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| Influence of delivery mode of the women with full-term pregnancy on their preterm delivery of the subsequent pregnancy |
| 1. Wolong District Maternal and Child Health Care Hospital, Nanyang, Henan Province, 473000；2. The Third Affiliated Hospital of Zhengzhou University |
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Abstract To explore the influence of delivery mode of the women with full-term pregnancy on their spontaneous preterm birth (sPTB) of the next pregnancy. Methods: A retrospective study was conducted on the singleton women who had delivered their second child from February 2018 to April 2021 were divided into group A, group B (women with sPTB), and group C (women with therapeutic preterm birth) according to their delivery outcomes. The clinical data of the women were compared among the three groups. Logisitic regression was used to analyze the influence of delivery mode of the women with full-term pregnancy on the sPTB and the therapeutic preterm birth of the women during the next pregnancy. Results: The emergency cesarean section when the cervix uteri dilated to 10cm of the primipara (OR=2.062, 95%CI 1.405-3.026) was a risk factor of their sPTB during the second pregnancy. The selective cesarean section (OR=2.308, 95%CI 1.266-4.208), the emergency cesarean section when the cervix uteri dilated <4cm (OR=4.683, 95%CI 990-11.022), and the emergency cesarean section when the cervix uteri dilated 4-9cm (OR=2.432, 95%CI 1.206-4.906) of the primipara were the risk factors of their therapeutic therapeutic preterm birth during the second pregnancy. Conclusion: Emergency cesarean section when the cervix uteri dilated to 10cm of the primipara is related to their sPTB during the second pregnancy and delivery. The selective cesarean section, the emergency cesarean section when the cervix uteri dilated <4cm, and the emergency cesarean section when the cervix uteri dilated 4-9cm of the primipara are related to their therapeutic therapeutic preterm birth during the second pregnancy.
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