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Original Article
Volume 334:1417-1422 May 30, 1996 Number 22
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Aerosolized Surfactant in Adults with Sepsis-Induced Acute Respiratory Distress Syndrome
Antonio Anzueto, M.D., Robert P. Baughman, M.D., Kalpalatha K. Guntupalli, M.D., John G. Weg, M.D., Herbert P. Wiedemann, M.D., Antoni Artigas Raventós, M.D., François Lemaire, M.D., Walker Long, M.D., David S. Zaccardelli, Pharm.D., Edward N. Pattishall, M.D., for The Exosurf Acute Respiratory Distress Syndrome Sepsis Study Group

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ABSTRACT

Background Patients with acute respiratory distress syndrome (ARDS) have a deficiency of surfactant. Surfactant replacement improves physiologic function in such patients, and preliminary data suggest that it may improve survival.

Methods We conducted a prospective, multicenter, double-blind, randomized, placebo-controlled trial involving 725 patients with sepsis-induced ARDS. Patients were stratified according to the risk of death at base line (indicated by their score on the Acute Physiologic and Chronic Health Evaluation [APACHE III] index) and randomly assigned to receive either continuously administered synthetic surfactant (13.5 mg of dipalmitoylphosphatidylcholine per milliliter; 364 patients) or placebo (0.45 percent saline; 361 patients) in aerosolized form for up to five days.

Results The demographic and physiologic characteristics of the two treatment groups were similar at base line. The mean (±SD) age was 50±17 years in the surfactant group and 53±18 years in the placebo group, and the mean APACHE III scores at randomization were 70.4±25 and 70.5±25, respectively. Hemodynamic measures, measures of oxygenation, duration of mechanical ventilation, and length of stay in the intensive care unit did not differ significantly in the two groups. Survival at 30 days was 60 percent for both groups. Survival was similar in the groups when analyzed according to APACHE III score, cause of death, time of onset and severity of ARDS, presence or absence of documented sepsis, underlying disease, whether or not there was a do-not-resuscitate order, and medical center. Increased secretions were significantly more frequent in the surfactant group; the rates of other complications were similar in the two groups.

Conclusions The continuous administration of aerosolized synthetic surfactant to patients with sepsis-induced ARDS had no significant effect on 30-day survival, length of stay in the intensive care unit, duration of mechanical ventilation, or physiologic function.


Source Information

From the University of Texas Health Science Center at San Antonio and the South Texas Veterans Health Care System, Audie L. Murphy Memorial Veterans Hospital Division, San Antonio (A.A.); the University of Ohio, Cincinnati (R.P.B.); Baylor College of Medicine, Houston (K.K.G.); the University of Michigan Medical Center, Ann Arbor (J.G.W.); the Cleveland Clinic, Cleveland (H.P. W.); Consorci Hospitalari del Parc Tavli, Sabadel, Spain (A.A.R.); Henri Mondor Hospital, Paris (F.L.); the University of North Carolina, Chapel Hill (W.L.); and Glaxo Wellcome, Research Triangle Park, N.C. (D.S.Z., E.N.P.).

Address reprint requests to Dr. Anzueto at the South Texas Veterans Health Care System, Audie L. Murphy Memorial Veterans Hospital Division, Pulmonary Disease Section (111E), 7400 Merton Minter Blvd., San Antonio, TX 78284.

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