Abstract:
To compare the relative accuracy of Hadlock and Shepard’s methods for intrapartum fetal weight estimation on ultrasound. This prospective observational study was carried out in the department of Obstetrics at Pakistan Institute of Medical Sciences Islamabad from October till December 1996. It included 46 women in early labour with singleton pregnancies delivering within 24 hours of the ultrasound assessment. The Femur length. biparietal diameter and abdominal circumference were measured on ultrasound and fetal weight was estimated using Hadlock’s and Shepard’s tables. After the delivery actual birth weight was recorded in grams. Paired sample t test and Pearson’s correlation coefficient was calculated. The mean actual birth weight (3293 grams) was statistically not different from the mean estimated fetal weight by either Hadlock’s method (3313 grams) (P=0.18) or by Shepard’s method (3281.5 grams) (P=0.39). Shepard’s method has a slightly better positive correlation (0.98) (P-value=0.00) with actual birth weight than the Hadlock’s method (0.97) (P-value = 0.99). Both the methods correlate well with actual weight. There is no statistically significant difference between the accuracy of these two methods.
Page(s):
101-112
DOI:
DOI not available
Published:
Journal: Journal of Surgery (PIMS), Volume: 26, Issue: 2, Year: 2003