Pregnancy Blood Pressure & Hypertension Risk: Study Findings
women with normal blood pressure during pregnancy may still be at a higher risk of developing hypertension after childbirth.A new study published in the Journal of the American college of Cardiology: Advances reveals that the lack of a typical mid-pregnancy blood pressure drop can significantly elevate hypertension risk within five years postpartum, potentially affecting 12% of pregnant women. Researchers tracked 854 women, discovering that specific blood pressure patterns during pregnancy are linked to the later growth of hypertension. This research underscores the importance of early monitoring and proactive intervention, as current clinical guidelines may not identify these women as high-risk. News Directory 3 provides updates on crucial health findings. Are you curious about the environmental factors in the team’s next planned research?
Normal Blood Pressure During Pregnancy May Mask Hypertension Risk
Updated June 5, 2025
Women who maintain clinically normal blood pressure levels throughout pregnancy, but do not experience the typical mid-pregnancy drop, face a significantly elevated risk of developing hypertension in the five years following childbirth. A study published in the journal of the American Collage of Cardiology: Advances highlights this underrecognized risk, potentially impacting 12% of pregnant women.
Researchers, wiht support from the National Institutes of Health, tracked blood pressure and health indicators in 854 women during pregnancy and for up too five years postpartum. This longitudinal study revealed a connection between specific blood pressure patterns and later advancement of hypertension. The study focused on blood pressure patterns during pregnancy and the risk of postpartum hypertension, a key area of women’s heart health.
The majority of women, 80.2%, maintained consistently low systolic blood pressure during pregnancy. Another 7.4% experienced high blood pressure that decreased in the second trimester before rising again. However, 12.4% exhibited slightly elevated systolic blood pressure without the characteristic mid-pregnancy dip. This latter group faced a 4.91 times greater risk of developing hypertension within five years of giving birth compared to the group with consistently low blood pressure.
Shohreh Farzan, associate professor at the Keck School of Medicine of USC and the study’s senior author, noted that current clinical guidelines woudl not identify this group as high-risk. “This group of women would not be identified as having higher long-term hypertension risk by any of the current clinical criteria, since their blood pressure remained below diagnostic thresholds and most did not have other traditional risk factors,” Farzan said.
Zhongzheng (Jason) Niu, assistant professor at the University at Buffalo and the study’s first author, suggests that monitoring blood pressure patterns throughout pregnancy could help identify this at-risk population and facilitate early interventions to prevent cardiovascular disease.
What’s next
Farzan, Niu, and their team are planning further research to validate these findings and investigate the potential link between environmental factors, such as air pollution and exposure to heavy metals, and changes in blood pressure during and after pregnancy. the goal is to refine clinical practices for better identification and management of hypertension risk in women.