Current opinion in critical care
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Resuscitation with hydroxyethyl starch (HES) is controversial. In this review, we will present the current evidence for the use of HES solutions including data from recent high-quality randomized clinical trials. ⋯ There is no evidence for an overall beneficial effect of HES in any subgroup of critically ill patients, but there are clear signs of harm. As safer alternatives exist, we recommend that HES is no longer used in critically ill patients.
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Curr Opin Crit Care · Aug 2013
ReviewReappraising Starling: the physiology of the microcirculation.
Vascular permeability is traditionally explained by Starling's principle, describing two opposing forces across the endothelial cell line to maintain compartments in balance. Several contradictions to this principle have recently questioned its validity. ⋯ Starling's principle requires an adaptation to recognize that there is no inward-directed oncotic pressure gradient across the whole anatomical vessel wall. The carrier of vascular barrier competence is the intact endothelial surface layer which might be protected by avoiding intravascular hypervolaemia and limiting inflammation.
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The review is focused on the challenge of managing airway and ventilation in the intraoperative and postoperative period. ⋯ The combination of planning extubation of predicted and unpredicted difficult airway, both intraoperative low tidal volume and low FiO2 with LRM and PEEP at different points of surgery and postoperative noninvasive ventilation should be considered in patients undergoing surgery to decrease the rate of postoperative pulmonary complications and major fatal complications such as brain damage and death.
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Using perioperative goal-directed therapy (GDT) or peroperative hemodynamic optimization significantly reduces postoperative complications and risk of death in patients undergoing noncardiac major surgeries. In this review, we discuss the main changes in the field of perioperative optimization over the last few years. ⋯ GDT is safe and more likely to tailor the amount of fluids given to the amount of fluids actually needed. This approach includes assessment of fluid responsiveness and, if necessary, the use of inotropes; moreover, this approach can be coupled with a restrictive strategy for maintenance fluids. These strategies have been increasingly incorporated into protocols for perioperative hemodynamic optimization in high-risk patients undergoing major surgery, resulting in more appropriate use of fluids, vasopressors, and inotropes.
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To review recent studies and information on the relationship between fluid administration and kidney function in critically ill patients. ⋯ Clinicians need to weigh the balance between adequate resuscitation of cardiac output and avoidance of fluid overload. Protocolized resuscitation to hemodynamic goals may help achieve these conflicting goals at least in the early phases of critical illness. In critically ill patients with, or at risk of, AKI, clinicians should avoid starch and, possibly, saline solutions.