男，25岁，背部刀伤，伤口流血2小时。查体：神志尚清楚，诉口渴，皮肤苍白，稍冷，脉搏110次／分，血压90／70mmHg，表浅静脉塌陷，估计该患者的失血量占全身血容量
A．<5％
B．5％～15％
C．15％～30％
D．40％左右
E．50%左右
参考答案：C
解析：结合该患者的临床表现考虑目前存在失血性休克，该期患者多数神志清醒，脉压缩小，因肾素一血管紧张素系统被激活使ADH分泌增加，患者尿量减少并诉口渴。此时失血量一般约750～1500ml，占全身血容量的15％～30%。
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| Jenny and Bruce are good friends. They 1 from Canada. They speak English. They can speak a little Chinese.They 2 to play with their dolls. Jenny likes English very much. Bruce likes math. They 3 in Beijing, China now. The weather in Biejing is very good in October. They 4 to school five days a week (周). They like to play games (游戏) 5 Thursdays. They 6 go to school on Saturdays or Sundays. They have two Chinese friends. 7 names are Li Ming and Liu Dan. They are 8 the same class. They like their school. They like China. They say,"The 9 people (人民) are very kind (友好). The food is good, 10 ." |
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