Obstetrical history of women with cerebral vein thrombosis: outcome of the pregnancies before and after the thrombotic event.

Cerebral vein thrombosis (CVT) is a rare disease usually affecting young people, especially women, with a high prevalence of thrombophilic defects. It is known that thrombophilia is associated with pregnancy complications; therefore, a high rate of complications could be expected in women with the previous CVT who become pregnant. This study examined the whole obstetric history of women who suffered from CVT to evaluate the incidence of pregnancy complications during their entire lifespan. We prospectively followed consecutive patients with CVT, limiting the analysis to females and their obstetrical history. We studied 123 pregnancies in 99 consecutive women who had a CVT; 71 women had 91 pregnancies before the CVT; 19 women had 23 pregnancies after the CVT; and nine women had a CVT related to pregnancy. All women with CVT before pregnancy were treated with LMWH at prophylactic dosage during pregnancy. No recurrent CVT, venous thromboembolic events, or death was recorded during the observed pregnancies. Ten miscarriages were recorded (rate 8.1%), with a rate similar to that expected in the general population. We confirm the favorable outcome of pregnancies in women who suffered from CVT during their entire lifespan, whether they have occurred before and after or in relation to CVT.