Validation of a Novel Oxygen Consumption Measurement Technique in Neonates

Inclusion Criteria

• •1. Mechanically ventilated neonates and infants (\<1 year of age).
• •2. Inpatients in the cardiac or neonatal intensive care unit at Boston Children's Hospital.
• •3. Assent of patient's intensive care attending physician, including agreement to place patient on 40% oxygen for up to 60 minutes.
• •4. Written parental informed consent.