25 Aug 06
Posted in Bleeding at 9:12 by Laci
By Y Arabi, B Al Knawy, A N Barkun and M Bardou
Critical Care 2006, 10:218
Whether it is the primary reason for admission or a complication of critical illness, upper gastrointestinal bleeding is commonly encountered in the intensive care unit. In this setting, in the absence of endoscopy, intensivists generally provide supportive care (transfusion of blood products) and acid suppression (such as proton pump inhibitors). More recently, octreotide (a somatostatin analogue) has been used in such patients. However, its precise role in patients with upper gastrointestinal bleeding is not necessarily clear and the drug is associated with significant costs. In this issue of Critical Care, two expert teams debate the merits of using octreotide in non-variceal upper gastrointestinal bleeding.
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Posted in Mechanical ventilation, Monitoring at 9:11 by Laci
By L Brochard
Critical Care 2006, 10:156
The pressure–volume (PV) curve is a physiological tool proposed for diagnostic or monitoring purposes during mechanical ventilation of acute respiratory distress syndrome. The reduction in compliance measured by the PV curve and the different inflection points on the curve are considered interesting markers of the severity of and the levels of opening and closing pressures. Tracing a curve, however, may in itself influence the degree of opening or distension of the lung, and interpretation of the curve has to take this effect into account. In some individuals tracing the curve may even have moderate hemodynamic effects. Fortunately, on average, most of these effects are transient or negligible and do not invalidate the PV curve measurement.
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Posted in Critical Care, Sepsis at 9:10 by Laci
By E Rivers
Critical Care 2006, 10:154
Although multiple studies of acute myocardial infarction, trauma, and stroke have been translated into improved outcomes by applying diagnosis and therapy at the most proximal stage of hospital presentation (before intensive care unit arrival), this approach to the sepsis patient has been lacking. In response to this, a trial comparing early goal-directed therapy (EGDT) versus standard care was performed using internally and externally validated criteria for early identification of high risk patients, established definitions, and a consensus-derived protocol to reverse the hemodynamic perturbations of hypovolemia, vasoregulation, myocardial suppression and increased metabolic demands. That trial of EGDT resulted in significant reductions in morbidity, mortality, vasopressor use, and health care resource consumption. The end-points used in the protocol and the outcome results were subsequently externally validated, revealing similar or better mortality benefit. This commentary examines the rational and validation for the use of early markers of illness severity. Current evidence support the endpoints in the EGDT protocol, external validity in regards to outcome benefit and the universal need to improve the quality of care for early sepsis.
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Posted in Critical Care, Monitoring at 9:07 by Laci
By H Rose and R Venn
Critical Care 2006, 10:152
The use of pulmonary artery catheters is under debate yet again. We look at two recent trials evaluating their impact on mortality. Our suspicions regarding obesity are proven and we also look at a simple, cost effective method of reducing ventilator-associated pneumonia. Finally, an intervention to improve the poor outcome associated with out-of hospital cardiac arrests is evaluated.
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