Antiphospholipid antibodies in pre‐eclamptic women: Relation to growth retardation and neonatal outcome

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Abstract
The significance of antiphospholipid antibodies in pre-eclamptic women has not been thoroughly elucidated. The purpose of this study was to determine the proportion of pre-eclamptic women who were antiphospholipid antibody positive, and to elucidate the significance of these antibodies regarding growth retardation and neonatal outcome. Positive levels of anticephalin antibodies, which are antiphospholipid antibodies, were detected in 7 (19%) out of 37 pre-eclamptic women, as compared with none of 40 in a control group of normotensive women at similar stage of pregnancy (p = 0.004). The birthweight percentiles of the neonates of anticephalin antibody positive women were significantly lower than those of the neonates of anticephalin antibody negative women (p = 0.018). Four of 7 infants of anticephalin antibody positive women were growth retarded (less than 2.5th percentile). This was a significantly larger proportion than that for anticephalin antibody negative women (3/30) (p = 0.004). The 95% confidence interval for the difference between the two proportions was 0.10 to 0.85. Two of the 7 neonates of anticephalin antibody positive women died during the neonatal period, compared with none of the 30 neonates of anticephalin antibody negative women (p = 0.003). Thus, our study suggests that positive levels of anticephalin antibodies in pre-eclamptic women increase the risk for growth retardation and neonatal death.

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