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| The characteristics of uterine artery blood flow by ultrasonic examination of women with missed abortion and its predictive value for missed abortion |
| 1. Zhejiang University of Traditional Chinese Medicine, Hangzhou City, Zhejiang Province, 310053; 2. Wenzhou People's Hospital of Zhejiang Province |
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Abstract To analyze the characteristics change of uterine arterial blood flow indictor by ultrasonic examination of women with missed abortion, and to explore its predictive value for missed abortion. Methods: Women with the first trimester pregnancy who had undergone ultrasound examination were selected as research objects, and were divided into group A (58 women with missed abortion), group B (31 women in transition period of missed abortion), and group C (120 normal pregnant women) according to the results by ultrasonic examination. Uterine artery blood flow was detected by transvaginal Doppler ultrasound, and the predictive value of uterine artery blood flow peak/end diastolic flow rate(S/D), resistance index (RI), and pulse index (PI) for missed abortion were compared among the three groups. Results: During initial diagnosis of women with missed abortion, <10 gestational weeks, or 10 -12 gestational weeks, the values of S/D, RI and PI of uterine artery of women in group B were significant higher than those of women in group A, while those were significant lower than those of women in group C (P<0.05). RI value of uterine artery had some predictive effect for missed abortion (P<0.001), which’s AUC, the cutoff value, the sensitivity, and the specificity were 0.802, 0.854, 84.5%, and 74.8%, respectively. But the values of PI and S/D of uterine artery had no predictive efficacy for missed abortion (P>0.05). Conclusion: The S/D, RI and PI values of uterine artery tend to rise before missed abortion, so the uterine artery blood flow resistance indexes by transvaginal Doppler ultrasound has certain predictive value for missed abortion.
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