60 elective patients for CABG will be included to receive either standard hyperkalemic
cardioplegia (St.Thomas Hospital Solution No I) or cardioplegia where supranormal potassium
is replaced with 1.2 mM adenosine. Hypothesis as follows: 1. Adenosine instead of supranormal
potassium in the cardioplegic solution give satisfactory cardiac arrest. 2. Adenosine instead
of supranormal potassium in the cardioplegic solution gives equal cardioprotection. The
patients will be followed with PiCCO-catheter to monitor cardiac function and repetitive
blood samples to measure release of cardiac enzymes.