Abstract: A method of performing heart surgery is disclosed. The method comprises preparing a patient for coronary bypass surgery, assessing blood flow characteristics in the heart region, making decisions on graft locations and the number of grafts based upon the blood flow characteristics and completing the surgery. The method is also useful for surgery on other bodily organs and regions.

Abstract: A coronary artery graft flow-meter apparatus for insertion into a delivery line for solution to be perfused through a graft after the graft is anastomosed to a coronary artery is disclosed. The apparatus comprises a flow-meter chamber having an upper end and a lower end, the upper end having an inflow port and the lower end having an outflow port. The chamber includes a plastic bag positioned therein which is adapted to communicate with a volumetric container containing the solution. The solution flows from the volumetric container to the plastic bag thereby providing a measurement of the flow rate of the solution through the graft.