| 单词 | placenta praevia |
| 释义 | placenta praeviaplacenta praeviaA PLACENTA situated in the lower part of the womb near the cervix, or wholly or partially covering the outlet. Such placement may make normal delivery impossible and inevitably result in separation and vaginal bleeding when labour starts. Placenta praevia can be detected by ultrasound scanning and in such cases the baby is usually delivered by Caesarean section around the 38th week. |
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