43 results on '"Ramaratnam S"'
Search Results
2. Yoga for anxiety: a systematic review of the research evidence
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Kirkwood, G., Rampes, H., Tuffrey, V., Richardson, J., Pilkington, K., and Ramaratnam, S.
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Anxiety -- Care and treatment ,Yoga -- Usage ,Yoga -- Health aspects ,Health ,Sports and fitness - Published
- 2005
3. A LARGE OVERTHRUST STRUCTURE NEAR DEBIPUR (BARAKAR), WEST BENGAL
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Rath, D. N., Ramaratnam, S., and Kar, S. B.
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- 1956
4. Psychological treatments for epilepsy
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Ramaratnam, S, primary, Baker, GA, additional, and Goldstein, LH, additional
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- 2005
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5. Rapid versus slow withdrawal of antiepileptic drugs
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Ranganathan, LN, primary and Ramaratnam, S, additional
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- 2004
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6. Psychological treatments for epilepsy
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Ramaratnam, S, primary, Baker, GA, additional, and Goldstein, LH, additional
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- 2003
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7. Vitamins for epilepsy
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Ranganathan, LN, primary and Ramaratnam, S, additional
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- 2003
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8. THE TEMPORAL NATURE AND 'INTERDEPENDENCE' OF AGRICULTURAL PRODUCERS' RISK ATTITUDES AND SUBJECTIVE BELIEFS: A TEXAS EXAMPLE
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Ramaratnam, S. Sri, Bessler, David A., and Rister, M. Edward
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Production Economics ,Agricultural and Food Policy ,Risk and Uncertainty - Published
- 1984
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9. RISK ATTITUDES AND FARM/PRODUCER ATTRIBUTES: A CASE STUDY OF TEXAS COASTAL BEND GRAIN SORGHUM PRODUCERS
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Ramaratnam, S. Sri, Rister, M. Edward, Bessler, David A., and Novak, James L.
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animal diseases ,Risk and Uncertainty - Abstract
An analysis of risk attitudes for a sample of grain sorghum producers in the Texas Coastal Bend is reported. Four alternative functional forms were estimated on data elicited by the direct elicitation of utility approach. The exponential functional form described most producers' utility preferences better than other utility forms. Relationships between exponential risk measures and both producer attributes and farm characteristics, including interactions among them, were identified as significant. Risk aversion was found to diminish with more experience in farming and to increase with more leasing of farm land. Risk aversion was also found to decline with larger farm size and to increase with higher dependency of farm operators on farm income.
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- 1986
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10. AN OVERVIEW OF THE HOLISTIC FARM MANAGEMENT RESEARCH AND EXTENSION PROGRAMS WITH EMPHASIS ON PAST U.S. FARM AND HOME PROGRAMS AND CURRENT FARMING SYSTEMS RESEARCH IN THE DEVELOPING COUNTRIES
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Ramaratnam, S. Sri
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Farm Management - Abstract
Static economic theory views the production and consumption sides of the economic environment separately as two unique activities. The distinction between the business and home aspects in the case of farming arose in economic theory and principles of analysis, especially because static theory assumes perfect knowledge, perfect foresight and the absence of change in production techniques and consumption patterns, and overlooks their interrelationships and interdependence when farmers are viewed both as producers and consumers. A great number of personal values, wants, and desires are encountered on the production side of farming and a major part of management consists of appraising the subjective costs and values of performing the various managerial functions. On the other hand, a great deal of production is recognized to be occurring on the household side of farming. Therefore, it was then realized that the distinctions maintained between the business and home sides of farming were artificial and unrealistic. As a result the distinction between the firm and household became increasingly confused and less meaningful. This basic understanding of the basic nature of operation of farm households led to the development of holistic or comprehensive farm management research and extension activities in the middle part of this century. In the subsequent period, these programs and the holistic focus on firm-household interrelationships in farming were delegated a somewhat reduced role in the research and extension activities. Recently, however, there has been a growing interest among general and development economists in this concept of firm-household behavior, and the related research and extension programs. For the most part the development has ignored past and present emphasis on firm-household interrelationships in the traditional field of farm management. It is the intention of this paper to emphasize the importance of making use of the valuable research and extension knowledge gained in the U.S. through the development of the holistic farm and home programs and the need to incorporate these concepts and the learning experiences into the newly developing methodology of Farming Systems Research.
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- 1981
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11. Epilepsy (generalised)
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Maguire, M., Anthony Marson, and Ramaratnam, S.
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Carbamazepine ,Epilepsy ,Incidence ,Phenytoin ,Valproic Acid ,Remission Induction ,Humans ,Anticonvulsants ,Epilepsy, Generalized ,Neurological Disorders - Abstract
About 3% of people will be diagnosed with epilepsy during their lifetime, but about 70% of people with epilepsy eventually go into remission.We conducted a systematic review and aimed to answer the following clinical questions: What are the effects of monotherapy in newly diagnosed generalised epilepsy (tonic clonic type)? What are the effects of additional treatments in people with drug-resistant generalised epilepsy? What are the effects of surgery in people with drug-resistant generalised epilepsy? We searched: Medline, Embase, The Cochrane Library, and other important databases up to July 2009 (Clinical Evidence reviews are updated periodically; please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA).We found eight systematic reviews, RCTs, or observational studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions.In this systematic review we present information relating to the effectiveness and safety of the following interventions: monotherapy using carbamazepine, gabapentin, lamotrigine, levetiracetam, phenobarbital, phenytoin, sodium valproate, or topiramate; addition of second-line drugs (lamotrigine or levetiracetam) for drug-resistant epilepsy; and hemispherectomy for drug-resistant epilepsy.
12. Epilepsy (partial)
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Maguire, M., Anthony Marson, and Ramaratnam, S.
13. Risk Attitudes and Farm/Producer Attributes: A Case Study of Texas Coastal Bend Grain Sorghum Producers
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Ramaratnam, S. Sri, primary, Rister, M. Edward, additional, Bessler, David A., additional, and Novak, James, additional
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- 1986
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14. Guidelines for epilepsy management in India classification of seizures and epilepsy syndromes
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Ramaratnam Sridharan and Satishchandra P
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Epilepsy ,classification ,seizures ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
This article is part of the Guidelines for Epilepsy management in India. This article reviews the classification systems used for epileptic seizures and epilepsy and present the recommendations based on current evidence. At present, epilepsy is classified according to seizure type and epilepsy syndrome using the universally accepted International League Against Epilepsy (ILAE) classification of epileptic seizures and epilepsy syndromes. A multi-axial classification system incorporating ictal phenomenology, seizure type, epilepsy syndrome, etiology and impairments is being developed by the ILAE task force. The need to consider age-related epilepsy syndromes is particularly important in children with epilepsy. The correct classification of seizure type and epilepsy syndrome helps the individual with epilepsy to receive appropriate investigations, treatment, and information about the likely prognosis.
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- 2010
15. Frequent exposure to suboptimal temperatures in vaccine cold-chain system in India: results of temperature monitoring in 10 states
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Manoj V Murhekar, Srihari Dutta, Ambujam Nair Kapoor, Sailaja Bitragunta, Raja Dodum, Pramit Ghosh, Karumanagounder Kolanda Swamy, Kalyanranjan Mukhopadhyay, Somorjit Ningombam, Kamlesh Parmar, Devegowda Ravishankar, Balraj Singh, Varsha Singh, Rajesh Sisodiya, Ramaratnam Subramanian, and Tana Takum
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Public aspects of medicine ,RA1-1270 - Abstract
Objective To estimate the proportion of time the vaccines in the cold-chain system in India are exposed to temperatures of 8 °C. Methods In each of 10 states, the largest district and the one most distant from the state capital were selected for study. Four boxes, each containing an electronic temperature recorder and two vials of diphtheria, pertussis and tetanus vaccine, were placed in the state or regional vaccine store for each study state. Two of these boxes were then shipped – one per facility – towards the two most peripheral health facilities where vaccine was stored in each study district. The boxes were shipped, handled and stored as if they were routine vaccine supplies. Findings In state, regional and district vaccine stores and peripheral health facilities, respectively, the temperatures in the boxes exceeded 8 °C for 14.3%, 13.2%, 8.3% and 14.7% of their combined storage times and fell below 0 °C for 1.5%, 0.2%, 0.6% and 10.5% of these times. The boxes also spent about 18% and 7% of their combined times in transit at 8 °C, respectively. In shake tests conducted at the end of the study, two thirds of the vaccine vials in the boxes showed evidence of freezing. Conclusion While exposure to temperatures above 8 °C occurred at every level of vaccine storage, exposure to subzero temperatures was only frequent during vaccine storage at peripheral facilities and vaccine transportation. Systematic efforts are needed to improve temperature monitoring in the cold-chain system in India.
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16. A Systematic Review and Meta-Analysis of Ayurvedic Herbal Preparations for Hypercholesterolemia.
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Gyawali D, Vohra R, Orme-Johnson D, Ramaratnam S, and Schneider RH
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- Humans, Medicine, Ayurvedic, Cardiovascular Diseases drug therapy, Cardiovascular Diseases prevention & control, Garlic, Hypercholesterolemia drug therapy, Hyperlipidemias
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Background and Objectives: Cardiovascular disease (CVD) is the leading cause of death globally and hypercholesterolemia is one of the major risk factors associated with CVD. Due to a growing body of research on side effects and long-term impacts of conventional CVD treatments, focus is shifting towards exploring alternative treatment approaches such as Ayurveda. However, because of a lack of strong scientific evidence, the safety and efficacy profiles of such interventions have not been well established. The current study aims to conduct a systematic review and meta-analyses to explore the strength of evidence on efficacy and safety of Ayurvedic herbs for hypercholesterolemia. Methods : Literature searches were conducted using databases including Medline, Cochrane Database, AMED, Embase, AYUSH research portal, and many others. All randomized controlled trials on individuals with hypercholesterolemia using Ayurvedic herbs (alone or in combination) with an exposure period of ≥ 3 weeks were included, with primary outcomes being total cholesterol levels, adverse events, and other cardiovascular events. The search strategy was determined with the help of the Cochrane Metabolic and Endocrine Disorders Group. Two researchers assessed the risk of each study individually and discrepancies were resolved by consensus or consultation with a third researcher. Meta-analysis was conducted using the inverse variance method and results are presented as forest plots and data summary tables using Revman v5.3. Results: A systematic review of 32 studies with 1386 participants found randomized controlled trials of three Ayurvedic herbs, Allium sativum (garlic), Commiphora mukul (guggulu), and Nigella sativa (black cumin) on hypercholesterolemia that met inclusion criteria. The average duration of intervention was 12 weeks. Meta-analysis of the trials showed that guggulu reduced total cholesterol and low-density lipoprotein levels by 16.78 mg/dL (95% C.I. 13.96 to 2.61; p -value = 0.02) and 18.78 mg/dL (95% C.I. 34.07 to 3.48; p = 0.02), respectively. Garlic reduced LDL-C by 10.37 mg/dL (95% C.I. -17.58 to -3.16; p -value = 0.005). Black cumin lowered total cholesterol by 9.28 mg/dL (95% C.I. -17.36, to -1.19, p -value = 0.02). Reported adverse side effects were minimal. Conclusion: There is moderate to high level of evidence from randomized controlled trials that the Ayurvedic herbs guggulu, garlic, and black cumin are moderately effective for reducing hypercholesterolemia. In addition, minimal evidence was found for any side effects associated with these herbs, positioning them as safe adjuvants to conventional treatments.
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- 2021
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17. Lamotrigine add-on therapy for drug-resistant focal epilepsy.
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Panebianco M, Bresnahan R, Ramaratnam S, and Marson AG
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- Adult, Anticonvulsants adverse effects, Ataxia chemically induced, Ataxia epidemiology, Child, Cognition drug effects, Cross-Over Studies, Diplopia chemically induced, Diplopia epidemiology, Dizziness chemically induced, Dizziness epidemiology, Drug Resistance, Drug Therapy, Combination, Fatigue chemically induced, Fatigue epidemiology, Humans, Lamotrigine adverse effects, Nausea chemically induced, Nausea epidemiology, Patient Dropouts statistics & numerical data, Quality of Life, Randomized Controlled Trials as Topic, Seizures prevention & control, Treatment Outcome, Anticonvulsants administration & dosage, Drug Resistant Epilepsy drug therapy, Epilepsies, Partial drug therapy, Lamotrigine administration & dosage
- Abstract
Background: This is an updated version of the Cochrane Review previously published in 2016. Epilepsy is a common neurological disorder, affecting 0.5% to 1% of the population. For nearly 30% of these people, their epilepsy is resistant to currently available drugs. Pharmacological treatment remains the first choice to control epilepsy. Lamotrigine is one of the newer antiepileptic drugs. Lamotrigine, in combination with other antiepileptic drugs (add-on), can reduce seizures, but with some adverse effects., Objectives: To determine the effects of lamotrigine on (1) seizures, (2) adverse-effect profile, and (3) cognition and quality of life, compared to placebo, when used as an add-on treatment for people with drug-resistant focal epilepsy., Search Methods: For the latest update of the review, we searched the following databases on 9 March 2020: Cochrane Register of Studies (CRS Web), MEDLINE (Ovid, 1946 to March 06, 2020). CRS Web includes randomized or quasi-randomized, controlled trials from PubMed, EMBASE, ClinicalTrials.gov, the World Health Organization International Clinical Trials Registry Platform (ICTRP), the Cochrane Central Register of Controlled Trials (CENTRAL), and the Specialized Registers of Cochrane Review Groups including Epilepsy. No language restrictions were imposed., Selection Criteria: Randomised placebo-controlled trials of people with drug-resistant focal epilepsy of any age, in which an adequate method of concealment of randomisation was used. The studies were double-, single- or unblinded, placebo-controlled. For cross-over studies, the first treatment period was treated as a parallel trial. Eligible participants were adults or children with drug-resistant focal epilepsy., Data Collection and Analysis: For this update, two review authors independently assessed the trials for inclusion, and extracted data. Outcomes included 50% or greater reduction in seizure frequency, treatment withdrawal (any reason), adverse effects, effects on cognition and quality of life. Primary analyses were by intention-to-treat. Sensitivity best- and worse-case analyses were undertaken to account for missing outcome data. Pooled risk ratios (RRs) with 95% confidence intervals (95% Cls) were estimated for the primary outcomes of seizure frequency and treatment withdrawal. For adverse effects, we calculated pooled RRs and 99% Cls., Main Results: We did not identify any new studies for this update, therefore, the results and conclusions are unchanged. In previous updates of this review, the authors found five parallel add-on studies, eight cross-over studies in adults or children with drug-resistant focal epilepsy, and one parallel add-on study with a responder-enriched design in infants. In total, these 14 studies included 1806 eligible participants (38 infants, 199 children, 1569 adults). Baseline phases ranged from four to 12 weeks; treatment phases from eight to 36 weeks. Overall, 11 studies (1243 participants) were rated as having low risk of bias, and three (697 participants) had unclear risk of bias due to lack of reported information around study design. Effective blinding of studies was reported in four studies (563 participants). The overall risk ratio (RR) for 50% or greater reduction in seizure frequency was 1.80 (95% CI 1.45 to 2.23; 12 trials, 1322 participants (adults and children); moderate-certainty evidence) indicating that lamotrigine was significantly more effective than placebo in reducing seizure frequency. The overall RR for treatment withdrawal (for any reason) was 1.11 (95% CI 0.91 to 1.37; 14 trials; 1806 participants; moderate-certainty evidence). The adverse events significantly associated with lamotrigine were: ataxia, dizziness, diplopia (double vision), and nausea. The RR of these adverse effects were as follows: ataxia 3.34 (99% Cl 2.01 to 5.55; 12 trials; 1525 participants; high-certainty evidence); dizziness 2.00 (99% Cl 1.52 to 2.64;13 trials; 1768 participants; moderate-certainty evidence); diplopia 3.79 (99% Cl 2.15 to 6.68; 3 trials, 944 participants; high-certainty evidence); nausea 1.81 (99% Cl 1.22 to 2.68; 12 studies,1486 participants; moderate-certainty evidence). The limited data available precluded any conclusions about effects on cognition and quality of life. No important heterogeneity between studies was found for any of the outcomes. Overall, we assessed the evidence as high to moderate certainty, due to incomplete data for some outcomes., Authors' Conclusions: Lamotrigine as an add-on treatment for drug-resistant focal seizures appears to be effective in reducing seizure frequency, and seems to be fairly well-tolerated. However, the trials were of relatively short duration and provided no evidence for the long term. Further trials are needed to assess the long-term effects of lamotrigine, and to compare lamotrigine with other add-on drugs., (Copyright © 2020 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.)
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- 2020
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18. Subpial transection surgery for epilepsy.
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Krishnaiah B, Ramaratnam S, and Ranganathan LN
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- Anticonvulsants therapeutic use, Epilepsy drug therapy, Humans, Nerve Fibers, Cerebral Cortex surgery, Epilepsy surgery
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Background: Nearly 30% of patients with epilepsy continue to have seizures despite using several antiepileptic drugs (AEDs). Such patients are regarded as having refractory, or uncontrolled, epilepsy. While there is no universally accepted definition of uncontrolled, or medically refractory, epilepsy, for the purposes of this review we will consider seizures as drug resistant if they have failed to respond to a minimum of two AEDs. Specialists consider that early surgical intervention may prevent seizures at a younger age, which in turn may improve the intellectual and social status of children. Many types of surgery are available for treating refractory epilepsy; one such procedure is known as subpial transection., Objectives: To assess the effects of subpial transection for focal-onset seizures and generalised tonic-clonic seizures in children and adults., Search Methods: For the latest update we searched the following databases on 7 August 2018: the Cochrane Register of Studies (CRS Web), which includes the Cochrane Epilepsy Group Specialized Register and the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE (Ovid, 1946 to August 06, 2018), ClinicalTrials.gov, and the WHO International Clinical Trials Registry Platform (ICTRP). We imposed no language restrictions., Selection Criteria: We considered all randomised and quasi-randomised parallel-group studies, whether blinded or non-blinded., Data Collection and Analysis: Two review authors (BK and SR) independently screened trials identified by the search. The same two review authors planned to independently assess the methodological quality of studies. Had we identified studies for inclusion, one review author would have extracted the data, and the other would have verified the data., Main Results: We found no relevant studies., Authors' Conclusions: We found no evidence to support or refute the use of subpial transection surgery for patients with medically refractory epilepsy. Well-designed randomised controlled trials are needed to guide clinical practice.
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- 2018
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19. Yoga for epilepsy.
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Panebianco M, Sridharan K, and Ramaratnam S
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- Acceptance and Commitment Therapy, Adult, Drug Resistant Epilepsy etiology, Humans, Quality of Life, Randomized Controlled Trials as Topic, Seizures therapy, Stress, Psychological complications, Stress, Psychological therapy, Drug Resistant Epilepsy therapy, Yoga
- Abstract
Background: This is an updated version of the original Cochrane Review published in the Cochrane Library, Issue 5, 2015.Yoga may induce relaxation and stress reduction, and influence the electroencephalogram and the autonomic nervous system, thereby controlling seizures. Yoga would be an attractive therapeutic option for epilepsy if proved effective., Objectives: To assess whether people with epilepsy treated with yoga:(a) have a greater probability of becoming seizure free;(b) have a significant reduction in the frequency or duration of seizures, or both; and(c) have a better quality of life., Search Methods: For this update, we searched the Cochrane Epilepsy Group Specialized Register (3 January 2017), the Cochrane Central Register of Controlled Trials (CENTRAL; 2016, Issue 12) in the Cochrane Library (searched 3 January 2017), MEDLINE (Ovid, 1946 to 3 January 2017), SCOPUS (1823 to 3 January 2017), ClinicalTrials.gov (searched 3 January 2017), the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) (searched 3 January 2017), and also registries of the Yoga Biomedical Trust and the Research Council for Complementary Medicine. In addition, we searched the references of all the identified studies. No language restrictions were imposed., Selection Criteria: The following study designs were eligible for inclusion: randomised controlled trials (RCT) of treatment of epilepsy with yoga. The studies could be double-, single- or unblinded. Eligible participants were adults with uncontrolled epilepsy comparing yoga with no treatment or different behavioural treatments., Data Collection and Analysis: Two review authors independently assessed the trials for inclusion and extracted data. The following outcomes were assessed: (a) percentage of people rendered seizure free; (b) seizure frequency and duration; (c) quality of life. Analyses were on an intention-to-treat basis. Odds ratio (OR) with 95% confidence intervals (95% Cls) were estimated for the outcomes., Main Results: We did not identify any new studies for this update, therefore the results are unchanged.For the previous version of the review, the authors found two unblinded trials in people with refractory epilepsy. In total these two studies included 50 people (18 treated with yoga and 32 to control interventions). Antiepileptic drugs were continued in all the participants. Baseline phase lasted three months in both studies and treatment phase from five weeks to six months in the two trials. Randomisation was by roll of a die in one study and using a computerised randomisation table in the other one but neither study provided details of concealment of allocation and were rated as unclear risk of bias. Overall, the two studies were rated as low risk of bias (all participants were included in the analysis; all expected and pre-expected outcomes were reported; no other sources of bias).The overall ORs with 95% CI were as follows: (i) seizure free for six months - for yoga versus sham yoga the OR was 14.54 (95% CI 0.67 to 316.69) and for yoga versus 'no treatment' group it was 17.31 (95% CI 0.80 to 373.45); for Acceptance and Commitment Therapy (ACT) versus yoga the OR was 1.00 (95% Cl 0.16 to 6.42); (ii) reduction in seizure frequency - the mean difference between yoga versus sham yoga group was -2.10 (95% CI -3.15 to -1.05) and for yoga versus 'no treatment' group it was -1.10 (95% CI -1.80 to -0.40); (iii) more than 50% reduction in seizure frequency - for yoga versus sham yoga group, OR was 81.00 (95% CI 4.36 to 1504.46) and for the yoga versus 'no treatment' group it was 158.33 (95% CI 5.78 to 4335.63); ACT versus yoga OR was 0.78 (95% Cl 0.04 to 14.75); (iv) more than 50% reduction in seizure duration - for yoga versus sham yoga group OR was 45.00 (95% CI 2.01 to 1006.75) and for yoga versus 'no treatment' group it was 53.57 (95% CI 2.42 to 1187.26); ACT versus yoga OR was 0.67 (95% Cl 0.10 to 4.35).In addition in Panjwani 1996 the authors reported that the one-way analysis of variance revealed no statistically significant differences between the three groups. A P-Lambda test taking into account the P values between the three groups also indicated that the duration of epilepsy in the three groups was not comparable. No data were available regarding quality of life. In Lundgren 2008 the authors reported that there was no significant difference between the yoga and ACT groups in seizure-free rates, 50% or greater reduction in seizure frequency or seizure duration at one-year follow-up. The yoga group showed significant improvement in their quality of life according to the Satisfaction With Life Scale (SWLS) (P < 0.05), while the ACT group had significant improvement in the World Health Organization Quality of Life-BREF (WHOQOL-BREF) scale (P < 0.01).Overall, we assessed the quality of evidence as low; no reliable conclusions can be drawn at present regarding the efficacy of yoga as a treatment for epilepsy., Authors' Conclusions: A study of 50 subjects with epilepsy from two trials reveals a possible beneficial effect in control of seizures. Results of the overall efficacy analysis show that yoga treatment was better when compared with no intervention or interventions other than yoga (postural exercises mimicking yoga). There was no difference between yoga and Acceptance and Commitment Therapy. However no reliable conclusions can be drawn regarding the efficacy of yoga as a treatment for uncontrolled epilepsy, in view of methodological deficiencies such as limited number of studies, limited number of participants randomised to yoga, lack of blinding and limited data on quality-of-life outcome. Physician blinding would normally be taken to be the person delivering the intervention, whereas we think the 'physician' would in fact be the outcome assessor (who could be blinded), so that would be a reduction in detection bias rather than performance bias. In addition, evidence to inform outcomes is limited and of low quality. Further high-quality research is needed to fully evaluate the efficacy of yoga for refractory epilepsy.Since we did not find any new studies, our conclusions remain unchanged.
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- 2017
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20. Lamotrigine add-on for drug-resistant partial epilepsy.
- Author
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Ramaratnam S, Panebianco M, and Marson AG
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- Adult, Anticonvulsants adverse effects, Child, Cognition drug effects, Cross-Over Studies, Drug Resistance, Drug Therapy, Combination, Humans, Lamotrigine, Quality of Life, Randomized Controlled Trials as Topic, Triazines adverse effects, Anticonvulsants administration & dosage, Epilepsies, Partial drug therapy, Triazines administration & dosage
- Abstract
Background: This is an updated version of the Cochrane review published in The Cochrane Library 2010, Issue 1.Epilepsy is a common neurological disorder, affecting almost 0.5% to 1% of the population. For nearly 30% of these people, their epilepsy is refractory to currently available drugs. Pharmacological treatment remains the first choice to control epilepsy. Lamotrigine is one of the newer antiepileptic drugs and is the topic of this review. Lamotrigine in combination with other antiepileptic drugs (add-on) can reduce seizures, but with some adverse effects. The aim of this systematic review was to overview the current evidence for the efficacy and tolerability of lamotrigine when used as an adjunctive treatment for people with refractory partial epilepsy., Objectives: To determine the effects of lamotrigine on (1) seizures, (2) adverse effect profile, and (3) cognition and quality of life, compared to placebo controls, when used as an add-on treatment for people with refractory partial epilepsy., Search Methods: For the previous version of the review, the authors searched the Cochrane Epilepsy Group Specialized Register (January 2010), the Cochrane Central Register of Controlled Trials (CENTRAL, The Cochrane Library 2010, Issue 1), MEDLINE (1950 to January 2010), and reference lists of articles.For this update, we searched the Cochrane Epilepsy Group Specialized Register (28 May 2015), CENTRAL (The Cochrane Library 2015, Issue 4), MEDLINE (Ovid, 1946 to May 2015), and reference lists of articles. We also contacted the manufacturers of lamotrigine (GlaxoSmithKline). No language restrictions were imposed., Selection Criteria: Randomised placebo-controlled trials of people with drug-resistant partial epilepsy of any age, in which an adequate method of concealment of randomisation was used. The studies were double-, single- or unblinded. For cross-over studies, the first treatment period was treated as a parallel trial. Eligible participants were adults or children with drug-resistant partial epilepsy., Data Collection and Analysis: For this update, two review authors independently assessed the trials for inclusion, and extracted data. Outcomes included 50% or greater reduction in seizure frequency, treatment withdrawal (any reason), adverse effects, effects on cognition and quality of life. Primary analyses were by intention-to-treat. Sensitivity best and worse case analyses were undertaken to account for missing outcome data. Pooled Risk Ratios (RR) with 95% confidence intervals (95% Cl) were estimated for the primary outcomes of seizure frequency and treatment withdrawal. For adverse effects, pooled RRs and 99% Cls were calculated., Main Results: We did not identify any new studies for this update, therefore, the results are unchanged.For the previous version of the review, the authors found five parallel add-on studies and eight cross-over studies in adults or children with refractory focal epilepsy, and one parallel add-on study with a responder-enriched design in infants. In total, these 14 studies included 1958 participants (38 infants, 199 children, and 1721 adults). Baseline phases ranged from 4 to 12 weeks; treatment phases from 8 to 36 weeks. Overall, eleven studies (n = 1243 participants) were rated as having a low risk of bias, and three (n = 715 participants) had un unclear risk of bias due to lack of reported information around study design. Effective blinding of studies was reported in three studies (n = 504 participants). The overall risk ratio (RR) for 50% or greater reduction in seizure frequency was 1.80 (95% CI 1.45 to 2.23; 12 RCTs) for twelve studies (n = 1322 participants, adults and children) indicating that lamotrigine was significantly more effective than placebo in reducing seizure frequency. The overall RR for treatment withdrawal (for any reason) was 1.11 (95% CI 0.90 to 1.36; 14 RCTs) for fourteen studies (n = 1958 participants). The adverse events significantly associated with lamotrigine were: ataxia, dizziness, diplopia, and nausea. The RR of these adverse effects were as follows: ataxia 3.34 (99% Cl 2.01 to 5.55; 12 RCTs; n = 1524); dizziness 2.00 (99% Cl 1.51 to 2.64;13 RCTs; n = 1767); diplopia 3.79 (99% Cl 2.15 to 6.68; 3 RCTs; n = 943); nausea 1.81 (99% Cl 1.22 to 2.68; 12 RCTs; n = 1486). The limited data available precluded any conclusions about effects on cognition and quality of life. No important heterogeneity between studies was found for any of the outcomes. Overall, we assessed the evidence as high to moderate quality, due to incomplete data for some outcomes., Authors' Conclusions: Lamotrigine as an add-on treatment for partial seizures appears to be effective in reducing seizure frequency, and seems to be fairly well tolerated. However, the trials were of relatively short duration and provided no evidence for the long-term. Further trials are needed to assess the long-term effects of lamotrigine, and to compare it with other add-on drugs.Since we did not find any new studies, our conclusions remain unchanged.
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- 2016
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21. WITHDRAWN: Psychological treatments for epilepsy.
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Ramaratnam S, Baker GA, and Goldstein LH
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- Biofeedback, Psychology, Cognitive Behavioral Therapy, Humans, Patient Education as Topic, Relaxation Therapy, Epilepsy therapy, Psychotherapy methods
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- 2016
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22. Subpial transection surgery for epilepsy.
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Krishnaiah B, Ramaratnam S, and Ranganathan LN
- Subjects
- Anticonvulsants therapeutic use, Epilepsy drug therapy, Humans, Nerve Fibers, Cerebral Cortex surgery, Epilepsy surgery
- Abstract
Background: Nearly 30% of patients with epilepsy continue to have seizures in spite of using several antiepileptic drug (AED) regimens. Such patients are regarded as having refractory, or uncontrolled, epilepsy. No definition of uncontrolled, or medically refractory, epilepsy has been universally accepted, but for the purposes of this review, we will consider seizures as drug resistant if they have failed to respond to a minimum of two AEDs. It is believed that early surgical intervention may prevent seizures at a younger age, which, in turn, may improve the intellectual and social status of children. Many types of surgery are available for treatment of refractory epilepsy; one such procedure is known as subpial transection., Objectives: To determine the benefits and adverse effects of subpial transection for partial-onset seizures and generalised tonic-clonic seizures in children and adults., Search Methods: We searched the Cochrane Epilepsy Group Specialised Register (29 June 2015), the Cochrane Central Register of Controlled Trials (CENTRAL; May 2015, Issue 5) and MEDLINE (1946 to 29 June 2015). We imposed no language restrictions., Selection Criteria: We considered all randomised and quasi-randomised parallel-group studies, whether blinded or non-blinded., Data Collection and Analysis: Two review authors (BK and SR) independently screened trials identified by the search. The same two review authors planned to independently assess the methodological quality of studies. When studies were identified for inclusion, one review author would have extracted the data, and the other would have verified the data., Main Results: We found no relevant studies., Authors' Conclusions: We found no evidence to support or refute use of subpial transection surgery for patients with medically refractory epilepsy. Well-designed randomised controlled trials are needed to guide clinical practice.
- Published
- 2015
- Full Text
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23. Yoga for epilepsy.
- Author
-
Panebianco M, Sridharan K, and Ramaratnam S
- Subjects
- Acceptance and Commitment Therapy, Adult, Epilepsy etiology, Humans, Quality of Life, Randomized Controlled Trials as Topic, Seizures therapy, Stress, Psychological complications, Stress, Psychological therapy, Epilepsy therapy, Yoga
- Abstract
Background: This is an updated version of the original Cochrane review published in The Cochrane Library, Issue 1, 2002.Yoga may induce relaxation and stress reduction, and influence the electroencephalogram and the autonomic nervous system, thereby controlling seizures. Yoga would be an attractive therapeutic option for epilepsy if proved effective., Objectives: To assess whether people with epilepsy treated with yoga:(a) have a greater probability of becoming seizure free;(b) have a significant reduction in the frequency or duration of seizures, or both; and(c) have a better quality of life., Search Methods: We searched the Cochrane Epilepsy Group Specialized Register (26 March 2015), the Cochrane Central Register of Controlled Trials (CENTRAL, The Cochrane Library, 26 March 2015), MEDLINE (Ovid, 1946 to 26 March 2015), SCOPUS (1823 to 9 January 2014), ClinicalTrials.gov (26 March 2015), the World Health Organization (WHO) International Clinical Trials Registry Platform ICTRP (26 March 2015), and also registries of the Yoga Biomedical Trust and the Research Council for Complementary Medicine. In addition, we searched the references of all the identified studies. No language restrictions were imposed., Selection Criteria: The following study designs were eligible for inclusion: randomised controlled trials (RCT) of treatment of epilepsy with yoga. Eligible participants were adults with uncontrolled epilepsy comparing yoga with no treatment or different behavioural treatments., Data Collection and Analysis: Three review authors independently selected trials for inclusion and extracted data. The following outcomes were assessed: (a) percentage of people rendered seizure free; (b) seizure frequency and duration; (c) quality of life. Analyses were on an intention-to-treat basis. Odds ratio (OR) with 95% confidence intervals (95% Cl) were estimated for the outcomes., Main Results: Two unblinded trials recruited a total of 50 people (18 treated with yoga and 32 to control interventions). Antiepileptic drugs were continued in all the participants. Baseline phase lasted 3 months in both studies and treatment phase from 5 weeks to 6 months in the two trials. Randomisation was by roll of a die in one study and using a computerised randomisation table in the other one but neither study provided details of concealment of allocation and were rated as unclear risk of bias. Overall, the two studies were rated as low risk of bias (all participants were included in the analysis; all expected and pre-expected outcomes were reported; no other sources of bias). The overall OR with 95% confidence interval (CI) was: (i) seizure free for six months - for yoga versus sham yoga ORs of 14.54 (95% CI 0.67 to 316.69) and for yoga versus no treatment group 17.31 (95% CI 0.80 to 373.45); for Acceptance and Commitment Therapy (ACT) versus yoga ORs of 1.00 (95% Cl 0.16 to 6.42; (ii) reduction in seizure frequency - the Mean Difference between yoga versus sham yoga group was -2.10 (95% CI -3.15 to -1.05) and for yoga versus no treatment group -1.10 (95% CI -1.80 to -0.40); (iii) more than 50% reduction in seizure frequency - for yoga versus sham yoga group ORs of 81.00 (95% CI 4.36 to 1504.46) and for the yoga versus no treatment group 158.33 (95% CI 5.78 to 4335.63); ACT versus yoga ORs of 0.78 (95% Cl 0.04 to 14.75); (iv) more than 50% reduction in seizure duration - for yoga versus sham yoga group ORs of 45.00 (95% CI 2.01 to 1006.75) and for yoga versus no treatment group 53.57 (95% CI 2.42 to 1187.26); ACT versus yoga ORs of 0.67 (95% Cl 0.10 to 4.35). In addition in Panjwani 1996 the authors reported that the one-way analysis of variance revealed no statistically significant differences between the three groups. A P-Lambda test taking into account the P values between the three groups also indicated that the duration of epilepsy in the three groups was not comparable. No data were available regarding quality of life. In Lundgren 2008 the authors reported that there was no significant difference between the yoga and ACT groups in seizure free rates, 50% or greater reduction in seizure frequency or seizure duration at one year follow-up. The yoga group showed significant improvement in their quality of life according to the Satisfaction With Life Scale (SWLS) (P < 0.05), while the ACT group had significant improvement in the World Health Organization Quality of Life-BREF (WHOQOL-BREF) scale (P < 0.01)., Authors' Conclusions: Study of 50 subjects with epilepsy from two trials reveals possible beneficial effect in control of seizures. Results of the overall efficacy analysis show that yoga treatment was better when compared with no intervention or interventions other than yoga (postural exercises mimicking yoga). There was no difference between yoga and Acceptance and Commitment Therapy. However no reliable conclusions can be drawn regarding the efficacy of yoga as a treatment for uncontrolled epilepsy, in view of methodological deficiencies such as limited number of studies, limited number of participants randomised to yoga, lack of blinding and limited data on quality-of-life outcome. Physician blinding would normally be taken to be the person delivering the intervention, whereas we think the 'physician' would in fact be the outcome assessor (who could be blinded), so that would be a reduction in detection bias rather than performance bias. In addition, evidence to inform outcomes is limited and of low quality. Further high-quality research is needed to fully evaluate the efficacy of yoga for refractory epilepsy.
- Published
- 2015
- Full Text
- View/download PDF
24. Subpial transection surgery for epilepsy.
- Author
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Krishnaiah B, Ramaratnam S, and Ranganathan LN
- Subjects
- Anticonvulsants therapeutic use, Epilepsy drug therapy, Humans, Nerve Fibers, Cerebral Cortex surgery, Epilepsy surgery
- Abstract
Background: Nearly 30% of patients with epilepsy continue to have seizures in spite of several antiepileptic drug (AED) regimens. In such cases they are regarded as having refractory, or uncontrolled epilepsy.There is no universally accepted definition for uncontrolled or medically refractory epilepsy, but for the purpose of this review, we will consider seizures to be drug resistant if they failed to respond to a minimum of two AEDs. It is believed that early surgical intervention may prevent seizures at a younger age and improve the intellectual and social status of children. There are many types of surgery for refractory epilepsy with subpial transection being one., Objectives: Our main aim is to determine the benefits and adverse effects of subpial transection for partial-onset seizures and generalised tonic-clonic seizures in children and adults., Search Methods: We searched the Cochrane Epilepsy Group Specialised Register (8 August 2013), The Cochrane Central Register of Controlled Trials (CENTRAL Issue 7 of 12, The Cochrane Library July 2013), and MEDLINE (1946 to 8 August 2013). We did not impose any language restrictions., Selection Criteria: We considered all randomised and quasi-randomised parallel group studies either blinded or non-blinded., Data Collection and Analysis: Two review authors (BK and SR) independently screened the trials identified by the search. The same two authors planned to independently assess the methodological quality of studies. If studies had been identified for inclusion, one author would have extracted the data and the other would have verified it., Main Results: No relevant studies were found., Authors' Conclusions: There is no evidence to support or refute the use of subpial transection surgery for medically refractory cases of epilepsy. Well designed randomised controlled trials are needed in future to guide clinical practice.
- Published
- 2013
- Full Text
- View/download PDF
25. Epilepsy (generalised).
- Author
-
Maguire M, Marson AG, and Ramaratnam S
- Subjects
- Anticonvulsants therapeutic use, Carbamazepine therapeutic use, Humans, Incidence, Phenytoin therapeutic use, Remission Induction, Valproic Acid therapeutic use, Epilepsy diagnosis, Epilepsy, Generalized drug therapy
- Abstract
Introduction: About 3% of people will be diagnosed with epilepsy during their lifetime, but about 70% of people with epilepsy eventually go into remission., Methods and Outcomes: We conducted a systematic review and aimed to answer the following clinical questions: What are the effects of monotherapy in newly diagnosed generalised epilepsy (tonic clonic type)? What are the effects of additional treatments in people with drug-resistant generalised epilepsy? What are the effects of surgery in people with drug-resistant generalised epilepsy? We searched: Medline, Embase, The Cochrane Library, and other important databases up to August 2011 (Clinical Evidence reviews are updated periodically; please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA)., Results: We found 8 systematic reviews, RCTs, or observational studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions., Conclusions: In this systematic review we present information relating to the effectiveness and safety of the following interventions: monotherapy using carbamazepine, gabapentin, lamotrigine, levetiracetam, phenobarbital, phenytoin, sodium valproate, or topiramate; addition of second-line drugs (lamotrigine or levetiracetam) for drug-resistant epilepsy; and hemispherectomy for drug-resistant epilepsy.
- Published
- 2012
26. Ayurvedic treatments for diabetes mellitus.
- Author
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Sridharan K, Mohan R, Ramaratnam S, and Panneerselvam D
- Subjects
- Adult, Diabetes Mellitus drug therapy, Humans, Plant Extracts therapeutic use, Randomized Controlled Trials as Topic, Diabetes Mellitus, Type 2 drug therapy, Medicine, Ayurvedic, Phytotherapy methods, Plant Preparations therapeutic use
- Abstract
Background: Patients with diabetes frequently use complimentary and alternative medications including Ayurvedic medications and hence it is important to determine their efficacy and safety., Objectives: To assess the effects of Ayurvedic treatments for diabetes mellitus., Search Methods: We searched The Cochrane Library (issue 10, 2011), MEDLINE (until 31 August 2011), EMBASE (until 31 August 2011), AMED (until 14 October 2011), the database of randomised trials from South Asia (until 14 October 2011), the database of the grey literature (OpenSigle, until 14 October 2011) and databases of ongoing trials (until 14 October 2011). In addition we performed hand searches of several journals and reference lists of potentially relevant trials., Selection Criteria: We included randomized trials of at least two months duration of Ayurvedic interventions for diabetes mellitus. Participants of both genders, all ages and any type of diabetes were included irrespective of duration of diabetes, antidiabetic treatment, comorbidity or diabetes related complications., Data Collection and Analysis: Two authors independently extracted data. Risk of bias of trials was evaluated as indicated in the Cochrane Handbook for Systematic Reviews of Intervention., Main Results: Results of only a limited number of studies could be combined, in view of different types of interventions and variable quality of data. We found six trials of proprietary herbal mixtures and one of whole system Ayurvedic treatment. These studies enrolled 354 participants ( 172 on treatment, 158 on controls, 24 allocation unknown). The treatment duration ranged from 3 to 6 months. All these studies included adults with type 2 diabetes mellitus.With regard to our primary outcomes, significant reductions in glycosylated haemoglobin A1c (HbA1c), fasting blood sugar (FBS) or both were observed with Diabecon, Inolter and Cogent DB compared to placebo or no additional treatment, while no significant hypoglycaemic response was found with Pancreas tonic and Hyponidd treatment. The study of whole system Ayurvedic treatment did not provide data on HbA1c and FBS values. One study of Pancreas tonic treatment did not detect a significant change in health-related quality of life. The main adverse effects reported were drug hypersensitivity (one study, one patient in the treatment arm); hypoglycaemic episodes (one study, one participant in the treatment arm; none had severe hypoglycaemia) and gastrointestinal side effects in one study (1 of 20 in the intervention group and 0 of 20 participants in the control group). None of the included studies reported any deaths, renal, hematological or liver toxicity.With regard to our secondary outcomes, post prandial blood sugar (PPBS) was lower among participants treated with Diabecon, was unchanged with Hyponidd and was higher in patients treated with Cogent DB. Treatment with Pancreas tonic and Hyponidd did not affect lipid profile significantly, while patients treated with Inolter had significantly higher HDL- and lower LDL-cholesterol as well as lower triglycerides. Cogent DB treated participants also had lower total cholesterol and triglycerides.Studies of treatment with Diabecon reported increased fasting insulin levels; one study of treatment with Diabecon reported higher stimulated insulin levels and fasting C-peptide levels in the treatment group. There was no significant difference in fasting and stimulated C-peptide and insulin levels with Hyponidd, Cogent DB and Pancreas tonic treatment. The study of Inolter did not assess these outcomes.No study reported on or was designed to investigate diabetic complications, death from any cause and economic data., Authors' Conclusions: Although there were significant glucose-lowering effects with the use of some herbal mixtures, due to methodological deficiencies and small sample sizes we are unable to draw any definite conclusions regarding their efficacy. Though no significant adverse events were reported, there is insufficient evidence at present to recommend the use of these interventions in routine clinical practice and further studies are needed.
- Published
- 2011
- Full Text
- View/download PDF
27. Epilepsy (partial).
- Author
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Maguire M, Marson AG, and Ramaratnam S
- Subjects
- Epilepsies, Partial drug therapy, Humans, Phenytoin therapeutic use, Vigabatrin therapeutic use, Anticonvulsants administration & dosage, Epilepsy drug therapy
- Abstract
Introduction: About 3% of people will be diagnosed with epilepsy during their lifetime, but about 70% of people with epilepsy eventually go into remission., Methods and Outcomes: We conducted a systematic review and aimed to answer the following clinical questions: What are the effects of starting antiepileptic drug treatment following a single seizure? What are the effects of drug monotherapy in people with partial epilepsy? What are the effects of additional drug treatments in people with drug-resistant partial epilepsy? What is the risk of relapse in people in remission when withdrawing antiepileptic drugs? What are the effects of behavioural and psychological treatments for people with epilepsy? What are the effects of surgery in people with drug-resistant temporal lobe epilepsy? We searched: Medline, Embase, The Cochrane Library, and other important databases up to July 2009 (Clinical Evidence reviews are updated periodically; please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA)., Results: We found 83 systematic reviews, RCTs, or observational studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions., Conclusions: In this systematic review we present information relating to the effectiveness and safety of the following interventions: antiepileptic drugs after a single seizure; monotherapy for partial epilepsy using carbamazepine, gabapentin, lamotrigine, levetiracetam, phenobarbital, phenytoin, sodium valproate, or topiramate; addition of second-line drugs for drug-resistant partial epilepsy (allopurinol, eslicarbazepine, gabapentin, lacosamide, lamotrigine, levetiracetam, losigamone, oxcarbazepine, retigabine, tiagabine, topiramate, vigabatrin, or zonisamide); antiepileptic drug withdrawal for people with partial or generalised epilepsy who are in remission; behavioural and psychological treatments for partial or generalised epilepsy (biofeedback, cognitive behavioural therapy (CBT), educational programmes, family counselling, relaxation therapy (alone or plus behavioural modification therapy, yoga); and surgery for drug-resistant temporal lobe epilepsy ( lesionectomy, temporal lobectomy, vagus nerve stimulation as adjunctive therapy).
- Published
- 2011
28. Epilepsy (partial).
- Author
-
Maguire M, Marson AG, and Ramaratnam S
- Subjects
- Clinical Trials as Topic, Cost-Benefit Analysis, Epilepsies, Partial drug therapy, Humans, Phenytoin therapeutic use, Vigabatrin therapeutic use, Anticonvulsants administration & dosage, Epilepsy drug therapy
- Abstract
Introduction: About 3% of people will be diagnosed with epilepsy during their lifetime, but about 70% of people with epilepsy eventually go into remission., Methods and Outcomes: We conducted a systematic review and aimed to answer the following clinical questions: What are the effects of starting antiepileptic drug treatment following a single seizure? What are the effects of drug monotherapy in people with partial epilepsy? What are the effects of additional drug treatments in people with drug-resistant partial epilepsy? What is the risk of relapse in people in remission when withdrawing antiepileptic drugs? What are the effects of behavioural and psychological treatments for people with epilepsy? What are the effects of surgery in people with drug-resistant temporal lobe epilepsy? We searched: Medline, Embase, The Cochrane Library, and other important databases up to July 2009 (Clinical Evidence reviews are updated periodically; please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA)., Results: We found 83 systematic reviews, RCTs, or observational studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions., Conclusions: In this systematic review we present information relating to the effectiveness and safety of the following interventions: antiepileptic drugs after a single seizure; monotherapy for partial epilepsy using carbamazepine, gabapentin, lamotrigine, levetiracetam, phenobarbital, phenytoin, sodium valproate, or topiramate; addition of second-line drugs for drug-resistant partial epilepsy (allopurinol, eslicarbazepine, gabapentin, lacosamide, lamotrigine, levetiracetam, losigamone, oxcarbazepine, retigabine, tiagabine, topiramate, vigabatrin, or zonisamide); antiepileptic drug withdrawal for people with partial or generalised epilepsy who are in remission; behavioural and psychological treatments for partial or generalised epilepsy (biofeedback, cognitive behavioural therapy (CBT), educational programmes, family counselling, relaxation therapy (alone or plus behavioural modification therapy, yoga); and surgery for drug-resistant temporal lobe epilepsy ( lesionectomy, temporal lobectomy, vagus nerve stimulation as adjunctive therapy).
- Published
- 2010
29. Epilepsy (generalised).
- Author
-
Maguire M, Marson AG, and Ramaratnam S
- Subjects
- Anticonvulsants therapeutic use, Carbamazepine therapeutic use, Humans, Incidence, Phenytoin therapeutic use, Remission Induction, Valproic Acid therapeutic use, Epilepsy drug therapy, Epilepsy, Generalized drug therapy
- Abstract
Introduction: About 3% of people will be diagnosed with epilepsy during their lifetime, but about 70% of people with epilepsy eventually go into remission., Methods and Outcomes: We conducted a systematic review and aimed to answer the following clinical questions: What are the effects of monotherapy in newly diagnosed generalised epilepsy (tonic clonic type)? What are the effects of additional treatments in people with drug-resistant generalised epilepsy? What are the effects of surgery in people with drug-resistant generalised epilepsy? We searched: Medline, Embase, The Cochrane Library, and other important databases up to July 2009 (Clinical Evidence reviews are updated periodically; please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA)., Results: We found eight systematic reviews, RCTs, or observational studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions., Conclusions: In this systematic review we present information relating to the effectiveness and safety of the following interventions: monotherapy using carbamazepine, gabapentin, lamotrigine, levetiracetam, phenobarbital, phenytoin, sodium valproate, or topiramate; addition of second-line drugs (lamotrigine or levetiracetam) for drug-resistant epilepsy; and hemispherectomy for drug-resistant epilepsy.
- Published
- 2010
30. Anthelmintics for people with neurocysticercosis.
- Author
-
Abba K, Ramaratnam S, and Ranganathan LN
- Subjects
- Adrenal Cortex Hormones therapeutic use, Adult, Albendazole therapeutic use, Brain Diseases parasitology, Child, Humans, Praziquantel therapeutic use, Randomized Controlled Trials as Topic, Trichlorfon therapeutic use, Anticestodal Agents therapeutic use, Brain Diseases drug therapy, Neurocysticercosis drug therapy
- Abstract
Background: Neurocysticercosis is an infection of the brain by the larval stage of the pork tapeworm. In endemic areas it is a common cause of epilepsy. Anthelmintics (albendazole or praziquantel) may be given to kill the parasites. However, there are potential adverse effects, and the parasites may eventually die without treatment., Objectives: To assess the effectiveness and safety of anthelmintics for people with neurocysticercosis., Search Strategy: In May 2009 we searched the Cochrane Infectious Diseases Group Specialized Register, CENTRAL (The Cochrane Library 2009, Issue 2), MEDLINE, EMBASE, LILACS, and the mRCT., Selection Criteria: Randomized controlled trials comparing anthelmintics with placebo, no anthelmintic, or other anthelmintic regimen for people with neurocysticercosis., Data Collection and Analysis: Two authors independently selected trials, extracted data, and assessed each trial's risk of bias. We calculated risk ratios (RR) for dichotomous variables, with 95% confidence intervals (CI). We pooled data from trials with similar interventions and outcomes., Main Results: For viable lesions in children, there were no trials. For viable lesions in adults, no difference was detected for albendazole compared with no treatment for recurrence of seizures (116 participants, one trial); but fewer participants with albendazole had lesions at follow up (RR 0.56, 95% CI 0.45 to 0.70; 192 participants, two trials).For non-viable lesions in children, seizures recurrence was less common with albendazole compared with no treatment (RR 0.49, 95% CI 0.32 to 0.75; 329 participants, four trials). There was no difference detected in the persistence of lesions at follow up (570 participants, six trials). For non-viable lesions in adults, there were no trials.In trials including viable, non-viable or mixed lesions (in both children and adults), headaches were more common with albendazole alone (RR 9.49, 95% CI 1.40 to 64.45; 106 participants, two trials), but no difference was detected in one trial giving albendazole with corticosteroids (116 participants, one trial)., Authors' Conclusions: In patients with viable lesions, evidence from trials of adults suggests albendazole may reduce the number of lesions. In trials of non-viable lesions, seizure recurrence was substantially lower with albendazole, which is counter-intuitive. It may be that steroids influence headache during treatment, but further research is needed to test this.
- Published
- 2010
- Full Text
- View/download PDF
31. Once-daily extended-release levetiracetam as adjunctive treatment of partial-onset seizures in patients with epilepsy: a double-blind, randomized, placebo-controlled trial.
- Author
-
Peltola J, Coetzee C, Jiménez F, Litovchenko T, Ramaratnam S, Zaslavaskiy L, Lu ZS, and Sykes DM
- Subjects
- Adolescent, Adult, Adverse Drug Reaction Reporting Systems, Aged, Anticonvulsants adverse effects, Delayed-Action Preparations, Double-Blind Method, Drug Administration Schedule, Drug Therapy, Combination, Female, Humans, Levetiracetam, Male, Middle Aged, Piracetam administration & dosage, Piracetam adverse effects, Prospective Studies, Treatment Outcome, Young Adult, Anticonvulsants administration & dosage, Epilepsies, Partial drug therapy, Piracetam analogs & derivatives
- Abstract
Purpose: Double-blind randomized trial to assess efficacy and tolerability of once-daily extended-release levetiracetam (LEV XR) tablets (2 x 500 mg) as add-on therapy in patients (12-70 years old) with partial-onset seizures (POS) refractory to one to three antiepileptic drugs., Methods: After an 8-week prospective baseline-period, eligible patients were randomized (1:1) to once-daily LEV XR 1,000 mg/day or placebo for 12 weeks. Evaluations included changes from baseline in POS-frequency/week, responders (>or=50% reduction in POS-frequency/week), seizure-freedom, adverse events, laboratory tests, physical and neurologic examinations, vital signs, body-weight, and 12-lead electrocardiogram., Results: Of 188 patients screened, 158 were randomized (intention-to-treat population): LEV XR (n = 79) or placebo (n = 79). Seventy-one (89.9%) LEV XR and 72 (91.1%) placebo patients completed the trial. Median POS-frequency/week reduction was 46.1% on LEV XR and 33.4% on placebo. Estimated reduction with LEV XR over placebo was 14.4% (p = 0.038). Thirty-four (43%) LEV XR and 23 (29.1%) placebo patients experienced >or=50% reduction in POS-frequency/week. Eight (10.1%) patients receiving LEV XR and one (1.3%) receiving placebo were free of POS during the 12-week treatment period. Forty-one (53.2%) LEV XR and 43 (54.4%) placebo patients reported >or=1 adverse event. Adverse events reported with an incidence >5% and seen more often with LEV XR than with placebo were somnolence, influenza, irritability, nasopharyngitis, dizziness, and nausea., Discussion: Once-daily LEV XR 1,000 mg was effective and well-tolerated as adjunct therapy in patients with POS. Ten percent of patients randomized to LEV XR experienced freedom from POS. These results support the clinical value of this new LEV XR formulation.
- Published
- 2009
- Full Text
- View/download PDF
32. Epilepsy.
- Author
-
Marson AG, Maguire M, and Ramaratnam S
- Subjects
- Anticonvulsants administration & dosage, Clinical Trials as Topic, Cost-Benefit Analysis, Drug Resistant Epilepsy, Epilepsies, Partial drug therapy, Epilepsy, Generalized drug therapy, Humans, Epilepsy drug therapy, Seizures drug therapy
- Abstract
Introduction: About 3% of people will be diagnosed with epilepsy during their lifetime, but about 70% of people with epilepsy eventually go into remission., Methods and Outcomes: We conducted a systematic review and aimed to answer the following clinical questions: What are the benefits and risks of starting anti-epileptic drug treatment following a single seizure? What are the effects of monotherapy in newly diagnosed partial epilepsy, and in newly diagnosed generalised epilepsy (tonic clonic type)? What are the effects of additional treatments in people with drug-resistant partial epilepsy? Which people in remission from seizures are at risk of relapse on withdrawal of drug treatment? What are the effects of behavioural and psychological treatments for people with epilepsy? What are the effects of surgery in people with drug-resistant temporal lobe epilepsy? We searched: Medline, Embase, The Cochrane Library, and other important databases up to April 2007 (Clinical Evidence reviews are updated periodically; please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA)., Results: We found 59 systematic reviews, RCTs, or observational studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions., Conclusions: In this systematic review we present information relating to the effectiveness and safety of the following interventions: addition of second-line drugs (gabapentin, levetiracetam, lamotrigine, oxcarbazepine, tiagabine, topiramate, vigabatrin, or zonisamide), amygdalohippocampectomy, anti-epileptic drug withdrawal for people in remission, anti-epileptic drugs after a single seizure, biofeedback, carbamazepine, cognitive behavioural therapy (CBT), educational programmes, family counselling, hemispherectomy, lesionectomy, phenobarbital, phenytoin, relaxation therapy (alone or plus behavioural modification therapy), sodium valproate, temporal lobectomy, topiramate, vagus nerve stimulation as adjunctive therapy for partial seizures, and yoga.
- Published
- 2009
33. Psychological treatments for epilepsy.
- Author
-
Ramaratnam S, Baker GA, and Goldstein LH
- Subjects
- Biofeedback, Psychology, Cognitive Behavioral Therapy, Humans, Patient Education as Topic, Relaxation Therapy, Epilepsy therapy, Psychotherapy methods
- Abstract
Background: Psychological interventions such as relaxation therapy, cognitive behaviour therapy, bio-feedback and educational interventions have been used alone or in combination in the treatment of epilepsy, to reduce the seizure frequency and improve the quality of life., Objectives: To assess whether the treatment of epilepsy with psychological methods is effective in reducing seizure frequency and/or leads to a better quality of life., Search Strategy: We searched the Cochrane Epilepsy Group's Specialized Register (1 July 2007), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library Issue 3, 2007), and MEDLINE (1966 to March 2007). No language restrictions were imposed. We checked the reference lists of retrieved studies for additional reports of relevant studies., Selection Criteria: Randomized or quasi-randomized studies assessing one or more types of psychological or behaviour modification techniques for people with epilepsy., Data Collection and Analysis: Two review authors independently assessed the trials for inclusion and extracted data. Primary analyses were by intention to treat. Outcomes included reduction in seizure frequency and quality of life., Main Results: We found three small trials (50 participants) of relaxation therapy. They were of poor methodological quality and a meta-analysis was therefore not undertaken. No study found a significant effect of relaxation therapy on seizure frequency. Two trials found cognitive behavioural therapy (CBT) to be effective in reducing depression, among people with epilepsy with a depressed affect, whilst another did not. Two trials of CBT found improvement in quality of life scores. One trial of group cognitive therapy found no significant effect on seizure frequency while another trial found statistically significant reduction in seizure frequency as well as in seizure index (product of seizure frequency and seizure duration in seconds) among subjects treated with CBT. Two trials of combined relaxation and behaviour therapy and one of EEG bio-feedback and four of educational interventions did not provide sufficient information to assess their effect on seizure frequency. One small study of galvanic skin response biofeedback reported significant reduction in seizure frequency. Combined use of relaxation and behaviour modification was found beneficial for anxiety and adjustment in one study. In one study EEG bio-feedback was found to improve the cognitive and motor functions in individuals with greatest seizure reduction. Educational interventions were found to be beneficial in improving the knowledge and understanding of epilepsy, coping with epilepsy, compliance to medication and social competencies., Authors' Conclusions: In view of methodological deficiencies and limited number of individuals studied, we have found no reliable evidence to support the use of these treatments and further trials are needed.
- Published
- 2008
- Full Text
- View/download PDF
34. Rapid versus slow withdrawal of antiepileptic drugs.
- Author
-
Ranganathan LN and Ramaratnam S
- Subjects
- Anticonvulsants adverse effects, Child, Humans, Recurrence, Remission Induction, Risk Factors, Time Factors, Anticonvulsants administration & dosage, Epilepsy drug therapy
- Abstract
Background: The ideal objective of treating a person with epilepsy is to induce remission by usage of antiepileptic drugs (AEDs) and withdraw the AEDs without causing seizure recurrence. Prolonged usage of AEDs may have long-term side effects. Hence when a person with epilepsy is in remission (free of seizures for some time) it is logical to attempt to discontinue the medication. The timing of withdrawal and the mode of withdrawal arise while contemplating withdrawal of AEDs. This review proposes to examine the evidence for the rate of withdrawal of AEDs (whether rapid or slow tapering) and its effect on recurrence of seizure. This review also examines the effect of variables such as age of seizure onset, seizure types, presence of neurological deficits, mental subnormality, aetiology of epilepsy, type of AED, EEG findings or duration of seizure freedom on the risk of recurrence of seizures with the two tapering regimens., Objectives: (1) To quantify risk of seizure recurrence after rapid (taper period of three months or less) or slow (taper period or more than three months) discontinuation of antiepileptic drugs in adults with epilepsy who are in remission. (2) To quantify the risk of seizure recurrence after rapid (taper period of three months or less) or slow (taper period of more than three months) discontinuation of antiepileptic drugs in children with epilepsy who are in remission. (3) To attempt to assess which variables modify the risk of seizure recurrence., Search Strategy: We searched the Cochrane Epilepsy Group's Specialized Register (August 2005), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library Issue 3, 2005), MEDLINE (1966 to September 2004) and cross-references from identified studies. No language restrictions were imposed., Selection Criteria: Randomized controlled trials that evaluate withdrawal of AEDs in a rapid or slow manner after varying periods of seizure control in patients with epilepsy., Data Collection and Analysis: Both review authors independently assessed the trials for inclusion and extracted the data. The outcomes assessed included seizure relapse (i.e. the percentage of patients experiencing seizure recurrence after withdrawal of AED); time to recurrence of seizure following withdrawal; occurrence of status epilepticus; mortality; morbidity due to seizure such as injuries, fractures, aspiration pneumonia; and quality of life (if assessed by validated scale)., Main Results: One trial with weak methodology involving 149 children was included with a mean age of seizure onset of four years, mean age of 11 years at the time of starting the taper. The rapid taper group (six weeks) recruited 81 participants and the slow taper group (nine months) included 68 participants, out of whom 11 and 5 were lost to follow up even before the taper began respectively. The number of participants who were seizure free in the rapid and slow taper groups were 40 and 44 respectively at the end of one year follow up (OR 0.53, 95% CI 0.27 to 1.03); 30 and 29 respectively at the end of two years, (OR 0.79, 95% CI 0.41 to 1.53); 24 and 14 respectively at the end of three years (OR 1.62, 95% CI 0.76 to 3.46); 18 and 8 respectively at the end of four years (OR 2.14, 95% CI 0.87 to 5.3); 10 and 6 respectively at the end of five years (OR 1.46, 95% CI 0.5 to 4.23)., Authors' Conclusions: In view of methodological deficiencies and small sample size, in the solitary study identified, we cannot derive any reliable conclusions regarding the optimal rate of tapering of AEDs. Further studies are needed in adults as well as in children to investigate the rate of withdrawal of AEDs and to study the effects of variables such as seizure types, its aetiology, mental retardation, EEG abnormalities, presence of neurological deficits and other co-morbidities on the rate of tapering.
- Published
- 2006
- Full Text
- View/download PDF
35. Epilepsy.
- Author
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Marson A and Ramaratnam S
- Subjects
- Anticonvulsants therapeutic use, Cognitive Behavioral Therapy, Epilepsies, Partial drug therapy, Epilepsy therapy, Humans, Patient Education as Topic, Relaxation Therapy, Epilepsy drug therapy
- Published
- 2005
36. Vitamins for epilepsy.
- Author
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Ranganathan LN and Ramaratnam S
- Subjects
- Anticonvulsants adverse effects, Anticonvulsants antagonists & inhibitors, Folic Acid therapeutic use, Humans, Randomized Controlled Trials as Topic, Thiamine therapeutic use, Vitamin A therapeutic use, Vitamin D therapeutic use, Epilepsy prevention & control, Vitamins therapeutic use
- Abstract
Background: Vitamins have been reported to be effective in controlling certain types of seizures and to prevent some of the harmful effects of antiepileptic drugs (AEDs). In this review we will summarize evidence from randomized controlled trials., Objectives: To assess if vitamins improve seizure control, reduce adverse effects of AEDs or improve the quality of life in people with epilepsy., Search Strategy: We searched MEDLINE from 1966 to 2004, the Cochrane Epilepsy Group trials register (December 2004), CENTRAL (the Cochrane Controlled Trials Register) (TheCochraneLibrary Issue 4, 2004), and cross-references from identified studies., Selection Criteria: Randomized or quasi-randomized studies investigating the effects of one or more vitamins given alone or in addition to AEDs to people of any age with any type of epilepsy., Data Collection and Analysis: Both reviewers assessed the trials for inclusion and extracted the data. Outcomes assessed included seizure frequency, gingival hyperplasia, neuropathy, changes in bone mineral content, serum calcium, alkaline phosphatase, hemogram, serum levels of AEDs, neuropsychological and quality of life outcomes. Primary analyses were by intention to treat., Main Results: Fifteen studies met our inclusion criteria and were of poor methodological quality. None described randomization methods and most enrolled small numbers of participants. Nine studies (331 participants) investigated folic acid. Two studies (75 participants) found no effect for the outcome 50% or greater reduction in seizure frequency (OR 0.96; 95% CI 0.32 to 2.29). Also, no evidence was found for an effect on gingival health, intelligence, behavior, mental health or personality, or measures of red blood volume and hemoglobin content. Folic acid was not associated with any consistent changes in serum phenytoin or phenobarbitone levels or improvement in the mean motor conduction velocities of peripheral nerves. One small study (72 participants) found that thiamine improves neuropsychological functions related to psychomotor speed, visuospatial abilities, selective attention and verbal abstracting ability. One study (226 participants) found a significantly higher bone mineral content (BMC) among patients with epilepsy taking AEDs with vitamin D supplementation compared to controls who were not given supplementation (OR 3.6; 95% CI 2.48 to 4.72; p < 0.00001). The studies found no significant effects on serum calcium, alkaline phosphatase or general well-being. One small study (24 participants) found a significant decrease in seizure frequency in those treated with vitamin E compared to placebo (p = 0.00005; Peto OR 26.73; 95% CI 5.46 to 130.92)., Authors' Conclusions: In view of methodological deficiencies and limited number of individual studies, we have found no reliable evidence to support the routine use of vitamins in patients with epilepsy. Further trials are needed, especially to assess the utility of vitamin D supplementation to prevent osteomalacia and the role of vitamin E on seizures and thiamine in improving cognitive functions.
- Published
- 2005
- Full Text
- View/download PDF
37. Epilepsy.
- Author
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Marson A and Ramaratnam S
- Subjects
- Anticonvulsants administration & dosage, Anticonvulsants therapeutic use, Behavior Therapy, Epilepsies, Partial drug therapy, Epilepsy therapy, Humans, Patient Education as Topic, Relaxation Therapy, Seizures drug therapy, Epilepsy drug therapy
- Published
- 2003
38. Epilepsy.
- Author
-
Marson A and Ramaratnam S
- Subjects
- Adolescent, Adult, Anticonvulsants administration & dosage, Anticonvulsants adverse effects, Child, Complementary Therapies, Drug Therapy, Combination, Epilepsies, Partial diagnosis, Epilepsies, Partial etiology, Epilepsy, Generalized diagnosis, Epilepsy, Generalized etiology, Humans, Randomized Controlled Trials as Topic, Treatment Outcome, Epilepsies, Partial drug therapy, Epilepsy, Generalized drug therapy
- Published
- 2002
39. Psychological treatments for epilepsy.
- Author
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Ramaratnam S, Baker GA, and Goldstein L
- Subjects
- Biofeedback, Psychology, Cognitive Behavioral Therapy, Humans, Patient Education as Topic, Relaxation Therapy, Epilepsy therapy, Psychotherapy
- Abstract
Background: Psychological interventions such as relaxation therapy, cognitive behaviour therapy, EEG bio-feedback and educational interventions have been used alone or in combination in the treatment of epilepsy, to reduce the seizure frequency and improve the quality of life., Objectives: To assess whether the treatment of epilepsy with psychological methods is effective in reducing seizure frequency and/or leads to a better quality of life., Search Strategy: We searched the Cochrane Epilepsy Group trial register, the Cochrane Controlled Trials Register (Cochrane Library Issue 2, 2001), MEDLINE using OVID (1966 - May 2001) and cross references from identified publications., Selection Criteria: Randomized or quasi-randomized studies assessing one or more types of psychological or behaviour modification techniques for patients with epilepsy., Data Collection and Analysis: Two reviewers independently assessed the trials for inclusion and extracted data. Primary analyses were by intention to treat. Outcomes included reduction in seizure frequency, and quality of life., Main Results: We found three small trials (50 patients) of relaxation therapy. They were of poor methodological quality and a meta-analysis was therefore not undertaken. No study found a significant effect of relaxation therapy on seizure frequency. One trial found cognitive behavioural therapy to be effective in reducing depression, among people with epilepsy with a depressed affect, whilst another did not. One trial of group cognitive therapy found no significant effect on seizure frequency. Two trials of combined relaxation and behaviour therapy and one of EEG bio-feedback and two of educational interventions did not provide sufficient information to assess their effect on seizure frequency. Combined use of relaxation and behaviour modification was found beneficial for anxiety and adjustment in one study. In one study EEG bio-feedback was found to improve the cognitive and motor functions in subjects with greatest seizure reduction. Educational interventions were found to be beneficial in improving the knowledge and understanding of epilepsy, improving compliance to medication and improving social competencies., Reviewer's Conclusions: In view of methodological deficiencies and limited number of patients studied, we have found no reliable evidence to support the use of these treatments and further trials are needed.
- Published
- 2001
- Full Text
- View/download PDF
40. Lamotrigine add-on for drug-resistant partial epilepsy.
- Author
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Ramaratnam S, Marson AG, and Baker GA
- Subjects
- Anticonvulsants adverse effects, Cognition drug effects, Cross-Over Studies, Drug Resistance, Drug Therapy, Combination, Humans, Lamotrigine, Quality of Life, Randomized Controlled Trials as Topic, Triazines adverse effects, Anticonvulsants administration & dosage, Epilepsies, Partial drug therapy, Triazines administration & dosage
- Abstract
Background: Epilepsy is a common neurological disorder, affecting almost 0.5 to 1% of the population. Nearly 30% of patients with epilepsy are refractory to currently available drugs. Lamotrigine is one of the newer antiepileptic drugs and is the topic of this review., Objectives: To examine the effects of lamotrigine on seizures, side effects, cognition and quality of life, when used as an add-on treatment for patients with drug-resistant partial epilepsy., Search Strategy: We searched the Cochrane Epilepsy Group trials register, the Cochrane Controlled Trials Register (Cochrane Library Issue 2, 2001), MEDLINE (January 1966 to April 2001) and reference lists of articles. We also contacted the manufacturers of lamotrigine (Glaxo-Wellcome)., Selection Criteria: Randomized placebo controlled trials, of patients with drug-resistant partial epilepsy of any age, in which an adequate method of concealment of randomization was used. The studies may be double, single or unblinded. For crossover studies, the first treatment period was treated as a parallel trial., Data Collection and Analysis: Two reviewers independently assessed the trials for inclusion and extracted data. Primary analyses were by intention to treat. Outcomes included 50% or greater reduction in seizure frequency, treatment withdrawal (any reason), side effects, effects on cognition, and quality of life., Main Results: We found three parallel add-on studies and eight cross-over studies, which included 1243 patients (199 children and 1044 adults). The overall Peto's Odds Ratio (OR) and 95% confidence intervals (CIs) across all studies for 50% or greater reduction in seizure frequency was 2.71 (1.87, 3.91) indicating that lamotrigine is significantly more effective than placebo in reducing seizure frequency. The overall OR (95%CI) for treatment withdrawal (for any reason) is 1.12 (0.78, 1.61). The 99% CIs for ataxia, dizziness, nausea, and diplopia do not include unity, indicating that they are significantly associated with lamotrigine. The limited data available precludes any conclusions about effects on cognition and quality of life, though there may be minor benefits in affect balance (happiness) and mastery., Reviewer's Conclusions: Lamotrigine add-on therapy is effective in reducing the seizure frequency, in patients with drug-resistant partial epilepsy. Further trials are needed to assess the long term effects of lamotrigine, and to compare it with other add-on drugs.
- Published
- 2001
- Full Text
- View/download PDF
41. Yoga for epilepsy: methodological issues.
- Author
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Ramaratnam S
- Subjects
- Humans, Complementary Therapies methods, Epilepsy therapy, Research Design, Yoga
- Abstract
This article deals with the methodological issues that might be encountered in designing and conducting a randomized controlled study of the efficacy of yoga in the treatment of epilepsy. Methodological issues relating to patient selection, randomization, blinding, type of intervention, outcome measures and analysis are highlighted., (Copyright 2001 BEA Trading Ltd.)
- Published
- 2001
- Full Text
- View/download PDF
42. Lamotrigine add-on for drug-resistant partial epilepsy.
- Author
-
Ramaratnam S, Marson AG, and Baker GA
- Subjects
- Anticonvulsants adverse effects, Cognition drug effects, Cross-Over Studies, Drug Resistance, Drug Therapy, Combination, Humans, Lamotrigine, Quality of Life, Randomized Controlled Trials as Topic, Triazines adverse effects, Anticonvulsants administration & dosage, Epilepsies, Partial drug therapy, Triazines administration & dosage
- Abstract
Background: Epilepsy is a common neurological disorder, affecting almost 0.5 to 1% of the population. Nearly 30% of patients with epilepsy are refractory to currently available drugs. Lamotrigine is one of the newer antiepileptic drugs and is the topic of this review., Objectives: To examine the effects of lamotrigine on seizures, side effects, cognition and quality of life, when used as an add-on treatment for patients with drug-resistant partial epilepsy., Search Strategy: We searched the Cochrane Epilepsy Group trials register, the Cochrane Controlled Trials Register (Cochrane Library Issue 1, 2000), MEDLINE (January 1966 to December 1999) and reference lists of articles. We also contacted the manufacturers of lamotrigine (Glaxo-Wellcome)., Selection Criteria: Randomized placebo controlled trials, of patients with drug-resistant partial epilepsy of any age, in which an adequate method of concealment of randomization was used. The studies may be double, single or unblinded. For crossover studies, the first treatment period was treated as a parallel trial., Data Collection and Analysis: Two reviewers independently assessed the trials for inclusion and extracted data. Primary analyses were by intention to treat. Outcomes included 50% or greater reduction in seizure frequency, treatment withdrawal (any reason), side effects, effects on cognition, and quality of life., Main Results: We found three parallel add-on studies and eight cross-over studies, which included 1243 patients (199 children and 1044 adults). The overall Peto's Odds Ratio (OR) and 95% confidence intervals (CIs) across all studies for 50% or greater reduction in seizure frequency was 2.71 (1.87, 3.91) indicating that lamotrigine is significantly more effective than placebo in reducing seizure frequency. The overall OR (95%CI) for treatment withdrawal (for any reason) is 1.12 (0.78, 1. 61). The 99% CIs for ataxia, dizziness, nausea, and diplopia do not include unity, indicating that they are significantly associated with lamotrigine. The limited data available preclude any conclusions about effects on cognition and quality of life, though there may be minor benefits in affect balance (happiness) and mastery., Reviewer's Conclusions: Lamotrigine add-on therapy is effective in reducing the seizure frequency, in patients with drug-resistant partial epilepsy. Further trials are needed to assess the long term effects of lamotrigine, and to compare it with other add-on drugs.
- Published
- 2000
- Full Text
- View/download PDF
43. Yoga for epilepsy.
- Author
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Ramaratnam S and Sridharan K
- Subjects
- Complementary Therapies, Epilepsy etiology, Humans, Stress, Psychological complications, Stress, Psychological therapy, Epilepsy therapy, Yoga
- Abstract
Background: Stress is considered an important precipitating factor for seizures. Yoga is believed to induce relaxation and stress reduction. The effect of yoga on the EEG and the autonomic nervous system have been reported. Yoga would be an attractive therapeutic option for epilepsy (if proved effective), in view of its nonpharmacological nature, minimal side effects and international acceptance., Objectives: To assess the efficacy of yoga in the treatment of patients with epilepsy., Search Strategy: We searched the Cochrane Epilepsy Group trial register, the Cochrane Controlled Trials Register (The Cochrane Library Issue 4, 1998), MEDLINE for articles published up to the middle of 1998, and also registries of the research council for complimentary medicine were searched. In addition, we searched the references of all the identified studies. Finally, we contacted the members of the Neurological Society of India, several neurophysiology institutions and yoga institutes to seek any ongoing studies or studies published in nonindexed journals or unpublished studies., Selection Criteria: Randomized control trials and controlled clinical trials of treatment of epilepsy with yoga., Data Collection and Analysis: The data were extracted independently by both reviewers and any discrepancies were resolved by discussion. The main outcomes assessed were percentage of patients rendered seizure free, number of patients with more than 50% reduction in seizure frequency or seizure duration and the overall reduction in seizure frequency. Analyses were on an intention to treat basis., Main Results: Only one study met the selection criteria, and recruited a total of 32 patients, 10 to sahaja yoga and 22 to control treatments. Antiepileptic drugs were continued in all. Randomization was by roll of a dice. The results of this study are as follows: (i) Four patients treated with yoga were seizure free for six months compared to none in the control groups. The Odds Ratio (OR) (95% Confidence Interval (CI)) for yoga versus sham yoga group was 14.5 (0.7, 316.7) and for yoga versus no treatment group 17.3 (0.8, 373.5). (ii) Nine patients in the yoga group had more than 50% reduction in seizure frequency compared to only one among the controls. The OR (95% CI) for yoga versus sham yoga group was 81 (4.4, 1504.5) and for the yoga versus no treatment group was 158.3 (5.8, 4335.9). (iii) There was a decline in the average number of attacks per month compared to the baseline frequency among the patients treated with yoga. The weighted mean difference ( 95% CI) between yoga versus sham yoga group was -2.1 (-3.1, -1.0) and for the yoga versus no treatment group -1.1 (-1.8, -0.4). (iv) More than 50% reduction in seizure duration was found in seven of the 10 patients treated with yoga, compared to none among the 22 controls. The OR (95%CI) for yoga versus sham yoga group was 45 (2.0, 1006.8) and for yoga versus no treatment group 53.57 (2.4, 1187.3)., Reviewer's Conclusions: No reliable conclusions can be drawn regarding the efficacy of yoga as a treatment for epilepsy. Further studies are necessary to evaluate the efficacy of yoga in the treatment of epilepsy.
- Published
- 2000
- Full Text
- View/download PDF
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