scholarly journals Differential Aspects of Sleep Epilepsy

Author(s):  
G. Bryan Young ◽  
Warren T. Blume ◽  
George A. Wells ◽  
Wilson C. Mertens ◽  
Suzanne Eder

ABSTRACT:A review of patients with epilepsy showed that 5.9% had seizures exclusively in sleep (ES) and 4.7% had seizures predominantly but not exclusively in sleep (PS). These groups were compared with a group (W) with seizures mainly in wakefulness. The following significant differences were obtained: 1) generalized convulsions predominated in the ES while partial seizures were more common among PS and W patients, 2) seizures occurred less frequently in the ES group, and 3) more W patients had EEGs with generalized epileptiform activity and positive family histories for epilepsy.We suggest the lower frequency of seizures in the ES group and the declining prevalence of sleep epilepsy are due to: 1) the high proportion of generalized as opposed to partial seizures in sleep and 2) more effective control of generalized seizures compared to partial seizures by modern anti-epileptic drug management.

Author(s):  
Richard Leblanc ◽  
William Feindel ◽  
Roméo Ethier

SUMMARY:Twenty-seven patients with epilepsy as the only manifestation of a cerebral AVM were seen at the MNI/MNH from 1973 to 1981. The nine females and eighteen males between the ages of fourteen and fifty-four years (Mean 25.2 years) had epilepsy for an average of 3.5 years prior to the diagnosis of AVM.Seven patients had primarily generalized seizures, ten patients had partial seizures with complex symptoms, fourteen patients had partial seizures with elementary symptoms, and thirteen patients had secondarily generalized seizures. Although there was no history of intracranial hemorrhage, seven patients had negative hemispheric signs (hemiatrophy, hemianopia, dysphasia, hemiparesis), two had impaired mentation, and two were ataxic. The EEG, normal in ten cases, showed non-epileptiform activity in six cases, and focal epileptiform activity in eleven cases. Angiographic and/or histological examination revealed eight small (less than 2 cm in diameter) and nineteen large lesions. Fifteen AVMs involved the frontal lobe, ten the temporal lobe, five the parietal lobe, and one the occipital lobe. Angiography failed to demonstrate three frontal and three temporal AVMs.Plain CT scanning demonstrated a high or low density lesion without a mass effect in sixteen cases, enlargement of the ipsilateral ventricle or Sylvian fissure in seven cases, and diffuse ventricular enlargement in three cases. CT scanning was performed after the intravenous injection of contrast material in nineteen cases and demonstrated vascular enhancement in fifteen cases and an abnormal blood vessel in six cases. Two angiographically occult AVMs demonstrated vascular enhancement with infusion CT scanning, thereby demonstrating the vascular nature of the lesion where angiography had failed to do so.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
R A Teryan ◽  
S E Serdyuk ◽  
K V Davtyan ◽  
O M Drapkina

Abstract Background Events of ictal bradycardia or asystole may be of importance in epilepsy patients showing with ictal falls and are a funder to SUDEP. With using implantable loop recorders, we can detect ictal bradycardia or asystole. And implantation of cardiac pacemakers may prevent life-threatening syncope, cardiac arrest, and disturbances. Purpose The purpose of this study is to look at how many ictal bradycardia or asystole and match with localization, types of seizure and antiepileptic drugs in a patient with hard to treat epilepsy. Methods Patients with hard to treat epilepsy were implanted loop recorders. Patients or their relations were activated loop recorder (with a special patient assistant) during or after seizure depending on the type of seizure. Results 204 patients included in the study. The mean duration of loop recording 24 months. 1168 ECG seizure were reordered of 204 patients, 494 (42%) secondary generalized seizures and 674 (58%) partial seizures. Nine patients (4%) were recorded ictal bradycardia and ictal asystole. Only four patients with ictal asystole and bradycardia take AED (antiepileptic drug) inhibit sodium channels. During seizure were recorded only 14 (1, 1%) seizure with ictal asystole and bradycardia of nine patients, 6 (42%) – with ictal asystole (5 – SA-block, 1 – AV-block), 8 (57%) – ictal bradycardia. Ten (71%) events of 14 was secondary generalized seizures, 4 (28%) - partial seizures. Five ictal asystoles recorded during secondarily generalized seizures, and only 1 partial seizure. Five ictal bradycardias reordered during secondarily generalized seizures, 3 - partial seizure. Frontal-temporal localization only 4 patients, 1 – occipital-frontal, 1 – frontal, 3 – without consistent epilepsy localization. Three patients with bilateral lateralization, 2 – left lateralization, 1 – right lateralization, 3 – without consistent epilepsy lateralization. Conclusions Ictal asystole can be problematic to diagnose because of both its under-recognition and its appearance only during seizures. In this study, we showed the most life-threatening events occurred in patients with the secondarily generalized seizures. Bradyarrhythmias can one of possible sudden unexplained death in epilepsy patients (SUDEP). No clear association was seen between ictal bradycardia/asystole and lateralization or localization of seizure onset.


2018 ◽  
Vol 9 (2) ◽  
pp. 65-70
Author(s):  
Anna M. Bank ◽  
Jong Woo Lee ◽  
Alexa N. Ehlert ◽  
Aaron L. Berkowitz

Background and Purpose: Antiepileptic drug (AED) management in patients with epilepsy who cannot take their usual oral medications is a common neurologic dilemma in the hospital setting. Strategies to maintain seizure control in patients with nil per os (NPO, nothing by mouth) diet orders include continuation of oral AEDs despite NPO nutrition orders, administration of intravenous AED(s), or temporary administration of benzodiazepines. The frequency with which these strategies are used and their effectiveness in preventing in-hospital seizures is unknown. Methods: We conducted a retrospective cohort study to determine AED management strategies and seizure frequency in hospitalized epilepsy patients with NPO diet status admitted to an academic medical center between 2001 and 2016. Clinical documentation was reviewed. Antiepileptic drug selection (medication and route of administration) and presence or absence of seizures were recorded. Results: We identified 199 admissions during which epilepsy patients had NPO diet orders. Antiepileptic drug management strategies included continuation of oral medications (50.3% of admissions), intravenous AED monotherapy (22.1%), intravenous AED polytherapy (12.6%), benzodiazepines (1.0%), holding AEDs (4.5%), or a combination (9.5%). Seizures occurred during 14 admissions. Treatment with AED polytherapy prior to admission and changing the patient’s AED regimen during admission were associated with increased odds of seizures during admission ( P = .0028; P = .0114). Conclusions: These results suggest that patients’ home oral AED regimens should be continued when possible in order to minimize the frequency of seizures during hospitalizations.


2021 ◽  
Author(s):  
Benedikt Hofmeister ◽  
Celina von Stülpnagel ◽  
Cornelia Betzler ◽  
Francesca Mari ◽  
Alessandra Renieri ◽  
...  

AbstractNicolaides–Baraitser syndrome (NCBRS), caused by a mutation in the SMARCA2 gene, which goes along with intellectual disability, congenital malformations, especially of face and limbs, and often difficult-to-treat epilepsy, is surveyed focusing on epilepsy and its treatment. Patients were recruited via “Network Therapy of Rare Epilepsies (NETRE)” and an international NCBRS parent support group. Inclusion criterion is NCBRS-defining SMARCA2 mutation. Clinical findings including epilepsy classification, anticonvulsive treatment, electroencephalogram (EEG) findings, and neurodevelopmental outcome were collected with an electronic questionnaire. Inclusion of 25 NCBRS patients with epilepsy in 23 of 25. Overall, 85% of the participants (17/20) reported generalized seizures, the semiology varied widely. EEG showed generalized epileptogenic abnormalities in 53% (9/17), cranial magnetic resonance imaging (cMRI) was mainly inconspicuous. The five most frequently used anticonvulsive drugs were valproic acid (VPA [12/20]), levetiracetam (LEV [12/20]), phenobarbital (PB [8/20]), topiramate (TPM [5/20]), and carbamazepine (CBZ [5/20]). LEV (9/12), PB (6/8), TPM (4/5), and VPA (9/12) reduced the seizures' frequency in more than 50%. Temporary freedom of seizures (>6 months) was reached with LEV (4/12), PB (3/8), TPM (1/5, only combined with PB and nitrazepam [NZP]), and VPA (4/12). Seizures aggravation was observed under lamotrigine (LTG [2/4]), LEV (1/12), PB (1/8), and VPA (1/12). Ketogenic diet (KD) and vagal nerve stimulation (VNS) reduced seizures' frequency in one of two each. This first worldwide retrospective analysis of anticonvulsive therapy in NCBRS helps to treat epilepsy in NCBRS that mostly shows only initial response to anticonvulsive therapy, especially with LEV and VPA, but very rarely shows complete freedom of seizures in this, rather genetic than structural epilepsy.


1991 ◽  
Vol 49 (3) ◽  
pp. 251-254 ◽  
Author(s):  
Walter Oleschko Arruda

The objective of this study was to establish the etiology of epilepsy in 210 chronic epileptics (110 female, 100 male), aged 14-82 years (34.2±13.3). Patients less than 10 years-old and alcoholism were excluded. All underwent neurological examination, routine blood tests, EEG and CT-scan. Twenty patients (10.5%) were submitted to spinal tap for CSF examination. Neurological examination was abnormal in 26 (12.4%), the EEG in 68 (45.5%), and CT-scan in 93 (44.3%). According to the International Classification of Epileptic Seizures (1981), 101 (48.1%) have generalized seizures, 66 (31.4%) partial seizures secondarily generalized, 25 (11.8%) simple partial and complex partial seizures, and 14 (6.6%) generalized and partial seizures. Four patients (2.0%) could not be classified. In 125 (59.5%) patients the etiology was unknown. Neurocysticercosis accounted for 57 (27.1%) of cases, followed by cerebrovascular disease 8 (3.8%), perinatal damage 5 (2.4%), familial epilepsy 4 (1.9%), head injury 4 (1.9%), infective 1 (0.5%), and miscelanea 6 (2.8%).


Cephalalgia ◽  
1983 ◽  
Vol 3 (2) ◽  
pp. 115-118 ◽  
Author(s):  
G. Lanzi ◽  
U. Balottin ◽  
A. Ottolini ◽  
F. Rosano Burgio ◽  
E. Fazzi ◽  
...  

A retrospective method was used to estimate the incidence of recurring motion-sickness, cyclic vomiting and abdominal pain considered as different manifestations of a so-called periodic syndrome in 100 migraine sufferers, 100 epileptics and 100 control subjects in the pediatric age group. Such recurrent symptoms are significantly more frequent in those suffering from migraine than in the other two groups. Examination of subgroups of patients affected by particular forms of migraine (classical and common) and of epilepsy (generalized seizures, simple partial seizures, complex partial seizures) contributed little new to our understanding of the nature of periodic syndrome. It is concluded that the above symptoms of periodic syndrome should generally be considered as manifestations of a migrainous rather than of an epileptic disorder.


2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Janne Kananen ◽  
Heta Helakari ◽  
Vesa Korhonen ◽  
Niko Huotari ◽  
Matti Järvelä ◽  
...  

Abstract Resting-state functional MRI has shown potential for detecting changes in cerebral blood oxygen level-dependent signal in patients with epilepsy, even in the absence of epileptiform activity. Furthermore, it has been suggested that coefficient of variation mapping of fast functional MRI signal may provide a powerful tool for the identification of intrinsic brain pulsations in neurological diseases such as dementia, stroke and epilepsy. In this study, we used fast functional MRI sequence (magnetic resonance encephalography) to acquire ten whole-brain images per second. We used the functional MRI data to compare physiological brain pulsations between healthy controls (n = 102) and patients with epilepsy (n = 33) and furthermore to drug-naive seizure patients (n = 9). Analyses were performed by calculating coefficient of variation and spectral power in full band and filtered sub-bands. Brain pulsations in the respiratory-related frequency sub-band (0.11–0.51 Hz) were significantly (P < 0.05) increased in patients with epilepsy, with an increase in both signal variance and power. At the individual level, over 80% of medicated and drug-naive seizure patients exhibited areas of abnormal brain signal power that correlated well with the known clinical diagnosis, while none of the controls showed signs of abnormality with the same threshold. The differences were most apparent in the basal brain structures, respiratory centres of brain stem, midbrain and temporal lobes. Notably, full-band, very low frequency (0.01–0.1 Hz) and cardiovascular (0.8–1.76 Hz) brain pulses showed no differences between groups. This study extends and confirms our previous results of abnormal fast functional MRI signal variance in epilepsy patients. Only respiratory-related brain pulsations were clearly increased with no changes in either physiological cardiorespiratory rates or head motion between the subjects. The regional alterations in brain pulsations suggest that mechanisms driving the cerebrospinal fluid homeostasis may be altered in epilepsy. Magnetic resonance encephalography has both increased sensitivity and high specificity for detecting the increased brain pulsations, particularly in times when other tools for locating epileptogenic areas remain inconclusive.


2011 ◽  
Vol 24 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Andrew P. Bagshaw ◽  
Andrea E. Cavanna

Consciousness is a central concept in epileptology, relevant to the understanding of both focal and generalized seizures. Within focal seizures, impairment of consciousness has long been considered as the main criterion differentiating complex partial seizures (CPS) from simple partial seizures With the development of improved tools for investigating human brain function, new insights into the brain mechanisms of altered consciousness in CPS have become available. This paper reviews the existing literature on how the currently available methods can be used to address the fundamental issue of how CPS alter consciousness.


Author(s):  
Dirk Bäumer

Seizures are transient neurological events caused by abnormal excessive or synchronous neuronal activity in the brain. This can arise from a localized brain region, causing focal seizures, or simultaneously from both hemispheres, leading to generalized seizures. Epilepsy is the tendency to develop recurrent seizures and is usually diagnosed after two or more unprovoked seizures. This chapter covers simple partial seizures (sometimes called aura), complex partial seizures, and focal (or partial) seizures, their differential diagnosis, context, approach to diagnosis, key diagnostic tests, therapy, and prognosis, as well as dealing with uncertainty in a diagnosis.


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