title: The impact of close surveillance on pregnancy outcome among women with a prior history of antepartum complications attributed to thrombosis: a cohort study.
abstract: BACKGROUND
  There is limited evidence, so far, as to the optimal management of women with a prior obstetric history of antepartum complications attributed to thrombosis. We aimed to investigate the contribution of close antepartum surveillance on pregnancy outcome among women with prior antepartum complications attributed to thrombosis.
  
  
  METHODS
  The study was conducted on all women who were delivered, conceived and delivered again between January 2000 and January 2006 at a university teaching hospital. Women included were managed in previous pregnancy at a low risk setting and had unpredicted antepartum complications occurring at a gestational age of 23 weeks or more. Antepartum complications considered were intrauterine fetal death, neonates who were small for gestational age, severe pre-eclampsia and placental abruption. All women were tested for the presence of thrombophilia after delivery. In the following pregnancy, only women found to have any thrombophilia (thrombophilic group) were treated with enoxaparin. Both the thrombophilic group and the non-thrombophilic group (tested negatively for thrombophilia) were managed and observed closely at our high-risk pregnancy clinic.
  
  
  RESULTS
  Ninety-seven women, who conceived at least once after the diagnosis of the relevant antepartum complications, were included in this study. Forty-nine had any thrombophilia and 48 tested negatively. Composite antepartum complications (all antepartum complications considered) were reduced significantly after close antepartum surveillance in both groups. Mean birth weight and mean gestational age improved significantly and were comparable between the groups.
  
  
  CONCLUSIONS
  Close antepartum surveillance may contribute to improvement in the perinatal outcomes of women with prior antepartum complications attributed to thrombosis.
authors.affiliation: Department of Obstetrics and Gynecology, HaEmek Medical Center, Afula, Israel. salim_ra@clalit.org.il
authors.forename: Raed
authors.initials: R
authors.lastname: Salim
authors.forename: Tali
authors.initials: T
authors.lastname: Czarnowicki
authors.forename: Zohar
authors.initials: Z
authors.lastname: Nachum
authors.forename: Eliezer
authors.initials: E
authors.lastname: Shalev
mesh_terms: D015331:Cohort Studies; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007236:Infant, Small for Gestational Age; D007744:Obstetric Labor Complications / Q000453:epidemiology; D011159:Population Surveillance / Q000379:methods*; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular / Q000453:epidemiology* / Q000517:prevention & control; D011256:Pregnancy Outcome / Q000453:epidemiology*; D017584:Reproductive History; D013927:Thrombosis / Q000150:complications* / Q000453:epidemiology