Cases Of Brain Injury Research Articles

Awakening: Predicting external stimulation to force transitions between different brain states

A fundamental problem in systems neuroscience is how to force a transition from one brain state to another by external driven stimulation in, for example, wakefulness, sleep, coma, or neuropsychiatric diseases. This requires a quantitative and robust definition of a brain state, which has so far proven elusive. Here, we provide such a definition, which, together with whole-brain modeling, permits the systematic study in silico of how simulated brain stimulation can force transitions between different brain states in humans. Specifically, we use a unique neuroimaging dataset of human sleep to systematically investigate where to stimulate the brain to force an awakening of the human sleeping brain and vice versa. We show where this is possible using a definition of a brain state as an ensemble of "metastable substates," each with a probabilistic stability and occurrence frequency fitted by a generative whole-brain model, fine-tuned on the basis of the effective connectivity. Given the biophysical limitations of direct electrical stimulation (DES) of microcircuits, this opens exciting possibilities for discovering stimulation targets and selecting connectivity patterns that can ensure propagation of DES-induced neural excitation, potentially making it possible to create awakenings from complex cases of brain injury.

Starting Neurotrauma Facilities at the All India Institute of Medical Sciences Rishikesh

AbstractIt is said that making a start is half the job done. The same can be said for starting a new institute, a new department, or a new facility. Neurotrauma at the All India Institute of Medical Sciences (AIIMS) Rishikesh made humble beginnings in June 2016 when a patient with L1 compression burst fracture with paraparesis with urinary retention presented to the Outpatient Department and underwent surgery. The neurotrauma facilities at the institute got a major push with the beginning of emergency and trauma services in June 2017. The Department of Neurosurgery at AIIMS Rishikesh takes up cases of traumatic brain injuries, spinal injuries, and peripheral nerve injuries.

Karakteristik pasien cedera kepala di Rumah Sakit Umum Daerah (RSUD) Umbu Rara Meha Waingapu periode 1 Januari 2017 – 31 Desember 2018

Background: Traumatic Brain Injury is among the leading causes of mortality and morbidity in the world, with the increase of incidence rate every year especially in the developing country concomitant with the rise in motor vehicle usage. In Indonesia, although the number is high, the study concerning the incidence and characteristic of patients with traumatic brain injury are still limited. This study has objective to show the characteristic pattern of traumatic brain injury cases at Umbu Rara Meha general hospital that, as the biggest hospital in Sumba Island, can be the representative for the area.Method: This study is a descriptive study with a retrospective design using the medical record in Umbu Rara Meha general hospital from January 1st until December 31th as secondary data. A non-probability sampling technique using consecutive was conducted. Data were analyzed using SPSS version 25 and depicted in mean, median, frequency, and percentage. Result: A total of 186 cases was included and from there it is shown that the highest prevalence rate of traumatic brain injury was in males (67,7%), and was dominated by the adolescence group (25,3%), although by occupation the highest rate was farmer and fisherman (32,3%). The leading cause of traumatic brain injury is an accident (82,2%) with mild traumatic brain injury (67,7%) as the most frequent type of severity. The average length of stay for traumatic brain injury was two days.Conclusion: The high number of the incidence rate of traumatic brain injury mainly from the accident and on adolescence group can be used as a reference for the local government or related institution to look more carefully about the awareness of safe driving or riding among the society and can be implemented through a program or other governing instrument.

Biomimetic Strategies To Treat Traumatic Brain Injury by Leveraging Fibrinogen.

There were over 27 million new cases of traumatic brain injuries (TBIs) in 2016 across the globe. TBIs are often part of complicated trauma scenarios and may not be diagnosed initially because the primary clinical focus is on stabilizing the patient. Interventions used to stabilize trauma patients may inadvertently impact the outcomes of TBIs. Recently, there has been a strong interest in the trauma community toward administrating fibrinogen-containing solutions intravenously to help stabilize trauma patients. While this interventional shift may benefit general trauma scenarios, fibrinogen is associated with potentially deleterious effects for TBIs. Here, we deconstruct what components of fibrinogen may be beneficial as well as potentially harmful following TBI and extrapolate this to biomimetic approaches to treat bleeding and trauma that may also lead to better outcomes following TBI.

Cerebral microbleed detection using Susceptibility Weighted Imaging and deep learning

Detecting cerebral microbleeds (CMBs) is important in diagnosing a variety of diseases including dementia, stroke and traumatic brain injury. However, manual detection of CMBs can be time-consuming and prone to errors, whereas the current automatic algorithms for CMB detection are usually limited by large number of false positives. In this study, we present a two-stage CMB detection framework which contains a candidate detection stage based on a 3D fast radial symmetry transform of the composite images from Susceptibility Weighted Imaging (SWI), and a false positive reduction stage based on deep residual neural networks using both the SWI and the high-pass filtered phase images. While the SWI images provide exquisite sensitivity to the presence of blood products, the high-pass filtered phase images enable the differentiation of diamagnetic calcifications from paramagnetic microbleeds. The deep learning model was trained using 154 data sets, and the best models were selected using 25 validation data sets. Finally, the models were tested using 41 cases, including 13 hemodialysis cases, 9 traumatic brain injury cases, 9 stroke cases and 10 healthy controls. Using 3D SWI and high-pass filtered phase images as input, the best model led to a sensitivity of 95.8%, a precision of 70.9%, and 1.6 false positives per case. This model achieved similar performance to the most experienced human rater and outperformed recently reported CMB detection methods. This study demonstrates the potential of applying deep learning techniques to medical imaging for improving efficiency and accuracy in diagnosis.

Cerebral Microbleeds Temporarily Become Less Visible or Invisible in Acute Susceptibility Weighted Magnetic Resonance Imaging: A Rat Study

Previously, we reported human traumatic brain injury cases demonstrating acute to subacute microbleed appearance changes in susceptibility-weighted imaging (SWI—magnetic resonance imaging [MRI]). This study aims to confirm and characterize such temporal microbleed appearance alterations in an experimental model. To elicit microbleed formation, brains of male Sprague Dawley rats were pierced in a depth of 4 mm, in a parasagittal position bilaterally using 159 μm and 474 μm needles, without the injection of autologous blood or any agent. Rats underwent 4.7 T MRI immediately, then at multiple time points until 125 h. Volumes of hypointensities consistent with microbleeds in SWI were measured using an intensity threshold-based approach. Microbleed volumes across time points were compared using repeated measures analysis of variance. Microbleeds were assessed by Prussian blue histology at different time points. Hypointensity volumes referring to microbleeds were significantly decreased (corrected p < 0.05) at 24 h compared with the immediate or the 125 h time points. By visual inspection, microbleeds were similarly detectable at the immediate and 125 h imaging but were decreased in extent or completely absent at 24 h or 48 h. Histology confirmed the presence of microbleeds at all time points and in all animals. This study confirmed a general temporary reduction in visibility of microbleeds in the acute phase in SWI. Such short-term appearance dynamics of microbleeds should be considered when using SWI as a diagnostic tool for microbleeds in traumatic brain injury and various diseases.

Psychometric Evaluation of Anxiety, Depression, and Sleep Quality after a Mild Traumatic Brain Injury: A Longitudinal Study.

Introduction. Over 1 million mild traumatic brain injury (mTBI) cases are reported annually worldwide and may result in cognitive, physical, and emotional deterioration; depression; anxiety; and sleep problems. However, studies on long-term mTBI effects are limited. This study included 440 patients, and regular follow-ups of psychological assessments were performed for 2 years. Four questionnaires, including the Pittsburgh sleep quality index (PSQI), Epworth sleepiness scale (ESS), Beck's anxiety inventory (BAI), and Beck's depression inventory (BDI), were used to evaluate sleep problems, daytime sleepiness, anxiety, and depression, respectively. Results show that BAI and BDI scores considerably improved at the 6th-week, 1st-year, and 2nd-year follow-ups compared to baseline, yet these remained significantly different. In addition, anxiety and depression were prominent symptoms in a select subgroup of patients with poor initial evaluations, which improved over the 2 years. However, the ESS and PSQI scores fluctuated only mildly over the same time span. In conclusion, the mTBI patients showed a gradual improvement of anxiety and depression over the 2 years following injury. While anxiety and depression levels for mTBI patients in general did not return to premorbid status, improvements were observed. Sleep disorders persisted and were consistent with initial levels of distress.

Analysis of early treatment of multiple injuries combined with severe pelvic fracture

PurposeTo summarize and analyze the early treatment of multiple injuries combined with severe pelvic fractures, especially focus on the hemostasis methods for severe pelvic fractures, so as to improve the successful rate of rescue for the fatal hemorrhagic shock caused by pelvic fractures. MethodsA retrospective analysis was conducted in 68 cases of multiple trauma combined with severe pelvic fractures in recent 10 years (from Jan. 2006 to Dec. 2015). There were 57 males and 11 females. Their age ranged from 19 to 75 years, averaging 42 years. Causes of injury included traffic accidents in 34 cases (2 cases of truck rolling), high falling injuries in 17 cases, crashing injuries in 15 cases, steel cable wound in 1 case, and seat belt traction injury in 1 case. There were 31 cases of head injury, 11 cases of chest injury, 56 cases of abdominal and pelvic injuries, and 37 cases of spinal and limb injuries. Therapeutic methods included early anti-shock measures, surgical hemostasis based on internal iliac artery devasculization for pelvic hemorrhage, and early treatment for combined organ damage and complications included embolization and repair of the liver, spleen and kidney, splenectomy, nephrectomy, intestinal resection, colostomy, bladder ostomy, and urethral repair, etc. Patients in this series received blood transfusion volume of 1200–10,000 mL, with an average volume of 2850 mL. Postoperative follow-up ranged from 6 months to 1.5 years. ResultsThe average score of ISS in this series was 38.6 points. 49 cases were successfully treated and the total survival rate was 72.1%. Totally 19 patients died (average ISS score 42.4), including 6 cases of hemorrhagic shock, 8 cases of brain injury, 1 case of cardiac injury, 2 cases of pulmonary infection, 1 case of pulmonary embolism, and 1 case of multiple organ failure. Postoperative complications included 1 case of urethral stricture (after secondary repair), 1 case of sexual dysfunction (combined with urethral rupture), 1 case of lower limb amputation (femoral artery thrombosis), and 18 cases of consumptive coagulopathy. ConclusionThe early treatment of multiple injuries combined with severe pelvic fractures should focus on pelvic hemostasis. Massive bleeding-induced hemorrhagic shock is one of the main causes of poor prognosis. The technique of internal iliac artery devasculization including ligation and embolization can be used as an effective measure to stop or reduce bleeding. Consumptive coagulopathy is difficult to deal with, which should be detected and treated as soon as possible after surgical measures have been performed. The effect of using recombinant factor VII in treating consumptive coagulopathy is satisfactory.

Speech and Language Dysfunctions in Patients with Cerebrocortical Disorders Admitted in a Neurosurgical Unit.

Introduction:Speech and language abnormality among brain injury patients are common, especially during the acute stage. The details of same from Andhra Pradesh (AP) state are limited. The present study provides details of speech and language abnormality among brain damage patients, from a tertiary care hospital AP.Materials and Methods:This study was conducted at tertiary care hospital, Nellore, AP. Patients with acute brain damage due to traumatic brain injury (TBI), cerebrovascular accident (CVA), and postoperative cases of brain tumors were selected for the study. Detail of speech and language disturbances was accessed using Western Aphasia Battery. All patients were right-handed and Telugu was their first language.Results:There were totally 38 patients, of them 28 had TBI, 8 patients were postoperative cases of brain tumor, and 2 cases were of CVA. The mean age was 45.6 years. A total of 22 patients were literate. TBI patients with left cerebral hemisphere damage manifested with anomic, conduction, transcortical sensory, global, and Wernicke's aphasia. Four patients of postoperative brain tumor manifested with anomic and transcortical sensory aphasia had left-sided brain damage and mild dysarthria had right-sided brain damage patient. CVA patients had anomic aphasia and subcortical aphasia having right and left cerebral hemisphere damage, respectively.Conclusions:This study reports that acute brain damage due to various causes manifest with speech and language abnormality, especially when the left cerebral hemisphere is involved.

Clinical practice guidelines for the provision of renal service in Hong Kong: General Nephrology.

Clinical practice guidelines for the provision of renal service in Hong Kong: General Nephrology.

Transabdominal Functional Magnetic Stimulation for the Treatment of Constipation in Brain-Injured Patients: A Randomized Controlled Trial.

ObjectiveTo investigate the effects of the transabdominal functional magnetic stimulation (A-FMS) for constipation in stroke or brain-injured patients.MethodsTwenty-four brain-injured patients (11 males and 13 females; median age, 65 years; 22 cases of stroke and 2 cases of traumatic brain injury) with constipation, who were admitted to the rehabilitation department, were enrolled and randomly divided into magnetic stimulation (MS) group and sham stimulation (Sham) group. Several parameters related with constipation such as total and segmental colon transit time (CTT), defecation frequency, and Bristol Stool Scale (BSS) before and after 2 weeks of A-FMS (5 times per week, total 10 times of A-FMS) were evaluated. The Korean version of the Modified Barthel Index (K-MBI) was also evaluated.ResultsA significant decrease in segmental CTT in the left colon (-8.2±3.9 vs. 4.1±2.5 hours; p<0.05 by paired sample t-test) and a significant increase in the frequency of defecation (1.5±0.2 vs 0.7±0.3; p<0.05 by paired sample t-test) were observed in the MS group compared with the Sham group. Stool hardness became significantly softer in the MS group compared with the Sham group (2.3–3.5 in the MS and 2.6–3.1 in the Sham; p<0.05 by chi-square test) as evaluated by BSS. No difference in the K-MBI was observed between the two groups.ConclusionThe present study suggests that A-FMS can be an additional therapeutic tool for managing constipation in brain-injured patients with abnormal bowel movement, defecation frequency, and stool hardness.

Caregivers' Perspectives on the Slight Recovery of Oral Intake of Home-Dwelling Patients Living With a Percutaneous Endoscopic Gastrostomy Tube: A Qualitative Study Using Focus Group Interviews.

Swallowing rehabilitation for patients living with a percutaneous endoscopic gastrostomy (PEG) tube for home enteral nutrition (HEN) is poorly documented, and the quality of caregivers' daily lives is also unknown. A qualitative study based on constant comparative analysis was conducted. The study subjects were the caregivers of acquired brain injury survivors residing at home and living with a PEG tube for HEN who had recovered slight oral intake because of swallowing rehabilitation. Interviews were transcribed into anonymous transcripts and analyzed using inductive qualitative analysis. After 2 researchers performed the initial analysis, related concepts were extracted using matrix-based methods. Finally, an audit was conducted to verify the consistency between the data and extracted concepts. Of the 22 caregivers (17 stroke cases and 5 traumatic brain injury cases), 21 were female and 1 was male. The psychological impact on caregivers' daily lives because of the patients' slight recovery of oral intake consisted of 4 concepts: (1) reconstructing and/or strengthening a sense of family belonging, (2) combining oral intake and other rehabilitation, (3) reducing the burden of providing care, and (4) relieving social isolation. Additionally, the evaluation of swallowing function using video endoscopy at every visit led to compliance with eating safety to fit patients' swallowing ability. Slight recovery of patients' oral intake changed the daily lives of emotionally overwhelmed caregivers. The evaluation of swallowing disabilities using video endoscopy for patients with a PEG tube for HEN may reveal recovery of eating function and increase compliance with eating safety.

Chronic treatment with galantamine rescues reversal learning in an attentional set-shifting test after experimental brain trauma

Approximately 10 million new cases of traumatic brain injury (TBI) are reported each year worldwide with many of these injuries resulting in higher order cognitive impairments. Galantamine (GAL), an acetylcholine esterase inhibitor (AChEI) and positive allosteric modulator of nicotinic acetylcholine receptors (nAChRs), has been reported to ameliorate cognitive deficits after clinical TBI. Previously, we demonstrated that controlled cortical impact (CCI) injury to rats resulted in significant executive function impairments as measured by the attentional set-shifting test (AST), a complex cognitive task analogous to the Wisconsin Card Sorting Test (WCST). We hypothesized that chronic administration of GAL would normalize performance on the AST post-TBI. Isoflurane-anesthetized adult male rats were subjected to moderate CCI (2.8 mm tissue deformation at 4 m/s) or sham injury. Rats were then randomized into one of three treatment groups (i.e., 1 mg/kg GAL, 2 mg/kg GAL, or 1 mL/kg saline vehicle; VEH) or their respective sham controls. GAL or VEH was administered intraperitoneally daily commencing 24 hours post-surgery and until AST testing at 4 weeks post-injury. The AST data revealed significant impairments in the first reversal stage after TBI, seen as increased trials to reach criterion and elevated total errors (p < 0.05). These behavioral flexibility deficits were equally normalized by the administration of both doses of GAL (p < 0.05). Additionally, the higher dose of GAL (2 mg/kg) also significantly reduced cortical lesion volume compared to TBI + VEH controls (p < 0.05). In summary, daily GAL administration provides an efficacious treatment for cognitive deficits and histological recovery after experimental brain trauma. Clinically, these findings are promising considering robust results were attained using a pharmacotherapy already used in the clinic to treat mild dementia.

Hyperbaric oxygen therapy in traumatic brain injury cases

Hyperbaric oxygen therapy in traumatic brain injury cases

Retrospective study to see the spectrum of traumatic brain injury cases at GDMC, Dehradun

Retrospective study to see the spectrum of traumatic brain injury cases at GDMC, Dehradun

Neurotrauma Care Delivery in a Limited Resource Setting—Lessons Learned From Referral and Patient Flow in a Tertiary Care Center

With the increasing population, motorization, and road traffic accidents, neurotrauma has been increasing in India. Inadequate triage and underusage of locally available resources at all healthcare levels has led to nonuniform neurotrauma care delivery. We present our experience at a tertiary care hospital. We evaluated the referral pattern of mild traumatic brain injury (mTBI) cases to enable adequate care to patients with moderate and severely injured TBI. All patients with head injury (n= 3891) referred to the emergency department of our institution during a 4-month period were evaluated. The demographic characteristics, ambulance usage, and time management during in-hospital patient flow were evaluated using the Lean Six Sigma approach. We have also provided solutions for optimal usage of available resources. Patients with mTBI comprised 77% of head injury referrals. Of all the patients referred from peripheral hospitals, 48% had normal head computed tomography (CT) scan findings. The CT waiting and lead (arrival-to-discharge) times were 35 ± 44 minutes and 114 minutes, respectively. No clinical to radiological correlation was found between the head CT scan findings and a decision to refer a patient to our institute. Only 10% of the patients with abnormal head CT scans (41%) required neurosurgical intervention. The mean duration from CT imaging to the initiation of surgery was 192.7 ± 172.1 minutes. Most of the patients with mTBI were referred to a tertiary care center, leading to secondary overtriage and overburdening of the existing resources at a specialized care hospital, possibly owing to ineffective triage at the primary and secondary healthcare centers. This would limit the adequate management of moderate to severe TBI cases in such a hospital.

Correlation between cerebral co-oximetry (rSO2) and outcomes in traumatic brain injury cases: A prospective, observational study

BackgroundTraumatic brain injury (TBI) is known to be an important reason for the increase in disabilities and deaths worldwide. Studies have demonstrated that brain tissue oxygen (PO2) monitoring reduces mortality significantly but is a invasive method of monitoring. Therefore, there is a need to monitor cerebral ischemia in TBI by noninvasive methods. The study aims to correlate cerebral co-oximetry and possible outcomes in patients with TBI. MethodsThe study included 78 patients with TBI admitted in intensive care unit (ICU) with glascow coma scale (GCS) of 8 or less than 8. Near-infrared spectroscopy monitor is applied to the patients immediately after admission to ICU; readings are noted every 4 hours up to first 48 hours, and outcomes studied as survival or neurological deficit are noted at 28 days. ResultsA total of 12 (15.4%) deaths were seen in this study. Survived patients were further divided into good recovery 33 (42.3%), moderate disability 21(26.9%), major disability 8 (10.3%), and persistent vegetative state 4 (5.1%). The rSO2 values in surviving patients were ranging from mean of 60.74% (standard deviation [SD] 4.38) to a mean of 64.98% (SD 5.01), and the mean rSO2 values in patients who died were ranging from a mean of 52.17% (SD 4.11) to a mean of 37.17% (SD 12.48). Lower rSO2 values were correlating significantly with worse neurological outcome or death by using two independent sample t-test (p < 0.001). ConclusionCerebral co-oximetry is a simple noninvasive method for predicting the outcomes in TBI and can be used to guide the management of these patients.

Biomarkers in traumatic brain injury (TBI): a review.

Biomarkers can be broadly defined as qualitative or quantitative measurements that convey information on the physiopathological state of a subject at a certain time point or disease state. Biomarkers can indicate health, pathology, or response to treatment, including unwanted side effects. When used as outcomes in clinical trials, biomarkers act as surrogates or substitutes for clinically meaningful endpoints. Biomarkers of disease can be diagnostic (the identification of the nature and cause of a condition) or prognostic (predicting the likelihood of a person’s survival or outcome of a disease). In addition, genetic biomarkers can be used to quantify the risk of developing a certain disease. In the specific case of traumatic brain injury, surrogate blood biomarkers of imaging can improve the standard of care and reduce the costs of diagnosis. In addition, a prognostic role for biomarkers has been suggested in the case of post-traumatic epilepsy. Given the extensive literature on clinical biomarkers, we will focus herein on biomarkers which are present in peripheral body fluids such as saliva and blood. In particular, blood biomarkers, such as glial fibrillary acidic protein and salivary/blood S100B, will be discussed together with the use of nucleic acids (eg, DNA) collected from peripheral cells.

Accuracy of Administrative Health Data for Surveillance of Traumatic Brain Injury: A Bayesian Latent Class Analysis.

Traumatic brain injury surveillance provides information for allocating resources to prevention efforts. Administrative data are widely available and inexpensive but may underestimate traumatic brain injury burden by misclassifying cases. Moreover, previous studies evaluating the accuracy of administrative data surveillance case definitions were at risk of bias by using imperfect diagnostic definitions as reference standards. We assessed the accuracy (sensitivity/specificity) of traumatic brain injury surveillance case definitions in administrative data, without using a reference standard, to estimate incidence accurately. We used administrative data from a 25% random sample of Montreal residents from 2000 to 2014. We used hierarchical Bayesian latent class models to estimate the accuracy of widely used traumatic brain injury case definitions based on the International Classification of Diseases, or on head radiologic examinations, covering the full injury spectrum in children, adults, and the elderly. We estimated measurement error-adjusted age- and severity-specific incidence. The adjusted traumatic brain injury incidence was 76 (95% CrI = 68, 85) per 10,000 person-years (underestimated as 54 [95% CrI = 54, 55] per 10,000 without adjustment). The most sensitive case definitions were radiologic examination claims in adults/elderly (0.48; 95% CrI = 0.43, 0.55 and 0.66; 95% CrI = 0.54, 0.79) and emergency department claims in children (0.45; 95% CrI = 0.39, 0.52). The most specific case definitions were inpatient claims and discharge abstracts (0.99; 95% CrI = 0.99, 1.00). We noted strong secular trends in case definition accuracy. Administrative data remain a useful tool for conducting traumatic brain injury surveillance and epidemiologic research when measurement error is adjusted for.

Acute Inpatient Rehabilitation Management Following Lightning Strike: Pediatric Acquired Brain Injury Case Study

To describe a case of lightening strike in a teenage patient, his rehabilitation course, and measures of functional recovery.