Antegrade or retrograde administration of cold cardioplegic solution (20 ml/kg) consisting of drained patient's blood, NaCl 6.43 g/L, KCl 1.193 g/L, CaCl2 0.176 g/L and MgCl2 3.253 g/L (pH 7.4 at 4 - 8 °C) is applied as appropriate for cardiac protection after application of aortic cross clamp (ACC).