题目内容
患者，男性，36岁，因交通事故致肝脾破裂手术治疗，术中输贮存全血4500ml，新鲜浓缩血小板2个治疗量，出现皮肤发冷，青紫，血压95／70mmHg，创面渗血不止。化验：血清钾6.5mmol／L，血清钙1.85mmol／L，血液红细胞计数2.6×1012/L，血小板计数为40×109/L，Hb10lg/L，凝血酶原时间、部分凝血激酶时间延长，纤维蛋白原稍降低。并出现手足抽搐症状，心电图显示Q-T间期延长，并伴有心律不齐。根据患者病情，下列血液成分制剂不必要的是（）
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