Taiwanese Journal of Obstetrics and Gynecology
Volume 44, Issue 2 , Pages 148-152, June 2005

Can First-Trimester Maternal Serum Level Of Pregnancy-associated Plasma Protein-A Predict Subsequent Fetal Growth Restriction?

  • Su-Chee Chen

      Affiliations

    • Department of Obstetrics and Gynecology, Cathay General Hospital, Taipei, Hsinchu, Taiwan
    • ,
  • Fa-Kung Lee

      Affiliations

    • Department of Obstetrics and Gynecology, Cathay General Hospital Hsinchu Branch, Hsinchu, Taiwan

Department of Prenatal Diagnosis Center, Cathay General Hospital, Taipei, Hsinchu, Taiwan

Received 11 November 2004; received in revised form 18 November 2004; accepted 18 November 2004.

Article Outline

Summary 

Objective

To evaluate whether the maternal serum level of pregnancy-associated plasma protein-A (PAPP-A) in the first trimester can predict pregnancy complicated by low birth weight (LBW) and fetal growth restriction (FGR).

Materials and Methods

This retrospective analysis enrolled 3,089 women with singleton pregnancy who underwent screening for Down syndrome in the first trimester of pregnancy and who delivered at Cathay General Hospital. They were divided into five groups according to the birth weight of their infants: three FGR groups of birth weight less than the 10th, 5th, and 3rd centiles, a LBW group of birth weight less than 2,500 g, and a control group of all other women.

Results

The mean multiples of median (MoM) values of PAPP-A were significantly lower in the LBW group (0.98) and the three FGR groups (< 10th centile, 1.03; < 5th centile, 0.96; and < 3rd centile, 0.99) than in the control group (1.15). Women with PAPP-A less than 0.3 MoM, 0.5 MoM or in the 5th centile (0.32 MoM) also had a significantly higher relative risk of pregnancy complicated by LBW and FGR, but the sensitivity of detection was low. The highest sensitivity using a cut-off at 0.5 MoM was 22.5%.

Conclusion

Our study demonstrated that a low maternal serum PAPP-A level in the first trimester is associated with pregnancy complicated by LBW and FGR, but the sensitivity was low. As a single marker, PAPP-A is not sufficient to predict LBW and FGR.

Key Words:  fetal growth restriction , low birth weight , pregnancy-associated plasma protein-A

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PII: S1028-4559(09)60127-3

doi:10.1016/S1028-4559(09)60127-3

Taiwanese Journal of Obstetrics and Gynecology
Volume 44, Issue 2 , Pages 148-152, June 2005

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