992 resultados para insulated gate bipolar transistor (IGBT)


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Self-management is emerging as a viable alternative to difficult-to-access psychosocial treatments for bipolar disorder (BD), and has particular relevance to recovery-related goals around empowerment and personal meaning. This review examines data and theory on BD self-management from a recovery-oriented perspective, with a particular focus on optimizing low-intensity delivery of self-management tools via the web.

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This study aimed to evaluate the relationship between oxidative stress markers and cognitive functions and domains of psychosocial functioning in bipolar disorder.

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The treatment alliance is the arena in which psychopharmacological and other therapeutic interventions occur. The nature and quality of the treatment alliance may affect adherence to treatment and the realization of the benefits of effective pharmacological treatment in clinical practice. It is an area that has attracted little systematic study, despite the available evidence suggesting that it plays a measurable role in clinical outcomes.

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Staging models are widely used in clinical medicine, and offer an insight into the progressive nature of many disorders. In general, the earlier stages of illness may be associated with a better prognosis and a higher treatment response. Once chronicity is reached, more complex and invasive treatments may be required, and the utility of treatments may decline. There is evidence that treatment response is greatest in the early phases of the disorder. There is also a progressive social and psychological burden of ongoing illness. This is paralleled by the twin notions of neuroprotection, which is supported by increasing evidence that structural changes in the disorder may be progressive and reversible with algorithm appropriate treatment, and that of early intervention, which posits that the optimal window for intervention is early in the illness course. A staging model compliments existing and proposed classifications of bipolar disorder, adding a temporal dimension to a cross sectional view. It may inform treatment choice and prognosis, and could have utility as a course specifier.

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Lamotrigine has emerged with a distinct place in the pharmacological treatment of bipolar disorder, with the potential to treat and prevent bipolar depression, which is the dominant and arguably most disabling and under-treated phase of the illness. This review examines the published clinical trials of lamotrigine in bipolar treatment. While the data supports its tolerability and safety, the strongest evidence for its efficacy lies in the prevention of bipolar depression, with weaker evidence for the treatment of acute bipolar depression, refractory unipolar and bipolar depression, and rapid cycling bipolar disorder. The total number of published well designed trials is small, even the maintenance evidence is derived from two studies. However, this relative inadequacy compares favorably with the alternative treatment options for bipolar depression, which are marked by poor efficacy or risk of polarity switch. The designation of lamotrigine as first-line treatment for bipolar depression prophylaxis should be done in cognizance of this context, and it would seem prudent to await greater evidence of efficacy before designating lamotrigine as first-line treatment for other bipolar indications. Further randomized controlled trials are required to consolidate the available findings and to explore the boundaries of lamotrigine's efficacy, which may encompass the soft spectral disorders.

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Anticonvulsants, including valproate and carbamazepine, have established efficacy in the treatment of mania. The anticonvulsant, lamotrigine. has been reported to have antimanic and antidepressant efficacy, and mood-stabilising effects in case reports and preliminary open trials. The efficacy and tolerability of lamotrigine has been compared with olanzapine and lithium in a randomised, prospective, controlled fashion over a period of 4 weeks treatment in a total of 45 hospitalised patients with DSM-IV-defined mania. Significant improvements of a similar magnitude were observed for all treatment groups and lamotrigine was well tolerated. Mechanisms of action proposed to explain the antimanic activity of lamotrigine include inhibition of voltage-sensitive and use-dependent sodium channels, inhibition of glutamate release and calcium channel blockade. Platelet studies have indicated supersensitivity of glutamate receptors and increased intracellular calcium concentrations in patients with mania. Further clinical and mechanistic studies of lamotrigine use in mania are warranted.

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Adverse events associated with lithium and anticonvulsant use in patients with bipolar disorder have been determined to decrease rates of treatment adherence; however, research that explores how adverse events influence treatment adherence, and which events have the greatest impact, is sparse and limited. This paper reviews the existing literature regarding common side effects encountered with lithium and anticonvulsant use in patients with bipolar disorder and presents data regarding their impact on treatment adherence. Guidelines for reducing and limiting adverse events are highlighted, as are recommendations for improving compliance associated with the experience of adverse events in the bipolar disorder population.

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To review available guidelines, explore treatment strategies currently applied, identify critical issues and propose direction for new developments.