2100mlB....">
A.>2100ml B.2100~1700ml C.1700~1200ml D.1200~800ml E.<75ml
A.<75ml B.1700~1200ml C.2100~1700ml D.1200~800ml E.>2100ml
A.血容量不足 B.劇烈的疼痛 C.心律失常 D.合并急性二尖瓣關閉不全 E.過多使用止痛鎮(zhèn)靜劑