Objective: We assessed the safety and tolerability of an olive oil-based lipid emulsion compared with a soybean-based lipid emulsion in critically ill neonates.
Methods: A double-blinded, randomized study was conducted in critically ill neonates requiring parenteral nutrition in the first week of life. Infants were randomized to receive a lipid emulsion based on olive oil (OO; ClinOleic) or soybean oil (SO; Intralipid) for a minimum of 5 d. Plasma phospholipid fatty acids, F(2)-isoprostanes, liver function, and clinical outcome were assessed after 5 d of therapy.
Results: Seventy-eight neonates (men gestational age 37 wk, range 26-41 wk) received OO (n = 39) or SO (n = 39). Both emulsions were well tolerated with no adverse events observed. At day 5, plasma phospholipid oleic acid (C18:1omega-9) levels increased in infants receiving OO compared with lower levels in infants receiving SO (mean percentage +/- SD 33.1 +/- 6.4 for OO versus 18.6 +/- 2.4 for SO; mean difference -14.7 mmol/L, 95% confidence interval -17.5 to -11.9). The increase in plasma phospholipid linoleic acid levels was attenuated in infants receiving OO (mean percentage +/- SD 12.6 +/- 3.0 for OO versus 23.7 +/- 6.9 for SO; adjusted mean 11.4 mmol/L, 95% confidence interval 8.1-14.8). No differences were observed in plasma F(2)-isoprostane levels according to the type of lipid emulsion received.
Conclusion: The OO-based emulsion (ClinOleic) was well tolerated in critically ill neonates. Differences in plasma phospholipids at day 5 reflected the fatty acid composition of the administered emulsion. No significant differences in plasma F(2)-isoprostane levels were detected after 5 d of lipid administration.
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