胚胎停止发育一览表

标准	测量	诊断意义
平均孕囊直径 (MSD)	≥20mm（阴超） ≥25 mm（腹超）	若没看见卵黄囊或胚胎，表示胚胎停止发育
头臀长 (CRL)	≥7 mm（阴超） ≥9mm（腹超）	若无心跳，表示胚胎停止发育

参考文献：

https://www.tewhatuora.govt.nz/for-health-professionals/health-workforce-development/maternity/new-zealand-obstetric-ultrasound-guidelines-online/first-trimester/early-pregnancy-loss/

https://www.hse.ie/eng/services/publications/clinical-strategy-and-programmes/ultrasound-diagnosis-of-early-pregnancy-miscarriage.pdf

https://www.acog.org/clinical/clinical-guidance/practice-bulletin/articles/2018/11/early-pregnancy-loss

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