[img=left]http://d.yimg.com/us.yimg.com/p/rids/20080319/i/r378128003.jpg?x=130&y=87&q=85&sig=euym1y8e1GwahSI4UFKkqw--[/img]AP - Heart surgery patients were more likely to die or suffer problems if they received transfusions of blood that is more than two weeks old rather than fresher blood, according to a new study that adds to the debate about the shelf life of blood.