Год выпуска: 2014 Автор: Sumit Babuta and Rohin Garg Издательство: LAP Lambert Academic Publishing Страниц: 140 ISBN: 9783659503665
Описание
Accurate knowledge of gestational age is the key for successful antepartum care and critical interpretation of antenatal tests and successful planning of appropriate intervention. Ultrasound scanners have given a number of ultrasonic biometric parameters to determine gestational age. The most commonly used are CRL, BPD, HC, AC, FL to determine gestational age, fetal weight, and growth in different trimesters. Since fetal growth is very rapid, parameters change significantly with gestational age and must be evaluated against normal tables or graphs. The prenatal measurement of fetal parameters vary among different populations, depending upon their racial demographic characteristics. Biometric curves for one population may overestimate or underestimate the fetal age when used for another population with different demographic characteristics. Unfortunately, the obstetrical tables used in our country are produced from the data collected in the population of developed countries which may...