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Eleveld N, Harmsen M, Elting JWJ, Maurits NM. Haemosync: A synchronisation algorithm for multimodal haemodynamic signals. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2024; 254:108298. [PMID: 38936154 DOI: 10.1016/j.cmpb.2024.108298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 05/30/2024] [Accepted: 06/17/2024] [Indexed: 06/29/2024]
Abstract
BACKGROUND Synchronous acquisition of haemodynamic signals is crucial for their multimodal analysis, such as dynamic cerebral autoregulation (DCA) analysis of arterial blood pressure (ABP) and transcranial Doppler (TCD)-derived cerebral blood velocity (CBv). Several technical problems can, however, lead to (varying) time-shifts between the different signals. These can be difficult to recognise and can strongly influence the multimodal analysis results. METHODS We have developed a multistep, cross-correlation-based time-shift detection and synchronisation algorithm for multimodal pulsatile haemodynamic signals. We have developed the algorithm using ABP and CBv measurements from a dataset that contained combinations of several time-shifts. We validated the algorithm on an external dataset with time-shifts. We additionally quantitatively validated the algorithm's performance on a dataset with artificially added time-shifts, consisting of sample clock differences ranging from -0.2 to 0.2 s/min and sudden time-shifts between -4 and 4 s. The influence of superimposed noise and variation in waveform morphology on the time-shift estimation was quantified, and their influence on DCA-indices was determined. RESULTS The instantaneous median absolute error (MedAE) between the artificially added time-shifts and the estimated time-shifts was 12 ms (median, IQR 12-12, range 11-14 ms) for drifts between -0.1 and 0.1 s/min and sudden time-shifts between -4 and 4 s. For drifts above 0.1 s/min, MedAE was higher (median 753, IQR 19 - 766, range 13 - 772 ms). When a certainty threshold was included (peak cross-correlation > 0.9), MedAE for all drifts-shift combinations decreased to 12 ms, with smaller variability (IQR 12 - 13, range 8 - 22 ms, p < 0.001). The time-shift estimation is robust to noise, as the MedAE was similar for superimposed white noise with variance equal to the signal variance. After time-shift correction, DCA-indices were similar to the original, non-time-shifted signals. Phase shift differed by 0.17° (median, IQR 0.13-0.2°, range 0.0038-1.1°) and 0.54° (median, IQR 0.23-1.7°, range 0.0088-5.6°) for the very low frequency and low frequency ranges, respectively. DISCUSSION This algorithm allows visually interpretable detection and accurate correction of time-shifts between pulsatile haemodynamic signals (ABP and CBv).
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Affiliation(s)
- Nick Eleveld
- University of Groningen, University Medical Center Groningen, Department of Neurology, 9713 GZ Groningen, the Netherlands.
| | - Marije Harmsen
- University of Groningen, University Medical Center Groningen, Department of Neurology, 9713 GZ Groningen, the Netherlands
| | - Jan Willem J Elting
- University of Groningen, University Medical Center Groningen, Department of Neurology, 9713 GZ Groningen, the Netherlands
| | - Natasha M Maurits
- University of Groningen, University Medical Center Groningen, Department of Neurology, 9713 GZ Groningen, the Netherlands
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Srichawla BS. Future of neurocritical care: Integrating neurophysics, multimodal monitoring, and machine learning. World J Crit Care Med 2024; 13:91397. [PMID: 38855276 PMCID: PMC11155497 DOI: 10.5492/wjccm.v13.i2.91397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/27/2024] [Accepted: 03/06/2024] [Indexed: 06/03/2024] Open
Abstract
Multimodal monitoring (MMM) in the intensive care unit (ICU) has become increasingly sophisticated with the integration of neurophysical principles. However, the challenge remains to select and interpret the most appropriate combination of neuromonitoring modalities to optimize patient outcomes. This manuscript reviewed current neuromonitoring tools, focusing on intracranial pressure, cerebral electrical activity, metabolism, and invasive and noninvasive autoregulation monitoring. In addition, the integration of advanced machine learning and data science tools within the ICU were discussed. Invasive monitoring includes analysis of intracranial pressure waveforms, jugular venous oximetry, monitoring of brain tissue oxygenation, thermal diffusion flowmetry, electrocorticography, depth electroencephalography, and cerebral microdialysis. Noninvasive measures include transcranial Doppler, tympanic membrane displacement, near-infrared spectroscopy, optic nerve sheath diameter, positron emission tomography, and systemic hemodynamic monitoring including heart rate variability analysis. The neurophysical basis and clinical relevance of each method within the ICU setting were examined. Machine learning algorithms have shown promise by helping to analyze and interpret data in real time from continuous MMM tools, helping clinicians make more accurate and timely decisions. These algorithms can integrate diverse data streams to generate predictive models for patient outcomes and optimize treatment strategies. MMM, grounded in neurophysics, offers a more nuanced understanding of cerebral physiology and disease in the ICU. Although each modality has its strengths and limitations, its integrated use, especially in combination with machine learning algorithms, can offer invaluable information for individualized patient care.
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Affiliation(s)
- Bahadar S Srichawla
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA 01655, United States
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Park S, Beqiri E, Smielewski P, Aries M. Inaugural State of the Union: Continuous Cerebral Autoregulation Monitoring in the Clinical Practice of Neurocritical Care and Anesthesia. Neurocrit Care 2024; 40:855-864. [PMID: 37853235 DOI: 10.1007/s12028-023-01860-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/07/2023] [Indexed: 10/20/2023]
Abstract
How continuous cerebral autoregulation (CCA) knowledge should be optimally gained and interpreted is still an active area of research and refinement. We now experience a unique situation of having indices clinically available before definitive evidence of benefit or practice guidelines, in a moment when high rates of institutional variability exist both in the application of monitoring as well as in monitoring-guided treatments. Responses from 47 international clinicians, experts in this field, were collected with polling and discussion of the results. The clinical use of CCA in critical illness was not universal among experts, with 34% not using it. Of those who use a CCA index in clinical practice, 64% use intracranial pressure-based Pressure Reactivity index (PRx). There seems to exist a considerable trust in the physiologic plausibility of CCA to guide individual arterial blood pressure and cerebral perfusion pressure therapy and provide benefit, regardless of the difficulty of proving this. A total of 59% feel the need for phase II and III prospective studies but would continue to use CCA information in their practice even if randomized controlled trials (RCTs) did not show clear clinical benefit. There was nearly universal interest to participate in an RCT, with agreement that the research community must together determine end points and interventions to reduce wasted effort and time, and that investigations should include the following: the most appropriate way of inclusion of CCA into the clinical workflow; whether CCA-guided interventions should be prophylactic, proactive; or reactive; and whether a CCA-centric (unimodal) or a multimodal monitoring-integrated tiered therapy approach should be adopted. Pediatric and neonatal populations were highlighted as having urgent need and even more plausibility than adults. On the whole, the initiative was enthusiastically embraced by the experts, with the general feeling that a strong push should be now made by the community to convert the plausible benefits of CCA monitoring, already implemented in some centers, into a more standardized and RCT-validated clinical reality.
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Affiliation(s)
- Soojin Park
- Departments of Neurology and Biomedical Informatics, Columbia University Vagelos College of Physicians and Surgeons, NewYork-Presbyterian Hospital, New York, NY, USA
| | - Erta Beqiri
- Brain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Peter Smielewski
- Brain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK.
| | - Marcel Aries
- School for Mental Health and Neuroscience, University Maastricht, Maastricht, The Netherlands
- Department of Intensive Care Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
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Mani RK, Bhatnagar S, Butola S, Gursahani R, Mehta D, Simha S, Divatia JV, Kumar A, Iyer SK, Deodhar J, Bhat RS, Salins N, Thota RS, Mathur R, Iyer RK, Gupta S, Kulkarni P, Murugan S, Nasa P, Myatra SN. Indian Society of Critical Care Medicine and Indian Association of Palliative Care Expert Consensus and Position Statements for End-of-life and Palliative Care in the Intensive Care Unit. Indian J Crit Care Med 2024; 28:200-250. [PMID: 38477011 PMCID: PMC10926026 DOI: 10.5005/jp-journals-10071-24661] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
End-of-life care (EOLC) exemplifies the joint mission of intensive and palliative care (PC) in their human-centeredness. The explosion of technological advances in medicine must be balanced with the culture of holistic care. Inevitably, it brings together the science and the art of medicine in their full expression. High-quality EOLC in the ICU is grounded in evidence, ethical principles, and professionalism within the framework of the Law. Expert professional statements over the last two decades in India were developed while the law was evolving. Recent landmark Supreme Court judgments have necessitated a review of the clinical pathway for EOLC outlined in the previous statements. Much empirical and interventional evidence has accumulated since the position statement in 2014. This iteration of the joint Indian Society of Critical Care Medicine-Indian Association of Palliative Care (ISCCM-IAPC) Position Statement for EOLC combines contemporary evidence, ethics, and law for decision support by the bedside in Indian ICUs. How to cite this article Mani RK, Bhatnagar S, Butola S, Gursahani R, Mehta D, Simha S, et al. Indian Society of Critical Care Medicine and Indian Association of Palliative Care Expert Consensus and Position Statements for End-of-life and Palliative Care in the Intensive Care Unit. Indian J Crit Care Med 2024;28(3):200-250.
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Affiliation(s)
- Raj K Mani
- Department of Critical Care and Pulmonology, Yashoda Super Specialty Hospital, Ghaziabad, Kaushambi, Uttar Pradesh, India
| | - Sushma Bhatnagar
- Department of Onco-Anaesthesia and Palliative Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Savita Butola
- Department of Palliative Care, Border Security Force Sector Hospital, Panisagar, Tripura, India
| | - Roop Gursahani
- Department of Neurology, P. D. Hinduja National Hospital & Medical Research Centre, Mumbai, Maharashtra, India
| | - Dhvani Mehta
- Division of Health, Vidhi Centre for Legal Policy, New Delhi, India
| | - Srinagesh Simha
- Department of Palliative Care, Karunashraya, Bengaluru, Karnataka, India
| | - Jigeeshu V Divatia
- Department of Anaesthesia, Critical Care, and Pain, Tata Memorial Hospital, Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Arun Kumar
- Department of Intensive Care, Medical Intensive Care Unit, Fortis Healthcare Ltd, Mohali, Punjab, India
| | - Shiva K Iyer
- Department of Critical Care, Bharati Vidyapeeth (Deemed to be University) Medical College, Pune, Maharashtra, India
| | - Jayita Deodhar
- Department Palliative Care, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Rajani S Bhat
- Department of Interventional Pulmonology and Palliative Medicine, SPARSH Hospitals, Bengaluru, Karnataka, India
| | - Naveen Salins
- Department of Palliative Medicine and Supportive Care, Kasturba Medical College Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Raghu S Thota
- Department Palliative Care, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Roli Mathur
- Department of Bioethics, Indian Council of Medical Research, Bengaluru, Karnataka, India
| | - Rajam K Iyer
- Department of Palliative Care, Bhatia Hospital; P. D. Hinduja National Hospital & Medical Research Centre, Mumbai, Maharashtra, India
| | - Sudeep Gupta
- Department of Medical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | | | - Sangeetha Murugan
- Department of Education and Research, Karunashraya, Bengaluru, Karnataka, India
| | - Prashant Nasa
- Department of Critical Care Medicine, NMC Specialty Hospital, Dubai, United Arab Emirates
| | - Sheila N Myatra
- Department of Anesthesiology, Critical Care and Pain, Tata Memorial Hospital, Homi Bhabha National Institute, Mumbai, India
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Ritter K, Somnuke P, Hu L, Griemert EV, Schäfer MKE. Current state of neuroprotective therapy using antibiotics in human traumatic brain injury and animal models. BMC Neurosci 2024; 25:10. [PMID: 38424488 PMCID: PMC10905838 DOI: 10.1186/s12868-024-00851-6] [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: 09/25/2023] [Accepted: 02/02/2024] [Indexed: 03/02/2024] Open
Abstract
TBI is a leading cause of death and disability in young people and older adults worldwide. There is no gold standard treatment for TBI besides surgical interventions and symptomatic relief. Post-injury infections, such as lower respiratory tract and surgical site infections or meningitis are frequent complications following TBI. Whether the use of preventive and/or symptomatic antibiotic therapy improves patient mortality and outcome is an ongoing matter of debate. In contrast, results from animal models of TBI suggest translational perspectives and support the hypothesis that antibiotics, independent of their anti-microbial activity, alleviate secondary injury and improve neurological outcomes. These beneficial effects were largely attributed to the inhibition of neuroinflammation and neuronal cell death. In this review, we briefly outline current treatment options, including antibiotic therapy, for patients with TBI. We then summarize the therapeutic effects of the most commonly tested antibiotics in TBI animal models, highlight studies identifying molecular targets of antibiotics, and discuss similarities and differences in their mechanistic modes of action.
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Affiliation(s)
- Katharina Ritter
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany
| | - Pawit Somnuke
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Lingjiao Hu
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany
- Department of Gastroenterology, Nanxishan Hospital of Guangxi Zhuang Autonomous Region, Guilin, China
| | - Eva-Verena Griemert
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany
| | - Michael K E Schäfer
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany.
- Focus Program Translational Neurosciences (FTN, Johannes Gutenberg-University Mainz, Mainz, Germany.
- Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg- University Mainz, Mainz, Germany.
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Battaglini D, Bogossian EG, Anania P, Premraj L, Cho SM, Taccone FS, Sekhon M, Robba C. Monitoring of Brain Tissue Oxygen Tension in Cardiac Arrest: a Translational Systematic Review from Experimental to Clinical Evidence. Neurocrit Care 2024; 40:349-363. [PMID: 37081276 DOI: 10.1007/s12028-023-01721-5] [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: 12/05/2022] [Accepted: 03/24/2023] [Indexed: 04/22/2023]
Abstract
BACKGROUND Cardiac arrest (CA) is a sudden event that is often characterized by hypoxic-ischemic brain injury (HIBI), leading to significant mortality and long-term disability. Brain tissue oxygenation (PbtO2) is an invasive tool for monitoring brain oxygen tension, but it is not routinely used in patients with CA because of the invasiveness and the absence of high-quality data on its effect on outcome. We conducted a systematic review of experimental and clinical evidence to understand the role of PbtO2 in monitoring brain oxygenation in HIBI after CA and the effect of targeted PbtO2 therapy on outcomes. METHODS The search was conducted using four search engines (PubMed, Scopus, Embase, and Cochrane), using the Boolean operator to combine mesh terms such as PbtO2, CA, and HIBI. RESULTS Among 1,077 records, 22 studies were included (16 experimental studies and six clinical studies). In experimental studies, PbtO2 was mainly adopted to assess the impact of gas exchanges, drugs, or systemic maneuvers on brain oxygenation. In human studies, PbtO2 was rarely used to monitor the brain oxygen tension in patients with CA and HIBI. PbtO2 values had no clear association with patients' outcomes, but in the experimental studies, brain tissue hypoxia was associated with increased inflammation and neuronal damage. CONCLUSIONS Further studies are needed to validate the effect and the threshold of PbtO2 associated with outcome in patients with CA, as well as to understand the physiological mechanisms influencing PbtO2 induced by gas exchanges, drug administration, and changes in body positioning after CA.
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Affiliation(s)
- Denise Battaglini
- Anesthesiology and Critical Care, San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
- Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Elisa Gouvea Bogossian
- Department of Intensive Care, Hospital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Pasquale Anania
- Department of Neurosurgery, San Martino Policlinico Hospital, IRCCS for Oncology and Neuroscience, Genoa, Italy.
| | - Lavienraj Premraj
- Griffith University School of Medicine, Gold Coast, QLD, Australia
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Sung-Min Cho
- Departments of Neurology, Surgery, and Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Fabio Silvio Taccone
- Department of Intensive Care, Hospital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Mypinder Sekhon
- Division of Critical Care Medicine, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Chiara Robba
- Anesthesiology and Critical Care, San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
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Beqiri E, Czosnyka M, Placek MM, Cucciolini G, Motroni V, Smith CA, Hutchinson P, Smielewski P. Red solid line: Patterns of terminal loss of cerebrovascular reactivity at the bedside. BRAIN & SPINE 2024; 4:102760. [PMID: 38510604 PMCID: PMC10951796 DOI: 10.1016/j.bas.2024.102760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 01/17/2024] [Accepted: 01/21/2024] [Indexed: 03/22/2024]
Abstract
Introduction Continuous monitoring of the pressure reactivity index (PRx) provides an estimation of dynamic cerebral autoregulation (CA) at the bedside in traumatic brain injury (TBI) patients. Visualising the time-trend of PRx with a risk bar chart in ICM + software at the bedside allows for better real-time interpretability of the autoregulation status. When PRx>0.3 is sustained for long periods, typically of at least half an hour, the bar shows a pattern called "red solid line" (RSL). RSL was previously described to precede refractory intracranial hypertension and brain death. Research question We aimed to describe pathophysiological changes in measured signals/parameters during RSL. Material and methods Observation of time-trends of PRx, intracranial pressure, cerebral perfusion pressure, brain oxygenation and compensatory reserve of TBI patients with RSL. Results Three pathophysiological patterns were identified: RSL precedes intracranial hypertension, RSL is preceded by intracranial hypertension, or RSL is preceded by brain hypoperfusion. In all cases, RSL was followed by death and the RSL onset was between 1 h and 1 day before the terminal event. Discussion and conclusion RSL precedes death in intensive care and could represent a marker for terminal clinical deterioration in TBI patients. These findings warrant further investigations in larger cohorts to characterise pathophysiological mechanisms underlying the RSL pattern and whether RSL has a significant relationship with outcome after TBI.
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Affiliation(s)
- 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
| | - Michal M. Placek
- Brain Physics Laboratory Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, UK
- Neurosurgery Department, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Giada Cucciolini
- Brain Physics Laboratory Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, UK
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, University of Pisa, Italy
| | - Virginia Motroni
- Brain Physics Laboratory Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, UK
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, University of Pisa, Italy
| | - Claudia A. Smith
- Brain Physics Laboratory Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, UK
| | - Peter Hutchinson
- 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
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Foreman B, Kapinos G, Wainwright MS, Ngwenya LB, O'Phelan KH, LaRovere KL, Kirschen MP, Appavu B, Lazaridis C, Alkhachroum A, Maciel CB, Amorim E, Chang JJ, Gilmore EJ, Rosenthal ES, Park S. Practice Standards for the Use of Multimodality Neuromonitoring: A Delphi Consensus Process. Crit Care Med 2023; 51:1740-1753. [PMID: 37607072 PMCID: PMC11036878 DOI: 10.1097/ccm.0000000000006016] [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] [Indexed: 08/24/2023]
Abstract
OBJECTIVES To address areas in which there is no consensus for the technologies, effort, and training necessary to integrate and interpret information from multimodality neuromonitoring (MNM). DESIGN A three-round Delphi consensus process. SETTING Electronic surveys and virtual meeting. SUBJECTS Participants with broad MNM expertise from adult and pediatric intensive care backgrounds. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Two rounds of surveys were completed followed by a virtual meeting to resolve areas without consensus and a final survey to conclude the Delphi process. With 35 participants consensus was achieved on 49% statements concerning MNM. Neurologic impairment and the potential for MNM to guide management were important clinical considerations. Experts reached consensus for the use of MNM-both invasive and noninvasive-for patients in coma with traumatic brain injury, aneurysmal subarachnoid hemorrhage, and intracranial hemorrhage. There was consensus that effort to integrate and interpret MNM requires time independent of daily clinical duties, along with specific skills and expertise. Consensus was reached that training and educational platforms are necessary to develop this expertise and to provide clinical correlation. CONCLUSIONS We provide expert consensus in the clinical considerations, minimum necessary technologies, implementation, and training/education to provide practice standards for the use of MNM to individualize clinical care.
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Affiliation(s)
- Brandon Foreman
- Department of Neurology & Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH
| | - Gregory Kapinos
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Mark S Wainwright
- Division of Pediatric Neurology, Seattle Children's Hospital, University of Washington, Seattle, WA
| | - Laura B Ngwenya
- Department of Neurology & Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH
- Department of Neurosurgery, University of Cincinnati, Cincinnati, OH
| | | | - Kerri L LaRovere
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Matthew P Kirschen
- Departments of Anesthesiology and Critical Care Medicine, Pediatrics and Neurology, Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Brian Appavu
- Departments of Child Health and Neurology, Phoenix Children's, University of Arizona College of Medicine-Phoenix, Phoenix, AZ
| | - Christos Lazaridis
- Departments of Neurology and Neurosurgery, University of Chicago, Chicago, IL
| | | | - Carolina B Maciel
- Department of Neurology & Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
- Division of Pediatric Neurology, Seattle Children's Hospital, University of Washington, Seattle, WA
- Department of Neurosurgery, University of Cincinnati, Cincinnati, OH
- Department of Neurology, University of Miami, Miami, FL
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA
- Departments of Anesthesiology and Critical Care Medicine, Pediatrics and Neurology, Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
- Departments of Child Health and Neurology, Phoenix Children's, University of Arizona College of Medicine-Phoenix, Phoenix, AZ
- Departments of Neurology and Neurosurgery, University of Chicago, Chicago, IL
- Departments of Neurology and Neurosurgery, University of Florida, Tampa, FL
- Department of Neurology, University of Utah, Salt Lake City, UT
- Department of Neurology, Yale University, New Haven, CT
- Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA
- Department of Critical Care and Georgetown University, Department of Neurology, MedStar Washington Hospital Center, Washington, DC
- Department of Neurology, Massachusetts General Hospital, Boston, MA
- Departments of Neurology and Biomedical Informatics, Columbia University, New York, NY
| | - Edilberto Amorim
- Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA
| | - Jason J Chang
- Department of Critical Care and Georgetown University, Department of Neurology, MedStar Washington Hospital Center, Washington, DC
| | | | - Eric S Rosenthal
- Department of Neurology, Massachusetts General Hospital, Boston, MA
| | - Soojin Park
- Departments of Neurology and Biomedical Informatics, Columbia University, New York, NY
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Beqiri E, Badjatia N, Ercole A, Foreman B, Hu P, Hu X, LaRovere K, Meyfroidt G, Moberg D, Robba C, Rosenthal ES, Smielewski P, Wainwright MS, Park S. Common Data Elements for Disorders of Consciousness: Recommendations from the Working Group on Physiology and Big Data. Neurocrit Care 2023; 39:593-599. [PMID: 37704934 PMCID: PMC10782548 DOI: 10.1007/s12028-023-01846-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 08/17/2023] [Indexed: 09/15/2023]
Abstract
BACKGROUND The implementation of multimodality monitoring in the clinical management of patients with disorders of consciousness (DoC) results in physiological measurements that can be collected in a continuous and regular fashion or even at waveform resolution. Such data are considered part of the "Big Data" available in intensive care units and are potentially suitable for health care-focused artificial intelligence research. Despite the richness in content of the physiological measurements, and the clinical implications shown by derived metrics based on those measurements, they have been largely neglected from previous attempts in harmonizing data collection and standardizing reporting of results as part of common data elements (CDEs) efforts. CDEs aim to provide a framework for unifying data in clinical research and help in implementing a systematic approach that can facilitate reliable comparison of results from clinical studies in DoC as well in international research collaborations. METHODS To address this need, the Neurocritical Care Society's Curing Coma Campaign convened a multidisciplinary panel of DoC "Physiology and Big Data" experts to propose CDEs for data collection and reporting in this field. RESULTS We report the recommendations of this CDE development panel and disseminate CDEs to be used in physiologic and big data studies of patients with DoC. CONCLUSIONS These CDEs will support progress in the field of DoC physiologic and big data and facilitate international collaboration.
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Affiliation(s)
- Erta Beqiri
- Brain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Neeraj Badjatia
- Program in Trauma, Department of Neurology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Ari Ercole
- Division of Anaesthesia, University of Cambridge, Cambridge, UK
| | | | - Peter Hu
- Program in Trauma, Departments of Anesthesiology and Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Xiao Hu
- School of Nursing, Emory University, Atlanta, GA, USA
| | - Kerri LaRovere
- Department of Neurology, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Geert Meyfroidt
- Department and Laboratory of Intensive Care Medicine, University Hospitals Leuven and KU Leuven, Louvain, Belgium
| | - Dick Moberg
- Moberg Analytics, Inc, Philadelphia, PA, USA
| | - Chiara Robba
- Istituto di Ricovero e Cura a Carattere Scientifico Policlinico San Martino, Genoa, Italy
- Dipartimento di Scienze Chirurgiche e Diagnostiche Integrate, University of Genoa, Genoa, Italy
| | - Eric S Rosenthal
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Peter Smielewski
- Brain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Mark S Wainwright
- Division of Pediatric Neurology, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - Soojin Park
- Departments of Neurology and Biomedical Informatics, Columbia University Vagelos College of Physicians and Surgeons, NewYork-Presbyterian Hospital, New York, NY, USA.
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10
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Hossain I, Rostami E, Marklund N. The management of severe traumatic brain injury in the initial postinjury hours - current evidence and controversies. Curr Opin Crit Care 2023; 29:650-658. [PMID: 37851061 PMCID: PMC10624411 DOI: 10.1097/mcc.0000000000001094] [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] [Indexed: 10/19/2023]
Abstract
PURPOSE OF REVIEW To provide an overview of recent studies discussing novel strategies, controversies, and challenges in the management of severe traumatic brain injury (sTBI) in the initial postinjury hours. RECENT FINDINGS Prehospital management of sTBI should adhere to Advanced Trauma Life Support (ATLS) principles. Maintaining oxygen saturation and blood pressure within target ranges on-scene by anesthetist, emergency physician or trained paramedics has resulted in improved outcomes. Emergency department (ED) management prioritizes airway control, stable blood pressure, spinal immobilization, and correction of impaired coagulation. Noninvasive techniques such as optic nerve sheath diameter measurement, pupillometry, and transcranial Doppler may aid in detecting intracranial hypertension. Osmotherapy and hyperventilation are effective as temporary measures to reduce intracranial pressure (ICP). Emergent computed tomography (CT) findings guide surgical interventions such as decompressive craniectomy, or evacuation of mass lesions. There are no neuroprotective drugs with proven clinical benefit, and steroids and hypothermia cannot be recommended due to adverse effects in randomized controlled trials. SUMMARY Advancement of the prehospital and ED care that include stabilization of physiological parameters, rapid correction of impaired coagulation, noninvasive techniques to identify raised ICP, emergent surgical evacuation of mass lesions and/or decompressive craniectomy, and temporary measures to counteract increased ICP play pivotal roles in the initial management of sTBI. Individualized approaches considering the underlying pathology are crucial for accurate outcome prediction.
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Affiliation(s)
- Iftakher Hossain
- Neurocenter, Department of Neurosurgery, Turku University Hospital, Turku, Finland
- Department of Clinical Neurosciences, Neurosurgery Unit, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK
| | - Elham Rostami
- Department of Medical Sciences, Section of Neurosurgery, Uppsala University, Uppsala
- Department of Neuroscience, Karolinska institute, Stockholm
| | - Niklas Marklund
- Department of Clinical Sciences Lund, Neurosurgery, Lund University, Department of Neurosurgery, Skåne University Hospital, Lund, Sweden
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11
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Lazaridis C, Foreman B. Management Strategies Based on Multi-Modality Neuromonitoring in Severe Traumatic Brain Injury. Neurotherapeutics 2023; 20:1457-1471. [PMID: 37491682 PMCID: PMC10684466 DOI: 10.1007/s13311-023-01411-2] [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] [Accepted: 07/14/2023] [Indexed: 07/27/2023] Open
Abstract
Secondary brain injury after neurotrauma is comprised of a host of distinct, potentially concurrent and interacting mechanisms that may exacerbate primary brain insult. Multimodality neuromonitoring is a method of measuring multiple aspects of the brain in order to understand the signatures of these different pathomechanisms and to detect, treat, or prevent potentially reversible secondary brain injuries. The most studied invasive parameters include intracranial pressure (ICP), cerebral perfusion pressure (CPP), autoregulatory indices, brain tissue partial oxygen tension, and tissue energy and metabolism measures such as the lactate pyruvate ratio. Understanding the local metabolic state of brain tissue in order to infer pathology and develop appropriate management strategies is an area of active investigation. Several clinical trials are underway to define the role of brain tissue oxygenation monitoring and electrocorticography in conjunction with other multimodal neuromonitoring information, including ICP and CPP monitoring. Identifying an optimal CPP to guide individualized management of blood pressure and ICP has been shown to be feasible, but definitive clinical trial evidence is still needed. Future work is still needed to define and clinically correlate patterns that emerge from integrated measurements of metabolism, pressure, flow, oxygenation, and electrophysiology. Pathophysiologic targets and precise critical care management strategies to address their underlying causes promise to mitigate secondary injuries and hold the potential to improve patient outcome. Advancements in clinical trial design are poised to establish new standards for the use of multimodality neuromonitoring to guide individualized clinical care.
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Affiliation(s)
- Christos Lazaridis
- Division of Neurocritical Care, Departments of Neurology and Neurosurgery, University of Chicago Medical Center, 5841 S. Maryland Avenue, Chicago, IL, 60637, USA.
| | - Brandon Foreman
- Division of Neurocritical Care, Department of Neurology and Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH, USA
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12
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Vitt JR, Loper NE, Mainali S. Multimodal and autoregulation monitoring in the neurointensive care unit. Front Neurol 2023; 14:1155986. [PMID: 37153655 PMCID: PMC10157267 DOI: 10.3389/fneur.2023.1155986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/04/2023] [Indexed: 05/10/2023] Open
Abstract
Given the complexity of cerebral pathology in patients with acute brain injury, various neuromonitoring strategies have been developed to better appreciate physiologic relationships and potentially harmful derangements. There is ample evidence that bundling several neuromonitoring devices, termed "multimodal monitoring," is more beneficial compared to monitoring individual parameters as each may capture different and complementary aspects of cerebral physiology to provide a comprehensive picture that can help guide management. Furthermore, each modality has specific strengths and limitations that depend largely on spatiotemporal characteristics and complexity of the signal acquired. In this review we focus on the common clinical neuromonitoring techniques including intracranial pressure, brain tissue oxygenation, transcranial doppler and near-infrared spectroscopy with a focus on how each modality can also provide useful information about cerebral autoregulation capacity. Finally, we discuss the current evidence in using these modalities to support clinical decision making as well as potential insights into the future of advanced cerebral homeostatic assessments including neurovascular coupling.
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Affiliation(s)
- Jeffrey R. Vitt
- Department of Neurological Surgery, UC Davis Medical Center, Sacramento, CA, United States
- Department of Neurology, UC Davis Medical Center, Sacramento, CA, United States
| | - Nicholas E. Loper
- Department of Neurological Surgery, UC Davis Medical Center, Sacramento, CA, United States
| | - Shraddha Mainali
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, United States
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13
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Robba C, Camporota L, Citerio G. Acute respiratory distress syndrome complicating traumatic brain injury. Can opposite strategies converge? Intensive Care Med 2023; 49:583-586. [PMID: 37017697 DOI: 10.1007/s00134-023-07043-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 03/16/2023] [Indexed: 04/06/2023]
Affiliation(s)
- Chiara Robba
- Anesthesia and Intensive Care, IRCCS Policlinico San Martino, Genoa, Italy.
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Viale Benedetto XV 16, Genoa, Italy.
| | - Luigi Camporota
- Department of Adult Critical Care, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Centre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Giuseppe Citerio
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
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14
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Sharma R, Tsikvadze M, Peel J, Howard L, Kapoor N, Freeman WD. Multimodal monitoring: practical recommendations (dos and don'ts) in challenging situations and uncertainty. Front Neurol 2023; 14:1135406. [PMID: 37206910 PMCID: PMC10188941 DOI: 10.3389/fneur.2023.1135406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 04/06/2023] [Indexed: 05/21/2023] Open
Abstract
With the advancements in modern medicine, new methods are being developed to monitor patients in the intensive care unit. Different modalities evaluate different aspects of the patient's physiology and clinical status. The complexity of these modalities often restricts their use to the realm of clinical research, thereby limiting their use in the real world. Understanding their salient features and their limitations can aid physicians in interpreting the concomitant information provided by multiple modalities to make informed decisions that may affect clinical care and outcomes. Here, we present a review of the commonly used methods in the neurological intensive care unit with practical recommendations for their use.
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Affiliation(s)
- Rohan Sharma
- Department of Neurology, Mayo Clinic in Florida, Jacksonville, FL, United States
- *Correspondence: Rohan Sharma
| | - Mariam Tsikvadze
- Department of Neurology, Mayo Clinic in Florida, Jacksonville, FL, United States
| | - Jeffrey Peel
- Department of Neurology, Mayo Clinic in Florida, Jacksonville, FL, United States
| | - Levi Howard
- Department of Neurology, Mayo Clinic in Florida, Jacksonville, FL, United States
| | - Nidhi Kapoor
- Department of Neurology, Baptist Medical Center, Jacksonville, FL, United States
| | - William D. Freeman
- Department of Neurology, Mayo Clinic in Florida, Jacksonville, FL, United States
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