Publications by authors named "Silvia Oddo"

Cannabidiol oil (CBD) has been approved as an antiseizure medication for the treatment of drug -resistant epilepsy in pediatric patients in 2018 for some special types of epilepsy. Since this time its use was extended to other forms of epilepsy. However, to date, there are few publications on the use of CBD in adult patients with drug-resistant focal epilepsy and psychiatric comorbidities.

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Article Synopsis
  • Functional/dissociative seizures (FDS), also known as psychogenic non-epileptic seizures (PNES), involve involuntary physical or cognitive changes and are linked to psychological trauma, particularly sexual abuse (SA).
  • In a study of 45 women with FDS, it was found that 80% had experienced trauma, and 40% specifically had a history of SA, which correlated with an earlier onset of seizures and increased risk of PTSD and suicide attempts.
  • The findings highlight the importance of recognizing the impact of sexual abuse on the mental health of women with FDS, emphasizing that mental health professionals should incorporate trauma histories into their care strategies.
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Purpose: To analyze patients with drug-resistant focal epilepsy from temporal (TLE) and extra-temporal origin (ETE) and to compare the prevalence of psychiatric comorbid disorders and impulsivity between them and a control group.

Methods: Consecutively studied patients with TLE and ETE confirmed with Video-EEG were included. Standardized psychiatric assessment was conducted using the Structured Clinical Interview for Axis I and II diagnosis of DSM-IV (SCID I-II), the Barrat-11 scale for impulsivity, and Beck inventory for depression.

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Purpose: To use computational modeling to provide a complete and logical description of the electrical and thermal behavior during stereoelectroencephalography-guided (SEEG) radiofrequency thermo-coagulation (RF-TC).

Methods: A coupled electrical-thermal model was used to obtain the temperature distributions in the tissue during RF-TC. The computer model was first validated by an model based on liver fragments and later used to study the impact of three different factors on the coagulation zone size: 1) the difference in the tissue surrounding the electrode (gray/white matter), 2) the presence of a peri-electrode gap occupied by cerebrospinal fluid (CSF), and 3) the energy setting used (power-duration).

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Article Synopsis
  • The study explored childhood environments and stress-coping strategies in three patient groups: those with functional dissociative seizures (FDS), drug-resistant epilepsy without psychiatric issues (DREnc), and drug-resistant epilepsy with psychiatric issues (DREpc).
  • Results indicated that negative maternal responses were linked to higher FDS probabilities, while chaotic family environments increased the likelihood of psychiatric comorbidity in DRE patients. Additionally, DREpc and FDS patients used different coping strategies compared to DREnc, who mainly focused on problem-solving.
  • The findings suggest that invalidating environments can predict FDS and psychiatric disorders in epilepsy, highlighting the need for psychotherapeutic interventions that address these social and psychological
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Objective: Temporal lobe epilepsy can disturb eloquent areas, affecting language. We applied a visually-mediated task to measure lateralization of language recognition in drug-resistant temporal lobe epilepsy.

Method: Patients with left ( = 26), right ( = 28) temporal lobe epilepsy and controls ( = 30) were administered the translingual lexical decision task.

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The loss of consciousness (LOC) during seizures is one of the most striking features that significantly impact the quality of life, even though the neuronal network involved is not fully comprehended. We analyzed the intracerebral patterns in patients with focal drug-resistant epilepsy, both with and without LOC. We assessed the localization, lateralization, stereo electroencephalography (SEEG) patterns, seizure duration, and the quantification of contacts exhibiting electrical discharge.

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Ictal semiology is essential to identify the epileptogenic zone (EZ), especially in drug-resistant focal epilepsy (DRE), as its accurate identification determines the surgical prognosis. Dancing is highly unusual ictal semiology, and its underlying neural networks remain somehow unclear since both temporal and frontal lobe (FL) have been implicated in its generation. We present a 21-year-old male with DRE characterized by dancing seizures.

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Cannabidiol oil (CBD) has been approved as an anti-seizure medication for the treatment of uncommon types of epilepsy, occurring in children: Dravet syndrome, Lennox-Gastaut syndrome, and Tuberous Sclerosis Complex. There are few publications in relation to use the CBD in adult patients with focal drug-resistant epilepsy. The objective of this study was to evaluate the efficacy, tolerability, safety, and quality of life, of adjuvant treatment with CBD, in adult patients with drug-resistant focal epilepsy for at least 6 months.

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Purpose: Depression and anxiety are psychiatric disorders related to chronic stress, commonly found in patients with drug-resistant epilepsy (DRE) and functional dissociative seizures (FDS). The present study compares the levels of perceived stress, resilience, and the styles of stress coping among patients with DRE (n=60), FDS (n=28), and controls (n=31).

Methods: We performed a cross-sectional study.

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Introduction: Epilepsy is closely related to daily rhythms, such as the sleep-wake cycle. The objective of this study was to evaluate the relationship between drug-resistant temporal lobe epilepsy (TLE) and the parameters related to the sleep-wake cycle, seizure time and epilepsy laterality.

Methods: Consecutive patients admitted to the video electroencephalogram unit with a diagnosis of TLE were enrolled.

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Background: Psychiatric comorbidities in patients with drug-resistant epilepsy (DRE) are frequently observed before and after epilepsy surgery. Impulsivity, defined as behaviors that are poorly conceived, are also frequent among patients with epilepsy. The aim of this study was to determine the presence of comorbid impulsivity in patients with DRE after one year of epilepsy surgery.

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Objective: The aim of this study is to explore explanatory models (EM) about epilepsy in patients with drug-resistant epilepsy (DRE) in Buenos Aires, Argentina.

Design: A qualitative approach gathered data through semi-structured interviews, oriented to gain an in-depth and contextual understanding of EM about epilepsy of patients with DRE. Data collection and analysis were followed by an inductive and interpretive approach informed by the principles of thematic analysis.

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Electrical stimulation mapping (ESM) of the brain using stereo-electroencephalography (SEEG) intracranial electrodes, also known as depth-ESM (DESM), is being used as part of the pre-surgical planning for brain surgery in drug-resistant epilepsy patients. Typically, DESM consists in applying the electrical stimulation using adjacent contacts of the SEEG electrodes and in recording the EEG responses to those stimuli, giving valuable information of critical brain regions to better delimit the region to resect. However, the spatial extension or coverage of the stimulated area is not well defined even though the precise electrode locations can be determined from computed tomography images.

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Background: Psychogenic nonepileptic seizures (PNESs) are disruptive changes in behavior without ictal correlate of epileptic activity and high prevalence of psychiatric morbidity. Differential diagnosis is difficult particularly with temporal lobe epilepsy (TLE), which is also associated with high prevalence of psychiatric comorbidity. Although video electroencephalography is the gold standard for differential diagnosis, clinical semiology analysis may help the clinician in general medical practice.

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Objective: Depressive disorders are common among about 50% of the patients with drug-resistant temporal lobe epilepsy (TLE). The underlying etiology remains elusive, but hypothalamus-pituitary-adrenal (HPA) axis activation due to changes in glucocorticoid receptor (GR) protein expression could play an important role. Therefore, we set out to investigate expression of the GR in the hippocampus, an important brain region for HPA axis feedback, of patients with drug-resistant TLE, with and without comorbid depression.

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Purpose: Changes in calbindin (CB) expression have been reported in patients with temporal lobe epilepsy (TLE) with controversial implications on hippocampal functions. The aim of this study was to determine the CB immunoreactivity in hippocampal dentate gyrus of patients who underwent epilepsy surgery for drug-resistant TLE with and without comorbid depression and/or memory deficits.

Methods: Selected hippocampal samples from patients with TLE who underwent epilepsy surgery were included.

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Article Synopsis
  • - The study aimed to explore the experiences of patients in Argentina with drug-resistant epilepsy through in-depth interviews with 20 participants, using a qualitative thematic analysis approach.
  • - Six main themes were identified: characteristics of the illness, interactions with the health system, beliefs about epilepsy, perceptions from others, self-perception, and impacts on daily activities.
  • - The findings may inform the development of psychosocial interventions tailored to this population, highlighting similarities with experiences in developed countries while also addressing unique cultural aspects, such as traditional healing practices.
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Background: Radiofrequency ablation and laser ablation are safe and effective techniques for reducing thyroid nodule volume, neck symptoms, and cosmetic complaints. Therapeutic success is defined as a nodule reduction > 50% between 6 and 12 months after the procedure, but a percentage of nodules inexplicably do not respond to thermal ablation.

Case Presentation: We describe the case of a young Caucasian woman with a solid benign thyroid nodule who refused surgery and who had undergone radiofrequency ablation in 2013.

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Objective: While many studies have reported that laser ablation (LA) for benign non-fuctioning thyroid nodules is efficacious in reducing nodular volume and neck symptoms, none have described changes in quality of life (QoL). The purpose of this study was to report post-LA changes in QoL in our cohort of patients.

Materials And Methods: Fourteen patients with benign thyroid nodules were involved in a prospective, single-center study and underwent a single session of LA.

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Purpose: To compare technique efficacy and safety of laser ablation (LA) and radiofrequency ablation (RFA) in treatment of benign thyroid nodules.

Materials And Methods: Institutional review board approval was obtained, and patients' consent was waived. 601 nodules were treated from May 2009 to December 2014 at eight centres, 449 (309 females, age 57 ± 14 years) with LA and 152 (107 females, age 57 ± 14 years) with RFA.

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Introduction: Depression is the most frequent psychiatric co-morbidity in patients with epilepsy. Lifetime prevalence of depression is reported more frequently in temporal lobe epilepsy and is estimated at 35%. This co-morbidity appears to be related with various mechanisms.

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