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22周的胎儿羊水多少正常
更新时间: 2020-11-04 00:00:00  

女性在怀孕22周时,如果胎儿生长发育比较快,平时月经周期又提前,这时就可以考虑做四维彩超检查,看胎儿的实质器官有无畸形。在做四维彩超检查时会检测羊水指数是否在正常范围内。一般22周羊水指数的正常范围是在8~18厘米左右。如果羊水指数小于8厘米,就称之为羊水偏少,当羊水指数小于5厘米以下,就称之为羊水过少。如果羊水指数超过20厘米,就称之为羊水过多。无论是羊水过少还是羊水过多,都可能是由于胎儿畸形或者是有妊娠期糖尿病,甚至是妊娠期高血压导致的异常现象。如果这时四维彩超已经发现有明显的胎儿畸形,还伴有羊水指数异常,需要考虑引产终止妊娠。

关键词: 胎儿 羊水 多少 正常

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