Hypertension in pregnancy is a risk factor for peripheral arterial disease decades after pregnancy

Background: An ankle-brachial index (ABI) (the ratio of ankle to brachial artery systolic blood pressure) value ≤0.9 identifies patients with peripheral arterial disease (PAD) and elevated cardiovascular event risk. This study examined whether women with a history of hypertension in pregnancy are more likely to have an ABI ≤0.9 decades after pregnancy. Methods and results: ABI was measured in nulliparous women (. n=144), and women with a history of normotensive (. n=1272) or hypertensive (. n=281) pregnancies who participated in the Genetic Epidemiology Network of Arteriopathy (GENOA) study [non-Hispanic white (39%) and black (61%) women, 60 (mean)±10 (SD) years of age]. Relationships between PAD and pregnancy history were examined by logistic regression. Compared to women with a history of normotensive pregnancy, women with a history of hypertensive pregnancy had greater odds of PAD (1.61 (odds ratio); 1.04-2.49 (95% confidence interval), p=0.03, adjusted for age, race, height and heart rate). Additional adjustment for ever smoking, hypertension, diabetes, dyslipidemia, a family history of hypertension or coronary heart disease, body mass index and education did not attenuate this relationship (1.63; 1.02-2.62, p=0.04). PAD risk did not differ between women with a history of normotensive pregnancy and nulliparous women (1.06; 0.52-2.14, p=0.87). Conclusions: Hypertension in pregnancy is an independent risk factor for PAD decades after pregnancy after adjusting for race, age, height, heart rate, ever smoking, hypertension, diabetes, dyslipidemia, a family history of hypertension or coronary heart disease, body mass index and education.