[Subsequent pregnancy outcomes after first pregnancy with severe preeclampsia and delivery before 34 weeks of gestation]

Objectives: Women who had severe preeclampsia are at high risk of gestational vascular complications (preeclampsia, gestational hypertension, fetal death, small for gestational age, placenta abruptio) in subsequent pregnancies. The aim of this study was to describe outcomes of subsequent pregnancy after severe preeclampsia with delivery before 34 weeks of gestation during the first pregnancy.

Patients and methods: One hundred and thirty-four primiparous women delivered before 34 weeks of gestation resulting in severe preeclampsia between January 2002 and December 2009. The data of the index pregnancy were identified from the medical record of our maternity, those of the subsequent pregnancy from paper or computerized medical records of the hospitals where deliveries took place. Our study ended on December 31 2011 for a decrease of at least 2 years after the index pregnancy.

Results: Of the 75 subsequent pregnancies, 59 have been studied. Twenty patients (34%) had gestational vascular complications, in type of gestational hypertension alone (10%), preeclampsia (65%), isolated small for gestational age (20%) or fetal death (5%). Thirty-nine patients (66%) showed no recurrence of gestational vascular complications but only 33 patients (56%) had a pregnancy of course totally physiological. The only risk factor for recurrent gestational vascular complications in subsequent pregnancy was a long time interval between two pregnancies, with an increased risk in case of delay beyond 26 months.

Conclusion: Women with a history of severe preeclampsia with delivery before 34 weeks of gestation during first pregnancy are at increased risk for gestational vascular complications during the next pregnancy. A close obstetrical monitoring is recommended during a subsequent pregnancy.