277 results match your criteria: "EEG Triphasic Waves"
CEN Case Rep
December 2024
Department of Nephrology and Hypertension, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan.
Ceftriaxone is widely used clinically but it can potentially cause ceftriaxone encephalopathy in individuals who are on dialysis. We describe ceftriaxone encephalopathy in a dialysis patient. The 87-year-old Japanese woman had a 9-year dialysis history.
View Article and Find Full Text PDFActas Esp Psiquiatr
October 2024
Department of Pediatrics, West China Second University Hospital, Sichuan University, 610017 Chengdu, Sichuan, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, 610017 Chengdu, Sichuan, China.
Background: Triphasic waves (TWs) on electroencephalograms (EEGs) have predominantly been observed in adults, often associated with Creutzfeldt‒Jakob disease and metabolic encephalopathy. However, TWs have also been linked to various nonmetabolic and structural abnormalities. Additionally, reports of TWs in children are rare.
View Article and Find Full Text PDFArq Neuropsiquiatr
November 2024
Universidade Federal do Paraná, Complexo Hospital de Clínicas, Departamento de Neurofisiologia, Curitiba PR, Brazil.
J Investig Med High Impact Case Rep
July 2024
Joan Edwards School of Medicine, Huntington, WV, USA.
Crit Care
May 2024
APHP, Department of Intensive Care Medicine, Bichat-Claude Bernard University Hospital, 46 rue Henri Huchard, 75018, Paris, France.
Introduction: Prognostication of outcome in severe stroke patients necessitating invasive mechanical ventilation poses significant challenges. The objective of this study was to assess the prognostic significance and prevalence of early electroencephalogram (EEG) abnormalities in adult stroke patients receiving mechanical ventilation.
Methods: This study is a pre-planned ancillary investigation within the prospective multicenter SPICE cohort study (2017-2019), conducted in 33 intensive care units (ICUs) in the Paris area, France.
Epilepsia
July 2024
Department of Neurology, Johns Hopkins Bayview Medical Center, Baltimore, Maryland, USA.
In the case of suspicion of nonconvulsive status epilepticus (NCSE), reactivity on electroencephalograms (EEGs) can provide valuable diagnostic information. Reactivity refers to responses to auditory or somatosensory stimulation, with changes in amplitude and frequency of background activity. Because of self-perpetuating processes and the failure of self-terminating mechanisms, status epilepticus is unlikely to cease when patients spontaneously move, and it cannot typically be stopped by external stimulation (i.
View Article and Find Full Text PDFFront Neurol
March 2024
Department of Neurology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
Objective: We present the case of a patient with clinical and imaging features of sporadic Creutzfeldt-Jakob disease (sCJD) and positive IgLON5 antibodies (Abs) in the serum and CSF.
Case Report: A 66-year-old Chinese man presented to the hospital with a stroke-like episode, followed by rapidly progressive cognitive decline, mutism, and parkinsonism. The MRI results showed a cortical ribboning sign in diffusion-weighted MRI, periodic triphasic waves with a slow background in EEG, and positive protein 14-3-3 in CSF.
Clin Neurol Neurosurg
May 2024
Department of Neurology, All India Institute of Medical Sciences, Jodhpur, India. Electronic address:
Neurophysiol Clin
July 2024
Service de Physiologie Clinique-Explorations Fonctionnelles, DMU DREAM, APHP, Hôpital Lariboisière, F-75010, Paris, France; Université Paris Cité, INSERM UMR-S 1144, F-75006, Paris, France. Electronic address:
Objectives: Acute confusional state (ACS) is a common cause of admission to the emergency department (ED). It can be related to numerous etiologies. Electroencephalography (EEG) can show specific abnormalities in cases of non-convulsive status epilepticus (NCSE), or metabolic or toxic encephalopathy.
View Article and Find Full Text PDFSeizure
April 2024
Section of Clinical Neurophysiology, Department of Neurology, La Paz University Hospital, Paseo de la Castellana, 261, Madrid 28046, Spain.
Background Sporadic Creutzfeldt-Jakob disease (CJD), the most common form of human prion disease, is the archetypal diagnosis in this category. However, the spectrum of possible diagnoses is wide, encompassing various treatable conditions. A lack of standardized diagnostic criteria and a tendency to opt for brain biopsies and clinical autopsies can be limiting factors in reaching a conclusive diagnosis.
View Article and Find Full Text PDFCrit Care
October 2023
INSERM UMR 1137, Université Paris Cité, 75018, Paris, France.
Sepsis-associated encephalopathy is a severe neurologic syndrome characterized by a diffuse dysfunction of the brain caused by sepsis. This review provides a concise overview of diagnostic tools and management strategies for SAE at the acute phase and in the long term. Early recognition and diagnosis of SAE are crucial for effective management.
View Article and Find Full Text PDFComput Methods Programs Biomed
December 2023
IRCCS Ospedale Policlinico San Martino, Department of Neuroscience, Division of Clinical Neurophysiology and Epilepsy Centre, Genova, Italy.
Objective: assess the effectiveness of a new method for classifying EEG recording features through the use of tags within reports. We present feature prevalence in a sample of patients with toxic-metabolic encephalopathy and discuss the advantages of this approach over existing classification systems.
Methods: during EEG report creation, tags reflecting background activity, epileptiform features and periodic discharges were selected according to the findings of each recording.
J Neurol
October 2023
Epilepsy and EEG Unit, Johns Hopkins Bayview Medical Center, Baltimore, MD, USA.
Historically, periodic EEG patterns were described as any pattern with stereotyped paroxysmal complexes occurring at regular intervals, i.e., the period (T).
View Article and Find Full Text PDFJ Clin Neurophysiol
November 2022
Department of Neurology, Johns Hopkins Bayview Medical Center, Baltimore, Maryland, U.S.A.
J Clin Neurophysiol
November 2022
Department of Neurology, 12 de Octubre University Hospital, Madrid, Spain.
Case Rep Neurol
May 2022
Department of Neurology, SUNY Downstate Health Sciences University, New York, New York, USA.
Although mRNA vaccine responses following previous coronavirus disease 2019 (COVID-19) infection have not been assessed in trials, it has been shown that serological evidence of previous COVID-19 generates strong humoral and cellular responses to one dose of mRNA vaccine. We describe a patient with prior COVID-19 infection who developed acute transient encephalopathy with elevated inflammatory markers within 24 h of her first injection of Moderna COVID-19 vaccine. A 69-year-old cognitively normal woman presented with intermittent inattention, disorientation, left/right confusion, weakness, gait instability, and decreased speech.
View Article and Find Full Text PDFCase Rep Crit Care
March 2022
Neurophysiology Unit, Careggi University Hospital, Florence, Italy.
Baclofen withdrawal syndrome represents a clinical emergency that can lead to life-threatening complications. It is often a diagnostic challenge because of its nonspecific nature of presentation and degree of symptom overlap with other clinical diseases. Electroencephalography (EEG) might provide important supporting evidence when neurological complications are involved.
View Article and Find Full Text PDFFront Neurol
January 2022
Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Background: Triphasic waves (TWs) are mainly described in association with metabolic encephalopathy, especially hepatic encephalopathy. Now, as different conditions including non-metabolic and structural abnormalities have been reported to be associated with TWs, the presence of TWs becomes a non-specific finding for metabolic encephalopathy.
Case Presentation: We report the first case of anti-NMDAR encephalitis in a 9-year-old girl presenting with TWs on EEG.
Front Neurol
January 2022
Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
Patients with neurosyphilis present with a wide range of neurological symptoms, the response of which to penicillin is not well known. In this paper, we analyzed the clinical video-electroencephalogram (EEG) features of neurosyphilis in a 54-year-old man who exhibited with rhythmic orofacial involuntary movements, Argyll Robertson pupil, frequent paroxysmal oral-automatism seizures, periodic lateralized discharges (PLEDs) with triphasic waves, behavioral changes, and memory decline. After treatment with penicillin, PLED and seizures disappeared and behavioral changes and memory decline were significantly improved, but rhythmic orofacial involuntary movements and Argyll Robertson pupil persisted, which indicates an irreversible characteristic of late stage neurosyphilis syndromes.
View Article and Find Full Text PDFFront Neurol
September 2021
Department of Neurology, Peking University First Hospital, Beijing, China.
There are few reported cases of posterior reversible encephalopathy syndrome (PRES) combined with essential thrombocythemia (ET). We report a case of PRES-like syndrome in ET. A 60-year-old man with a history of hypertension and thrombocythemia presented with progressive visual loss after waking up; and neurological examination showed pupils were 3 mm and equally reactive to light, which suggested cortical blindness.
View Article and Find Full Text PDFJ Clin Neurophysiol
September 2021
Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, U.S.A.
Purpose: Triphasic waves arising in patients with toxic metabolic encephalopathy (TME) are often considered different from generalized periodic discharges (GPDs) in patients with generalized nonconvulsive status epilepticus (GNCSE). The primary objective of this study was to investigate whether a common mechanism can explain key aspects of both triphasic waves in TME and GPDs in GNCSE.
Method: A neural mass model was used for the simulation of EEG patterns in patients with acute hepatic encephalopathy, a common etiology of TME.
J Clin Neurophysiol
September 2021
Department of Neurology & Rehabilitation Medicine, University of Cincinnati, Cincinnati, Ohio, U.S.A.
Triphasic waves are intuitively distinctive waveforms that fall under the umbrella of generalized periodic discharges. The ability to distinguish these waveforms consistently could be helpful if a specific underlying pathophysiology could be identified. However, scalp EEG and clinical observation have been limited in their ability to elucidate the underlying cortical physiology that leads to triphasic waves.
View Article and Find Full Text PDFJ Clin Neurophysiol
September 2021
Department of Neurology, Johns Hopkins Bayview Medical Center, Baltimore, Maryland, U.S.A.
The entity of triphasic waves (TWs) and TW encephalopathy has derived from the subjective art of EEG interpretation. Indeed, there are few if any guidelines regarding many different aspects of TWs. The authors seek to shed light on the nature and the diagnostic characteristics of various types of TWs, differentiating "typical" from "atypical" forms.
View Article and Find Full Text PDF