Donald School Journal of Ultrasound in Obstetrics and Gynecology

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VOLUME 7 , ISSUE 2 ( April-June, 2013 ) > List of Articles

REVIEW ARTICLE

Doppler Sonography in Obstetrics

A Kubilay Ertan, H Alper Taniverdi

Keywords : Doppler sonography,Flow velocity waveforms,High-risk pregnancy,Intrauterine growth restriction,Perinatal outcome

Citation Information : Ertan AK, Taniverdi HA. Doppler Sonography in Obstetrics. Donald School J Ultrasound Obstet Gynecol 2013; 7 (2):128-148.

DOI: 10.5005/jp-journals-10009-1278

License: CC BY-NC 4.0

Published Online: 00-06-2013

Copyright Statement:  Copyright © 2013; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

How to cite this article

Ertan AK, Taniverdi HA. Doppler Sonography in Obstetrics. Donald School J Ultrasound Obstet Gynecol 2013;7(2):128-148.


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  1. Comprehensive assessment of fetal wellbeing: which Doppler tests should be performed? Curr Opin Obstet Gynecol 2003;15(2):147-57.
  2. Non-invasive measurement of human fetal circulation using ultrasound: A new method. Br Med J 1977;2(6100):1450-51.
  3. New Doppler technique for assessing uteroplacental blood flow. Lancet 1983;1(8326 Pt 1):675-77.
  4. Ultrasonic measurement of human fetal blood flow. J Biomed Eng 1982;4(1):28-36.
  5. Doppler ultrasound screening as part of routine antenatal scanning: Prediction of pre-eclampsia and intrauterine growth retardation. Br J Obstet Gynaecol 1993;100(11):989-94.
  6. Predictive value of uterine artery velocimetry at midgestation in low-and high-risk populations: A new perspective. Fetal Diagn Ther 1999; 14(4):201-05.
  7. Qualitative assessment of uteroplacental blood flow: early screening test for high-risk pregnancies. Obstet Gynecol 1986;68(5):649-53.
  8. Doppler ultrasound of the uterine arteries: the importance of bilateral notching in the prediction of pre-eclampsia, placental abruption or delivery of a small-for-gestational-age baby. Ultrasound Obstet Gynecol 1996;7(3):182-88.
  9. Transvaginal uterine and umbilical artery Doppler examination of 12-16 weeks and the subsequent development of pre-eclampsia and intrauterine growth retardation. Ultrasound Obstet Gynecol 1997;9(2):94-100.
  10. [Potential clinical application of Doppler ultrasound in obstetrics]. Zentralbl Gynakol 1989;111(19):1277-84.
  11. Prediction of pre-eclampsia, low birthweight for gestation and prematurity by uterine artery blood flow velocity waveforms analysis in low-risk nulliparous women. Br J Obstet Gynaecol 1998;105(4):422-29.
  12. Uteroplacental blood flow velocity-time waveforms in normal and complicated pregnancy. Br J Obstet Gynaecol 1985;92(1):39-45.
  13. D Doppler assessment of the uterine and uteroplacental circulation in the second trimester in pregnancies at high-risk for pre-eclampsia and/or intrauterine growth retardation: Comparison and correlation between different Doppler parameters. Ultrasound Obstet Gynecol 1997;9(5):330-38.
  14. Safety of ultrasonography in pregnancy: WHO systematic review of the literature and meta-analysis. Ultrasound Obstet Gynecol 2009;33(5):599-608.
  15. Ultrasound in obstetrics: A review of safety. Eur J Obstet Gynecol Reprod Biol 2002;101(1):15-18.
  16. Is diagnostic ultrasound safe? Current international consensus on the thermal mechanism. Med J Aust 1994;160(1):33-37.
  17. The safety of obstetrical ultrasound: A review. Prenat Diagn 2009;29(13):1204-12.
  18. Effects of repeated prenatal ultrasound examinations on childhood outcome up to 8 years of age: Follow-up of a randomised controlled trial. Lancet 2004;364(9450):2038-44.
  19. Are ‘notched’ uterine arterial waveforms of prognostic value for hypertensive and growth disorders of pregnancy? Fetal Diagn Ther 1995;10(2):111-18.
  20. Physiology of Doppler blood flow in maternal blood vessels in pregnancy. Gynakologe 1992;25(5):284-91.
  21. Doppler studies of arterial blood flow in the uterus during labor. Z Geburtshilfe Perinatol 1984;188(2):64-67.
  22. Continuous wave Doppler flow velocity waveforms from the umbilical artery in normal pregnancy. J Perinat Med 1990;18(1):51-57.
  23. Fetomaternal Doppler sonography nomograms. Clin Exp Obstet Gynecol 2003;30(4):211-17.
  24. Prediction of morbidity in small and normally grown fetuses by fetal heart rate variability, biophysical profile score and umbilical artery Doppler studies. Br J Obstet Gynaecol 1993;100(8):742-45.
  25. Timing the delivery of the preterm severely growth-restricted fetus: Venous Doppler, cardiotocography or the biophysical profile? Ultrasound Obstet Gynecol 2002;19(2):118-21.
  26. Fetal blood velocity waveforms in normal pregnancy. Br J Obstet Gynaecol 1980;87(9):780-85.
  27. Doppler ultrasound waveform indices: A/B ratio, pulsatility index and Pourcelot ratio. Br J Obstet Gynaecol 1988;95(6):581-88.
  28. [Normal values for relative Doppler indices. A/B ratio, resistance index and pulsatility index of the uterine artery and umbilical artery in normal pregnancy. A longitudinal study. Geburtshilfe Frauenheilkd 1995;55(11):616-22.
  29. Umbilical velocity wave ratios in human pregnancy. Am J Obstet Gynecol 1984; 148(7):985-90.
  30. Fetal umbilical artery flow velocity waveforms and placental resistance: Clinical significance. Br J Obstet Gynaecol 1985;92(1):23-30.
  31. Components of variability of umbilical arterial Doppler velocimetry—a prospective analysis. Am J Obstet Gynecol 1989;160(6): 1406-09.
  32. Perinatologische Auffälligkeiten Bei Hochpathologischen Doppler-Flow-Befunden (Chapter 12). In: Schmidt W, Kurjak A (Eds). Farbdopplersonographie In Gynäkologie Und Geburtshilfe. (1st ed). Stuttgart: Thieme Verlag 2000:177-87.
  33. Umbilical artery velocity waveforms and intrauterine growth retardation. Am J Obstet Gynecol 1985;151(4):502-05.
  34. The significance of increasing umbilical artery systolic-diastolic ratios in thirdtrimester pregnancy. Obstet Gynecol 1992;80(4):684-87.
  35. The significance of absent end-diastolic velocity in umbilical artery velocity waveforms. Am J Obstet Gynecol 1987;156(5):1213-18.
  36. Fetal umbilical artery velocity waveforms and subsequent neonatal outcome. Br J Obstet Gynaecol. 1991;98(4):378-84.
  37. Umbilical and uteroplacental blood flow velocity waveforms in pregnancies with fetal growth retardation. Eur J Obstet Gynecol Reprod Biol 1988;27(3): 187-96.
  38. Umbilical artery doppler screening for detection of the small fetus in need of antepartum surveillance. Am J Obstet Gynecol 2000;182(1 Pt 1):154-58.
  39. Umbilical artery doppler studies in small for gestational age babies reflect disease severity. BJOG 2000;107(7):916-25.
  40. Comparison of perinatal outcome in fetuses with reverse or absent end-diastolic flow in the umbilical artery/fetal descending aorta. J Perinat Med 2003;31(4):307-12.
  41. The sequence of changes in Doppler and biophysical parameters as severe fetal growth restriction worsens. Ultrasound Obstet Gynecol 2001; 18(6):571-77.
  42. Chromosomal abnormalities in fetuses with absent end-diastolic velocity in umbilical artery: Analysis of risk factors for an abnormal karyotype. Am J Obstet Gynecol 1994;171(3):827-31.
  43. Perinatal events of cases with severely abnormal Doppler flow measurements. J Perinat Med 2003;In Press.
  44. Absent end-diastolic velocity in umbilical artery: Risk of neonatal morbidity and brain damage. Am J Obstet Gynecol 1994;170(3):796-801.
  45. Doppler ultrasonography in high-risk pregnancies: Systematic review with meta-analysis. Am J Obstet Gynecol 1995;172(5):1379-87.
  46. Doppler ultrasound for fetal assessment in high-risk pregnancies. Cochrane Database Syst Rev 2000;(2):CD000073.
  47. Antenatal prediction of intraventricular hemorrhage in fetal growth restriction: what is the role of Doppler? Ultrasound Obstet Gynecol 2002;19(4):334-39.
  48. Intrauterine blood flow and long-term intellectual, neurologic, and social development. Obstet Gynecol 2001;97(3):449-53.
  49. Perinatal events and neuromotoric development of children with zero flow in the fetal vessels during the last trimester. In: Cosmi E, Di Renzo GC (Eds). 2nd World Congress of Perinatal Medicine (1st ed). Milano: Monduzzi Editore 1993:1049-52.
  50. Neuromotoric development of children after AED-flow during pregnancy. In: Kurjak A, Latin V, Rippmann E (Eds). Advances on the pathophysiology of pregnancy (1st ed). Milano: CIC Edizioni Internazionali 1995:55-62.
  51. Intrapartum umbilical artery doppler velocimetry as a predictor of adverse perinatal outcome: A systematic review. Br J Obstet Gynaecol 1999;106(8): 783-92.
  52. The validity of screening for small-for-gestational-age and low-weight-forlength infants by Doppler ultrasound. Br J Obstet Gynaecol 1989;96(5):557-61.
  53. Antenatal screening for intrauterine growth retardation with umbilical artery Doppler ultrasonography. BMJ 1989;298(6674):631-35.
  54. Umbilical artery Doppler velocimetry in unselected and low risk pregnancies: A review of randomised controlled trials. Br J Obstet Gynaecol 1997;104(4):425-30.
  55. Umbilical artery flow velocity waveforms and twin pregnancy outcome. Obstet Gynecol 1988;72(6):894-97.
  56. Is it time to reassess the risk for the growth-retarded fetus with normal doppler velocimetry of the umbilical artery? Am J Obstet Gynecol 1994;170(6):1734-41.
  57. Discordant twins—a prospective study of the diagnostic value of real-time ultrasonography combined with umbilical artery velocimetry. Am J Obstet Gynecol 1989;161(3):757-60.
  58. Doppler velocimetry determined redistribution of fetal blood flow: Correlation with growth restriction in diamniotic monochorionic and dizygotic twins. Am J Obstet Gynecol 1998;178(6):1359-67.
  59. Assessment of fetal compromise by Doppler ultrasound investigation of the fetal circulation. Arterial, intracardiac and venous blood flow velocity studies. Circulation 1995;91(1):129-38.
  60. Longitudinal changes in the ductus venosus, cerebral transverse sinus and cardiotocogram in fetal growth restriction. Ultrasound Obstet Gynecol 2000;16(1):19-24.
  61. Integrated testing and management in fetal growth restriction. Semin Perinatol 2008; 32(3):194-200.
  62. Fetal central blood circulation in the third trimester of normal pregnancy—a longitudinal study. I. Aortic and umbilical blood flow. Early Hum Dev 1986; 13(2):137-50.
  63. Reference values for the pulsatility index and the resistance index of blood flow curves of the umbilical artery and fetal aorta in the 3rd trimester. Ultraschall Med 1989;10(4):226-29.
  64. Utero-placental blood velocity resistance index and umbilical venous pO2, pCO2, pH, lactate and erythroblast count in growth-retarded fetuses. Fetal Ther 1986;1(4):176-79.
  65. Blood velocity waveforms of the fetal aorta in normal and hypertensive pregnancies. Obstet Gynecol 1986;67(6):856-60.
  66. Fetal blood flow in pregnancies complicated by intrauterine growth retardation. Obstet Gynecol 1987;69(6):895-902.
  67. Doppler studies in the growth retarded fetus and prediction of neonatal necrotising enterocolitis, haemorrhage, and neonatal morbidity. Br Med J (Clin Res Ed). 1987;294(6563):13-16.
  68. Obstetrical characteristics of a loss of end-diastolic velocities in the fetal aorta and/or umbilical artery using Doppler ultrasound. Gynecol Obstet Invest 1988;25(3):173-80.
  69. Blood flow velocity waveforms in the descending fetal aorta: Comparison between normal and growth-retarded pregnancies. Obstet Gynecol 1986;67(6):851-55.
  70. Fetal heart rate (FHR) pathology in labor related to preceeding Doppler sonographic results of the umbilical artery and fetal aorta in appropriate and small for gestational age babies. A Longitudinal Analysis. J Perinat Med 1997;25(5):440-46.
  71. Blood flow in the fetal descending aorta. Semin Perinatol 1987;11(4):322-34.
  72. Abnormal fetal aortic velocity waveform and minor neurological dysfunction at 7 years of age. Ultrasound Obstet Gynecol 1996;8(3):152-59.
  73. Abnormal fetal aortic velocity waveform and intellectual function at 7 years of age. Ultrasound Obstet Gynecol 1996;8(3):160-65.
  74. Doppler Evaluation of the fetus. Clin Obstet Gynecol 2002;45(4):1015-25.
  75. Doppler ultrasound application to fetal medicine (Chapter 12). In: Fleischer A, Manning F, Jeanty P, Romero R (Eds). Sonography in obstetrics and gynecology (Principles and Practice) (6th ed). New York, USA: Mcgraw Hill 2001:247-83.
  76. Doppler assessment of the pulsatility index in the cerebral circulation of the human fetus. Am J Obstet Gynecol 1989;160(3):698-703.
  77. The significance of Doppler blood flow measurement in recognizing placental insufficiency. Arch Gynecol Obstet 1988;244(Suppl):S12-S18.
  78. Simultaneous assessment of blood flow velocity waveforms in uteroplacental vessels, the umbilical artery, the fetal aorta and the fetal common carotid artery. Fetal Ther 1987;2:17-26.
  79. Middle cerebral artery velocimetry: Different clinical relevance depending on umbilical velocimetry. Obstet Gynecol 1997;90(6):953-57.
  80. Reverse end-diastolic flow in the middle cerebral artery: An agonal pattern in the human fetus. Am J Obstet Gynecol 1996;174(5):1645-47.
  81. Middle cerebral artery flow velocity waveforms in fetal hypoxaemia. Br J Obstet Gynaecol 1990;97(9):797-803.
  82. Diagnosis of fetal anemia with Doppler ultrasound in the pregnancy complicated by maternal blood group immunization. Ultrasound Obstet Gynecol 1995;5(6):400-05.
  83. Noninvasive diagnosis by Doppler ultrasonography of fetal anemia due to maternal red-cell alloimmunization. Collaborative group for Doppler assessment of the blood velocity in anemic fetuses. N Engl J Med 2000;342(1):9-14.
  84. Longitudinal measurement of peak systolic velocity in the fetal middle cerebral artery for monitoring pregnancies complicated by red cell alloimmunisation: A prospective multicentre trial with intentionto-treat. BJOG 2002;109(7):746-52.
  85. The usefulness of middle cerebral artery Doppler assessment in the treatment of the fetus at risk for anemia. Am J Obstet Gynecol 2008;198(2):161-64.
  86. Accurate prediction of fetal hemoglobin by Doppler ultrasonography. Obstet Gynecol 2002; 99(4):589-93.
  87. Doppler assessment of the fetal venous system. Semin Perinatol 2001;5(1):21-31.
  88. Color Doppler study of the venous circulation in the fetal brain and hemodynamic study of the cerebral transverse sinus. Ultrasound Obstet Gynecol 1999;13(1):34-42.
  89. Diagnosis of fetal pulmonary hypoplasia by measurement of blood flow velocity waveforms of pulmonary arteries with Doppler ultrasonography. Am J Obstet Gynecol 1999;180(2 Pt 1):441-46.
  90. Assessing the ‘at-risk’ fetus: Doppler ultrasound. Curr Opin Obstet Gynecol 2009;21(2):161-66.
  91. Absence of the ductus venosus: Report of 10 new cases and review of the literature. Ultrasound Obstet Gynecol 2001;18(6):605-09.
  92. The development of abnormal heart rate patterns after absent end-diastolic velocity in umbilical artery: Analysis of risk factors. Am J Obstet Gynecol 1993; 168(1 Pt 1):43-50.
  93. Changes in umbilical arterial and venous blood flow velocity waveforms during late decelerations of the fetal heart rate. Obstet Gynecol 1994;84(6):1038-40.
  94. Umbilical venous pulsations are related to atrial contraction pressure waveforms in fetal lambs. Obstet Gynecol 1997;89:953-56.
  95. Umbilical vein blood flow in growth-restricted fetuses. Ultrasound Obstet Gynecol. 2000;16(5):432-38.
  96. Venous Doppler ultrasonography in the fetus with nonimmune hydrops. Am J Obstet Gynecol 1991;164(1 Pt 1):33-37.
  97. Pulsatile umbilical venous flow and its clinical significance. Br J Obstet Gynaecol 1992;99(12):977-80.
  98. Prenatal diagnosis of congenital fetal arrhythmias by simultaneous pulsed Doppler velocimetry of the fetal abdominal aorta and inferior vena cava. Obstet Gynecol 1990;76(2):200-05.
  99. Inferior vena cava flow velocity waveforms in appropriate and small-for gestational age fetsues. Am J Obstet Gynecol 1992;166:1271-80.
  100. Ultrasonographic velocimetry of the fetal ductus venosus. Lancet 1991; 338(8780):1412-14.
  101. Estimation of the pressure gradient across the fetal ductus venosus based on Doppler velocimetry. Ultrasound Med Biol 1994;20(3): 225-32.
  102. In a different vein: The ductus venosus could yield smuch valuable information. Ultrasound Obstet Gynecol 1997;9(6):369-72.
  103. How repeat measurements affect the mean diameter of the umbilical vein and the ductus venosus. Ultrasound Obstet Gynecol 1998;11(6):419-25.
  104. Ductus venosus agenesis prevents transmission of central venous pulsations to the umbilical vein in fetal sheep. Ultrasound Obstet Gynecol 1998;11(3):190-94.
  105. Ductus venosus blood velocity in myeloproliferative disorders. Ultrasound Obstet Gynecol 2001;18(2):184-85.
  106. The ductus venosus. Semin Perinatol 2001;25(1): 11-20.
  107. The anatomy of the umbilical, portal and hepatic venous systems in the human fetus at 14 to 19 weeks of gestation. Ultrasound Obstet Gynecol 2001; 18(6):598-604.
  108. Role of ductus venosus in distribution of umbilical blood flow in human fetuses during second half of pregnancy. Am J Physiol Heart Circ Physiol 2000;279(3):H1256-63.
  109. Ductus venosus blood flow in chromosomally abnormal fetuses at 11 to 14 weeks of gestation. Semin Perinatol 2001;25(1):32-37.
  110. Arterial and venous doppler velocimetry in the severely growth-restricted fetus and associations with adverse perinatal outcome. Ultrasound Obstet Gynecol 1998;12(1):39-44.
  111. Cardiotocogram compared to Doppler investigation of the fetal circulation in the premature growthretarded fetus: Longitudinal observations. Ultrasound Obstet Gynecol 1997;9(3):152-61.
  112. Fetal venous circulation—an update on hemodynamics. J Perinat Med 2000;28:90-96.
  113. Liver length in the small-for-gestational-age fetus and ductus venosus flow. Am J Obstet Gynecol 2000;182(1 Pt 1):252-53.
  114. Relation of fetal blood gases and data from computer assisted analysis of fetal heart rate patterns. Br J Obstet Gynaecol 1991;98(8):820-23.
  115. Short-term fetal heart rate variation, decelerations and umbilical flow velocity waveforms before labor. Obstet Gynecol 1992;80(4):673-78.
  116. Monitoring of fetuses with intrauterine growth restriction: A longitudinal study. Ultrasound Obstet Gynecol 2001;18(6):564-70.
  117. Venous Doppler velocimetry in the surveillance of severely compromised fetuses. Ultrasound Obstet Gynecol 2002;20(3):233-39.
  118. The GRIT study group. Infant wellbeing at 2 years of age in the Growth Restriction Intervention Trial (GRIT): Multicentred randomised controlled trial. Lancet 2004;364(9433):513-20.
  119. Transvaginal color flow Doppler in the assessment of ovarian and uterine blood flow in infertile women. Fertil Steril 1991;56(5):870-73.
  120. Vaginosonographic Doppler velocimetry in both uterine arteries: Elevated left-right differences and relationship to fetal haemodynamics and outcome. Early Hum Dev 1991;25(3):187-96.
  121. Decreased uterine per-fusion— a cause of infertility. Hum Reprod 1989;3(8):955-59.
  122. Intervillous circulation in all three trimesters of normal pregnancy assessed by color Doppler. J Perinat Med 1997;25(4):373-80.
  123. Longitudinal evaluation of uteroplacental and umbilical blood flow changes in normal early pregnancy. Ultrasound Obstet Gynecol 1996;7(2):114-21.
  124. Changes in uterine blood flow during human pregnancy. Am J Obstet Gynecol 1990;162(1):121-25.
  125. Uteroplacental Doppler flow velocity waveform indices in normal pregnancy: A statistical exercise and the development of appropriate reference values. Am J Perinatol 1992;9(2):94-101.
  126. Quantitative estimation of human uterine artery blood flow and pelvic blood flow redistribution in pregnancy. Obstet Gynecol 1992;80(6): 1000-06.
  127. Uterine and fetal umbilical artery flow velocity waveforms in normal first trimester pregnancies. Br J Obstet Gynaecol 1990; 97(8):716-19.
  128. A longitudinal Doppler ultrasonographic assessment of the alterations in peripheral vascular resistance of uterine arteries and ultrasonographic findings of the involuting uterus during the puerperium. Am J Obstet Gynecol 1993;168 (1 Pt 1):190-98.
  129. The 10th anniversary of obstetric Doppler sonography—development and perspectives. Geburtshilfe Frauenheilkd 1989;49(5):407-15.
  130. Fetal growth retardation and the arteries of the placental bed. Br J Obstet Gynaecol 1977;84(9):656-63.
  131. Blood flow profile in the uterine artery. Correlation with placental morphology and clinico-obstetrical data within the scope of pre-eclampsia. Z Geburtshilfe Neonatol 1995;199(1):8-12.
  132. Uterine and spiral artery flow velocity waveforms in pregnancy-induced hypertension and/or intrauterine growth retardation. Ultrasound Obstet Gynecol 1996;7(2):122-28.
  133. Improved prediction of preeclampsia by two-stage screening of uterine arteries using the early diastolic notch and color Doppler imaging. Obstet Gynecol 1993;82(1):78-83.
  134. Screening for pre-eclampsia and fetal growth restriction by uterine artery Doppler at 11 to 14 weeks of gestation. Ultrasound Obstet Gynecol 2001;18(6):583-86.
  135. Maternal age and gestational age-specific risks for chromosomal defects. Fetal Diagn Ther 1995;10(6):356-67.
  136. Crownrump length in chromosomally abnormal fetuses at 10 to 13 weeks’ gestation. Am J Obstet Gynecol 1995;172(1 Pt 1):32-35.
  137. First trimester growth patterns of aneuploid fetuses. Prenat Diagn 1997;17(2):155-59.
  138. Uterine artery Doppler at 11 to 14 weeks of gestation in chromosomally abnormal fetuses. Ultrasound Obstet Gynecol 2001;18(6):587-89.
  139. Doppler velocimetry of the uteroplacental circulation (Chapter 13). In: Fleischer A, Manning F, Jeanty P, Romero R (Eds). Sonography in obstetrics and gynecology (Principles and practice) (6th ed). New York, USA: Mcgraw Hill 2001:285-313.
  140. An evaluation of the efficacy of Doppler flow velocity waveform analysis as a screening test in pregnancy. Am J Obstet Gynecol 1990;162(2):403-10.
  141. Potential markers of pre-eclampsia—a review. Reprod Biol Endocrinol 2009;7:70.
  142. Use of uterine artery Doppler ultrasonography to predict pre-eclampsia and intrauterine growth restriction: A systematic review and bivariable meta-analysis. CMAJ 2008;178(6):701-11.
  143. CLASP (Collaborative Low-dose Aspirin Study in Pregnancy) Collaborative Group. Lancet 1994;343(8898): 619-29.
  144. Randomised trial of low dose aspirin for the prevention of maternal and fetal complications in high-risk pregnant women. ECPPA (Estudo Colaborativo para Prevenção da Pré-eclampsia com Aspirina) Collaborative Group. Br J Obstet Gynaecol. ECPPA (Estudo Colaborativo para Prevenção da Pré-eclampsia com Aspirina) Collaborative Group. Br J Obstet Gynaecol 1996;103(1):39-47.
  145. Antiplatelet agents for prevention of pre-eclampsia: A meta-analysis of individual patient data. Lancet 2007;369(9575):1791-98.
  146. Antiplatelet agents for preventing pre-eclampsia and its complications. Cochrane Database Syst Rev 2004;(1):CD004659.
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