Alteplase Therapy for Acute Ischemic Stroke in Pregnancy: Two Case Reports and a Systematic Review of the Literature.

Acute ischemic stroke (AIS) during pregnancy is a rare but serious complication. Intravenous alteplase is the only medication approved for hyperacute treatment of AIS; however, it has not been evaluated prospectively in pregnancy. Pregnancy was an exclusion criterion in prospective AIS studies and was only recently removed as a relative contraindication in the 2018 American Heart Association/American Stroke Association Stroke guidelines. Due to the exclusion of pregnant women from randomized controlled trials, the safety of fibrinolytic therapy in pregnant patients is not well established. In this review, we report the use of intravenous alteplase for AIS in two pregnant patients, with temporally associated clinical improvement and without complications to either the mother or fetus. Additionally, we summarize a systematic review of the literature for both intravenous and intra-arterial alteplase use for AIS in pregnant patients. A total of 31 cases met inclusion criteria for this review of assessment of safety and efficacy of alteplase use in pregnancy. Existing case reports and guidelines support the use of alteplase for AIS in pregnant patients without contraindications.