Reproductive Outcomes for Women With Vasculitis.

Objective: There are limited data on the reproductive health of women with vasculitis. This study used a prospective, international vasculitis pregnancy registry to survey women during and after pregnancy.

Methods: The Vasculitis Pregnancy Registry (VPREG) is imbedded within the Vasculitis Patient-Powered Research Network, an international online research infrastructure. Any pregnant woman with a diagnosis of vasculitis can self-enroll. After enrollment, women are invited to complete online surveys at study entry, once per trimester, and postpartum. Descriptive statistics are reported here.

Results: Between 2015 and 2022, 147 women with 149 pregnancies enrolled in VPREG from 16 countries. Data on 78 pregnancies with known outcomes were included in this analysis. During pregnancy, women on average experienced low levels of pain related to vasculitis (scale 0-10, median 2 [IQR 1-5]) and preserved feelings of wellness (scale 0-10, median 3 [IQR 1-5]). Thirty-six percent of women reported their vasculitis was active during pregnancy. Of the 14 women requiring hospitalization during pregnancy outside of delivery, 4 cited active vasculitis as the indication. Most women (54/73, 74%) were prescribed medications for vasculitis during pregnancy. Seventy-six (97%) pregnancies resulted in live births, with 64% delivering vaginally and 21% experiencing a preterm delivery.

Conclusion: These results demonstrate that most women with vasculitis can experience pregnancies that result in live births delivered at term. During pregnancy, a minority of women reported flares of vasculitis or the need for hospitalization due to vasculitis. These data are useful to rheumatologists and patients to inform and facilitate discussions about reproductive health and vasculitis.