Utilization patterns and @entity1 outcomes associated with use of rescue therapies in XXXX .

@entity1 @entity649 @entity2507 @entity204 @entity647
OBJECTIVES: To investigate the practice patterns and clinical outcomes associated with use of rescue therapies in @entity1 with @entity647 . DESIGN: Secondary analysis of multicentered, randomized, controlled trial data from the National Heart, Lung, and Blood Institute Acute @entity649 Clinical Trials Network. SETTING: Intensive care units of Acute @entity649 Clinical Trials Network centers across the United States. @entity1 : Subjects enrolled in six Acute @entity649 Clinical Trials Network trials occurring between 1996 and 2005. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: One hundred sixty-six of 2632 (6.3%) subjects received rescue therapy, defined as prone positioning (97 of 166 [58%]), inhaled vasodilators (47 of 166 [28%]), high-frequency ventilation (12 of 166 [7%]), or extracorporeal membrane oxygenation (10 of 166 [6%]). Use of inhaled vasodilators increased whereas use of prone position decreased over time (p for trend = 0.04 and 0.0013, respectively). Multivariate predictors for use of rescue therapy included age (odds ratio per 10 yrs and 95% confidence interval: 0.88; 0.78-0.99; p = .049), positive end-expiratory pressure (odds ratio per 5-cm @entity2507 increase: 1.33; 95% confidence interval, 1.05-1.69; p = .019), Pao2/Fio2; odds ratio per 5-cm @entity2507 increase: 0.98; 95% confidence interval, 0.96-0.99; p = .017), peak airway pressure (odds ratio per 5-cm @entity2507 increase: 1.11; 95% confidence interval, 1.001-1.237; p = .047), and study order (odds ratio per subsequent Acute @entity649 Clinical Trials Network study: 1.21; 95% confidence interval, 1.03-1.41; p = .02). Cox proportional hazards analysis of propensity score-matched subjects showed no difference in survival for those who received rescue therapy vs. those who did not (hazard ratio for @entity204 after rescue therapy or index date, 1.10; 95% confidence interval, 0.67-1.78; p = .72). No differences in survival were found between those who received prone positioning vs. inhaled vasodilators (propensity score-adjusted hazard ratio for prone 0.87; 95% confidence interval, 0.86-2.10; p = .76). CONCLUSIONS: Rescue therapies are utilized in younger @entity1 with more severe oxygenation deficits. Patterns of rescue therapy utilization appear to be changing over time. Within the limits of an observational study design, we did not find evidence of a survival benefit with use of rescue therapies in @entity647 .
