Utility Of Electroencephalography Research Articles

Cognitive impairment in multiple sclerosis: Utility of electroencephalography.

to evaluate associations between neurocognitive impairment and electroencephalography (EEG) data in Multiple Sclerosis (MS). patients aged between 18 and 65 years, diagnosed with MS accordingly to the McDonald 2017 criteria and who were in remission for at least one month were included. Cognitive functions were evaluated by validated neuropsychological tests for Tunisian population. Electroencephalography data of each patient were analysed, Grand Total EEG (GTE) score was calculated and we evaluated their statistical links with cognitive impairment. Thirty five patients were included. Slower background activity was associated with presence of: reduced information processing speed (IPS) (p=0,03), verbal memory impairment (p=0,04) and executive dysfunction (p=0,016). The score 3 of GTE (reactivity of background activity) was associated with reduced IPS (p=0,007) and executive dysfunction (p=0,014). We found a positive correlation between background activity and Tunisian Verbal Test (TVLT) (ρ =0,46; p=0,005) and Symbol Digit Modalities Test (SDMT) (ρ =0,35; p=0,03). Sensitivity of GTE score was 68,4% for executive dysfunction (cut-off=2,5) and 66,7% for reduced IPS (cut-off=2,5). Our results have shown utility of EEG in detecting cortical involvement and its correlation with cognitive impairment in MS patients. EEG could be a tool for monitoring cortical involvement during MS and predict cognitive impairment.

The Use of Electroencephalography in Patients with Sepsis: a Review of The Literature.

Sepsis-associated encephalopathy (SAE) is the term used to define brain dysfunction related to infections that are principally located outside the central nervous system (CNS). A number of published studies report that electroencephalography (EEG) has been used in the evaluation of patients with sepsis, alone or usually in combination, to evoked potentials and neuroimaging. This was in an effort to assess if EEG can be a tool in the diagnosis and monitoring of the neurological status in sepsis patients. Although there is no specific test for the diagnosis and prognosis of sepsis related encephalopathy, our literature review suggests that EEG has a role in the assessment of this clinical entity. Due to its low cost and simplicity in its performance, EEG could be a potential aid in the assessment of sepsis neurological complications even in the early, subclinical stages of the syndrome. The aim of this review is to summarize the published literature regarding the application and utility of electroencephalography in adult patients with sepsis.

Antiepileptic Drug Management in Acute Ischemic Stroke: Are Vascular Neurologists Utilizing Electroencephalograms? An Observational Cohort Study.

Introduction This study examines the utility of electroencephalography (EEG) in clinical decision making in acute ischemic stroke (AIS) patients in regards to the prescription of antiseizure medications. Methods Patients were grouped as having positive EEG (+) for epileptiform activity or negative EEG (-). These studies were no more than 30 minutes in length. Patients' charts were retrospectively reviewed for antiepileptic drug (AED) use before, during, and on discharge from AIS hospitalization. Results Of the 509 patients meeting inclusion criteria, 24 (4.7%) had a positive EEG. Patients did not significantly differ with respect to any demographic or baseline characteristics with the exception of prior history of seizure. In the EEG- group, AEDs were discontinued in only 3.5% of patients. In the EEG+ group, only 37.5% of patients had an initiation or change to their AED regimen within 36 hours of the study. 62.5% of the EEG+ group had a cortical stroke. Significance. Our results indicate that vascular neurologists are not using spot EEGs to routinely guide inpatient AED management. EEGs may have greater utility in those with a prior history of seizures and cortical strokes. Longer or continuous EEG monitoring may have better utility in the AIS population if there is clinical suspicion of seizure.

The Utility of Electroencephalography on Stroke Service: A Single Center Experience (4251)

The Utility of Electroencephalography on Stroke Service: A Single Center Experience (4251)

Role of Electroencephalography in the Diagnosis and Treatment of Neuropsychiatric Border Zone Syndromes.

Border zone disorders involve neurological disorders with psychiatric symptoms and signs as well as psychiatric disorders with soft neurological features. This becomes a cause for great diagnostic and therapeutic concerns. We, in this paper, analyzed some of the imitators such as epilepsy, dementia, some forms of encephalitis, and pure psychiatric diseases which produce problems in decision making due to soft neurological features and the utility of electroencephalography (EEG) as a simple diagnostic tool in differentiating some of these conditions from each other as well as the therapeutic role of EEG in some of these disorders. We retrospectively took index cases which produced problems for us in decision making in the last 5 years and correlated with the final diagnosis, EEG parameters as well as literature available by PubMed search using specific key words based on the conditions identified. EEG can be normal in organic diseases and abnormal in psychiatric diseases. Typical EEG findings in neuropsychiatric syndromes point to specific diagnosis. Soft EEG changes are common in psychiatric disorders and do not indicate organicity. EEG can be used to assess efficacy and toxicity of therapeutic agents in psychiatry. Biofeedback-based training to keep the brain in particular rhythm is of use in psychiatric disorders as a pharmaco-sparing agent.

Utility of Electroencephalography (EEG) during Tilt Table Evaluation for Syncope (P5.328)

Utility of Electroencephalography (EEG) during Tilt Table Evaluation for Syncope (P5.328)

Clinical utility of electroencephalography in encephalopathy

Encephalopathy is an entity characterized by temporary or permanent disorder of brain functions: memory, memorising, perception, personality disorders, psychomotoral hyperactivity, agitation, hallucination, illusion, delirium, disorientation, seizures, asterixis, myoclonismus, coma and death. Encephalopathy causes are various and electroencephalography (EEG) represents an important encephalopathy diagnostic procedures, despite low specificity. Typically, EEG manifestations of encephalopathy are loss of normal rhythms and slow diffuse brain activity. More specific patterns are: triphasic waves in hepatic or uremic encephalopathy and in Jakob–Creutzfeldt disease or tricyclic waves discharge with frontal or fronto-occipital gradient after aggressive hemodialysis. Spikes, triphasic waves, intermittent rhythmic delta activity (IRDA), localized frontally (FIRDA) may be observed in Hashimoto encephalopathy. FIRDA may be observed during episodes of hypoglucemia, hypernatremia, hepatic encephalopathy. Hyperglycemia may provoke periodic lateralized epyleptic discharges (PLEDs). PLEDs and generalized periodic epileptic discharges (GPEDs) may be observed in patients with viral encephalitis and hypoxic encephalopathy. Burst suppression pattern (BSP) in anoxic patients and electro-cortical inactivity in hypothermia are the usual signs of fatal prognosis. Specificity of EEG in encephalopathy, despite limitations, may offer clinical utility in estimation of diseases’ severity and prognosis.

Utility of Electroencephalography in the Care of Acute Ischemic Stroke Patients (P4.287)

Utility of Electroencephalography in the Care of Acute Ischemic Stroke Patients (P4.287)

Utility of electroencephalography in the pediatric emergency department.

To assess the role of electroencephalography (EEG) in the pediatric emergency department, we reviewed the records of all patients having an EEG in the pediatric emergency department of our hospital between 1995 and 1997. EEG findings, clinical presentations, and follow-up data were analyzed, and patients were distributed into three groups according to clinical presentation: group 1 included patients with new-onset seizures, group 2 included patients with known epilepsy presenting with worsening seizures and altered mentation, and group 3 comprised patients with acute confusional states. Overall, 56 patients with 57 EEGs were included. In group 1 (n = 36), 20 (55.6%) had an abnormal EEG. The risk of recurrence was much higher in children with abnormal EEGs (80% vs. 31%) (P < .01). In retrospect, among all of the patients receiving the diagnosis of epilepsy, 76% had an abnormal emergency department EEG. Four in group 2 (n = 14) and one in group 3 (n = 7) were proven to have nonconvulsive status epilepticus and were treated accordingly. No patients in group 1 had nonconvulsive status epilepticus. Ongoing seizures were promptly excluded in the remainder. The EEG directly contributed to the diagnosis in 84% of all referrals in the pediatric emergency department, either being abnormal and leading to a diagnosis of a seizure disorder or confirming low suspicion for seizures. Thus, a prompt EEG should be considered in children with new-onset seizures and unexplained altered consciousness.

Utility of Electroencephalography in the Pediatric Emergency Department

Utility of Electroencephalography in the Pediatric Emergency Department

The Utility of Electroencephalography and Cerebral Computed Tomography in Children with Mild and Moderately Severe Closed Head Injuries*

The utility of electroencephalography and computed tomography has been studied in a prospective follow-up study of 54 children with mild and moderately severe closed head injuries. EEG and CT scan were recorded in the acute phase. Furthermore the duration of coma and of post-traumatic amnesia were registrated. During a two years follow up period the presence of residual disorders in various faculties was evaluated at fixed time intervals after discharge. The data have been subjected to correlation analyses to study the relation of EEG and CT scan findings with the severity of the trauma and with the occurrence of longterm sequelae. Both the EEG and the CT scan abnormalities are found to correlate appreciably with the degree of severity and with the occurrence of, in particular, long-term sequelae in the fields of neurological disturbances and school performance. It is concluded that EEG and CT are useful diagnostic tools in children with mild and moderately severe closed head injuries.