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Lack of association between heparin levels and ACT in pediatric patients undergoing cardiopulmonary bypass for cardiac surgery. There is no correlation between heparin concentration and ACT observed. Reprinted with permission from “Andrew M, MacIntyre B, MacMillan J, et al. Heparin therapy during cardiopulmonary bypass in children requires ongoing quality control. Thromb Haemost. 1993;70:940”.
