Prediction of and a risk group for delayed labor


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Abstract

Objective. To assess the features of somatic, obstetric and gynecologic histories and the course of pregnancy in order to determine factors and to identify a risk group for delayed labor. Subjects and methods. The study included 957 healthy primiparas and secundiparas and their newborns. The data of family, somatic and obstetric/gynecologic histories were analyzed to clarify differences in the course of pregnancy and childbirth during timely and delayed childbirth. Results. Post-term pregnancy was found to be more common in some types of extragenital pathology, such as diseases of ENT (p = 0.01), urinary system (p = 0.01), and visual organs (p = 0.01), and a male fetus (p = 0.0001). The significant risk factors of post-term pregnancy included the birth of a pregnant woman herself (OR = 4.6; 2.5-8.3; p < 0.0001) or that of the father of the child (OR = 3.8; 1.7-8.1; p = 0.0005) due to delayed labor, a history of post-term pregnancy (OR = 2.2; 1.2-4.1; p = 0.01), and birth canal unreadiness for childbirth in primiparas at 284 days or more (p < 0.0001) and in secundiparas at 283 days or more (p < 0.0001). Taking into account the gender of a fetus and medical history data, a prognostic model was created using the binary logistic regression method. Conclusion. The most significant risk factors for post-term pregnancy are diseases of ENT, urinary system, and visual organs, a male fetus, birth of parents from delayed labor, a history of post-term pregnancy, birth canal unreadiness for childbirth in primiparas at 284 days or more and in secundiparas at 283 days or more.

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About the authors

Oleg V. Tysyachnyi

Academician V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology, and Perinatology, Ministry of Health of Russia

Email: olti23@mail.ru
junior scientific researcher of the first maternity departments

Oleg R. Baev

Academician V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology, and Perinatology, Ministry of Health of Russia

Email: metod_obsgyn@hotmail.com
MD, Phd, professor, the head of the first Maternity Department

Andrey A. Chausov

Academician V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology, and Perinatology, Ministry of Health of Russia

Email: он 84954386948.Электронная почта a_chausov@oparina4.ru
junior scientific researcher of the Department of medical and social research

Lyubov V. Krechetova

Academician V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology, and Perinatology, Ministry of Health of Russia

Email: l_krechetova@oparina4.ru
Phd., the head of Laboratory of clinical immunology

Evgeniy A. Chernukha

Academician V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology, and Perinatology, Ministry of Health of Russia

Email: e_chernuha@oparina4.ru
MD, Phd, professor, consultant of the first obstetric physiological Department

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