American journal of critical care : an official publication, American Association of Critical-Care Nurses
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Commercial enteral nutritional formulas for enhancement of the immune system are widely used in critical care. Immunonutrition with arginine can enhance inflammatory and immunologic responses in animal models and in humans. Although clinical improvements in surgical patients have been reported, benefits in critically ill patients with systemic inflammatory response syndrome, sepsis, or organ failure are less clear. ⋯ These findings brought about confusion and controversy over the use of immunonutritional formulas in subsets of critically ill patients. A review of the literature on the function of arginine, its effect on the immune system, its roles in immunonutrition and in the clinical outcomes of critically ill patients, and the implications for nursing practice indicated that the benefits of immunonutrition with arginine in critically ill patients are unproven and warrant further study. Until more information is available, nutritional support should focus primarily on preventing nutritional deficiencies rather than on immunomodulation.
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The clinical use of mild hypothermia to preserve ischemic cardiac and cerebral tissue continues to grow in popularity. This is a result of the known fact that hypothermia reduces myocardial oxygen demands more than any other intervention. The Advanced Life Support (ALS) Task Force of the International Liaison Committee on Resuscitation (ILCOR) made the following recommendations a year ago, in October 2002: "Unconscious adult patients with spontaneous circulation after out-of-hospital cardiac arrest should be cooled to 32 degrees C to 34 degrees C for 12 to 24 hours when the initial rhythm was VF," or in-hospital even when arrest is due to other rhythms. Therapeutic use of hypothermia is in progress.
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Skillful communication between and among clinicians and patients' families at the patients' end of life is essential for decision making. Yet communication can be particularly difficult during stressful situations such as when a family member is critically ill. This is especially the case when families are faced with choices about forgoing life-sustaining treatment. ⋯ Although family members who experienced conflict were in the minority of the larger study sample, their concerns and needs are important for clinicians to examine. Paying careful attention to these communication needs could reduce the occurrence of conflict between clinicians and patients' families in caring for dying patients and reduce stress for all involved.
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Sepsis is a complex syndrome that can lead to multiple organ failure and death. Severe sepsis has been associated with mortality rates ranging from 28% to 50% and is the most common cause of death in the noncardiac intensive care unit. Despite advances in both antibiotic therapy and supportive care, the mortality rate due to severe sepsis has remained fundamentally unchanged in the past several decades. ⋯ The epidemiology, pathophysiology, and treatment of severe sepsis are reviewed. Also discussed are the recently published results from a multicenter, randomized, placebo-controlled phase 3 clinical trial of drotrecogin alfa (activated), a recombinant form of human activated protein C, in patients with severe sepsis. The nursing implications of this new approved therapy are discussed.
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Links between teamwork and outcomes have been established in a number of fields. Investigations into this link in healthcare have yielded equivocal results. ⋯ The results of this study and other establish a link between teamwork and patients' outcomes in intensive care units. The evidence is sufficient to warrant the implementation of strategies designed to improve the level of teamwork and collaboration among staff members in intensive care units.