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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Gas exchange and pulmonary haemodynamic responses to fat emulsions in acute respiratory distress syndrome.

OBJECTIVE: To investigate the gas exchange and pulmonary haemodynamic responses to two different intravenous fat emulsions in patients with acute respiratory distress syndrome (ARDS). DESIGN: Prospective, randomized, double-blind, placebo-controlled study. SETTING: Intensive care unit in a university-affiliated hospital. PATIENTS: 21 patients with ARDS [mean age, 57 +/- 3 (SEM) years; Acute Physiology and Chronic Health Evaluation II, 20 +/- 3; Murray's score, 2.85 +/- 0.12] consecutively admitted. INTERVENTIONS: Patients were assigned to three groups (n = 7 each): group A ( LCT) received long-chain triglycerides (20% LCT), group B ( MCT/ LCT), medium-chain triglycerides/long-chain triglycerides (20% MCT/ LCT: 50/50) and group C placebo (0.9% sodium chloride, NaCl). The infusion was always given at the rate of 2 mg/kg min over a total period of 12 h, with a volume infusion of 500 ml in each group. MEASUREMENTS: Data were collected before, immediately after and 12 h after infusion ceased. Pulmonary and systemic haemodynamic and gas exchange variables were measured at each time point. Serum triglyceride cholesterol, and non-esterified fatty acids levels were measured. RESULTS: During LCT infusion, cardiac output, oxygen consumption and oxygen delivery increased (all p < 0.05), whereas pulmonary haemodynamics, arterial oxygen tension, mixed venous partial pressure of oxygen and venous admixture ratio remained essentially unaltered. No changes were observed following MCT/ LCT infusion. CONCLUSIONS: The administration of LCT emulsion given at a slow rate did not alter arterial oxygenation because of the beneficial effect of a high cardiac output, hence offsetting the detrimental effect of increased O2 consumption.[1]


  1. Gas exchange and pulmonary haemodynamic responses to fat emulsions in acute respiratory distress syndrome. Masclans, J.R., Iglesia, R., Bermejo, B., Picó, M., Rodriguez-Roisin, R., Planas, M. Intensive care medicine. (1998) [Pubmed]
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