Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/64662
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Type: Journal article
Title: Antithrombotic therapy for improving maternal or infant health outcomes in women considered at risk of placental dysfunction
Author: Dodd, J.
McLeod, A.
Windrim, R.
Kingdom, J.
Citation: The Cochrane Database of Systematic Reviews, 2010; 2010(6):1-28
Publisher: Update Software Ltd
Issue Date: 2010
ISSN: 1469-493X
1469-493X
Statement of
Responsibility: 
Jodie M Dodd, Anne McLeod, Rory C Windrim and John Kingdom
Abstract: Background Pregnancy complications such as pre-eclampsia and eclampsia, intrauterine growth restriction and placental abruption are thought to have a common origin related to abnormalities in the development and function of the placenta. Objectives To compare, using the best available evidence, the benefits and harms of antenatal antithrombotic therapy to improve maternal or infant health outcomes in women considered at risk of placental dysfunction, when compared with other treatments, placebo or no treatment. Search strategy We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (March 2010). Selection criteria Randomised controlled trials comparing antenatal antithrombotic therapy (either alone or in combination with other agents) with placebo or no treatment, or any other treatment in the antenatal period to improve maternal or infant health outcomes in women considered at risk of placental dysfunction. Data collection and analysis Two review authors evaluated trials under consideration for appropriateness for inclusion and methodological quality without consideration of their results according to the prestated eligibility criteria. We used a fixed-effect meta-analysis for combining study data if the trials were judged to be sufficiently similar. We investigated heterogeneity by calculating I² statistic, and if this indicated a high level of heterogeneity among the trials included we used a random-effects model. Main results Our search strategy identified 14 reports of 10 studies for consideration, of which five met the inclusion criteria, involving 484 women. Four studies compared heparin (alone or in combination with dipyridamole) with no treatment; and one compared trapidil (triazolopyrimidine). While there were no statistically significant differences identified for the primary outcomes following heparin treatment, it was associated with a reduction in the risk of pre-eclampsia, eclampsia, and infant birthweight less than the 10th centile for gestational age. Authors' conclusions The review identified no significant differences for the primary outcomes perinatal mortality, preterm birth less than 34 weeks' gestation, and childhood neurodevelopmental handicap, although the number of studies and participants was small. While treatment with heparin appears promising with a reduction in pre-eclampsia, eclampsia, and infant birthweight less than the 10th centile for gestational age, the number of studies and participants included was small, and to date important information about serious adverse infant and long-term childhood outcomes is unavailable. Further research is required.
Keywords: Humans; Eclampsia; Pre-Eclampsia; Placenta Diseases; Thrombosis; Trapidil; Dipyridamole; Heparin; Fibrinolytic Agents; Treatment Outcome; Pregnancy; Infant; Infant, Newborn; Infant, Low Birth Weight; Female; Randomized Controlled Trials as Topic
Rights: Copyright © 2010 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.
RMID: 0020100270
DOI: 10.1002/14651858.CD006780.pub2
Appears in Collections:Obstetrics and Gynaecology publications

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