Aspirin prophylaxis for superimposed preeclampsia in women with chronic hypertension: a retrospective cohort study.
OBJECTIVE Chronic hypertension (CHT) is a major risk factor for superimposed preeclampsia, but the effectiveness of aspirin prophylaxis in women with CHT remains uncertain, particularly in Asian populations. We evaluated the association of aspirin use with superimposed preeclampsia and related maternal and perinatal ou...