天气预报 > 其他 > 胎儿五个月脐动脉正常值是多少
胎儿五个月脐动脉正常值是多少
更新时间: 2020-11-05 00:00:00  

怀孕五个月,正常妊娠脐动脉血流S/D值岁孕周增大而逐渐降低,S/D从早孕大于4,随着孕周增长可以降到小于3,甚至是2以下。这表明胎盘逐渐成熟,胎盘内血管包括母体妊娠子宫血液循环那部分的动脉/静脉逐渐增多.增粗,胎盘外周阻力下降.使脐动脉在舒张期时仍能维持足够的血流一满足胎儿的血液供应。

应定期做好产前检查,尽量保持情绪稳定,心情愉悦,睡眠充足即可。多喝水,多吃蔬菜水果,睡觉取左侧卧位。

关键词: 胎儿 动脉 正常值 多少

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