Open and Stereotactic Segmental Callosotomy: Effects on Seizure Frequency

Author(s):  
Raul Marino ◽  
Arthur Cukiert ◽  
Gary Gronich
Keyword(s):  
2017 ◽  
Vol 48 (S 01) ◽  
pp. S1-S45
Author(s):  
T. Stapper ◽  
D. Valcheva ◽  
T. Höll ◽  
T. Rosenbaum

2019 ◽  
Vol 23 (4) ◽  
pp. 422-431 ◽  
Author(s):  
Cuiping Xu ◽  
Tao Yu ◽  
Guojun Zhang ◽  
Gary B. Rajah ◽  
Yuping Wang ◽  
...  

OBJECTIVEThe aim of this study was to evaluate the electro-clinical features, etiology, treatment, and postsurgical seizure outcomes in patients with intractable epileptic spasms (ESs).METHODSThe authors retrospectively studied the medical records of all patients who had presented with medically intractable ESs and had undergone surgery in the period between October 2009 and August 2015. The interictal electroencephalography (EEG) pattern, MRI studies, magnetoencephalography findings, and postsurgical seizure outcomes were compared.RESULTSTwenty-six patients, 12 boys and 14 girls (age range 3–22 years), were eligible for study inclusion. Of these 26 patients, 84.6% (22) presented with multiple seizure types including partial seizures (PSs) independent of the ESs (30.8%); ESs followed by tonic seizures (30.8%); myoclonic seizures (19.2%); tonic seizures (19.2%); ESs followed by PSs (19.2%); focal seizures with secondary generalization (15.4%); atypical absence (11.5%); PSs followed by ESs (7.7%); and myoclonic followed by tonic seizures (7.7%). Seventeen patients underwent multilobar resection and 9 underwent unilobar resection. At the last follow-up (mean 36.6 months), 42.3% of patients were seizure free (outcome classification [OC] 1), 23.1% had > 50% reduction in seizure frequency (OC2–OC4), and 34.6% had < 50% reduction in seizure frequency or no improvement (OC5 and OC6). Predictors of favorable outcomes included an interictal focal EEG pattern and concordance between interictal EEG and MRI-demonstrated lesions (p = 0.001 and 0.004, respectively).CONCLUSIONSA favorable surgical outcome is achievable in a highly select group of patients with ESs secondary to structural lesions. Interictal EEG can help in identifying patients with the potential for favorable resective outcomes.


Author(s):  
Masayasu Ukai ◽  
Thomas Parmentier ◽  
Miguel A. Cortez ◽  
Andrea Fischer ◽  
Luis Gaitero ◽  
...  
Keyword(s):  

Author(s):  
Giuseppe d’Orsi ◽  
Francesca Mazzeo ◽  
Domenico Ravidà ◽  
Maria Teresa Di Claudio ◽  
Annarita Sabetta ◽  
...  

2019 ◽  
Vol 20 (3) ◽  
pp. 189-198 ◽  
Author(s):  
Laura Pérez-Carbonell ◽  
Howard Faulkner ◽  
Sean Higgins ◽  
Michalis Koutroumanidis ◽  
Guy Leschziner

Vagus nerve stimulation (VNS) is a neuromodulatory therapeutic option for drug-resistant epilepsy. In randomised controlled trials, VNS implantation has resulted in over 50% reduction in seizure frequency in 26%–40% of patients within 1 year. Long-term uncontrolled studies suggest better responses to VNS over time; however, the assessment of other potential predictive factors has led to contradictory results. Although initially designed for managing focal seizures, its use has been extended to other forms of drug-resistant epilepsy. In this review, we discuss the evidence supporting the use of VNS, its impact on seizure frequency and quality of life, and common adverse effects of this therapy. We also include practical guidance for the approach to and the management of patients with VNS in situ.


1993 ◽  
Vol 78 (1) ◽  
pp. 26-31 ◽  
Author(s):  
Howard J. Landy ◽  
R. Eugene Ramsay ◽  
Jeremy Slater ◽  
Roy R. Casiano ◽  
Robert Morgan

✓ Electrical stimulation of the vagus nerve has shown efficacy in controlling seizures in experimental models, and early clinical trials have suggested possible benefit in humans. Eleven patients with complex partial seizures were subjected to implantation of vagus nerve stimulators. Electrode contacts embedded in silicone rubber spirals were placed on the left vagus nerve in the low cervical area. A transcutaneously programmable stimulator module was placed in an infraclavicular subcutaneous pocket and connected to the electrode. One patient required replacement of the system due to electrode fracture. Another patient developed delayed ipsilateral vocal-cord paralysis; the technique was then modified to allow more tolerance for postoperative nerve edema. A third patient showed asymptomatic vocal-cord paresis on immediate postoperative laryngoscopy. Vagus nerve stimulation produces transient vocal-cord dysfunction while the current is on. Nine patients were randomly assigned to receive either high- or low-current stimulation, and seizure frequency was recorded. The high-current stimulation group showed a median reduction in seizure frequency of 27.7% compared to the preimplantation baseline, while the low-current stimulation group showed a median increase of 6.3%. This difference approached statistical significance. The entire population then received maximally tolerable stimulation. The high-current stimulation group showed a further 14.3% reduction, while the low-current stimulation group showed a 25.4% reduction compared to the blinded period. The efficacy of vagus nerve stimulation seemed to depend on stimulus parameters, and a cumulative effect was evident. These results are encouraging, and further study of this modality as an adjunct treatment for epilepsy is warranted.


2009 ◽  
Vol 16 (2) ◽  
pp. 325-329 ◽  
Author(s):  
Ramon Edmundo D. Bautista ◽  
E. Tannahill Glen

Epilepsia ◽  
1978 ◽  
Vol 19 (5) ◽  
pp. 475-483 ◽  
Author(s):  
Allen R. Wyler ◽  
Kim J. Burchiel ◽  
Arthur A. Ward
Keyword(s):  

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