JOURNAL ARTICLE

Hypertensive Disorders of Pregnancy and Maternal Cardiovascular Disease Risk Factor Development: An Observational Cohort Study

Jennifer J Stuart, Lauren J Tanz, Stacey A Missmer, Eric B Rimm, Donna Spiegelman, Tamarra M James-Todd, Janet W Rich-Edwards
Annals of Internal Medicine 2018 August 21, 169 (4): 224-232
29971437

Background: Women with a history of hypertensive disorders of pregnancy (HDP) are nearly twice as likely to develop cardiovascular disease (CVD) as those who are normotensive during pregnancy. However, the emergence of CVD risk factors after HDP is less well-understood.

Objective: To identify associations between HDP and maternal CVD risk factors and chart the trajectory of risk factor development after pregnancy.

Design: Observational cohort study.

Setting: United States.

Participants: 58 671 parous NHS II (Nurses' Health Study II) participants who did not have CVD or risk factors of interest at baseline.

Measurements: Women were followed for self-reported physician diagnosis of chronic hypertension and hypercholesterolemia and confirmed type 2 diabetes mellitus (T2DM) from their first birth through 2013; mean follow-up ranged from 25 to 32 years across these end points. Multivariable Cox proportional hazards models estimated hazard ratios (HRs) and 95% CIs, with adjustment for prepregnancy confounders.

Results: Compared with women who were normotensive during pregnancy, those with gestational hypertension (2.9%) or preeclampsia (6.3%) in their first pregnancy had increased rates of chronic hypertension (HRs, 2.8 [95% CI, 2.6 to 3.0] and 2.2 [CI, 2.1 to 2.3], respectively), T2DM (HRs, 1.7 [CI, 1.4 to 1.9] and 1.8 [CI, 1.6 to 1.9], respectively), and hypercholesterolemia (HRs, 1.4 [CI, 1.3 to 1.5] and 1.3 [CI, 1.3 to 1.4], respectively). Although these women were more likely to develop CVD risk factors throughout follow-up, the relative risk for chronic hypertension was strongest within 5 years after their first birth. Recurrence of HDP further elevated risks for all end points.

Limitation: Participants self-reported HDP.

Conclusion: Women with HDP in their first pregnancy had increased rates of chronic hypertension, T2DM, and hypercholesterolemia that persisted for several decades. These women may benefit from lifestyle intervention and early screening to reduce lifetime risk for CVD.

Primary Funding Source: National Institutes of Health.

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