alexa Normal fetal growth evaluated by longitudinal ultrasound examinations.
Pediatrics

Pediatrics

Pediatrics & Therapeutics

Author(s): Larsen T, Petersen S, Greisen G, Larsen JF

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Abstract Fetal weight estimation was evaluated using the equations of Warsof, Shepard and Hadlock in 192 patients, less than 3 days before delivery. Warsof's and Hadlock's equations resulted in significantly better weight estimates compared to Shepard's equation. No systematic error was found below 2500 g by use of Warsof's equation, whereas Shepard's and Hadlocks's equations resulted in significant over-estimation in the low weight group. In a study of 5 fetuses, of 27-38 weeks gestational age, the intra-observer variation was calculated to 4.6\%, whereas the coefficient of variation among observer means was 2.9\%. The mixed intra- and inter-observer coefficient of variation was 6.5\%. Thirty-five low-risk, uncomplicated pregnancies with reliable last menstrual dates were investigated longitudinally with ultrasound measurements of fetal weight. Population growth curves of fetal weight, fetal femur length, abdominal circumference and biparietal diameter were constructed by weighted polynomial regression. After 27 weeks of gestational age the weight growth curve showed only insignificant non-linearity. Compared to a Danish growth curve based on birth weights, significant higher mean weight was found, especially before 31 weeks of gestational age. The 10th and 90th percentiles for the individual percentage deviation change was +/- 4.4\% per 28 days.
This article was published in Early Hum Dev and referenced in Pediatrics & Therapeutics

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