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The prone position has been used to improve oxygenation in patients with severe hypoxemia and acute respiratory failure since 1974. All studies with the prone position document an improvement in systemic oxygenation in 70% to 80% of patients with acute respiratory distress syndrome (ARDS), with maximal improvement seen in the most hypoxemic patients. This article reviews data regarding efficacy for use of the prone position in patients with ARDS. Also described is a simple, safe, quick, and inexpensive procedure used to prone patients with severe ARDS on a standard bed in the intensive care unit at the University of Michigan., (Copyright © 2011 Elsevier Inc. All rights reserved.)

The role of extracorporeal membrane oxygenation (ECMO) in supporting adult refractory respiratory failure continues to evolve. Technical advances and the clinical challenges of H1N1 associated severe ARDS have spurred a resurgence of interest in ECMO. Published systematic review and pooled analyses point out the limitations of available studies, however, a growing body of evidence suggest potential for benefit. Referral to a specialized center with ECMO experience should be considered early after the initiation of high-level ventilator support in adult patients with severe ARDS., (Copyright © 2011 Elsevier Inc. All rights reserved.)

Rationale: Accurate, early identification of patients at risk for developing acute lung injury (ALI) provides the opportunity to test and implement secondary prevention strategies., Objectives: To determine the frequency and outcome of ALI development in patients at risk and validate a lung injury prediction score (LIPS)., Methods: In this prospective multicenter observational cohort study, predisposing conditions and risk modifiers predictive of ALI development were identified from routine clinical data available during initial evaluation. The discrimination of the model was assessed with area under receiver operating curve (AUC). The risk of death from ALI was determined after adjustment for severity of illness and predisposing conditions., Measurements and Main Results: Twenty-two hospitals enrolled 5,584 patients at risk. ALI developed a median of 2 (interquartile range 1-4) days after initial evaluation in 377 (6.8%; 148 ALI-only, 229 adult respiratory distress syndrome) patients. The frequency of ALI varied according to predisposing conditions (from 3% in pancreatitis to 26% after smoke inhalation). LIPS discriminated patients who developed ALI from those who did not with an AUC of 0.80 (95% confidence interval, 0.78-0.82). When adjusted for severity of illness and predisposing conditions, development of ALI increased the risk of in-hospital death (odds ratio, 4.1; 95% confidence interval, 2.9-5.7)., Conclusions: ALI occurrence varies according to predisposing conditions and carries an independently poor prognosis. Using routinely available clinical data, LIPS identifies patients at high risk for ALI early in the course of their illness. This model will alert clinicians about the risk of ALI and facilitate testing and implementation of ALI prevention strategies. Clinical trial registered with www.clinicaltrials.gov (NCT00889772).

Background: The ARDS Clinical Trials Network Fluid and Catheter Treatment Trial (FACTT) addressed fluid management and central monitoring of patients with acute respiratory distress syndrome/acute lung injury (ARDS/ALI). Because surgical patients may have been fundamentally different from the overall FACTT cohort, we set out to separately analyze the surgery patients in the trial., Study Design: We performed a posthoc, surgical subgroup analysis of 1,000 patients enrolled in the FACTT. Patients were randomized using a 2x2 factorial design comparing a conservative (CON) versus a liberal (LIB) strategy of fluid management and the use of a pulmonary artery catheter (PAC) or a central venous catheter (CVC). The primary end point was death at 60 days. Secondary end points included the number of ventilator-free days, ICU-free days, and dialysis-free days until hospital discharge up to day 90. We defined surgical patients as those admitted to a surgical ICU, burn ICU, or cardiac surgical ICU; trauma patients; or those with an APACHE III surgical admission type., Results: There were 244 surgical patients. Risk of death within 60 days of randomization did not vary with catheter or fluid management, and a corresponding lack of effect was evident with regard to dialysis-free days. Ventilator-free days were increased in the fluid-conservative group (LIB, 13+/-1 days; CON, 15+/-1 days; p=0.04) at 28 days. CVC patients had more ventilator-free days at 28 and 90 days (28 days: CVC, 16+/-1 days; PAC, 13+/-1 days; p=0.03; 90 days: CVC, 64+/-3 days; PAC, 57+/-4 days; p=0.03). CVC patients had more ICU-free days at 90 days (90 days: CVC, 63+/-3 days; PAC, 55+/-3 days; p=0.04)., Conclusions: The risk of death did not vary with fluid management or catheter. A conservative fluid-administration strategy and central venous catheter monitoring resulted in more ventilator-free and ICU-free days in surgical patients with acute lung injury, and conservative fluid administration did not result in more renal failure.

Objective: To evaluate the independent influence of fluid balance on outcomes for patients with acute lung injury., Design: Secondary analysis of a prospective cohort study conducted between March 1996 and March 1999., Setting: The study involved 10 academic clinical centers (with 24 hospitals and 75 Intensive Care Units)., Patients: All patients for whom fluid balance data existed (844) from the 902 patients enrolled in the National Heart Lung Blood Institute's ARDS Network ventilator-tidal volume trial., Interventions: The study had no interventions., Measurements/results: On the first day of study enrollment, 683 patients were, on average, more than 3.5 L in positive fluid balance compared to 161 patients in negative fluid balance (P < .001). Cumulative negative fluid balance on day 4 of the study was associated with an independently lower hospital mortality (OR, 0.50; 95% CI, 0.28-0.89; P < .001) more ventilator and intensive care unit-free days., Conclusions: Negative cumulative fluid balance at day 4 of acute lung injury is associated with significantly lower mortality, independent of other measures of severity of illness.