Abstract: An apparatus for transporting and maintaining an excised heart in condition for transplantation includes a container defining a chamber for receiving the heart, and a body of physiologic fluid disposed in the chamber. A pump is provided for pumping the fluid into the heart, and a source of oxygen under pressure. Oxygen flow structure continuously directs flow of pressurized oxygen into the fluid thereby to oxygenate the fluid and to maintain the pressure in the chamber at a pressure above atmospheric pressure. An aorta supply line directs fluid from the pump to the aorta and thence into the coronary arteries to force perfusion of the vascular bed of the heart.