Late in 2004, Professor Bruce Spiess said the following about transfusing a primary blood component into patients undergoing heart surgery: “There are few if any [medical] articles that support transfusion actually improving patient outcome. ”
وبخلاف ما قد يظنه عديدون ،‏ ما من معايير موحدة تُتَّبع لتحديد الحالات التي تستلزم نقل دم .‏