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nt多高正常值是多少
更新时间: 2020-11-04 00:00:00  

NT是指胎儿的颈项透明层的厚度,如出现异常情况,提示胎儿可能有先天性发育的异常,或者是有畸形的情况。多数的生殖保健中心或者是彩超中心,提示NT值≤2.5mm或者是≤3.0mm是正常的,大于该数值则考虑有胎儿发育不良的情况。如果出现NT值异常的情况,一定要找产前诊断的医生进一步咨询检查,做羊水穿刺及染色体检查,排除胎儿是否有畸形。

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