Oxygen Saturation in Children in the Postoperative Period

69 children (19 with paired preoperative and postoperative monitoring, 50 with postoperative monitoring only) undergoing surgery usually associated with moderate to severe postoperative pain, treated with epidural, intravenous, or intramuscular opioids.

Overnight postoperative oxygen saturation monitoring

Overnight preoperative oxygen saturation monitoring (in a subset of 19 children)

Overnight oxygen saturation levels and percent of monitored time spent with an oxygen saturation less than 95%, 90%, 85%, or 80%surrogate