ΔPCO and ΔPCO/CO Are Not Predictive of Organ Dysfunction After Cardiopulmonary Bypass.

Cardiac surgery is associated with a substantial risk of major adverse events. Although carbon dioxide (CO)-derived variables such as venous-to-arterial CO difference (ΔPCO), and PCO gap to arterial-venous O content difference ratio (ΔPCO/CO) have been successfully used to predict the prognosis of non-cardiac surgery, their prognostic value after cardiopulmonary bypass (CPB) remains controversial. This hospital-based study explored the relationship between ΔPCO, ΔPCO/CO and organ dysfunction after CPB.