This study evaluates the association between near infrared spectroscopy (NIRS) and indexed oxygen delivery (DO2i) and their possible correlation with postoperative organ failure.
Literature evidences show that levels of DO2i under 262-272 mL/min/m2 during cardiopulmonary by-pass (CPB) are associated with an increased incidence of acute kidney injury (AKI). Furthermore, it has been demonstrated that keeping a NIRS of 75-80% compared to the basal value reduces the risk of perioperative morbidity. On the other hand, a NIRS \< 50% of basal value seems to be predictive of an increase in morbidity. All of those studies had been performed during CPB and knowledge lacks in management of DO2i and NIRS before and after CPB.
Study Type
OBSERVATIONAL
Enrollment
50
Evaluate the correlation between NIRS and DO2i during cardiac surgery
Time frame: Intraoperative
Evaluate the correlation between NIRS, DO2i and SOFA score
Time frame: 7 days postoperative
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