Fetal biometry and fetal weight estimation: JSUM standardization

Blood pressure measurements within the JNC7 pre-hypertensive range after 32 weeks of gestation are a risk factor for decreased fetal growth

“…1 The deviation from the standard birth weight was calculated using the formula derived from normal values for the Japanese population. 6 Statistical analyses were performed using the unpaired t-test, Mann-Whitney test, and w 2 -test, a multivariate analysis. P-values o0.05 were considered significant.…”

Ultrasound diagnosis and management of intra-uterine growth restriction

“…Therefore, IUGR may not be always result in LFD in clinical terms. In utero fetal growth should be assessed by the standard of an ideal growth standard, not by the above mentioned birth weight standards [5,6]. To evaluate in utero fetal growth and to detect growth abnormality at an early stage of pregnancy, the EFW standard value, which indicates an ideal growth in utero, must be applied to evaluate EFW.…”

“…The prospective studies proved that these formulae showed high accuracy in estimating IUGR fetus whether developing symmetrically or not. The details of fetal measurement methods and EFW formulas have been previously described [5][6][7]17]. …”

“…y ¼ f (x) (y ¼ measurement values such as BPD, EFW and so on, and X ¼ gestational age). Usually at least three measurements were taken for assessment of fetal growth and calculating EFW in clinical practice [5][6][7]17]. BPD, FL (femur length) and abdominal diameter such as APTD (antero-posterior diameter) 6 TTD (transverse trunk diameter) or AC (abdominal circumference) are used.…”

“…Therefore, the standardization of ultrasound measurement, fetal biometry and fetal weight estimation are clinically important issues. In this paper, we will introduce an IUGR diagnosis and management based on the standard ultrasound measurement in our country, which has been previously reported [5][6][7].…”