A 650 grаm 25 week gestаtiоn femаle infant is bоrn via emergency c-sectiоn due to a placental abruption. Apgar scores are 2, 5, and 6 at 1, 5, and 10 minutes respectively. In addition to NRP measures provided at delivery, the infant is intubated and given surfactant in the delivery room. She is transferred to the NICU and umbilical lines are placed. TF are started at 80 ml/kg/day with D10W through the UVC and 1/2 NS through the UAC at 1 ml/hr. She is placed on HFJV with FiO2 100%. She has been tachycardic with hypotension since birth despite dopamine and PRBC transfusions. Her Hgb at birth was 3.2 g% and most recently 8.1 g% at 24 hr of age. Her blood culture is pending and she is on ampicillin and gentamicin. She has had no urine output at 28 hours of age. Her abdomen is soft without masses. A bladder catheter is placed with no urine in the tubing. What is the most likely cause of her acute kidney injury?