Abstract | BACKGROUND: METHODS: Objective: To determine if dietary supplementation of these substances to patients with acute lung injury would increase ventilator-free days to study day 28. Design: The OMEGA study, a randomized, double-blind, placebo-controlled, multicenter trial conducted from January 2, 2008, through February 21, 2009. All participants had complete follow-up. Setting: This trial occurred at 44 hospitals in the National Heart, Lung, and Blood Institute ARDS Clinical Trials Network. Subjects: Participants were 272 adults within 48 hours of developing acute lung injury requiring mechanical ventilation whose physicians intended to start enteral nutrition. Intervention: Twice-daily enteral supplementation of n-3 fatty acids, γ - linolenic acid, and antioxidants compared with an isocaloric control. Enteral nutrition, directed by a protocol, was delivered separately from the study supplement. Outcomes: Ventilator-free days to study day 28. RESULTS: The study was stopped early for futility after 143 and 129 patients were enrolled in the n-3 and control groups. Despite an 8-fold increase in plasma eicosapentaenoic acid levels, patients receiving the n-3 supplement had fewer ventilator-free days (14.0 vs 17.2; P=.02) (difference, −3.2 [95% CI, −5.8 to −0.7]) and intensive care unit-free days (14.0 vs 16.7; P=.04). Patients in the n-3 group also had fewer nonpulmonary organ failure-free days (12.3 vs 15.5; P=.02). Sixty-day hospital mortality was 26.6% in the n 3 group vs 16.3% in the control group (P=.054), and adjusted 60-day mortality was 25.1% and 17.6% in the n-3 and control groups, respectively ( P=.11). Use of the n-3 supplement resulted in more days with diarrhea (29% vs 21%; P=.001). CONCLUSIONS:
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Authors | Christopher K Schott, David T Huang |
Journal | Critical care (London, England)
(Crit Care)
Vol. 16
Issue 6
Pg. 325
(Nov 23 2012)
ISSN: 1466-609X [Electronic] England |
PMID | 23176247
(Publication Type: Journal Article, Comment)
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Chemical References |
- Antioxidants
- Docosahexaenoic Acids
- gamma-Linolenic Acid
- Eicosapentaenoic Acid
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Topics |
- Acute Lung Injury
(drug therapy)
- Antioxidants
(therapeutic use)
- Docosahexaenoic Acids
(therapeutic use)
- Eicosapentaenoic Acid
(therapeutic use)
- Female
- Humans
- Male
- Ventilator Weaning
- gamma-Linolenic Acid
(therapeutic use)
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