摘要
报告孕龄在２１～３８周的孕妇６８例，按孕龄将胎儿分为三个组：２１～２６周，２７～３２周，３３～３８周。测量胎儿二尖瓣口的血流速度Ｅ、Ａ、Ｅ／Ａ、ＥＩ、ＡＩ、ＥＩ／ＡＩ、ＴＩ、ＳＶ＝ＴＩ·Ａｒｅａ。结果显示：①Ｅ、ＥＩ随胎龄的增加而显著增加；②Ａ峰随胎龄的增加而轻度降低，这种变化没有显著性差异；③Ｅ／Ａ、ＥＩ／ＡＩ随胎龄而增加，具有显著性；④ＳＶ胎龄而增加，在每二组间都有显著性；⑤ＨＲ变化不大。
Sixty-eight normal fetuses from 18 to 38 weeks of gestation were examined by Doppler echoecrrdigraphy to measure the blood flow velocity through the mitral valve. The fetuses were divided into three groups according to their gestational age: 21 to 26, 27 to 32 and 33 to 38 weeks.The parameters measured were E.A .E/A.EI.AI.EI/AI .TI and SV (SV=TI·Area).The results showed that:①E and EI.E/A and EI/AI increased significantly with the time of gestation,A decresed slightly but the change was not.②The increase of SV with the fime of gestation was found and was significant between either two groups.③There were no conspicuous change in heart rate throughout gestation.
出处
《中华超声影像学杂志》
CSCD
1996年第2期81-83,共3页
Chinese Journal of Ultrasonography
