WHAT IS A LOW-LYING PLACENTA

被引:63
作者
OPPENHEIMER, LW
FARINE, D
RITCHIE, JWK
RITCHIE, JWK
LEWINSKY, RM
TELFORD, J
FAIRBANKS, LA
机构
[1] UNIV TORONTO,MT SINAI HOSP,DEPT PERINATOL,ROOM 775,600 UNIV AVE,TORONTO M5G 1X5,ONTARIO,CANADA
[2] UNIV TORONTO,MT SINAI HOSP,DEPT OBSTET & GYNECOL,DIV PERINATOL,TORONTO M5G 1X5,ONTARIO,CANADA
关键词
PLACENTA PREVIA; TRANSVAGINAL ULTRASONOGRAPHY; CESAREAN SECTION;
D O I
10.1016/0002-9378(91)90465-4
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
Transvaginal ultrasonography was performed in 127 women thought to have placenta previa. In all cases of complete previa, placental location was confirmed at cesarean section. Where the placenta was situated in the lower segment of the uterus but did not cover the cervical os the distance from the placental edge to the internal cervical os was measured. This distance was analyzed in relation to the route of delivery. No patient with a placental edge > 2 cm from the internal cervical os required cesarean section for the indication of placenta previa, whereas seven of eight patients with a distance of less-than-or-equal-to 2 cm underwent cesarean section because of bleeding characteristic of a placenta previa. These preliminary results suggest that transvaginal ultrasonography measurement may indicate the optimal delivery route and make the traditional classification of placenta previa obsolete.
引用
收藏
页码:1036 / 1038
页数:3
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