Aspirin use during pregnancy and the risk of bleeding complications: a Swedish population-based cohort study

Abstract

Background: Aspirin is offered to pregnant women to prevent preeclampsia, a severe obstetrical complication. Large studies of nonpregnant populations have consistently shown that aspirin prophylaxis increases the risk of hemorrhagic complications. However, there have not been any population-based studies investigating this in a pregnant population. Objective: This study aimed to investigate whether aspirin use during pregnancy is associated with an increased risk of bleeding complications. Study Design: We performed a register-based cohort study using the Swedish Pregnancy Register wherein we examined 313,624 women giving birth between January 2013 and July 2017. Logistic regression was used..