According to a study in Obstetrics & Gynecology, women with preeclampsia and asthma had higher use of beta-blockers like labetalol.

Researchers examined whether diagnosis of asthma correlated with the use of uterotonic and antihypertensive medications for women hospitalized for delivery complicated by postpartum hemorrhage or preeclampsia.

The presence of asthma correlated with a 37% decrease and an 11% increase in the likelihood of carboprost and labetalol use, respectively, in unadjusted analysis. In adjusted analysis, the presence of asthma correlated with a 32% decrease in the likelihood of carboprost use and a 7% reduction in labetalol use.