Inclusion Criteria:  Umbilical cord pH ≤7.0 or base deficit ≥ -16  Umbilical cord pH 7.01 to 7.15 or base deficit between -10 and -16 AND one of the following;  a perinatal event, defined as severe fetal heart rate abnormality such as category 2 or 3 tracing with recurrent variable decelerations, prolonged decelerations or recurrent late decelerations, umbilical cord prolapse/rupture, uterine rupture, significant placental abruption, maternal trauma or hemorrhage or cardiopulmonary arrest) 10-minute Apgar score < 5 Need for respiratory support for >10 minutes not otherwise due to a primary pulmonary process  Exclusion Criteria:  Older than 6 hours Gestational age less than or equal to 35 6/7 weeks Birthweight <1800 grams Non-English speaking parents due to time constraints to perform the consent process