背景近来,出血的处理多是输注血小板而很少采用其他办法。本项研究目的在于对4个国家血小板研究资料进行描叙性归纳,并探讨出血和血小板计数间的关联性。研究设计与方法对于来自意大利应急研究所、美国TRAP研究所、加拿大发热反应研究所和英国一家医院临床回归资料的原始数据进 Background Recently, the treatment of bleeding is mostly the infusion of platelets and rarely used other methods. The purpose of this study was to describe the literature on platelets in four countries and to investigate the association between bleeding and platelet count. Study Design and Methods For raw data from clinical emergency data from the Italian Institute of Emergency Research, the US TRAP Institute, the Canadian Institute of Heath Reaction and a British hospital