单词如何理解？

If this patient’s blood type is unknown, which type of blood should be given in an emergency resuscitation?

This patient should receive type-O negative or uncrossmatched packed red blood cells if crossmatched are not immediately available [23]. Type-AB fresh plasma and apheresis platelets should be given in an emergency-release transfusion if the patient’s blood group is unavailable [24,25]. If an Rh negative patient receives Rh positive platelets in an emergency transfusion, she should receive Rho(D) immune globulin afterwards.

如果这位患者的血型不明，紧急复苏时应该输哪种血？

如果不能立即获得交叉配型，该患者应该接受O型阴性或无需交叉配型的包装红细胞[23]。如果患者没有血型，AB型新鲜血浆和分离血小板应该在紧急释放输血中输注[24，25]。如果Rh阴性的患者在紧急输血中接受Rh阳性的血小板，她应该在随后接受Rho(D)免疫球蛋白。

uncrossmatched 理解为 无需交叉配型？apheresis理解为  分离？