Risk of recurrent cervical artery dissection during pregnancy, childbirth and puerperium.

BACKGROUND AND PURPOSE: Hormonal and mechanical factors might increase the risk for cervical artery dissection (CAD) during pregnancy and the puerperium. There is uncertainty how to counsel women with a previous CAD regarding the risk of CAD recurrence during pregnancy and the puerperium. METHODS: In an observational study of four stroke centers, all women aged 16-45 years with primary CAD in the previous decade were asked to participate in a standardized assessment on long-term follow-up with a special focus on pregnancies and recurrent CAD. RESULTS: Ninety-two women were identified and 53 of them were included in the analysis (60%). Eleven women declined to participate, 28 were untraceable. The 39 non-participants did not differ from participants regarding key baseline characteristics. Average follow-up time was 72 months. Nine women (17%) had recurrent CAD after a median of 14 days (range 2 days to 117 months). Eleven women (20%) had a total of 13 completed pregnancies at a median of 44 months (range 12-84 months) after index CAD. Two of the pregnant women (18%) had suffered recurrent CAD ≥18 months prior to the pregnancy. All 13 pregnancies and puerperia went without recurrent CADs or cerebrovascular events. This includes giving birth by vaginal delivery (n = 6) and caesarean section (n = 7). None of the five women with typical connective tissue disease became pregnant. CONCLUSIONS: Our observation suggests that the risk of recurrent CAD may not be greatly increased with pregnancies starting at least 12 months after CAD in women without typical connective tissue disease.