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Second trimester placental location as a predictor of an adverse pregnancy outcome

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Abstract

Objective:

To determine if the second trimester placental location is associated with perinatal outcomes.

Materials and methods:

Observational study of placental location and the subsequent risk of an adverse pregnancy outcome. Placental location was divided into three categories, low, high lateral and high fundal.

Results:

There were 3336 pregnancies analyzed in this study. Low implantation sites had a greater risk of preterm labor (odds ratio (OR) 1.70, 95% confidence interval (CI) 1.38 to 2.90, P<0.001), preterm delivery (OR 1.86, 95% CI 1.36 to 2.54, P<0.001), fewer fetuses with macrosomia (OR 0.56, 95% CI 0.38 to 0.83, P=0.010) and reduced risk of postpartum hemorrhage (OR 0.56, 95% CI 0.46 to 0.95, P=0.026). High lateral implantations had a greater risk of low 1-min (OR 1.80, 95% CI 1.11 to 2.93, P=0.017) and 5-min (OR 3.49, 95% CI 1.46 to 8.36, P=0.005) Apgar scores.

Conclusions:

Low placental implantation was associated with an increased risk of preterm labor, preterm delivery and a reduced risk of postpartum hemorrhage, and of a macrosomic fetus. High lateral implantation was associated with low Apgar scores.

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Authors and Affiliations

  1. Department of Obstetrics and Gynecology, University of Western Australia, Perth, Australia

    E F Magann, D A Doherty & J P Newnham

  2. Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson, MS, USA

    K Turner, G S Lanneau Jr & J C Morrison

Authors
  1. E F Magann
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  2. D A Doherty
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  3. K Turner
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  4. G S Lanneau Jr
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  5. J C Morrison
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  6. J P Newnham
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Corresponding author

Correspondence to J C Morrison.

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Magann, E., Doherty, D., Turner, K. et al. Second trimester placental location as a predictor of an adverse pregnancy outcome. J Perinatol 27, 9–14 (2007). https://doi.org/10.1038/sj.jp.7211621

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  • DOI: https://doi.org/10.1038/sj.jp.7211621

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