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24
result(s) for
"Dwivedi, Rekha"
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Surgery for Drug-Resistant Epilepsy in Children
by
Ramanujam, Bhargavi
,
Sarkar, Chitra
,
Gulati, Sheffali
in
Adolescent
,
Adolescents
,
Anterior Temporal Lobectomy - adverse effects
2017
In children with drug-resistant epilepsy, the rate of freedom from seizures at 1 year was higher with epilepsy surgery than with medical therapy alone. Most measures of cognitive development were better in the surgery group than in the medical-therapy group.
Journal Article
Reliability, Validity, and Feasibility of Customizable Ictal Testing Battery (C-ITB) for Assessing Cognitive Functions in Epilepsy Monitoring Unit (EMU)
by
Tripathi, Shashank
,
Tripathi, Madhvi
,
Nehra, Ashima
in
Epilepsy
,
Localization
,
Original Article
2025
Background:
Ictal cognitive assessments carried out in Epilepsy Monitoring Units (EMUs) have been standardized on the Western population which is unable to capture the socioeducational differences present in the Indian population.
Objective:
This study focuses on modifying and rearranging components of the International League Against Epilepsy's Ictal Testing Battery (ILAE-ITB) in a local setting at an Indian epilepsy center.
Methods:
The Customizable Ictal Testing Battery (C-ITB) was modified using ILAE-ITB by enabling variable order of item administration, prioritizing items testing the suspect seizure onset region. The consenting participants were assessed using both batteries. The diagnostic performance and localization ability of C-ITB were also measured.
Results:
116 patients with drug-resistant epilepsy were recruited. Association between both batteries was statistically significant using the Chi-square/Fisher's exact test (P value < 0.001). The Cohen's kappa was 85.6 and the sensitivity and specificity indices were 100% and 80% respectively. C-ITB demonstrated an inherent validity of 94.8%. There was a significant association between the localization demonstrated by C-ITB and vEEG, MRI. The localization capabilities of C-ITB and ILAE-ITB were comparable.
Significance:
C-ITB is a comprehensive measure of ictal functioning adapted according to the requirements of Indian patients with epilepsy and might facilitate further research into the domain of ictal response deficits.
Journal Article
Comparative Analysis of Hemispherotomy in Adults versus Children- A Prospective Observational Series
by
Ramanujam, Bhargavi
,
Nehra, Ashima
,
Tripathi, Manjari
in
Adults
,
Care and treatment
,
Children
2024
Background:
Hemispherotomy (HS) is an effective treatment for unilateral hemispheric onset epilepsy. There are few publications for HS in adults, and there is no series comparing adults and pediatric patients of HS.
Objective:
To compare the hemispherotomies done in adult patients with pediatric ones in terms of efficacy and safety.
Methods:
Data was prospectively collected for HS patients (up to 18 years and more) from Aug 2014 to Aug 2018. Comparison between the groups was made for seizure onset, duration of epilepsy, frequency of seizures, number of drugs, intraoperative blood loss, postoperative seizure control, postoperative stay, postoperative motor functions, and preoperative and postoperative intelligence quotient. Follow-up was one year.
Results:
A total of 61 pediatric and 11 adults underwent HS. The seizure onset was earlier in children, and the duration of epilepsy was longer in adults. The frequency of seizures per day was more in children being 14.62 ± 26.34 in children, and 7.71 ± 5.21 per day in adults (P - 0.49). The mean number of drugs was similar in the preoperative and postoperative periods in both. Class I seizure outcome was similar in both the groups being 85.24% in children and 90.9% in adults (P - 0.56). Blood loss, postoperative stay, was similar in both the groups. No patient had a new permanent motor deficit. Power worsened transiently in 1 pediatric patient and in 4 adult patients. The visual word reading and object naming improved in both the groups (no intergroup difference), and IQ remained the same in both groups. One adult patient had meningitis, and another had hydrocephalus requiring shunt placement.
Conclusion:
Hemispherotomy is a safe and effective procedure in adults as in children in appropriately selected patients.
Journal Article
Endoscopy-Assisted Interhemispheric Transcallosal Hemispherotomy
2015
Abstract
BACKGROUND:
Various hemispherotomy techniques have been developed to reduce complication rates and achieve the best possible seizure control.
OBJECTIVE:
To present a novel and minimally invasive endoscopy-assisted approach to perform this procedure.
METHODS:
Endoscopy-assisted interhemispheric transcallosal hemispherotomy was performed in 5 children (April 2013-June 2014). The procedure consisted of performing a small craniotomy (4 × 3 cm) just lateral to midline using a transverse skin incision. After dural opening, the surgery was performed with the assistance of a rigid high-definition endoscope, and bayoneted self-irrigating bipolar forceps and other standard endoscopic instruments. Steps included a complete corpus callosotomy followed by the disconnection of the hemisphere at the level of the basal nuclei and thalamus. The surgeries were performed in a dedicated operating room with intraoperative magnetic resonance imaging and neuronavigation. Intraoperative magnetic resonance imaging confirmed a total disconnection.
RESULTS:
The pathologies for which surgeries were performed included sequelae of middle a cerebral artery infarct (n = 2), Rasmussen syndrome (n = 1), and hemimegalencephaly (2). Four patients had an Engel class I and 1 patient had a class II outcome at a mean follow-up of 10.2 months (range, 3-14 months). The mean blood loss was 80 mL, and mean operating time was 220 minutes. There were no complications in this study.
CONCLUSION:
This study describes a pilot novel technique and the feasibility of performing a minimally invasive, endoscopy-assisted hemispherotomy.
Journal Article
Role of Gut Microbiota in Neurological Disorders and Its Therapeutic Significance
2023
In humans, the gut microbiota (GM) are known to play a significant role in the metabolism of nutrients and drugs, immunomodulation, and pathogen defense by inhabiting the gastrointestinal tract (GIT). The role of the GM in the gut–brain axis (GBA) has been documented for different regulatory mechanisms and associated pathways and it shows different behaviors with individualized bacteria. In addition, the GM are known as susceptibility factor for neurological disorders in the central nervous system (CNS), regulating disease progression and being amenable to intervention. Bidirectional transmission between the brain and the GM occurs in the GBA, implying that it performs a significant role in neurocrine, endocrine, and immune-mediated signaling pathways. The GM regulates multiple neurological disorders by supplementing them with prebiotics, probiotics, postbiotics, synbiotics, fecal transplantations, and/or antibiotics. A well-balanced diet is critically important for establishing healthy GM, which can alter the enteric nervous system (ENS) and regulate multiple neurological disorders. Here, we have discussed the function of the GM in the GBA from the gut to the brain and the brain to the gut, the pathways associated with neurology that interacts with the GM, and the various neurological disorders associated with the GM. Furthermore, we have highlighted the recent advances and future prospects of the GBA, which may require addressing research concerns about GM and associated neurological disorders.
Journal Article
Comparing Standard Setting Methods for Objective Structured Clinical Examinations in a Caribbean Medical School
by
Curran, Vernon
,
Nwachukwu, Fidelis
,
Jillwin, Joseph
in
Methods
,
Original Research
,
Standard Setting
2020
Background:
OSCE are widely used for assessing clinical skills training in medical schools. Use of traditional pass fail cut off yields wide variations in the results of different cohorts of students. This has led to a growing emphasis on the application of standard setting procedures in OSCEs.
Purpose/aim:
The purpose of the study was comparing the utility, feasibility and appropriateness of 4 different standard setting methods with OSCEs at XUSOM.
Methods:
A 15-station OSCE was administered to 173 students over 6 months. Five stations were conducted for each organ system (Respiratory, Gastrointestinal and Cardiovascular). Students were assessed for their clinical skills in 15 stations. Four different standard setting methods were applied and compared with a control (Traditional method) to establish cut off scores for pass/fail decisions.
Results:
OSCE checklist scores revealed a Cronbach’s alpha of 0.711, demonstrating acceptable level of internal consistency. About 13 of 15 OSCE stations performed well with “Alpha if deleted values” lower that 0.711 emphasizing the reliability of OSCE stations. The traditional standard setting method (cut off score of 70) resulted in highest failure rate. The Modified Angoff Method and Relative methods yielded the lowest failure rates, which were typically less than 10% for each system. Failure rates for the Borderline methods ranged from 28% to 57% across systems.
Conclusions:
In our study, Modified Angoff method and Borderline regression method have shown to be consistently reliable and practically suitable to provide acceptable cut-off score across different organ system. Therefore, an average of Modified Angoff Method and Borderline Regression Method appeared to provide an acceptable cutoff score in OSCE. Further studies, in high-stake clinical examinations, utilizing larger number of judges and OSCE stations are recommended to reinforce the validity of combining multiple methods for standard setting.
Journal Article
Endoscopy-Assisted Interhemispheric Transcallosal Hemispherotomy: Preliminary Description of a Novel Technique
by
Malviya, Shri Vidya
,
Tripathi, Manjari
,
Dwivedi, Rekha
in
Adolescent
,
Child
,
Child, Preschool
2015
BACKGROUND:Various hemispherotomy techniques have been developed to reduce complication rates and achieve the best possible seizure control.
OBJECTIVE:To present a novel and minimally invasive endoscopy-assisted approach to perform this procedure.
METHODS:Endoscopy-assisted interhemispheric transcallosal hemispherotomy was performed in 5 children (April 2013-June 2014). The procedure consisted of performing a small craniotomy (4 × 3 cm) just lateral to midline using a transverse skin incision. After dural opening, the surgery was performed with the assistance of a rigid high-definition endoscope, and bayoneted self-irrigating bipolar forceps and other standard endoscopic instruments. Steps included a complete corpus callosotomy followed by the disconnection of the hemisphere at the level of the basal nuclei and thalamus. The surgeries were performed in a dedicated operating room with intraoperative magnetic resonance imaging and neuronavigation. Intraoperative magnetic resonance imaging confirmed a total disconnection.
RESULTS:The pathologies for which surgeries were performed included sequelae of middle a cerebral artery infarct (n = 2), Rasmussen syndrome (n = 1), and hemimegalencephaly (2). Four patients had an Engel class I and 1 patient had a class II outcome at a mean follow-up of 10.2 months (range, 3-14 months). The mean blood loss was 80 mL, and mean operating time was 220 minutes. There were no complications in this study.
CONCLUSION:This study describes a pilot novel technique and the feasibility of performing a minimally invasive, endoscopy-assisted hemispherotomy.
ABBREVIATIONS:BKT, Binet Kamat Test of IntelligenceCBCL, Child Behavior ChecklistPedsQL, Pediatric Quality of Life InventorySD, standard deviation
Journal Article
Reliability, Validity, and Feasibility of Customizable Ictal Testing Battery
by
Tripathi, Shashank
,
Tripathi, Madhvi
,
Nehra, Ashima
in
Care and treatment
,
Cognition
,
Diagnosis
2025
Ictal cognitive assessments carried out in Epilepsy Monitoring Units (EMUs) have been standardized on the Western population which is unable to capture the socioeducational differences present in the Indian population. This study focuses on modifying and rearranging components of the International League Against Epilepsy's Ictal Testing Battery (ILAE-ITB) in a local setting at an Indian epilepsy center. The Customizable Ictal Testing Battery (C-ITB) was modified using ILAE-ITB by enabling variable order of item administration, prioritizing items testing the suspect seizure onset region. The consenting participants were assessed using both batteries. The diagnostic performance and localization ability of C-ITB were also measured. 116 patients with drug-resistant epilepsy were recruited. Association between both batteries was statistically significant using the Chi-square/Fisher's exact test (P value < 0.001). The Cohen's kappa was 85.6 and the sensitivity and specificity indices were 100% and 80% respectively. C-ITB demonstrated an inherent validity of 94.8%. There was a significant association between the localization demonstrated by C-ITB and vEEG, MRI. The localization capabilities of C-ITB and ILAE-ITB were comparable. C-ITB is a comprehensive measure of ictal functioning adapted according to the requirements of Indian patients with epilepsy and might facilitate further research into the domain of ictal response deficits.
Journal Article
Endoscopic-Assisted (Through a Mini Craniotomy) Corpus Callosotomy Combined With Anterior, Hippocampal, and Posterior Commissurotomy in Lennox-Gastaut Syndrome: A Pilot Study to Establish Its Safety and Efficacy
2016
BACKGROUND:Corpus callosotomy is a palliative procedure especially for Lennox-Gastaut semiology without localization with drop attacks.
OBJECTIVE:To describe endoscopic-assisted complete corpus callosotomy combined with anterior, hippocampal, and posterior commissurotomy.
METHODS:Patients with drug refractory epilepsy having drop attacks as the predominant seizure type, bilateral abnormalities on imaging, and moderate to severe mental retardation were included. All underwent a complete workup (including magnetic resonance imaging).
RESULTS:Patients (n = 16, mean age 11.4 ± 6.4 years, range 6-19 years) had a mean seizure frequency of 24.5 ± 19.8/days (range 1-60) and a mean intelligence quotient of 25.23 ± 10.71. All had syndromic diagnosis of Lennox-Gastaut syndrome, with the following etiologieshypoxic insult (10), lissencephaly (2), bilateral band heterotropia (2), and microgyria and pachygyria (2). Surgery included complete callosotomy and the section of anterior and posterior commissure by microscopic approach through a mini craniotomy (11) and endoscopic-assisted approach (5). Complications included meningitis (1), hyperammonemic encephalopathy (2), and acute transient disconnection (5). There was no mortality or long-term morbidity. Mean follow-up was 18 ± 4.7 months (range 16-27 months). Drop attacks stopped in all. Seizure frequency/duration decreased >90% in 10 patients and >50% in 5 patients, and increased in 1 patient. All patients attained presurgical functional levels in 3 to 6 months. Child behavior checklist scores showed no deterioration. Parental questionnaires reported 90% satisfaction attributed to the control of drop attacks. The series was compared retrospectively with an age/sex-matched cohort (where a callosotomy only was performed), and showed better outcome for drop attacks (P < .003).
CONCLUSION:This preliminary study demonstrated the efficacy and safety of complete callosotomy with anterior, hippocampal, and posterior commissurotomy in Lennox-Gastaut syndrome (drop attacks) with moderate to severe mental retardation.
ABBREVIATIONS:AC, anterior commissureACT, anterior commissurotomyCBCL, child behavior check listCC, corpus callosotomyHC, hippocampal commissureHCT, hippocampal commissurotomyIQ, intelligence quotientPC, posterior commissurePCT, posterior commissurotomy
Journal Article
Significance of Good Sleep Quality and Interventions for the Improvement
by
Singh, Amar Pratap
,
Poddar, Pranav
,
Kumar, Sachin
in
Biomedical and Life Sciences
,
Biomedicine
,
Blood pressure
2023
Purpose
This is an exploratory pilot study, reporting the impact of the Envirocare device on sleep efficiency. In this study, we have tried to assess the efficacy of Envirocare in improving sleep efficiency.
Methods
The study was performed on 21 healthy subjects having age between 18 and 60 years. Participants slept for a total of two nights (22:00–06:00 h) in the sleep laboratory, attending the experimental sessions at least 10 days apart. Each of the two experimental nights recording the data of normal sleep and sleep with Envirocare were preceded by a readiness session designed to help participants acclimatize to the laboratory conditions and also to rule out the presence of any sleep disorders.
Results
It was seen that the average sleep efficiency score of the subjects at baseline was 80.68 ± 7.39. When the subjects were using Envirocare, the average score was found to be 86.49 ± 7.93. This change was found to be statistically significant improvement (
p
= 0.012).
Conclusion
The use of Envirocare can significantly improve sleep efficiency in controlled conditions. Given the positive impact of better sleep on an individual’s emotional and physical wellbeing, and encouraging results from this pilot, further population-based studies are warranted, involving other indices of human health in a real-world experience.
Journal Article