BACKGROUND: Preclinical studies suggest that exogenous surfactant may be of value in the treatment of the acute respiratory distress syndrome (ARDS), and two phase 2 clinical trials have shown a trend toward benefit. We conducted two phase 3 studies of a protein-containing surfactant in adults with ARDS. METHODS: In two multicenter, randomized, double-blind trials involving 448 patients with ARDS from various causes, we compared standard therapy alone with standard therapy plus up to four intratracheal doses of a recombinant surfactant protein C-based surfactant given within a period of 24 hours. RESULTS: The overall survival rate was 66 percent 28 days after treatment, and the median number of ventilator-free days was 0 (68 percent range, 0 to 26); there was no significant difference between the groups in terms of mortality or the need for mechanical ventilation. Patients receiving surfactant had a significantly greater improvement in blood oxygenation during the initial 24 hours of treatment than patients receiving standard therapy, according to both univariate and multivariate analyses. CONCLUSIONS: The use of exogenous surfactant in a heterogeneous population of patients with ARDS did not improve survival. Patients who received surfactant had a greater improvement in gas exchange during the 24-hour treatment period than patients who received standard therapy alone, suggesting the potential benefit of a longer treatment course. Copyright 2004 Massachusetts Medical Society
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BACKGROUND: Preclinical studies suggest that exogenous surfactant may be of value in the treatment of the acute respiratory distress syndrome (ARDS), and two phase 2 clinical trials have shown a trend toward benefit. We conducted two phase 3 studies of a protein-containing surfactant in adults with ARDS. METHODS: In two multicenter, randomized, double-blind trials involving 448 patients with ARDS from various causes, we compared standard therapy alone with standard therapy plus up to four intratracheal doses of a recombinant surfactant protein C-based surfactant given within a period of 24 hours. RESULTS: The overall survival rate was 66 percent 28 days after treatment, and the median number of ventilator-free days was 0 (68 percent range, 0 to 26); there was no significant difference between the groups in terms of mortality or the need for mechanical ventilation. Patients receiving surfactant had a significantly greater improvement in blood oxygenation during the initial 24 hours of treatment than patients receiving standard therapy, according to both univariate and multivariate analyses. CONCLUSIONS: The use of exogenous surfactant in a heterogeneous population of patients with ARDS did not improve survival. Patients who received surfactant had a greater improvement in gas exchange during the 24-hour treatment period than patients who received standard therapy alone, suggesting the potential benefit of a longer treatment course. Copyright 2004 Massachusetts Medical Society
Authors: John P Reilly; Nuala J Meyer; Michael Gs Shashaty; Brian J Anderson; Caroline Ittner; Thomas G Dunn; Brian Lim; Caitlin Forker; Michael P Bonk; Ethan Kotloff; Rui Feng; Edward Cantu; Nilam S Mangalmurti; Carolyn S Calfee; Michael A Matthay; Carmen Mikacenic; Keith R Walley; James Russell; David C Christiani; Mark M Wurfel; Paul N Lanken; Muredach P Reilly; Jason D Christie Journal: J Clin Invest Date: 2021-01-04 Impact factor: 14.808