Outcomes and biochemical parameters following cardiac surgery: effects of transfusion of residual blood using centrifugation and multiple-pass hemoconcentration.

Objectives: To determine whether or not there was a significant difference between the methods of centrifugation (CF) and multiple-pass hemoconcentration (MPH) of the residual cardiopulmonary-bypass volume in relation to biochemical measurements and patient outcomes.

Design: Prospective, randomized, and controlled.

Setting: Conducted at a western Canadian tertiary care hospital.