Current opinion in anaesthesiology
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Curr Opin Anaesthesiol · Apr 2008
ReviewTargeting the lipopolysaccharides: still a matter of debate?
The intention of this article is to review endotoxin, host response to endotoxin, clinical significance of endotoxemia, past failed therapies targeting endotoxin, current therapeutic efforts in this area and the authors' opinion on the future of such therapy. ⋯ The benefits of therapies targeting endotoxin remain to be elucidated. Clinical trials targeting populations with documented endotoxemia are more likely to provide an adequate test of this therapeutic approach. Prophylaxis of high-risk populations should also be considered.
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To assess the current role of selenium supplementation in critically ill patients. ⋯ Despite the low selenium content in the body (20-40 mg), selenoenzymes play an important role in antioxidant defense in humans. Selenium administration may be associated with improved outcomes, but further studies are needed to determine the precise mechanism of action. Studies are also needed to determine optimal dosing regimens, and to identify those patients in whom this approach is likely to be most effective. Currently, doses below the tolerable upper intake level (400 microg) may be used in supplementation. Higher doses (up to the level of no adverse effect, 800 microg) may be of interest and need to be studied further. The pro-oxidant effects of selenocompounds, especially sodium selenite, which vary depending on the compound, dose, and concentration, also need to be assessed further for their toxicity and potential therapeutic use in patients with septic shock.
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Curr Opin Anaesthesiol · Apr 2008
ReviewEarly goal-directed therapy in severe sepsis and septic shock: a contemporary review of the literature.
Aggressive approaches to acute diseases such as acute myocardial infarction, trauma, and stroke have improved outcomes. Early goal-directed therapy for severe sepsis and septic shock represents a similar approach. An analysis of the literature assessing external validity and generalizability of this intervention is lacking. ⋯ Early goal-directed therapy modulates systemic inflammation and results in significant reductions in morbidity, mortality, and healthcare resource consumption. Early goal-directed therapy has been externally validated and is generalizable across multiple healthcare settings. Because of these robust findings, further emphasis should be placed on overcoming logistical, institutional, and professional barriers to implementation which can save the life of one of every six patients presenting with severe sepsis and septic shock.
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This article reviews new findings on the use of vasopressor agents in septic shock. ⋯ The use of norepinephrine or epinephrine can be left to the discretion of the treating physician. Low-dose vasopressin administration remains an option for catecholamine-refractory septic shock. The potential benefit of early use in combination with a moderate dose of norepinephrine remains to be determined.
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Curr Opin Anaesthesiol · Apr 2008
ReviewRole of glutamine supplementation in critically ill patients.
To update the documentation concerning the clinical use of glutamine supplementation in critically ill patients. Outcome, patient safety and future plans are examined. ⋯ The use of intravenous glutamine supplementation in critically ill patients on total parenteral nutrition is currently the standard of care. The use of exogenous glutamine supplementation in critically ill patients on enteral nutrition is still not supported by sufficient evidence. The use of plasma glutamine concentration as an indicator for glutamine deficiency and a possible indicator for supplementation is suggested.