Comparison of the ratio of placental territory discordance to birthweight discordance in placentas of monochorionic diamniotic twins

被引：2

作者：

Wang Xueju ^{[1
]}

Li Luyao ^{[1
]}

Yuan Pengbo ^{[1
]}

Shi Huifeng ^{[1
]}

Zhao Yangyu ^{[1
]}

Wei Yuan ^{[1
]}

机构：

[1] Peking Univ Third Hosp, Dept Obstet & Gynecol, 49 Hua Yuan North Rd, Beijing 100191, Peoples R China

来源：

SCIENCE PROGRESS | 2021年 / 104卷 / 02期

关键词：

Vascular anastomoses; monochorionic twins; placenta; twin to twin transfusion syndrome; selective intrauterine growth restriction;

D O I：

10.1177/00368504211010595

中图分类号：

G40 [教育学];

学科分类号：

040101 ; 120403 ;

摘要：

The ratio of placental territory discordance to birthweight discordance was calculated in monochorionic diamniotic twin placentas. We then determined whether the ratio: (1) correlated with the overall diameter of the placental superficial vascular anastomoses and (2) was different in normal monochorionic diamniotic twin (normal MCDA), twin-to-twin transfusion syndrome (TTTS), and selective intrauterine growth restriction (sIUGR) pregnancies. A prospective study of MCDA placentas was conducted from April 1, 2016, to April 1, 2019, including three groups, normal MCDA (N = 49), TTTS (N = 38), and sIUGR (N = 52). Placentas were studied via dye injection. In the normal MCDA, sIUGR, and TTTS groups, the ratio positively correlated with the overall diameter of the placental superficial vascular anastomoses (Spearman's = 0.295, 0.619, and 0.530; p = 0.040, <0.001, and 0.001, respectively) and gradually decreased from normal MCDA to sIUGR and to TTTS (2.88 (0.34, 64.25), 1.70 (0.27, 4.52), and 1.03 (0.12, 15.17); p < 0.001, p = 0.016/<0.001/0.005, respectively). The placental territory discordance to birthweight discordance ratio is an effective index reflecting the overall vascular anastomoses in MCDA placentas.

引用

页数：9

共 12 条

[1] The Relationships of Umbilical Venous Volume Flow, Birthweight and Placental Share in Monochorionic Twin Pregnancies With and Without Selective Intrauterine Growth Restriction [J].