Endocan, E-Selectin, TNF(Tumor Necrosis Factor)-alpha, Total Oxidant and Antioxidant status will be studied on sequential blood samples taken from patients who will undergo Elective Coronary Artery Bypass Grafting operation and aortic valve replacement, via retrograde cardioplegia cannula before induction, at the beginning of cardiopulmonary bypass and after removing the cross-clamp. With routinely used parameters like hemogram, lactate, liver and kidney function tests morbidity-mortality rates for specific cardioplegia technique will be compared
Investigating the myocardial effects of cold blood cardioplegia and del nido cardioplegia solution, which are routinely used in clinical practice, will contribute to the studies in the literature on the safety and efficacy of these two methods.~For this purpose, patients with coronary artery disease that going to be Coronary Artery Bypass Graft (CABG) surgery will be classified within the scope of the SYNTAX score, the level of exposure to cardioplegia change in proportion to their score will be examined. Also, left ventricular muscle mass will be calculated in patients who will undergo Aortic Valve replacement (AVR) due to Aortic Stenosis, and myocardial protection level proportional to muscle mass will be examined, and cardioplegia efficiency will be compared.