Continuous Monitoring of Central Venous Oxygen Saturation (Pediasat) in Pediatric Patients Undergoing Cardiac Surgery: A Validation Study of a New Technology

Marco Ranucci, Giuseppe Isgrò, Teresa De La Torre, Federica Romitti, Donatella De Benedetti, Concetta Carlucci, Hassan Kandil, Andrea Ballotta

Research output: Contribution to journalArticle


Objective: Mixed venous oxygen saturation and central venous oxygen saturation are considered possible indicators of the adequacy of oxygen delivery with respect to the oxygen needs of critically ill adult and pediatric patients. The present study was aimed at validating the accuracy of a new technology (Pediasat central venous catheter) in providing a continuous measurement of the central venous oxygen saturation in pediatric patients. Design: A prospective observational study. Participants: Thirty pediatric patients (age, 6 days-9 years) undergoing cardiac operations. Data obtained with the Pediasat during and after the operation were compared with simultaneously collected venous blood samples analyzed with standard laboratory techniques. Setting: A clinical research hospital. Interventions: None. Measurements and Main Results: A Bland and Altman analysis was performed on 30 matched sets of data collected before cardiopulmonary bypass, during cardiopulmonary bypass, and during the intensive care unit stay. Before cardiopulmonary bypass, there was a bias of 0.003, with lower and upper limits of agreement, -5.84 and 5.84 (percentage error, 17.3%). During cardiopulmonary bypass, the bias was 0.57 and lower and upper limits of agreement were -7.7 and 8.7 (percentage error, 23.2%). At 2 hours after the arrival in the intensive care unit, the bias was -0.6 and the lower and upper limits of agreement were -8 and 6.8 (percentage error, 20.3%). Conclusions: Because of the minimal bias and the acceptable value of percentage error, the Pediasat may be considered as an accurate tool for the continuous measurement of the central venous oxygen saturation in neonates and pediatric patients during and after cardiac operations.

Original languageEnglish
Pages (from-to)847-852
Number of pages6
JournalJournal of Cardiothoracic and Vascular Anesthesia
Issue number6
Publication statusPublished - Dec 2008



  • cardiac surgery
  • monitoring
  • oxygen saturation
  • pediatrics

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine
  • Cardiology and Cardiovascular Medicine

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