RESUMEN
The pathophysiological underpinnings of critically disrupted brain connectomes resulting in coma are poorly understood. Inflammation is potentially an important but still undervalued factor. Here, we present a first-in-human prospective study using the 18-kDa translocator protein (TSPO) radioligand 18F-DPA714 for PET imaging to allow in vivo neuroimmune activation quantification in patients with coma (n = 17) following either anoxia or traumatic brain injuries in comparison with age- and sex-matched controls. Our findings yielded novel evidence of an early inflammatory component predominantly located within key cortical and subcortical brain structures that are putatively implicated in consciousness emergence and maintenance after severe brain injury (i.e. mesocircuit and frontoparietal networks). We observed that traumatic and anoxic patients with coma have distinct neuroimmune activation profiles, both in terms of intensity and spatial distribution. Finally, we demonstrated that both the total amount and specific distribution of PET-measurable neuroinflammation within the brain mesocircuit were associated with the patient's recovery potential. We suggest that our results can be developed for use both as a new neuroprognostication tool and as a promising biometric to guide future clinical trials targeting glial activity very early after severe brain injury.
Asunto(s)
Lesiones Encefálicas , Coma Postraumatismo Craneoencefálico , Humanos , Coma/complicaciones , Coma Postraumatismo Craneoencefálico/complicaciones , Estudios Prospectivos , Imagen por Resonancia Magnética/métodos , Encéfalo/metabolismo , Lesiones Encefálicas/complicaciones , Hipoxia/complicaciones , Receptores de GABA/metabolismoRESUMEN
PURPOSE: Severe traumatic brain injury (TBI) leads to acute coma and may result in prolonged disorder of consciousness (pDOC). We aimed to determine whether right median nerve electrical stimulation is a safe and effective treatment for accelerating emergence from coma after TBI. METHODS: This randomised controlled trial was performed in 22 centres in China. Participants with acute coma at 7-14 days after TBI were randomly assigned (1:1) to either routine therapy and right median nerve electrical stimulation (RMNS group) or routine treatment (control group). The RMNS group received 20 mA, 300 µs, 40 Hz stimulation pulses, lasting 20 s per minutes, 8 h per day, for 2 weeks. The primary outcome was the proportion of patients who regained consciousness 6 months post-injury. The secondary endpoints were Glasgow Coma Scale (GCS), Full Outline of Unresponsiveness scale (FOUR), Coma Recovery Scale-Revised (CRS-R), Disability Rating Scale (DRS) and Glasgow Outcome Scale Extended (GOSE) scores reported as medians on day 28, 3 months and 6 months after injury, and GCS and FOUR scores on day 1 and day 7 during stimulation. Primary analyses were based on the intention-to-treat set. RESULTS: Between March 26, 2016, and October 18, 2020, 329 participants were recruited, of whom 167 were randomised to the RMNS group and 162 to the control group. At 6 months post-injury, a higher proportion of patients in the RMNS group regained consciousness compared with the control group (72.5%, n = 121, 95% confidence interval (CI) 65.2-78.7% vs. 56.8%, n = 92, 95% CI 49.1-64.2%, p = 0.004). GOSE at 3 months and 6 months (5 [interquartile range (IQR) 3-7] vs. 4 [IQR 2-6], p = 0.002; 6 [IQR 3-7] vs. 4 [IQR 2-7], p = 0.0005) and FOUR at 28 days (15 [IQR 13-16] vs. 13 [interquartile range (IQR) 11-16], p = 0.002) were significantly increased in the RMNS group compared with the control group. Trajectory analysis showed that significantly more patients in the RMNS group had faster GCS, CRS-R and DRS improvement (p = 0.01, 0.004 and 0.04, respectively). Adverse events were similar in both groups. No serious adverse events were associated with the stimulation device. CONCLUSION: Right median nerve electrical stimulation is a possible effective treatment for patients with acute traumatic coma, that will require validation in a confirmatory trial.
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Lesiones Traumáticas del Encéfalo , Coma Postraumatismo Craneoencefálico , Humanos , Coma Postraumatismo Craneoencefálico/terapia , Coma/etiología , Coma/terapia , Nervio Mediano , Lesiones Traumáticas del Encéfalo/complicaciones , Lesiones Traumáticas del Encéfalo/terapia , Escala de Coma de Glasgow , Estimulación EléctricaRESUMEN
OBJECTIVE: We aimed to explore the pathogenesis of traumatic coma related to functional connectivity (FC) within the default mode network (DMN), within the executive control network (ECN) and between the DMN and ECN and to investigate its capacity for predicting awakening. METHODS: We carried out resting-state functional magnetic resonance imaging (fMRI) examinations on 28 traumatic coma patients and 28 age-matched healthy controls. DMN and ECN nodes were split into regions of interest (ROIs), and node-to-node FC analysis was conducted on individual participants. To identify coma pathogenesis, we compared the pairwise FC differences between coma patients and healthy controls. Meanwhile, we divided the traumatic coma patients into different subgroups based on their clinical outcome scores at 6 months postinjury. Considering the awakening prediction, we calculated the area under the curve (AUC) to evaluate the predictive ability of changed FC pairs. RESULTS: We found a massive pairwise FC alteration in the patients with traumatic coma compared to the healthy controls [45% (33/74) pairwise FC located in the DMN, 27% (20/74) pairwise FC located in the ECN, and 28% (21/74) pairwise FC located between the DMN and ECN]. Moreover, in the awake and coma groups, there were 67% (12/18) pairwise FC alterations located in the DMN and 33% (6/18) pairwise FC alterations located between the DMN and ECN. We also indicated that pairwise FC that showed a predictive value of 6-month awakening was mainly located in the DMN rather than in the ECN. Specifically, decreased FC between the right superior frontal gyrus and right parahippocampal gyrus (in the DMN) showed the highest predictive ability (AUC = 0.827). CONCLUSION: In the acute phase of severe traumatic brain injury (sTBI), the DMN plays a more prominent role than the ECN and the DMN-ECN interaction in the emergence of traumatic coma and the prediction of 6-month awakening.
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Lesiones Traumáticas del Encéfalo , Coma Postraumatismo Craneoencefálico , Humanos , Coma/diagnóstico por imagen , Coma/etiología , Función Ejecutiva , Red en Modo Predeterminado , Imagen por Resonancia Magnética/métodos , Encéfalo/diagnóstico por imagen , Mapeo Encefálico/métodosRESUMEN
Introduction : Le coma non traumatique est une urgence médicale, relativement fréquente dont les différents aspects restent encore obscurs dans les services de réanimation en Afrique. Objectif : Cette étude avait pour but de décrire les aspects épidémiologiques, étiologiques et pronostiques des comas non traumatiques (CNT). Méthodes : Il s'était agi d'une étude rétrospective descriptive menée au Centre Hospitalier Universitaire Sylvanus Olympio à l'Unité des Soins Intensifs (USI) de janvier 2018 à décembre 2019. Résultats : L'étude avait concerné 484 patients hospitalisés pour comas non traumatiques sur un total de 1835 patients. Les comas non traumatiques de l'adulte représentaient 26,4% des admissions à l'USI. L'âge moyen des patients était de 52,8 ans (extrêmes de 18 et 92 ans) avec une sex-ratio (H/F) de 0,94. Plus de la moitié des patients avait été référée de structures sanitaires périphériques (55,4%). L'hypertension artérielle (HTA) était l'antécédent le plus retrouvé dans 36,4% ; suivi du diabète et de l'infection au virus de l'immunodéficience acquise (VIH) dans 14,9% chacun. Le coma était de survenue brutale dans 77,7% des cas. Les étiologies des comas étaient dominées par les causes vasculaires dans 32,2% des cas, puis les causes infectieuses dans 27,3% des cas et les comas urémiques dans 14,1% des cas. Le pronostic était défavorable avec une mortalité de 68,6%. La première étiologie de décès concernait les causes vasculaires. Conclusion : L'amélioration du pronostic des comas non traumatiques passe nécessairement par une amélioration du plateau technique pour une meilleure prise en charge des patients
Introduction: The non-traumatic coma is a medical emergency relatively frequent which different aspects remain obscure in intensive care units in Africa. Goals: The aim of this study was therefore to describe the epidemiological, etiological and prognostic aspects of non-traumatic comas. Methodology: This was a retrospective descriptive study carried out at the Sylvanus Olympio Teaching Hospital in the Intensive Care Unit (USI) from January 2018 to December 2019. Results: The study involved 484 patients hospitalized for non-traumatic comas out of 1835 patients. Non-traumatic comas in adults were 26.4% of admissions in the Intensive Care Unit. The mean age of patients was 52.8 years of a sex ratio (M / F) of 0.94. More than half of patients (55.4%) were referred from peripheral care centers. Arterial hypertension was the most common antecedent found in 36.4%, followed by diabetes and the infection of human immunodeficiency virus (HIV) at 14.9% each. The coma was sudden aspect in 77.7% of the cases. Aetiologies of the comas were dominated by vascular causes in 32.2% of causes, then infectious in 27.3% of cases and uremic comas in 14.1% of cases. The prognosis was unfavorable with 68.6% mortality. The first etiology of death was related to vascular cases. Conclusion: The Improving of the prognosis of non-traumatic comas needs an improvement of modern medical technology for a better patient care.
Asunto(s)
Humanos , Masculino , Femenino , Adulto , Coma Postraumatismo CraneoencefálicoRESUMEN
OBJECTIVES: Recovery from coma might critically depend on the structural and functional integrity of frontoparietal networks. We aimed to measure this integrity in traumatic brain injury and anoxo-ischemic (cardiac arrest) coma patients by using an original multimodal MRI protocol. DESIGN: Prospective cohort study. SETTING: Three Intensive Critical Care Units affiliated to the University in Toulouse (France). PATIENTS: We longitudinally recruited 43 coma patients (Glasgow Coma Scale at the admission < 8; 29 cardiac arrest and 14 traumatic brain injury) and 34 age-matched healthy volunteers. Exclusion criteria were disorders of consciousness lasting more than 30 days and focal brain damage within the explored brain regions. Patient assessments were conducted at least 2 days (5 ± 2 d) after complete withdrawal of sedation. All patients were followed up (Coma Recovery Scale-Revised) 3 months after acute brain injury. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Functional and structural MRI data were recorded, and the analysis was targeted on the posteromedial cortex, the medial prefrontal cortex, and the cingulum. Univariate analyses and machine learning techniques were used to assess diagnostic and predictive values. Coma patients displayed significantly lower medial prefrontal cortex-posteromedial cortex functional connectivity (area under the curve, 0.94; 95% CI, 0.93-0.95). Cardiac arrest patients showed specific structural disturbances within posteromedial cortex. Significant cingulum architectural disturbances were observed in traumatic brain injury patients. The machine learning medial prefrontal cortex-posteromedial cortex multimodal classifier had a significant predictive value (area under the curve, 0.96; 95% CI, 0.95-0.97), best combination of subregions that discriminates a binary outcome based on Coma Recovery Scale-Revised). CONCLUSIONS: This exploratory study suggests that frontoparietal functional disconnections are specifically observed in coma and their structural counterpart provides information about brain injury mechanisms. Multimodal MRI biomarkers of frontoparietal disconnection predict 3-month outcome in our sample. These findings suggest that fronto-parietal disconnection might be particularly relevant for coma outcome prediction and could inspire innovative precision medicine approaches.
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Coma Postraumatismo Craneoencefálico/patología , Coma/patología , Lóbulo Frontal/patología , Lóbulo Parietal/patología , Adulto , Anciano , Estudios de Casos y Controles , Coma/diagnóstico por imagen , Coma/etiología , Coma/fisiopatología , Coma Postraumatismo Craneoencefálico/diagnóstico por imagen , Coma Postraumatismo Craneoencefálico/fisiopatología , Femenino , Lóbulo Frontal/diagnóstico por imagen , Lóbulo Frontal/fisiopatología , Escala de Coma de Glasgow , Paro Cardíaco/complicaciones , Humanos , Estudios Longitudinales , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Neuroimagen , Lóbulo Parietal/diagnóstico por imagen , Lóbulo Parietal/fisiopatología , Estudios Prospectivos , Adulto JovenRESUMEN
BACKGROUND: It is not currently possible to predict which patients will develop chronic disorders of consciousness (DoC) after severe traumatic brain injury (TBI). Although the ascending arousal network (AAN) supports human consciousness, it is unknown which AAN pathways must be preserved for patients to recover consciousness. METHODS: Sixteen patients with acute traumatic coma and 16 matched healthy controls were scanned with high angular resolution diffusion imaging (HARDI). All patients recovered consciousness (Recovery Cohort). Nine were scanned longitudinally: first in the ICU (Acute), then at ≥5 months post-injury (Follow-up). Six separate patients with post-traumatic DoC were scanned ≥5 months post-injury (Chronic DoC Cohort). For each AAN pathway, we computed the median relative change in Acute-to-Follow-up Connectivity Probability (CP) in the Recovery Cohort. We then used Wilcoxon tests with Bonferroni correction to compare CP in each AAN pathway in the Recovery Cohort at Follow-up versus the Chronic DoC Cohort. In an exploratory analysis, we used principal component analysis (PCA) to determine whether linear combinations of AAN CP values could separate the Chronic DoC Cohort from the Recovery Cohort and the healthy controls. RESULTS: In the Recovery Cohort, the largest relative AAN CP changes were in the brainstem-to-thalamus (median [IQR] = 0.7 [0.09, 0.9]) and forebrain-to-occipital lobe (-0.8 [-0.9, -0.8]) pathways. The AAN connections that differed in the cross-sectional analysis between the Recovery Cohort at Follow-up and the Chronic DoC Cohort included brainstem-to-hypothalamus (W = 53, PBonf = 0.02), brainstem-to-temporal lobe (W = 52, PBonf = 0.04), and thalamus-to-temporal lobe (W = 54, PBonf = 0.009). Plotting the first two principal components of AAN connectivity resulted in a linear separation of Chronic DoC patients from other study groups. CONCLUSIONS: We provide evidence for a longitudinal increase in brainstem-thalamic connectivity during recovery of consciousness after traumatic coma. Cross-sectional analyses revealed that brainstem-hypothalamus, brainstem-temporal lobe, and thalamus-temporal lobe connectivity differed between patients who recovered consciousness and those with a chronic DoC. These observations provide the basis for further investigation into AAN connectivity as a biomarker for recovery of consciousness after traumatic coma.
Asunto(s)
Coma Postraumatismo Craneoencefálico , Nivel de Alerta , Estado de Conciencia , Trastornos de la Conciencia , Estudios Transversales , HumanosRESUMEN
INTRODUCTION: The aim of this study was to assess the results and adverse effects of bromocriptine in patients with traumatic brain injury-vegetative state (TBI-VS) or traumatic brain injury-minimally conscious state (TBI-MCS). METHODS: We conducted a retrospective review of 10 patients, six with TBI-VS and four with TBI-MCS. All patients received bromocriptine at a starting dose of 2.5mg twice daily. Bromocriptine was titrated up to 7.5 or 12.5mg twice daily according to response and was maintained for at least 4 weeks. Various assessment scales were used in the following stages: before bromocriptine administration, at 4 weeks post bromocriptine prescription, and at hospital discharge. The assessment scales used were the Coma Recovery Scale-Revised (CRS-R), Disability Rating Scale, Glasgow Coma Scale, Barthel Scale, and Marshall Scale. RESULTS: Of the 10 patients, four with TBI-MCS and four with TBI-VS achieved a score of 23 points at discharge in the CRS-R, thus emerging from VS or MCS and regaining functional status. There were only two patients who emerged from VS but remained in MCS (8 to 11 and 5 to 10 points in CRS-R). CONCLUSIONS: Considering the poor prognosis for recovery in these patients, bromocriptine use has a positive risk-benefit ratio at a dosage of at least 7.5mg twice daily for 4 weeks.
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Lesiones Traumáticas del Encéfalo/complicaciones , Bromocriptina/uso terapéutico , Fármacos del Sistema Nervioso Central/uso terapéutico , Trastornos de la Conciencia/tratamiento farmacológico , Adolescente , Adulto , Bromocriptina/administración & dosificación , Fármacos del Sistema Nervioso Central/administración & dosificación , Coma Postraumatismo Craneoencefálico/tratamiento farmacológico , Esquema de Medicación , Humanos , Persona de Mediana Edad , Estado Vegetativo Persistente/tratamiento farmacológico , Estudios Retrospectivos , Medición de Riesgo , Índices de Gravedad del Trauma , Adulto JovenRESUMEN
PURPOSES: This study aimed to clarify the prognosis of polytrauma patients presenting to the emergency department (ED) with a Glasgow Coma Scale score (GCS) of 3. METHODS: A trauma registry system has been established at our institution since 2009. The current study reviewed patients in the registry who presented to the ED with a GCS of 3 from January 2011 to December 2015. Surviving and non-surviving patients were compared to identify the prognostic factors of patient survival. The study also aimed to determine the factors contributing to patients who survived with a GCS > 13 at discharge. RESULTS: During the study period, 145 patients were enrolled in the study, 119 of whom (82.1%) did not survive the traumatic insult. Of the 26 survivors, 13 (9.0%) had a GCS of 14 or 15 at discharge. The multiple logistic regression revealed that a lack of bilateral dilated and fixed pupils (BFDP) (OR 5.967, 95% CI 1.780-19.997, p = 0.004) and a GCS > 3 after resuscitation (OR 6.875, 95% CI 2.135-22.138, p = 0.001) were independent prognostic factors of survival. Based on the multiple logistic regression, an age under 40 years (OR 16.405, 95% CI 1.520-177.066, p = 0.021) and a GCS > 3 after resuscitation (OR 12.100, 95% CI 1.058-138.352, p = 0.045) were independent prognostic factors of a GCS > 13 at discharge. CONCLUSION: Aggressive resuscitation still provided benefit to polytrauma patients presenting with a GCS of 3, especially those with a rapid response to the resuscitation. Young patients with a deep coma on arrival had a higher probability of functional recovery after resuscitation in the ED.
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Coma Postraumatismo Craneoencefálico/fisiopatología , Traumatismo Múltiple/fisiopatología , Trastornos de la Pupila/epidemiología , Escala Resumida de Traumatismos , Traumatismos Abdominales/epidemiología , Traumatismos Abdominales/terapia , Adulto , Factores de Edad , Anciano , Coma Postraumatismo Craneoencefálico/epidemiología , Traumatismos Craneocerebrales/epidemiología , Traumatismos Craneocerebrales/fisiopatología , Traumatismos Craneocerebrales/terapia , Extremidades/lesiones , Femenino , Escala de Coma de Glasgow , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Mortalidad , Traumatismo Múltiple/epidemiología , Traumatismo Múltiple/terapia , Pronóstico , Recuperación de la Función , Reflejo Pupilar , Resucitación , Estudios Retrospectivos , Taiwán/epidemiología , Traumatismos Torácicos/epidemiología , Traumatismos Torácicos/terapiaRESUMEN
No disponible
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Humanos , Femenino , Anciano , Hemorragia Cerebral Traumática/diagnóstico por imagen , Contusión Encefálica , Hemorragia Cerebral Traumática/fisiopatología , Coma Postraumatismo Craneoencefálico , Traumatismos Craneocerebrales/complicaciones , Tomografía Computarizada por Rayos X/métodos , Electrocardiografía/métodos , Infarto del Miocardio sin Elevación del STRESUMEN
INTRODUCTION: Ventilator-associated pneumonia (VAP) is the first cause of healthcare-associated infections in intensive care units (ICUs) and brain injury is one of the main risk factors for early-onset VAP. Antibiotic prophylaxis has been reported to decrease their occurrence in brain-injured patients, but a lack of controlled randomised trials and the risk of induction of bacterial resistance explain the low level of recommendations. The goal of this study is to determine whether a single dose of ceftriaxone within the 12 hours postintubation after severe brain injury can decrease the risk of early-onset VAP. METHODS AND ANALYSIS: The PROPHY-VAP is a French multicentre, randomised, double-blind, placebo-controlled, clinical trial. Adult brain-injured patients (n=320) with a Glasgow Coma Scale ≤12, requiring mechanical ventilation for more than 48 hours, are randomised to receive either a single dose of ceftriaxone 2 g or a placebo within the 12 hours after tracheal intubation. The primary endpoint is the proportion of patients developing VAP from the 2nd to the 7th day after mechanical ventilation. Secondary endpoints include the proportion of patients developing late VAP (>7 days after tracheal intubation), the number of ventilator-free days, VAP-free days and antibiotic-free days, length of stay in the ICU, proportion of patients with ventilator-associated events and mortality during their ICU stay. ETHICS AND DISSEMINATION: The initial research project was approved by the Institutional Review Board of OUEST III (France) on 20 October 2014 (registration No 2014-001668-36) and carried out according to the principles of the Declaration of Helsinki and the Clinical Trials Directive 2001/20/EC of the European Parliament relating to the Good Clinical Practice guidelines. The results of this study will be presented in national and international meetings and published in an international peer-reviewed journal. TRIAL REGISTRATION NUMBER: NCT02265406; Pre-results.
Asunto(s)
Antibacterianos/uso terapéutico , Ceftriaxona/uso terapéutico , Protocolos de Ensayos Clínicos como Asunto , Coma Postraumatismo Craneoencefálico/complicaciones , Neumonía Asociada al Ventilador/tratamiento farmacológico , Neumonía Asociada al Ventilador/etiología , Adulto , Anciano , Método Doble Ciego , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neumonía Asociada al Ventilador/prevención & control , Ensayos Clínicos Controlados Aleatorios como AsuntoRESUMEN
BACKGROUND: Traumatic brain injury (TBI) has become the most common cause of death and disability in persons between 15 and 30 years of age, and about 10-15% of patients affected by TBI will end up in a coma. Coma caused by TBI presents a significant challenge to neuroscientists. Right median nerve electrical stimulation has been reported as a simple, inexpensive, non-invasive technique to speed recovery and improve outcomes for traumatic comatose patients. METHODS/DESIGN: This multicentre, prospective, randomised (1:1) controlled trial aims to demonstrate the efficacy and safety of electrical right median nerve stimulation (RMNS) in both accelerating emergence from coma and promoting long-term outcomes. This trial aims to enrol 380 TBI comatose patients to partake in either an electrical stimulation group or a non-stimulation group. Patients assigned to the stimulation group will receive RMNS in addition to standard treatment at an amplitude of 15-20 mA with a pulse width of 300 µs at 40 Hz ON for 20 s and OFF for 40 s. The electrical treatment will last for 8 h per day for 2 weeks. The primary endpoint will be the percentage of patients regaining consciousness 6 months after injury. The secondary endpoints will be Extended Glasgow Outcome Scale, Coma Recovery Scale-Revised and Disability Rating Scale scores at 28 days, 3 months and 6 months after injury; Glasgow Coma Scale, Glasgow Coma Scale Motor Part and Full Outline of Unresponsiveness scale scores on day 1 and day 7 after enrolment and 28 days, 3 months and 6 months after injury; duration of unconsciousness and mechanical ventilation; length of intensive care unit and hospital stays; and incidence of adverse events. DISCUSSION: Right median nerve electrical stimulation has been used as a safe, inexpensive, non-invasive therapy for neuroresuscitation of coma patients for more than two decades, yet no trial has robustly proven the efficacy and safety of this treatment. The Asia Coma Electrical Stimulation (ACES) trial has the following novel features compared with other major RMNS trials: (1) the ACES trial is an Asian multicentre randomised controlled trial; (2) RMNS therapy starts at an early stage 7-14 days after the injury; and (3) various assessment scales are used to evaluate the condition of patients. We hope the ACES trial will lead to optimal use of right median nerve electrical treatment. TRIAL REGISTRATION: ClinicalTrials.gov, NCT02645578 . Registered on 23 December 2015.
Asunto(s)
Lesiones Traumáticas del Encéfalo/terapia , Coma Postraumatismo Craneoencefálico/terapia , Terapia por Estimulación Eléctrica/métodos , Nervio Mediano , Adolescente , Adulto , Anciano , Lesiones Traumáticas del Encéfalo/diagnóstico , Lesiones Traumáticas del Encéfalo/fisiopatología , China , Protocolos Clínicos , Coma Postraumatismo Craneoencefálico/diagnóstico , Coma Postraumatismo Craneoencefálico/fisiopatología , Cuidados Críticos , Evaluación de la Discapacidad , Terapia por Estimulación Eléctrica/efectos adversos , Femenino , Escala de Coma de Glasgow , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Recuperación de la Función , Proyectos de Investigación , Respiración Artificial , Factores de Tiempo , Resultado del Tratamiento , Adulto JovenRESUMEN
INTRODUCTION: The Glasgow Coma Scale (GCS) has some limitations when evaluating the unconscious patient. This study aims to validate the Persian version of the FOUR (Full Outline of Unresponsiveness) score as a proposed substitute. METHODS: Two nurses, two nursing students, and two physicians scored the prepared Persian version of the FOUR and GCS in 84 patients with acute brain injury. The inter-rater agreement for the FOUR and the GCS scores was evaluated by the weighted kappa (κ w). The outcome prediction power of the scales was assessed by the area under the curve (AUC) in the ROC curve. RESULTS: The inter-rater agreement of the FOUR was excellent (κ w = 0.923, 95 % CI, 0.874-0.971) and comparable with the one of the GCS (κ w = 0.938, 95 % CI, 0.889-0.987). The area under the curve (AUC) for predicting in-hospital mortality (modified Rankin Scale: 6) was 0.835 for the FOUR (95 % CI, 0.739-0.907) and 0.772 for the GCS (95 % CI, 0.668-0.856) (P = 0.01). AUC for predicting poor outcome (modified Rankin Scale: 3-6) for the total FOUR score was 0.983 (95 % CI, 0.928-0.999), which is comparable with 0.987 for the total GCS score (95 % CI, 0.934-1.000). CONCLUSIONS: The researchers conclude that the Persian version of the FOUR score is a reliable and valid scale to assess unconscious patients with traumatic brain injury and can be substituted for the GCS.
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Lesiones Traumáticas del Encéfalo/diagnóstico , Coma Postraumatismo Craneoencefálico/diagnóstico , Índice de Severidad de la Enfermedad , Índices de Gravedad del Trauma , Adulto , Anciano , Lesiones Traumáticas del Encéfalo/complicaciones , Coma Postraumatismo Craneoencefálico/etiología , Femenino , Escala de Coma de Glasgow/normas , Humanos , Unidades de Cuidados Intensivos , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud , Reproducibilidad de los ResultadosRESUMEN
The right median nerve as a peripheral portal to the central nervous system can be electrically stimulated to help coma arousal after traumatic brain injury (TBI). The present study set out to examine the efficacy and safety of right median nerve electrical stimulation (RMNS) in a cohort of 437 comatose patients after severe TBI from August 2005 to December 2011. The patients were enrolled 2 weeks after their injury and assigned to the RMNS group (n=221) receiving electrical stimulation for 2 weeks or the control group (n = 216) treated by standard management according to the date of birth in the month. The baseline data were similar. After the 2-week treatment, the RMNS-treated patients demonstrated a more rapid increase of the mean Glasgow Coma Score, although statistical significance was not reached (8.43 ± 4.98 vs. 7.47 ± 5.37, p = 0.0532). The follow-up data at 6-month post-injury showed a significantly higher proportion of patients who regained consciousness (59.8% vs. 46.2%, p = 0.0073). There was a lower proportion of vegetative persons in the RMNS group than in the control group (17.6% vs. 22.0%, p = 0.0012). For persons regaining consciousness, the functional independence measurement (FIM) score was higher among the RMNS group patients (91.45 ± 8.65 vs. 76.23 ± 11.02, p < 0.001). There were no unique complications associated with the RMNS treatment. The current study, although with some limitations, showed that RMNS may serve as an easy, effective, and noninvasive technique to promote the recovery of traumatic coma in the early phase.
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Lesiones Encefálicas/complicaciones , Coma Postraumatismo Craneoencefálico/terapia , Terapia por Estimulación Eléctrica/métodos , Nervio Mediano , Adulto , Coma Postraumatismo Craneoencefálico/etiología , Terapia por Estimulación Eléctrica/efectos adversos , Femenino , Estudios de Seguimiento , Escala de Coma de Glasgow , Humanos , Masculino , Persona de Mediana Edad , Resultado del TratamientoRESUMEN
Patients with unresponsive wakefulness syndrome (UWS) or in minimally conscious state (MCS) after brain injury show significant fluctuations in their behavioural abilities over time. As the importance of event-related potentials (ERPs) in the detection of traces of consciousness increases, we investigated the retest reliability of ERPs with repeated tests at four different time points. Twelve healthy controls and 12 inpatients (8 UWS, 4 MCS; 6 traumatic, 6 non-traumatic) were tested twice a day (morning, afternoon) for 2 days with an auditory oddball task. ERPs were recorded with a 256-channel-EEG system, and correlated with behavioural test scores in the Coma Recovery Scale-revised (CRS-R). The number of identifiable P300 responses varied between zero and four in both groups. Reliabilities varied between Krippendorff's α = 0.43 for within-day comparison, and α = 0.25 for between-day comparison in the patient group. Retest reliability was strong for the CRS-R scores for all comparisons (α = 0.83-0.95). The stability of auditory information processing in patients with disorders of consciousness is the basis for other, even more demanding tasks and cognitive potentials. The relatively low ERP-retest reliability suggests that it is necessary to perform repeated tests, especially when probing for consciousness with ERPs. A single negative ERP test result may be mistaken for proof that a UWS patient truly is unresponsive.
Asunto(s)
Coma Postraumatismo Craneoencefálico/fisiopatología , Potenciales Relacionados con Evento P300/fisiología , Potenciales Evocados Auditivos/fisiología , Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Adulto JovenRESUMEN
A multicenter randomized controlled trial of patients with severe traumatic brain injury who received therapeutic hypothermia or fever control was performed from 2002 to 2008 in Japan (BHYPO). There was no difference in the therapeutic effect on traumatic brain injury between the two groups. The efficacy of hypothermia treatment and the objective of the treatment were reexamined based on a secondary analysis of the BHYPO trial in 135 patients (88 treated with therapeutic hypothermia and 47 with fever control). This analysis was performed to examine clinical outcomes according to the CT classification of the Traumatic Coma Data Bank on admission. Clinical outcomes were evaluated with the Glasgow Outcome Scale and mortality at 6 months after injury. Good recovery and moderate disability were defined as favorable outcomes. Favorable outcomes in young patients (≤50 years old) with evacuated mass lesions significantly increased from 33.3% with fever control to 77.8% with therapeutic hypothermia. Patients with diffuse injury III who were treated with therapeutic hypothermia, however, had significantly higher mortality than patients treated with fever control. It was difficult to control intracranial pressure with hypothermia for patients with diffuse injury III, but hypothermia was effective for young patients with an evacuated mass lesion.