To elucidate patients' knowledge and counseling perspective on aspirin reducing the risk of hypertensive disorders of pregnancy (HDP). A quantitative survey was performed including women who are members of the patient orgasnization Dutch HELLP Foundation due to a history of HDP. Awareness of the risk-reducing effect of aspirin on HDP was present in 51.9% of the 189 women. The majority was informed by their gynecologist (89.8%) and preferred to be informed by a gynecologist (79.4%), at the postpartum checkup (42.3%) or in the consecutive pregnancy (30.7%), both orally and written (62.4%). Half of the women with a history of HDP were aware of the risk-reducing effect of aspirin in a consecutive pregnancy. [ABSTRACT FROM AUTHOR]