Epilepsy & behavior : E&B
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Epilepsy & behavior : E&B · Feb 2007
Seizures during intracarotid methohexital and amobarbital testing.
Methohexital and amobarbital have been used as agents for Wada testing in the presurgical evaluation of patients with epilepsy. Previous experience with methohexital as an anesthetic indicates that methohexital may decrease seizure threshold and may trigger seizures. ⋯ Patients with a previous history of epilepsy may be at higher risk for seizures after methohexital injection as compared with amobarbital injection.
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Epilepsy & behavior : E&B · Nov 2006
Clinical TrialDisfluent speech in patients with partial epilepsy: beneficial effect of levetiracetam.
The aim of this study was to evaluate the clinical effects of levetiracetam (LEV) in patients with partial epilepsy and disfluent speech. ⋯ As an add-on therapy, LEV seems to improve verbal fluency in patients with partial epilepsy and disfluent speech. This effect seems unrelated to the antiepileptic activity of the drug. A placebo-controlled trial of LEV in patients with this kind of verbal disfluency is warranted.
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Epilepsy & behavior : E&B · Sep 2006
Comparative StudyClinical characteristics of psychogenic nonepileptic seizure status in the long-term monitoring unit.
Patients with psychogenic nonepileptic seizures (PNES) mimicking status epilepticus (PNES-status) are at risk of iatrogenic complications. Our aim was to assess whether the population of patients with PNES who develop PNES-status are distinguishable. Retrospectively, we identified patients with PNES-status and compared them with patients with PNES without status and with patients with electroclinical status epilepticus (SE). ⋯ Use of fewer than three antiepileptic drugs and emergent admission were independent predictors of PNES-status classification on logistic regression. Of 154 patients with epilepsy, 8 had SE during LTM (5.2%), significantly fewer than the proportion with PNES-status relative to PNES (P=0.008); the only clinical variable distinguishing these two groups was a baseline lower seizure frequency among the patients with epileptic seizures (P=0.045). Our results suggest that patients with PNES-status have features that differentiate them from patients with PNES without status and, to a lesser extent, from patients with epileptic seizures.
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Epilepsy & behavior : E&B · Aug 2006
The Portuguese version of the Epilepsy Surgery Inventory (ESI-55): cross-cultural adaptation and evaluation of psychometric properties.
The purpose of this study was to develop a Portuguese version of the Epilepsy Surgery Inventory (ESI-55) and to assess its psychometric properties. Sixty patients with temporal lobe epilepsy related to unilateral mesial temporal sclerosis who underwent presurgical evaluation at the Universidade Federal de São Paulo (UNIFESP) formed the sample for this study. The psychometric properties of the ESI-55 included: reliability, validity, and responsiveness. ⋯ There was a high correlation between seizure frequency and ESI-55 domains for clinical variables (ANOVA, P<0.005). Surgical treatment in this series improved health-related quality of life in the seizure-free group in three domains--Health Perception (1.24), Emotional Well-Being (1.32), and Energy/Fatigue (1.48)-as reflected by the standard response mean and the effect size of the sample. Our results support the psychometric properties of the Portuguese version of the ESI-55 as a measure of health-related quality of life.
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Epilepsy & behavior : E&B · Aug 2006
ReviewFinding the missing link between ictal bradyarrhythmia, ictal asystole, and sudden unexpected death in epilepsy.
Basic science studies of the human brain have supported the cortical representation of cardiovascular responses, including heart rate variability. Clinical observations of ictal bradyarrhythmia may be mechanistically explained by the influence of the central autonomic network, although the localization and lateralization issues need to be considered in the light of patterns of seizure spread, hand dominance, and presence of lesions. ⋯ The missing links are (1) clinical evidence of common factors shared by patients with ictal bradyarrhythmia and patients who die from SUDEP, (2) evidence of arrhythmia as a risk factor for SUDEP from epidemiological studies, and, (3) determination of the importance of ictal bradyarrhythmia in SUDEP with respect to other proposed mechanisms including apnea and intrinsic cardiac abnormalities. There remains a need to review the seizure mechanisms in cases of SUDEP and to step up the amount of concurrent ECG/intracranial EEG analysis in both ictal bradyarrhythmia and SUDEP cases.