Relationship Between Venous Oxygen Saturation and Cardiac Index After Open Heart Surgery

One hundred patients who underwent coronary bypass surgery were studied to investigate the relalionship between Sv02 and CI. After admission of patients to the intensive care unit Sv02, CI, V02 were measured every hour within the first six hours. When the changes of SvO2 were compared with CI and VO2, there was very weak correlation between SvO2 and the other parameters. Correlation coefficient between CI and SvO2 was 0.15 and that between VO2 and CI whereas no significant change was noticed in SvO2. In conclusion SvO2 was not predictive of CI in the postoperative period after open heart surgery.