American journal of critical care : an official publication, American Association of Critical-Care Nurses
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To help the clinician bridge the gap between research and practice in determining ways to minimize side effects of endotracheal suctioning. ⋯ An algorithm to guide clinical decision making is presented based on the conclusions of this review of the research.
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Review
Gastric intramucosal pH: a noninvasive method for the indirect measurement of tissue oxygenation.
Monitoring the adequacy of tissue oxygenation is an important goal in the care of the critically ill patient. Global alterations in tissue oxygenation are inferred from changes in systemic oxygen transport (defined as the product of cardiac output and arterial oxygen content) and total oxygen consumption. These parameters, however, cannot measure the level of oxygenation of specific tissue beds, in particular those that are first affected by hypoxia, such as the gastrointestinal tract and the kidneys. ⋯ Gastrointestinal tonometry is a relatively noninvasive device that appears capable of measuring metabolic changes produced by hypoxia. Because of the sensitive nature of the gastrointestinal mucosa, these changes often occur well in advance of other, more common, indices of hypoxia. The use of the tonometer may become a routine procedure in the overall monitoring of critically ill patients.
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Sodium nitroprusside is an antihypertensive agent used frequently in the critical care setting. Recently, the Food and Drug Administration (FDA) published a report that led to a labeling change emphasizing the pharmacokinetics of nitroprusside with metabolism to highly toxic cyanide. ⋯ Cyanide combines with thiosulfate to form the less toxic sodium thiocyanate, which is then excreted. A 10:1 ratio of nitroprusside to thiosulfate in the infusion eliminates the possibility of cyanide intoxication without altering the efficacy of nitroprusside.
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This summary article discusses the status of the nursing shortage in the United States, with emphasis on successful strategies to address it. Liaisons between the American Association of Critical-Care Nurses (AACN) and the Society for Critical Care Medicine, as well as with the American College of Cardiology, are highlighted, with primary emphasis on the strategy of nurse-physician collaboration.