head JofIMAB
Journal of IMAB - Annual Proceeding (Scientific Papers)
Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2020, vol. 26, issue1
Subject Area: Medicine
DOI: 10.5272/jimab.2020261.3023
Published online: 30 March 2020

Original article

J of IMAB. 2020 Jan-Mar;26(1):3023-3028
Irena Hristova1ORCID logo Corresponding Autoremail, Slavcho Tomov1ORCID logo, Nadezhda Hinkova1ORCID logo, Yordan Popov2ORCID logo, Joana Simeonova3ORCID logo,
1) Department of Midwifery, Faculty of Health Care, Medical University – Pleven, Bulgaria
2) Department of Obstetrics and Gynecology, Faculty of Medicine, Medical University – Pleven, Bulgaria
3) Department of Social Medicine, Faculty of Public Health, Medical University – Sofia, Bulgaria.

Purpose: To identify and assess the prevalence of the risk factors of obstetric status associated with premature births – total and according to maternal age at pregnancy.
Material and Methods: A case-control study was carried out in 2017 at the University Hospital – Pleven, including 1212 women in childbirth and 1212 live-born babies after single pregnancies. The women were divided into three age groups: under 19, 20-35 and over 35 years. The live-born infants were divided into two groups. The cases included 120 preterm and low-birth-weight newborns (PLBWN). The controls included 955 full-term newborns with normal birth weight (FTNNBW). We did not include 37 full-term newborns with low birth weight (FTNLBW) and 100 preterm newborns with normal birth weight (PNNBW) in the study to control confounding effects.  The role of 8 risk factors (RFs) on premature births was investigated.
Results: The prevalence of most RFs was higher in women under 18 and over 35 years of age compared with aged 20-35 years. Maternal pelvic size abnormalities (OR=3.31), breech presentation (OR=7.35), placental abnormalities (OR=4.23), caesarean birth (OR=2.28) increased the risk of preterm births and low birth weight.
Conclusions: There are many RFs associated with preterm births and low birth weight. These RFs need to be identified during pregnancy to reduce the prevalence of PLBWN and the health, economic and social consequences for children and their families, and for the health system and society.

Keywords: risk factors, obstetric status, women in childbirth, age groups, premature births,

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Please cite this article as: Hristova I, Tomov S, Hinkova N, Popov Y, Simeonova J. Assessment of risk factors of obstetric status associated with premature births in women in childbirth. J of IMAB. 2020 Jan-Mar;26(1):3023-3028. DOI: 10.5272/jimab.2020261.3023

Corresponding AutorCorrespondence to: Irena Hristova, Department of Midwifery, Faculty of Health Care, Medical University – Pleven; 1, St. Kliment Ohridski, 5800 Pleven, Bulgaria; E-mail: doc_hristova@abv.bg

1. Kambourova М. [Risk factors for premature births their effect on health and social needs in early childhood] [dissertation]. Pleven (Bulgaria): Medical University of Pleven; 2014. 189 p. [in Bulgarian]
2. Vakrilova L. [Early criteria for risk assessment and prognosis in low-birth-weight newborns] [dissertation]. Sofia (Bulgaria): Medical University of Sofia; 2011. 166 p. [in Bulgarian]
3. Kambourova М, Hristova I. [Factors family background of mothers involved in having a premature baby.] [in Bulgarian] Akush Ginekol (Sofiia). 2014;53(3):29-33. [PubMed]
4. Ivanov S. [Preterm birth and premature birth – the challenges of obstetrics and gynecology]. Health.bg. 2013 Jun;5:12-5. [in Bulgarian]
5. Boots AB, Sanchez-Ramos L, Bowers DM, Kaunitz AM, Zamora J, Schlattmann P. The short-term prediction of preterm birth: a systematic review and diagnostic metaanalysis. Am J Obstet Gynecol. 2014 Jan;210(1):54.e1-54.e10. [PubMed] [Crossref]
6. Linsell L, Malouf R, Morris J, Kurinczuk JJ, Marlow N. Prognostic Factors for Poor Cognitive Development in Children Born Very Preterm or With Very Low Birth Weight: A Systematic Review. JAMA Pediatr. 2015 Dec;169(12):1162-72. [PubMed] [Crossref]
7. Mercer BM, Goldenberg RL, Das A, Moawad AH, Iams JD, Meis PJ, et al. The preterm prediction study: a clinical risk assessment system. Am J Obstet Gynecol. 1996 Jun;174(6):1885-93. [PubMed] [Crossref]
8. Dimitrov A. [Obstetrics]. Sofia: АRSО; 2014. 301 p. [in Bulgarian]
9. Karamisheva V. [Risk assessment and behavior in preterm birth] [dissertation]. Sofia (Bulgaria: Medical University of Sofia; 2016. 182 p. [in Bulgarian].
10. Katzulov А. [Pregnancy with high risk]. Sofia: Medicine and Physical education; 1989. 247 p. [in Bulgarian]
11. Katzulov А. [Birth with high risk]. Sofia: Medicine and Physical education; 1990. 264 p. [in Bulgarian]
12. Carmichael SL, Abrams B. A critical review of the relationship between gestational weight gain and preterm delivery. Obstet Gynecol. 1997 May;89(5 Pt 2):865-73. [PubMed] [Crossref]
13. Maness SB, Buhi ER, Daley EM, Baldwin JA, Kromrey JD. Social Determinants of Health and Adolescent Pregnancy: An Analysis From the National Longitudinal Study of Adolescent to Adult Health. J Adolesc Health. 2016 Jun;58(6):636-43. [PubMed] [Crossref]
14. Farag AH, Mohammed MM, Ellaithy MI, Salama HA. Blind vaginal fetal fibronectin swab for prediction of preterm birth. J Obstet Gynaecol Res. 2015 Jul;41(7):1009-17. [PubMed] [Crossref]
15. Fox NS, Saltzman DH, Fishman A, Klauser CK, Gupta S, Rebarber A. Gestational age at cervical length and fetal fibronectin assessment and the incidence of spontaneous preterm birth in twins. J Ultrasound Med. 2015 Jun;34(6):977-84. [PubMed] [Crossref]
16. Merkx A, Ausems M, Bude L, de Vries R, Nieuwenhuijze MJ. Factors affecting perceived change in physical activity in pregnancy. Midwifery. 2017 Aug;51:16-23. [PubMed] [Crossref]
17. Tucker CM, Berrien K, Menard MK, Herring AH, Daniels J, Rowley DL, et al. Predicting Preterm Birth Among Women Screened by North Carolina's Pregnancy Medical Home Program. Matern Child Health J. 2015 Nov;19(11):2438-52. [PubMed] [Crossref]
18. van der Ven AJ, van Os M, van den Wijngaard L, Mochtar MH, de Bekker-Grob EW, Kazemier BM, et al. Patient’s Preferences for Management Options in Relation to Preterm Birth.  J Health Med Informat. 2015; 6(3):189.
19. Asvanarunat E. Outcomes of gestational weight gain outside the Institute of Medicine Guidelines. J Med Assoc Thai. 2014 Nov;97(11):1119-25. [PubMed]
20. Abdulla SY, Al-Hadithi T. Perinatal outcome of breech presentation at the Maternity Teaching Hospital in Erbil City. JSMC. 2014; 4(2):81-85. [Crossref

Received: 10 June 2019
Published online: 30 March 2020

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