Charts of Thai Fetal Biometries: 4. Abdominal
Circumference
PRASERT SUNSANEEVITHAYAKUL, M.D.*, DITTAKARN BORIBOONHIRUNSARN, M.D., M.P.H.*,
TEERA SIWADUNE, M.D.**,
VITTAYA TITAPANT, M.D.*,
CHANCHAI V ANTANASIRI, M.D.*
Affiliation : * Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok
10700,
** Division of Obstetrics, Chon Buri Hospital, Chon Buri 20000, Thailand.
AbstractA cross-sectional study was conducted in order to construct a new reference chart for
Thai fetal abdominal circumference (AC). A total of 621 normal pregnant women between 12-41
weeks of gestation and their fetuses were recruited. Measurements were made once at a
randomly assigned gestational age specifically for the purpose of this study only. Due to unfa-
vorable fetal position in some cases, AC data were available in 615 measurements. Linear
regression models were fitted separately to estimate the mean and standard deviation as func-
tions of gestational age. Reference centiles were constructed from both equations, assuming the
data were normally distributed. A new reference centiles for AC is presented and compared with
previously published data. Our derived centiles were lower than those from Western studies
which may partly be due to racial differences. This emphasizes the need to develop fetal biome-
tries charts specifically for each region.
Keywords : Fetal Biometries, Abdominal Circumference, Reference Centiles
All Articles
Download
