Mesenteric percent change from baseline mean for Non-NEC Infants. Infant 5 received two half-volume PRBC transfusions (7.5ml. kg each) separated by 12 hours; all other infants received one full volume PRBC transfusion. Overall increased oxygenation in mesenteric oxygenation was prevalent among the non-NEC infants, although wide mean fluctuation was apparent in infant 6, 7 and 8 (closely resembling surgical TR-NEC infant 4). Six hours post-transfusion, infant 6 demonstrated a dramatic decline in oxygenation that coincided with severe bradycardic and apneic episodes, which improved following elective intubation. Tx, transfusion; Mid-Tx, time at which 50% of total volume had infused; *enteral feeding given during specified time frame; 0 = baseline.