Study of Sonographic Value of Biparietal Diameter as a Parameter for Estimation of Gestational Age in Tehran Mirza Kuchak Khan Hospital and Hamadan Fatemieh Hospital in 1994

• Main Authors: Zohreh Alizadeh, Batool Nasrolah Zadeh
• Format: Article
• Language: fas
• Published: Hamadan University of Medical Sciences 2000-06-01
• Series: پزشکی بالینی ابن سینا
• Subjects: fetal development / gestational age / ultrasonography; prenatal
• Online Access: http://sjh.umsha.ac.ir/article-1-953-en.html

Accurate  knowledge  of fetal  age  is  very  important .  A number of    methods  can  be used to determine an accurate gestational age . With    routin  use  of  ultrasonography  more  information about the anatomy of    the  fetus  can  be  obtained . one of  the  parameter that can be used is    biparietal diameter .         This   study   was   carried  out in 386 pregnant women with known last    menstrual period . Regression   analysis  was   performed  to evaluate the    relationship  between biparietal diameter and menstrual age.          Regression analysis indicated that menstrual age could be predicted    with3.5 weeks with 95% interval confidence.This was also computed for    three gestational  age  interval :  20-26  weeks ,  26 - 32  weeks and 32-42    weeks.The results indicated that prediction   of  age become progressivly    less accurate as pregnancy proceed .