Risk factors for extremely preterm and very preterm birth
https://doi.org/10.23946/2500-0764-2022-7-4-8-17
Abstract
Aim. To evaluate the prevalence of preterm birth and risk factors for extremely preterm, very preterm, and moderate to late preterm birth.
Materials and Methods. We retrospectively assessed case histories of 11,500 pregnant women delivered in Kuzbass Regional Children's Clinical Hospital during 2019-2021 and their newborns. Among the studied factors were gestational age, birth weight, sex, 5-minute Apgar score, maternal age (< 20 years, 20-35 years, ≥ 35 years), parity (primiparity or multiparity), active smoking, maternal diseases during pregnancy (gestational hypertension, intrahepatic cholestasis of pregnancy, gestational diabetes mellitus, anemia, gastrointestinal and genitourinary diseases), chorioamnionitis, and pregnancy complications (placental abruption, placenta previa, vaginal bleeding, polyhydramnios), fetal distress, and fetal growth restriction.
Results. Prevalence of preterm birth was 8.4%. The potential risk factors for preterm birth were placental abruption, placenta previa, short (< 25 mm) cervix, intrahepatic cholestasis of pregnancy, gestational hypertension, chorioamnionitis, anemia, young (< 20 years) and advanced (≥ 35 years) maternal age, primiparity, active smoking, and fetal distress. Among them, placental abruption, placenta previa, short (< 25 mm) cervix, gestational hypertension, and chorioamnionitis were specific risk factors of extremely preterm and very preterm birth whilst intrahepatic cholestasis of pregnancy was the risk factor of moderate to late preterm birth.
Conclusion. Extremely preterm, very preterm, and moderate to late preterm birth have distinct risk factor profiles, highlighting the need for differential pregnancy management strategies.
About the Authors
D. E. BeglovRussian Federation
Dr. Dmitriy E. Beglov, MD, PhD Student, Department of Obstetrics and Gynecology
22а, Voroshilova Street, Kemerovo, 650056
N. V. Artymuk
Russian Federation
Prof. Natalia V. Artymuk, MD, DSc, Professor, Head of the Department of Obstetrics and Gynecology
22а, Voroshilova Street, Kemerovo, 650056
O. N. Novikova
Russian Federation
Prof. Oksana N. Novikova, MD, DSc, Professor, Department of Obstetrics and Gynecology
22а, Voroshilova Street, Kemerovo, 650056
K. V. Marochko
Russian Federation
Dr. Kristina V. Marochko, PhD, Associate Professor, Department of Obstetrics and Gynecology
22а, Voroshilova Street, Kemerovo, 650056
Ya. A. Parfenova
Russian Federation
Dr. Yana A. Parfenova, PhD Student, Department of Obstetrics and Gynecology
22а, Voroshilova Street, Kemerovo, 650056
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Review
For citations:
Beglov D.E., Artymuk N.V., Novikova O.N., Marochko K.V., Parfenova Ya.A. Risk factors for extremely preterm and very preterm birth. Fundamental and Clinical Medicine. 2022;7(4):8-17. (In Russ.) https://doi.org/10.23946/2500-0764-2022-7-4-8-17