RT Journal Article SR Electronic T1 Umbilical Venous Catheter vs Umbilical Artery Catheter JF Pediatrics JO Pediatrics FD American Academy of Pediatrics SP 495 OP 495 VO 86 IS 3 A1 Kitterman, Joseph A. YR 1990 UL http://pediatrics.aappublications.org/content/86/3/495.1.abstract AB In their commentary,1 Drs Dudell, Cornish, and Bartlett note that the measurement of mixed venous saturation (SVo2) is routine for infants receiving extracorporeal membrane oxygenation; in such infants, SVo2 can be measured easily without further invasive procedures. The authors recommend that clinicians use SVo2 measurements "more routinely" in other sick newborn infants and state that the measurement can be made with "relative ease" by inserting an umbilical venous catheter into the right atrium. This recommendation raises some concerns: