摘要
目的 探讨经腹部超声诊断胚胎发育异常更为可靠的标准。方法 经腹部超声测量420例早期妊娠(孕5～8周)的胎囊最大直径和原始心管搏动,以诊断胚胎是否存活。结果 早期妊娠孕龄与胎囊最大直径呈显著正相关。r=0.9805,P<0.01;孕龄与原始心管搏动出现百分比也呈显著正相关,r=0.9912,P<0.01。胎囊最大直径20～24mm组和25～29 mm组原始心管搏动出现百分比分别为47.8％和48.0％,而胎囊最大直径30～34 mm组和≥35 mm组则分别为96.5％和96.1％。胎囊最大直径25～29mm组39例未见原始心管搏动者于7天后复查B超,胎囊最大直径均超过30 mm,其中38例出现原始心管搏动;胎囊最大直径≥30mm组108例中,仅4例未见原始心管搏动,于5～7天后复查B超。提示胚胎已死亡。结论 若超声测量胎囊最大直径超过30 mm仍然未见原始心管搏动,且胎囊变形,提示胚胎已经停止发育或死亡。
Objective To establisha more reliable criterion for the diangosis of abnormal embryo development by transabdominal ultrasonography. Methods The diameter of gestational sac and the emergence of primitive heart beat in 420 cases of early pregnant women were monitroed by transabdominal sonography to differentiate a viable from non-viable gestational sac. Results There was a signficantly positive correlation between the gestational sac development, primitive heart beat emergence and the gestational ages. When the gestational sac diameters were 20 to 24 mm (Ⅰ), 25～29 mm(Ⅱ), 30～34 mm (Ⅲ) and>35 mm (Ⅳ), the emergence rates of primitive heart beat were 47.8%, 48.0%, 96.5% and 96.1%, respectivdy. In group Ⅱ, the primitive heart beats were visualized by follow-up sonography in 38 out of 39 cases as their gestational sacs grew over 30 mm 7 days later. In groups Ⅲ and Ⅳ, the pirmitive heart beats were not visualized only in 4 out of 108 cases. In the follow-up scan of these 4 cases, 5～7 days later, the countour of their gestational sacs became slender and unevan with no heart beat visualized. Conclusion The embryo may be non-viable if there is still no pirmitive heart beat when the gestational sac diameter is over 30 mm as visualized by ultrasonography.
出处
《华中医学杂志》
2003年第3期125-126,共2页
Central China Medical Journal
