File talk:Fetal crown-rump length graph.jpg

Mean organ weights of an Australian population of fetuses and infants

J Paediatr Child Health. 1990 Apr;26(2):101-3.

Cussen L, Scurry J, Mitropoulos G, McTigue C, Gross J. Source Department of Paediatrics, Monash Medical Centre, Clayton, Victoria, Australia.

Abstract

Charts of organ weights for an Australian population of fetuses and infants are presented. The organ-weight charts were compiled from 1337 stillbirths and liveborn babies whose gestational age ranged from 20 to 43 weeks, and who lived less than 72 h. Macerated stillbirths, multiple births and malformed organs were excluded. Pathological conditions aside from malformations were not excluded, leading to higher standard deviations compared with currently used charts. The organ weights are presented in two-week increments from 20 to 43 weeks' gestation as means, with standard deviations.

PMID: 2361065

Reference values for second trimester fetal and neonatal organ weights and measurements

Pediatr Dev Pathol. 2003 Mar-Apr;6(2):160-7. Epub 2003 Jan 29.

Hansen K, Sung CJ, Huang C, Pinar H, Singer DB, Oyer CE. Source Department of Pathology, Women and Infants Hospital of Rhode Island and Brown Medical School, 101 Dudley Street, Providence, RI 02905, USA.

Abstract

To establish accurate reference ranges for the entire second trimester, we documented organ weights, body weight, and linear measurements for 597 fetuses and neonates with gestational ages ranging from 12 to 26 wk. We determined the mean and standard deviation for weights and measurements at each week of gestation using the StatView trade mark SE + Graphics statistical program. The analyses revealed a linear correlation between the gestational age and, respectively, the toe-heel length, crown-rump length, and crown-heel length. Body and organ weights increase at varying rates throughout the second trimester. The data correlate well with weights and measurements previously published for the latter half of the second trimester, and extend these reference ranges to encompass the entire second trimester.

PMID: 12548377