Abstract:
Estimation of the exact date of confinement by the
obstetricians has been for a long time calculated by the Nagele's
rule (LMP plus 7 days minus 3 months). Estimation of an accurate
gestational age is essential by which an obstetrician will be
successful in managing an antenatal patient. Many a times the
patients do not remember their exact date of LMP.
Estimation of gestationalage on the basis of
measurement of the biparietal diameter by the ultrasonographic
methods is being followed in most of the hospital.Various workers
like Hadlock et al6, Berger et al2°, Dewhurst et a|2', Sabbagha eta| 23
Campbell 24, Parker et a| 26, Dubowitz and Goldberg et al 27, Okupe
et a| 28, Varma 32 have observed the changes in the BPD at various
gestational ages. They have also laid down the various table by
which gestational age can be estimated by a given BPD.
