The specific aims are to:
1. Determine if circulating levels of brain injury markers during ECMO and brain MRI abnormalities within 6 weeks after ECMO are associated with survival at 18 months after ECMO with a score ≥85 on the Vineland Adaptive Behavior Scales, third edition (VABS-III).
2. Determine whether the presence and degree of inflammation during ECMO and markers of neuroinflammation on brain magnetic resonance spectroscopy (MRS) within 6 weeks after ECMO are associated with survival at 18 months after ECMO with a score ≥85 on VABS-III.
3. Determine whether metabolic and lipid neuroinflammatory pathways will distinguish between at-risk for, acute, and recovery phases of neurologic injury (NI) during ECMO.