PERSPECTIVE
Estimated fetal weights versus birth weights
Estimated fetal weights versus birth weights: should the reference intrauterine growth curves based on birth weights be retired?
Correspondence to:
Correspondence to:
R A Ehrenkranz
Yale University School of Medicine, 333 Cedar Street, PO Box 208064, New Haven, CT 06520-8064; richard.ehrenkranz@yale.edu
Perspective on the paper by Cooke (see page F189)
Abbreviations: AGA, appropriate for gestational age; EFW, estimated fetal weight; FGR, fetal growth restriction; NICU, neonatal intensive care unit; LGA, large for gestational age; SGA, small for gestational age
| The first 150 words of the full text of this article appear below. |
Presentation of intrauterine or fetal growth in the form of centile curves based on birth weight was first reported by Lubchenco and her co-workers in 1963.1 In that publication, data on the birth weights of 5635 live born Caucasian infants 24 to 42 weeks of gestation were analyzed. The data were presented in figures and tables that displayed smoothed 10th, 25th, 50th, 75th and 90th percentiles for males and females together and separately. The authors acknowledged several limitations to their analysis, including: "The sample has an undeterminable bias because premature birth itself is probably related to unphysiological states of variable duration in either mother or fetus. Since the weight of fetuses who remain in utero cannot be measured, the curves presented herein are submitted with these reservations as estimates of intrauterine growth." Nonetheless, the authors felt that the curves would be useful at birth,
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- Conventional birth weight standards obscure fetal growth restriction in preterm infants
- Richard W I Cooke
Arch. Dis. Child. Fetal Neonatal Ed. 2007 92: F189-F192.[Abstract] [Full Text] [PDF]
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