Custodiol-HTK (Histidine-tryptophan-ketoglutarate) Solution as a Cardioplegic Agent

After cross-clamping of the aorta approximately 1-2 L of Custodiol-HTK was infused into the ascending aorta over 6-8 minutes. Additional doses of 100-200 ml were administered as needed. The cardioplegic solution was delivered at a temperature of 4°C - 10°C.

After cross-clamping the aorta, at least 1000 mL of a 4:1 mixture of cold blood: cold crystalloid was administered at a pressure of 300 mmHg or less via a twin roller pump. Every 20 minutes an additional \> 200 mL was administered in an antegrade/retrograde fashion throughout the remainder of the case. The cardioplegic solution was delivered at a temperature of 4°C - 8°C.