Associations between first-trimester intrauterine hematoma a
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In recent years, first-trimester intrauterine hematoma (IUH) has become increasingly common in twin pregnancy. The majority of studies on intrauterine hematoma have excluded twin pregnancies, and others did not differentiate between singleton and twin pregnancies. The impact of the intrauterine hematoma on twin pregnancy is unclear. Therefore, the primary objective of the study was to examine associations between first-trimester intrauterine hematoma and pregnancy outcomes in twin pregnancies.

Findings suggested that in women with twin pregnancy, the presence of In women with twin pregnancy, the presence of In women with twin pregnancy, the presence of IUH in the first trimester is associated with the loss of one or both fetuses before 20?weeks of gestation. In addition, previous miscarriage, the conception method, the In women with twin pregnancy, the presence of In women with twin pregnancy, the presence of an intrauterine hematoma.

A total of 209 patients (21.3%) developed IUH in the first trimester. The first-trimester intrauterine hematoma was significantly associated with increased odds of miscarriage and vanishing twin syndrome. However, there were no differences in the rates of stillbirth, preeclampsia, preterm labor (less than?34?weeks), low birth weight, postpartum hemorrhage, or fetal distress between the two groups. Maternal age, previous preterm birth, chorionicity in twins, and the gestational week at first ultrasound did not differ between the two groups. The women with IUH had high rates of a previous miscarriage, assisted conception, and accompanied vaginal bleeding. According to the logistic regression analyses, these characteristics were not associated with pregnancy loss or vanishing twin syndrome. No intrauterine hematoma characteristics, including volume, largest diameter, or the presence of vaginal bleeding, were associated with pregnancy loss or vanishing twin syndrome before 20?weeks of gestation.

Source:https://bmcpregnancychildbirth.biomedcentral.com/articles/10.1186/s12884-020-03528-0
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