brain injury (mTBI) who received head CT imaging during initial assessment.<h4>Methods</h4>Patients aged between 5 and 21 years with mTBI (Glasgow ... Read more >>

J Neurosurg Pediatr (Journal of neurosurgery. Pediatrics)
[2021, :1-10]

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Use and impact of high intensity treatments in patients with traumatic brain injury across Europe: a CENTER-TBI analysis.

Jilske A Huijben, Abhishek Dixit, Nino Stocchetti, Andrew I R Maas, Hester F Lingsma, Mathieu van der Jagt, David Nelson, Giuseppe Citerio, Lindsay Wilson, David K Menon, Ari Ercole, ,

<h4>Purpose</h4>To study variation in, and clinical impact of high Therapy Intensity Level (TIL) treatments for elevated intracranial pressure (ICP) in patients with traumatic brain injury (TBI) across European Intensive Care Units (ICUs).<h4>Methods</h4>We studied high TIL treatments (metabolic suppression, hypothermia (< 35 °C), intensive hyperventilation (PaCO<sub>2</sub> < 4 kPa), and secondary decompressive craniectomy) in patients receiving ... Read more >>

Crit Care (Critical care (London, England))
[2021, 25(1):78]

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Hyperactive delirium in patients after non-traumatic subarachnoid hemorrhage.

Fabian Reimann, Thomas Rinner, Anna Lindner, Mario Kofler, Bogdan-Andrei Ianosi, Alois Josef Schiefecker, Ronny Beer, Erich Schmutzhard, Bettina Pfausler, Raimund Helbok, Verena Rass,

<h4>Purpose</h4>Hyperactive delirium is common after subarachnoid hemorrhage (SAH). We aimed to identify risk factors for delirium and to evaluate its impact on outcome.<h4>Methods</h4>We collected daily Richmond Agitation Sedation Scale (RASS) and Intensive Care Delirium Screening Checklist (ICDSC) scores in 276 SAH patients. Hyperactive delirium was defined as ICDSC ≥4 when ... Read more >>

J Crit Care (Journal of critical care)
[2021, 64:45-52]

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Missing Data in Prediction Research: A Five-Step Approach for Multiple Imputation, Illustrated in the CENTER-TBI Study.

Benjamin Yaël Gravesteijn, Charlie Aletta Sewalt, Esmee Venema, Daan Nieboer, Ewout W Steyerberg, ,

In medical research, missing data is common. In acute diseases, such as traumatic brain injury (TBI), even well-conducted prospective studies may suffer from missing data in baseline characteristics and outcomes. Statistical models may simply drop patients with any missing values, potentially leaving a selected subset of the original cohort. Imputation ... Read more >>

J Neurotrauma (Journal of neurotrauma)
[2021, :]

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Correction to: Frequency of fatigue and its changes in the first 6 months after traumatic brain injury: results from the CENTER-TBI study.

Nada Andelic, Cecilie Røe, Cathrine Brunborg, Marina Zeldovich, Marianne Løvstad, Daniel Løke, Ida M Borgen, Daphne C Voormolen, Emilie I Howe, Marit V Forslund, Hilde M Dahl, Nicole von Steinbuechel, ,

J Neurol (Journal of neurology)
[2021, 268(1):74-76]

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Acute Kidney Injury in Traumatic Brain Injury Patients: Results From the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury Study.

Chiara Robba, Erika Banzato, Paola Rebora, Carolina Iaquaniello, Chao-Yuan Huang, Eveline J A Wiegers, Geert Meyfroidt, Giuseppe Citerio, ,

<h4>Objectives</h4>Acute kidney injury is frequent in polytrauma patients, and it is associated with increased mortality and extended hospital length of stay. However, the specific prevalence of acute kidney injury after traumatic brain injury is less recognized. The present study aims to describe the occurrence rate, risk factors, timing, and association ... Read more >>

Crit Care Med (Critical care medicine)
[2021, 49(1):112-126]

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Systemic Markers of Injury and Injury Response Are Not Associated with Impaired Cerebrovascular Reactivity in Adult Traumatic Brain Injury: A Collaborative European Neurotrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) Study.

Frederick A Zeiler, François Mathieu, Miguel Monteiro, Ben Glocker, Ari Ercole, Manuel Cabeleira, Nino Stocchetti, Peter Smielewski, Marek Czosnyka, Virginia Newcombe, David K Menon, ,

The role of extra-cranial injury burden and systemic injury response on cerebrovascular response in traumatic brain injury (TBI) is poorly documented. This study preliminarily assesses the association between admission features of extra-cranial injury burden on cerebrovascular reactivity. Using the Collaborative European Neurotrauma Effectiveness Research in TBI High-Resolution ICU (HR ICU) ... Read more >>

J Neurotrauma (Journal of neurotrauma)
[2021, 38(7):870-878]

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Outcome Prediction after Moderate and Severe Traumatic Brain Injury: External Validation of Two Established Prognostic Models in 1742 European Patients.

Simone A Dijkland, Isabel R A Retel Helmrich, Daan Nieboer, Mathieu van der Jagt, Diederik W J Dippel, David K Menon, Nino Stocchetti, Andrew I R Maas, Hester F Lingsma, Ewout W Steyerberg, ,

The International Mission on Prognosis and Analysis of Clinical Trials in Traumatic Brain Injury (IMPACT) and Corticoid Randomisation After Significant Head injury (CRASH) prognostic models predict functional outcome after moderate and severe traumatic brain injury (TBI). We aimed to assess their performance in a contemporary cohort of patients across Europe. ... Read more >>

J Neurotrauma (Journal of neurotrauma)
[2020, :]

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Global Characterisation of Coagulopathy in Isolated Traumatic Brain Injury (iTBI): A CENTER-TBI Analysis.

Julia K Böhm, Helge Güting, Sophie Thorn, Nadine Schäfer, Victoria Rambach, Herbert Schöchl, Oliver Grottke, Rolf Rossaint, Simon Stanworth, Nicola Curry, Rolf Lefering, Marc Maegele, ,

<h4>Background</h4>Trauma-induced coagulopathy in patients with traumatic brain injury (TBI) is associated with high rates of complications, unfavourable outcomes and mortality. The mechanism of the development of TBI-associated coagulopathy is poorly understood.<h4>Methods</h4>This analysis, embedded in the prospective, multi-centred, observational Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study, aimed ... Read more >>

Neurocrit Care (Neurocritical care)
[2020, :]

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Neurological Outcome and Quality of Life Three Months after COVID-19: A Prospective Observational Cohort Study

Verena Rass, Ronny Beer, Alois Josef Schiefecker, Mario Kofler, Anna Lindner, Philipp Mahlknecht, Beatrice Heim, Victoria Limmert, Sabina Sahanic, Alex Pizzini, Thomas Sonnweber, Ivan Tancevski, Judith Loeffler-Ragg, Christoph Scherfler, Laura Zamarian, Rosa Bellman-Weiler, Günter Weiss, Atbin Djamshidian, Stefan Kiechl, Bettina Pfausler, Klaus Seppi, Raimund Helbok,

BACKGROUND: Increasing evidence suggests the involvement of the central and peripheral nervous system in patients with coronavirus disease 2019 (COVID-19). Little is known about neurological outcomes and quality of life (QoL) after recovery from acute infection.<br><br>METHODS: In this prospective, multicentre, observational cohort study we systematically evaluated neurological signs and diseases ... Read more >>

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Understanding the relationship between cognitive performance and function in daily life after traumatic brain injury.

Lindsay Wilson, Lindsay Horton, Kevin Kunzmann, Barbara J Sahakian, Virginia Fj Newcombe, Emmanuel A Stamatakis, Nicole von Steinbuechel, Katrin Cunitz, Amra Covic, Andrew Maas, Dominique Van Praag, David Menon, ,

<h4>Objective</h4>Cognitive impairment is a key cause of disability after traumatic brain injury (TBI) but relationships with overall functioning in daily life are often modest. The aim is to examine cognition at different levels of function and identify domains associated with disability.<h4>Methods</h4>1554 patients with mild-to-severe TBI were assessed at 6 months ... Read more >>

J Neurol Neurosurg Psychiatry (Journal of neurology, neurosurgery, and psychiatry)
[2020, :]

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Brain Exposure to Piperacillin in Acute Hemorrhagic Stroke Patients Assessed by Cerebral Microdialysis and Population Pharmacokinetics.

Sami Ullah, Ronny Beer, Uwe Fuhr, Max Taubert, Markus Zeitlinger, Alexander Kratzer, Christoph Dorn, Usman Arshad, Mario Kofler, Raimund Helbok,

<h4>Background</h4>The broad antibacterial spectrum of piperacillin/tazobactam makes the combination suitable for the treatment of nosocomial bacterial central nervous system (CNS) infections. As limited data are available regarding piperacillin CNS exposure in patients without or with low-grade inflammation, a clinical study was conducted (1) to quantify CNS exposure of piperacillin by ... Read more >>

Neurocrit Care (Neurocritical care)
[2020, 33(3):740-748]

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Myasthenic crisis following SARS-CoV-2 infection and delayed virus clearance in a patient treated with rituximab: clinical course and 6-month follow-up.

Julia V Wanschitz, Manuela Kaml, Bettina Pfausler, Raimund Helbok, Sophie Wildner, Gerlig Widmann, Sabina Sahanic, Florian Deisenhammer, Wolfgang N Löscher, Markus Reindl, Judith Löffler-Ragg, Ronny Beer,

J Neurol (Journal of neurology)
[2020, :]

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The Effect of Temperature Increases on Brain Tissue Oxygen Tension in Patients with Traumatic Brain Injury: A Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury Substudy.

Verena Rass, Lukas Huber, Bogdan-Andrei Ianosi, Mario Kofler, Anna Lindner, Edoardo Picetti, Fabrizio Ortolano, Ronny Beer, Sandra Rossi, Peter Smielewski, Nino Stocchetti, Raimund Helbok, ,

Fever may aggravate secondary brain injury after traumatic brain injury (TBI). The aim of this study was to identify episodes of temperature increases through visual plot analysis and algorithm supported detection, and to describe associated patterns of changes in on brain tissue oxygen tension (P<sub>bt</sub>O<sub>2</sub>). Data derive from the high-resolution ... Read more >>

Ther Hypothermia Temp Manag (Therapeutic hypothermia and temperature management)
[2020, :]

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Early alterations in heart rate are associated with poor outcome in patients with intracerebral hemorrhage.

Verena Rass, Anna Lindner, Bogdan-Andrei Ianosi, Alois Josef Schiefecker, Sebastian Loveys, Mario Kofler, Sofia Rass, Bettina Pfausler, Ronny Beer, Erich Schmutzhard, Raimund Helbok,

<h4>Purpose</h4>Cardiac complications are common after spontaneous intracerebral hemorrhage (ICH). In this study we intended to investigate factors associated with higher alterations in heart rate and their impact on outcome.<h4>Methods</h4>Eighty-eight ICH patients were included. A simplified approach to calculate heart rate variability (HR<sub>SD</sub>) in analogy to systolic blood pressure variability (SBP<sub>SD</sub>) ... Read more >>

J Crit Care (Journal of critical care)
[2021, 61:199-206]

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Prediction of Global Functional Outcome and Post-Concussive Symptoms after Mild Traumatic Brain Injury: External Validation of Prognostic Models in the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) Study.

Ana Mikolić, Suzanne Polinder, Ewout W Steyerberg, Isabel R A Retel Helmrich, Joseph T Giacino, Andrew I R Maas, Joukje van der Naalt, Daphne C Voormolen, Nicole von Steinbüchel, Lindsay Wilson, Hester F Lingsma, David van Klaveren, ,

The majority of traumatic brain injuries (TBIs) are categorized as mild, according to a baseline Glasgow Coma Scale (GCS) score of 13-15. Prognostic models that were developed to predict functional outcome and persistent post-concussive symptoms (PPCS) after mild TBI have rarely been externally validated. We aimed to externally validate models ... Read more >>

J Neurotrauma (Journal of neurotrauma)
[2021, 38(2):196-209]

Cited: 1 time

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Differences between Men and Women in Treatment and Outcome after Traumatic Brain Injury.

Ana Mikolić, David van Klaveren, Joost Oude Groeniger, Eveline J A Wiegers, Hester F Lingsma, Marina Zeldovich, Nicole von Steinbüchel, Andrew I R Maas, Jeanine E Roeters van Lennep, Suzanne Polinder, ,

Traumatic brain injury (TBI) is a significant cause of disability, but little is known about sex and gender differences after TBI. We aimed to analyze the association between sex/gender, and the broad range of care pathways, treatment characteristics, and outcomes following mild and moderate/severe TBI. We performed mixed-effects regression analyses ... Read more >>

J Neurotrauma (Journal of neurotrauma)
[2021, 38(2):235-251]

Cited: 1 time

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Prediction model for intracranial hypertension demonstrates robust performance during external validation on the CENTER-TBI dataset.

Giorgia Carra, Fabian Güiza, Bart Depreitere, Geert Meyfroidt, ,

Intensive Care Med (Intensive care medicine)
[2021, 47(1):124-126]

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Muscle involvement in SARS-CoV-2 infection.

L Pitscheider, M Karolyi, F R Burkert, R Helbok, J V Wanschitz, C Horlings, E Pawelka, S Omid, M Traugott, T Seitz, A Zoufaly, E Lindeck-Pozza, E Wöll, R Beer, S Seiwald, R Bellmann-Weiler, H Hegen, W N Löscher,

<h4>Background and purpose</h4>Since the outbreak of the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic, several reports indicated neurological involvement in COVID-19 disease. Muscle involvement has also been reported as evidenced by creatine kinase (CK) elevations and reports of myalgia.<h4>Methods</h4>Creatine kinase, markers of inflammation, pre-existing diseases and statin use were extracted ... Read more >>

Eur J Neurol (European journal of neurology)
[2020, :]

Cited: 5 times

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Association between Physiological Signal Complexity and Outcomes in Moderate and Severe Traumatic Brain Injury: A CENTER-TBI Exploratory Analysis of Multi-Scale Entropy.

Frederick A Zeiler, Ari Ercole, Michal M Placek, Peter J Hutchinson, Nino Stocchetti, Marek Czosnyka, Peter Smielewski, ,

In traumatic brain injury (TBI), preliminary retrospective work on signal entropy suggests an association with global outcome. The goal of this study was to provide multi-center validation of the association between multi-scale entropy (MSE) of cardiovascular and cerebral physiological signals, with six-month outcome. Using the Collaborative European NeuroTrauma Effectiveness Research ... Read more >>

J Neurotrauma (Journal of neurotrauma)
[2021, 38(2):272-282]

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The Importance of PbtO2 Probe Location for Data Interpretation in Patients with Intracerebral Hemorrhage.

Anna Lindner, Verena Rass, Bogdan-Andrei Ianosi, Alois J Schiefecker, Mario Kofler, Paul Rhomberg, Bettina Pfausler, Ronny Beer, Erich Schmutzhard, Claudius Thomé, Raimund Helbok,

<h4>Background/objective</h4>Monitoring of brain tissue oxygen tension (P<sub>bt</sub>O<sub>2</sub>) provides insight into brain pathophysiology after intracerebral hemorrhage (ICH). Integration of probe location is recommended to optimize data interpretation. So far, little is known about the importance of P<sub>bt</sub>O<sub>2</sub> catheter location in ICH patients.<h4>Methods</h4>We prospectively included 40 ICH patients after hematoma evacuation (HE) ... Read more >>

Neurocrit Care (Neurocritical care)
[2020, :]

Cited: 0 times

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