Dose reduction and titration or discontinuation will occur if there is evidence of hypertriglyceridemia (serum triglycerides > 200 mg/dL), allergic response, toxicity or evidence of bleeding that is believed to be caused or worsened by Omegaven. If lipid intolerance develops, defined as serum triglyceride level > 200 mg/dL, lipids will be stopped for at least 4 hours and a repeat serum triglyceride level will be obtained. If the triglycerides continue to remain high a dosage reduction of 25% of the current dose will be considered. Growth indices include weight, length, and head circumference will also be monitored. The Omegaven dose may be discontinued if the subject is receiving adequate enteral nutrition to meet metabolic and growth needs.