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Related Experiment Videos

The definition of pre-eclampsia

I J Perry1, D G Beevers

  • 1Department of Public Health, Royal Free Hospital School of Medicine, London, UK.

British Journal of Obstetrics and Gynaecology
|July 1, 1994
PubMed
Summary
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The Redman and Jefferies criteria effectively distinguish nonproteinuric pre-eclampsia from gestational hypertension, identifying women with poorer outcomes. This revised definition aids in differentiating pre-eclampsia from chronic hypertension.

Area of Science:

  • Obstetrics and Gynecology
  • Maternal-Fetal Medicine
  • Hypertensive Disorders of Pregnancy

Background:

  • Pre-eclampsia definitions vary, with the Redman and Jefferies criteria focusing on blood pressure without requiring proteinuria.
  • Distinguishing nonproteinuric pre-eclampsia from other forms of gestational hypertension, like chronic essential hypertension, is clinically important.

Purpose of the Study:

  • To evaluate if Redman and Jefferies' blood pressure criteria can identify women with pre-eclampsia characteristics among those with gestational hypertension.
  • To assess the agreement between the Redman and Jefferies classification and the ISSHP criteria.

Main Methods:

  • A prospective study was conducted at an obstetric unit in Birmingham, UK.
  • The study included 692 healthy nulliparous women and 11 with pre-existing chronic hypertension.

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  • Maternal characteristics, obstetric outcomes, and classification agreement were analyzed.

    • Main Results:

    • Of 55 women with gestational hypertension (ISSHP criteria), 33 met Redman and Jefferies' criteria and showed features of nonproteinuric pre-eclampsia.
    • These 33 women had poorer obstetric outcomes compared to the 22 with chronic hypertension.
    • The Redman and Jefferies criteria correctly identified 99.5% of normal cases and 92% of proteinuric pre-eclampsia cases.

    Conclusions:

    • The Redman and Jefferies blood pressure criteria effectively identify women with features of pre-eclampsia, including poor outcomes.
    • These criteria facilitate the distinction between nonproteinuric pre-eclampsia and other causes of gestational hypertension.