[Correlation of birthweight and the prediction of fetal and neonatal status].
OBJECTIVE
Quantitative evaluation of direct neonatal risk for small-for-gestational-age (SGA) fetuses.


METHODS
Retrospective analysis of perinatal data base.


METHODS
Six thousand one hundred twenty four pregnant women undergoing labor at term were enrolled to a study. Standard deviation scores (Z) of birthweight adjusted to the age were calculated. Receiver-operator characteristic were constructed for Z scores in prediction of obstetrical outcome.


RESULTS
Birthweight Z score < -1.2 was statistically related to higher occurrence of neonatal depression. Incidence of significant neonatal arterial acidemia (pH < 7.10) was dependent on birthweight Z score in wide range, even among appropriate-for-gestational-age (AGA) ones. Adjusted birthweight had the high predictive value for extremely deep neonatal disturbances.


CONCLUSIONS
Classic criterion of SGA fetal weight (10%), as an index of increased perinatal risk, is statistically and biologically proper. Some cases of intrauterine growth restriction, related to insufficient feto-maternal exchange, probably does not lead to SGA birthweight presence. Adjusted birthweight is clinically usefull for limited number of patients.
Malewski
Zbyszko
Z
Kliniki Perinatologii AM im. Karola Marcinkowskiego w Poznaniu.
D000328:Adult; D001724:Birth Weight; D005260:Female; D005317:Fetal Growth Retardation / Q000209:etiology; D006801:Humans; D015994:Incidence; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000209:etiology; D007236:Infant, Small for Gestational Age; D008431:Maternal-Fetal Exchange; D016017:Odds Ratio; D011044:Poland / Q000453:epidemiology; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology; D012372:ROC Curve; D012015:Reference Standards; D012307:Risk Factors
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