Prospective estimation of duration of pregnancy in women attending antenatal care at the Sultania Zanana Hospital, Gandhi Medical College Bhopal, Madhya Pradesh, India

Megha Goyal, Rekha Wadhwani


Background: Correct assessment of pregnancy duration and fetal growth is essential for optimal obstetric management. The objective of this study was to estimate the accuracy of Naegele’s formula in estimation of gestational age and duration of pregnancy in Sultania Zanana Hospital, Bhopal, Madhya Pradesh, India. Hospital based prospective observational study. Department of obstetrics and gynecology, Sultania Zanana Hospital, Gandhi Medical College, Bhopal, a one year study from April 2014 to March 2015.

Methods: This was a prospective observational study of 500 antenatal women selected at random with regular menstrual cycle, which knew their last menstrual period and delivered spontaneously in Sultania Zanana hospital between April 2014 to March 2015. The mean duration of pregnancy was calculated using Naegele`s formula.

Results: Most of the patients were in their 2nd decade of life. Most of them were para 2, 3 and 4. The mean duration of pregnancy was 276.04±8 days.

Conclusions: The duration of pregnancy 276 days appears more applicable in our environment.


LMP, EDD, Gestational age, Naegele`s rule

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Verburg BO, Steegers EAP, DeRidder M, Snijders RJM, Smith E, Hofman, et al. New charts for ultrasound dating in pregnancy and assessment of fetal growth: longitudinal data from a population based cohort study. Ultrasound Obstet Gynecol. 2008;31(4):388-96.

Ananth CV. Menstrual versus clinical estimate of gestational age dating in the United States: temporal trends and variability in indices of perinatal outcomes. Paediatr Perinat Epidemiol. 2007:21(2):22-30.

Parikh R, Pandia K. Erroneous calculation of the expected date of delivery by medical professionals. Chron Young Sci. 2011;2:171-3.

Bergso P, Denmam DW, Hoffman HJ, Meirik O. Duration of human singleton pregnancy. A population-based study. Acta Obstet Gynaecol Scand. 1990;69:197-207.

Kieler H, Axelsson O, Nilsson S, Waldenstrom U. The length of human pregnancy as calculated by ultrasonographic measurement of the fetal biparietal diameter. Ultrasound Obstet Gynecol. 1995;6:353-77.

Mittendorf R, Williams MA, Berkey CS, Cotter PF. The length of uncomplicated human gestation. Obstet Gynecol. 1990;75:929-32.