To explore the relationship between the etiology, degree, and time of uterine torsion during pregnancy and the outcome for mothers and infants.

A case treated by Longyan People′s Hospital and 39 clinical data of 71 patients with uterine torsion during pregnancy reported by CNKI and Wanfang database since 2003 were analyzed retrospectively.

Among 72 cases of uterine torsion during pregnancy, 34 cases (47.22%) had a uterine malformation, 12 cases (16.67%) had hysteromyoma, 11 cases (15.28%) had other causes and 15 cases (20.83%) had an unknown cause. The clinical symptoms included 59 cases of abdominal pain (81.94%), 34 cases of hemorrhagic shock (47.22%), 25 cases of digestive system symptoms such as nausea and vomiting (34.72%), and 11 cases of dysuria (15.28%). Among the 72 patients, there were 7 twins, including 40 stillborn fetuses (50.63%), 32 fetuses with normal fetal heart rate (40.51%), 7 fetuses with fetal distress (8.86%), 1 fetus with normal fetal heart rate, and 4 fetuses with fetal distress disappeared before delivery, and a case of fetal death induced by rivanol after 20 weeks of menopause, therefore, the total number of fetal losses is 46. One fetus died due to rivanol-induced labor, so the number of fetuses was 45 when calculating the fetal loss caused by uterine torsion. Adverse outcomes of pregnant women with uterine torsion included 45 fetal losses (57.69%), 36 placental abruptions (50%), 34 hemorrhagic shock (47.22%), 31 hysterectomies during cesarean section (43.06%), and 1 maternal death (1.39%).

The main causes of uterine torsion during pregnancy are uterine malformation, and hysteromyoma. The main clinical features are abdominal pain, nausea and vomiting, severe exhaust cases, defecation, dysuria, fetal distress, hemorrhagic shock and maternal and fetal death.The prognosis of the mother and fetus is related to the severity of uterine torsion.