Hypertension or diabetes before pregnancy linked to higher risk of fetal heart defects
Women with chronic hypertension (high blood pressure before pregnancy or diagnosed before 20 weeks of pregnancy) had a 30% higher risk of having a baby with critical congenital heart disease, the most severe form of heart defects, when compared to women with normal blood pressure before and during pregnancy, according to new independent, preliminary research presented at the American Heart…
A preliminary study presented at the American Heart Association's Scientific Sessions 2026 has found that women with chronic hypertension before pregnancy or diagnosed before 20 weeks of pregnancy have a 30% higher risk of giving birth to a baby with critical congenital heart disease (CCHD). The study, conducted by Dr. Saad Ur Rahman and colleagues, analyzed maternal health factors to evaluate the potential association between high blood pressure-related disorders during pregnancy and the risk of CCHD, the most severe type of congenital heart disease.
The prevalence of chronic hypertension during pregnancy increased by nearly 48% between 2018 and 2024, while the prevalence of CCHD rose by about 10% during the same period. The researchers emphasize the importance of monitoring blood pressure, discussing heart health with clinicians, and receiving appropriate care before and during pregnancy to reduce the risk of fetal heart defects.
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