ACOG and SMFM have released guidance, stating that they “support the USPSTF guideline criteria for prevention of preeclampsia” on the use of low-dose aspirin during pregnancy to prevent preeclampsia. When indicated, low-dose aspirin should be started between 12 to 28 weeks and continued until delivery. Optimally, aspirin usage should begin <16 weeks.
Further, the screening algorithm used includes first-trimester serum markers, including placental growth factor and pregnancy-associated plasma protein-A, as well as uterine artery dopplers, which limits the generalizability to a U.S. population. Therefore, a higher dose or doubling of the available 81-mg dose cannot be recommended at this time.
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