For this prospective study, we asked whether there are relationships between theredox status of patients directly before cardiosurgical interventions and otherclinically and metabolically relevant parameters including gender, age,anthropometric parameters, lipid metabolites, drug intake such asangiotensin-converting enzyme (ACE) inhibitors, AT-II receptor blockers,beta-blockers, and calcium channel blockers (CCBs), CVDs such as coronary heartdisease, chronic obstructive pulmonary disease (COPD), and pulmonary hypertension(PH), and the duration of the treatment at the intensive care unit. Here, ACE is linked to chronic obstructive pulmonary disease.