Summary
This prospective study was conducted to compare risk factors and pregnancy outcomes between women with complete placenta previa and those with incomplete placenta previa diagnosed in mid-pregnancy. The study was carried out from April 2014 to December 2015, during which 70 patients with complete previa and 113 with incomplete previa between 20+0 weeks and 25+6 weeks of gestation were included. Maternal demographics and pregnancy outcomes were compared between the two groups. Comparisons between categorical variables were tested by chi-squared test and those between continuous variables by Student t test. Resolution of previa occurred in 87.43% of the studied women. The mean gestational age at resolution was 32.1±4.4 weeks. Incidence of maternal age ≥35 years and incidence of prior uterine operation ≥3 were high in women with complete previa (28.6% vs 8.8%, P=0.003; 28.6% vs. 8.8%, P=0.003). Resolution of previa occurred less often in complete previa group (74.3% vs. 95.6%, P=0.001). Women with complete previa admitted earlier (37.3±2.0 weeks 38.1±1.4 weeks, P=0.011) and delivered earlier (37.7±1.2 weeks vs. 38.3±1.4 weeks, P=0.025). Maternal age ≥35 years and prior uterine operation ≥3 increase the risk of complete previa in mid-pregnancy. Placenta previa is more likely to persist in women with complete previa than those with incomplete previa diagnosed in midpregnancy. What is more, women with complete previa in mid-pregnancy delivers earlier.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Wexler P, Gottesfeld KR. Early diagnosis of placenta previa. Obstet Gynecol, 1979, 54(2):231–234
Becker RH, Vonk R, Mende BC, et al. The relevance of placental location at 20–23 gestational weeks for prediction of placenta previa at delivery: evaluation of 8650 cases. Ultrasound Obstet Gynecol, 2001, 17(6):496–501
Tuzovic L. Complete versus incomplete placenta previa and obstetric outcome. Int J Gynaecol Obstet, 2006, 93(2):110–117
Dola C, Garite TJ, Dowling DD, et al Placenta previa: does its type affect pregnancy outcome? Am J Perinatol, 2003, 20(7):353–360
Gorodeski IG, Bahari CM. The effect of placenta previa localization upon maternal and fetal-neonatal outcome. J Perinat Med, 1987, 15(2):169–177
Morgan J. Placenta praevia: report on a series of 538 cases (1938–1962). J Obstet Gynaecol Br Commonw, 1965, 72(5):700–705
Crenshaw С Jr, Jones DE, Parker RT, et al. Placenta previa: a survey of twenty years experience with improved perinatal survival by expectant therapy and cesarean delivery. Obstet Gynecol Surv, 1973, 28(7):461–470
Cotton DB, Read JA, Paul RH, et al. The conservative aggressive management of placenta previa. Am J Obstet Gynecol, 1980, 137(6):687–695
Dashe JS, Mclntire DD, Ramus RM, et al. Persistence of placenta previa according to gestational age at ultrasound detection. Obstet Gynecol, 2002, 99(5 Pt l):692–697
Salker M, Teklenburg G, Molokhia M, et al Natural selection of human embryos: impaired decidualization of endometrium disables embryomaternal interactions and causes recurrent pregnancy loss. Plos One, 2010, 5(4):el0287
Cho JY, Lee YH, Moon MH, et al. Difference in migration of placenta according to the location and type of placenta previa. J Clin Ultras, 2008, 36(2):79–84
King DL. Placental migration demonstrated by ultrasonography. A hypothesis of dynamic placentation. Radiology, 1973, 109(1):167–170
Varma TR. The implication of a low implantation of the placenta detected by ultrasonography in early pregnancy. Acta Obstet Gynecol Scand, 1981, 60(3):265–268
Debski R, Makuch K. Ultrasonographic assessment of changes in the location of the lower border (termed migration) of the placenta. Wiadomosci lekarskie, 1990, 43(11):506–510
Li WZ, Yong TZ. Continuous ultrasonic observation on the change of location of placenta in placenta previa. Zhonghua Fu Chan Ke Za Zhi (Chinese), 1990, 25(6):335–336
Green JR. Placenta previa and abruptio placenta. In: Creasy RK, ResnikR, (eds) Maternal-Fetal Medicine: Principles and Practice. 3rd ed. Philadelphia: WB Saunders, 1994, 602–607
Acknowledgements
The authors would like to thank the staff of the Ultrasound Department of Obstetrics and Gynaecology and Medical Records Department.
Author information
Authors and Affiliations
Corresponding author
Additional information
This project was supported by grants from National Natural Science Foundation of China (Nos. 81701476 and 81200354), Hubei Provincial Population and Family Planning Commission of China (No. JS-20130017), and Applied Basic Research Plan of Wuhan (No. 2015060101010037).
Rights and permissions
About this article
Cite this article
Feng, Y., Li, Xy., Xiao, J. et al. Risk Factors and Pregnancy Outcomes: Complete versus Incomplete Placenta Previa in Mid-pregnancy. CURR MED SCI 38, 597–601 (2018). https://doi.org/10.1007/s11596-018-1919-9
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11596-018-1919-9