OBJECTIVES : The aim of the study is to measure the knowledge of thrombosis amongst pregnant women grouped by the risk factors of the disease and the role of the midwives in informing gravidas.

METHODS : The study was quantitative and cross-sectional. Data was collected with an online questionnaire in 2017 from women with ongoing or previous pregnancies (n=103). Non-random, expert sampling was performed from the participant responses meeting the inclusion criteria. Data was analysed using descriptive statistics and χ² test (p<0,05).

RESULTS : Over 50% of the included women were overweight or obese, ¼ were diagnosed with thrombotic gene mutation. Respondents’ age, nutritional status and familial history of thrombosis did not affect knowledge about the disease (symptoms, treatments, risk factors)(p>0.05). There was a correlation between the number of pregnancies and the amount of knowledge about the risk factors (p<0.05). Education, number of pregnancies and the presence of gene mutation (p<0.05) had a significant correlation with the knowledge of possible treatments. Participants with higher level of education knew more information on symptoms (p<0.05). 57% of gravidas had a lifestyle change during pregnancy. Less than 50% of the respondents did so because of the increased risk during pregnancy or for the protection of the foetus. Lifestyle change was affected by previous thrombotic disease and familial history (p<0.05). Information from midwives about the disease and risk factors in the affected group was especially good (p<0.05). Knowledge dissemination about prevention was significant in the group of women with gene mutation and previous thrombosis (p<0.05).

CONCLUSIONS : Knowledge level of higher educated and pregnant can be considered good but the information of the group with higher risk of thrombosis is incomplete. The role of the midwives is exceptionally important in health promotion, but more attention is needed in the group affected by the familial history of thrombosis.