Published: 2017-04-27

A clinical study of postdated pregnancy

Shilpa Nitin Chaudhari, Devika B. Bhikane, Priyanka Gupta


Background: Objective of the study was to find out the incidence of maternal complications, perinatal mortality and morbidity in postdated pregnancies. Design of the study was prospective observational study.

Methods: Patients who have completed 40 weeks of gestational age, patients who were sure of the date of last menstrual period (LMP) along with 1st trimester obstetrics scan were included. Patients not sure of LMP were excluded.

Results: There is high fetal and maternal risk associated with postdated pregnancy. Total 100 cases were selected from antenatal clinic and Labour Room and were divided into two groups. Study group and control group, 50 cases in each. Induction rate is more in postdated pregnancies. Incidence of operative deliveries is 54% in study group. Postpartum haemorrhage and septicaemia are the most common maternal complication in the study group. Perinatal mortality is higher and more NICU admissions were required.

Conclusions: Considering this, policy of early intervention should be undertaken in postdated pregnancy to avoid maternal and perinatal complications.


Maternal complications, Post datism, Perinatal morbidity

Full Text:



Fernando Arias. Practical guide to high risk pregnancy and delivery 3 Edition; India Harcourt private limited; 2008:255-270.

Olesen AW, Westergaard JG, Olsen J. Perinatal and maternal complications related to post term delivery: a national register-based study, Am. J Obstet Gynecol. 1978-1993;189:222-227.

Norwitz ER, Snegovskikh VV, Caughey AB Prolonged pregnancy: when should we intervene? Clin Obstet Gynecol. 2007;50:547-57.

Vorherr H. Placental insuffiency in relation to postterm pregnancy and fetal postmaturity: Evaluation of fetoplacental function Management of post term gravida. Am J Obstet Gynecol. 1975;123:67.

Jones JP, Fox H. Ultrastructure of the placenta in prolonged pregnancy. J Pathol. 1978;126(3):173-9.

Spellacy WN, Miller S, Winegar A, Peterson PQ. Macrosomia maternal characteristics and infant complications. 1985;66(2):158-61.

Ratnam SS, Arulkumaran S. Post term infant. Obstetrics and Gynecology, 2nd Edition, India Orient Longman. 2003;2:48-53.

Rand L, Robinson JN, Economy KE. Post-term induction of labor revisited. Obstet Gynecol. 2000;96(5 Pt 1):779-83.

Campbell MK, Ostbye T, Irgens LM. Post-term birth: risk factors and outcomes in a 10-year cohort of Norwegian births. J Obstet. Gynecol. 1997;89(4):543-8.

Alexander JM, McIntire DD, Leveno KJ. Forty weeks and beyond: pregnancy outcomes by week of gestation. Obstet Gynecol. 2000;96(2):291-4.

Treger M, Hallak M, Silberstein T. Post-term pregnancy: should induction of labor be considered before 42 weeks? J Maternal Fetal Neonatal Med. 2002;11(1):50-3.

Eden RD, Seifert LS, Winegar A. Perinatal characteristics of uncomplicated postdate pregnancies. Obstet. Gynecol. 1987;69:296-9.

Gulmezoglu AM, Crowther CA, Middleton P, et al; Induction of labour for improving birth outcomes for women at or beyond term. Cochrane Database Syst Rev. 2012;6:CD004945.

Beischer NA, Evans JH, Townsend L. Studies in prolonged pregnancy. I: Incidence of prolonged pregnancy. Am J Obstet Gynecol. 1969;103:476.

Bancroft-Livingston G, Neill DW. Studies in prolonged pregnancy, Cord blood oxygen levels at delivery. J Obstet Gynaecol.1957;64:498-503.

Reddy UM, KO CW, Willinger M. Maternal age and risk of stillbirth throughout pregnancy in the United states. Am J Obstet Gynecol. 2006;195(3):764-70.

Katz Z, Yemini M, Lancet M, Mogilner BM, Ben-Hur H, Caspi B. Non-aggressive management of post-date pregnancies. Eur J Obstet Gynecol Reprod Biol. 1983;15:71-9.

Luckas M, Buckett W, Alfirevic Z. Comparison of outcomes in uncomplicated term and post-term pregnancy following spontaneous labor. J Perinat Med. 1998;26:475.

Jerry S, Douglas JG, Andrews J. Management of prolonged pregnancy. Am. J. Obstet. Gynecol. 1984:148:547.

Schneider JM, Olson RW, Curet LB. Amniotic fluid volume as predictor of foetal distress in postdated pregnancy. Am. J. Obstet. Gynecol. 1978;131:473.

Crowley P. Interventions for preventing or improving the outcome of delivery at or beyond term. Cochrane Database Syst Rev. 2006;(4):CD000170.

Wennerholm UB, Hagberg H, Brorsson B, Bergh C. Induction of labor versus expectant management for post-date pregnancy: is there sufficient evidence for a change in clinical practice? Acta Obstet Gynecol Scand. 2009;88:6-17.

Vaidya PR. Post date pregnancy and it’s perinatal charectristics J. Obstet. Gynecol. India 1985;35:670.

Thakur R, Kelkar YV, Shrivastava N. Perinatal risks in postdated pregnancy resented in 29th all India congre3ss. Obstet. Gynecol; 1985.

Parry E, Parry D, Pattison N. Induction of labour for post term pregnancy: an observational study. Aust N Z J Obstet Gynaecol. 1998;38:275.

Martinb C, De Paula. Marque AM, Silva D. J. Obstet. Gynecol. 1969;56:830.

Caughey AB, Stotland NE. Washington AE, Escobar GJ. Maternal Complications of Pregnancy Increase Beyond 40 Weeks’ Gestation. Am J Obstet Gynecol. 2007;1969:155.