Abstract P101: Hypertension in Pregnancy and Risk of Hypertension in Later Life: The Bogalusa Heart Study
Background: Few studies have examined whether hypertension in pregnancy imposes long-term cardiovascular risk compared to a normal pregnancy. The objective of this study was to examine if previous history of hypertension in pregnancy is a risk for hypertension after pregnancy.
Methods: A case-control analysis was performed using the Bogalusa Heart Study database. Cases were defined as women whose systolic blood pressure ≥140 mmHg or diastolic ≥ 90 mmHg, or having hypertension treatment. Controls were defined as women with normal blood pressure. After exclusions, 604 women (67% white and 33% black, aged 32-44 years) were included for analysis. Univariable and multivariable logistic regression were used to estimate the odds ratio (OR) and 95% confidence interval (CI).
Results: The prevalence of hypertension in women was 12.1% (73/604). Hypertensive women had higher proportion of previous history of hypertension in pregnancy (25/73, 34%) than normotensive controls (83/531, 13.7%), with an OR of 2.81 (95% CI: 1.64-4.81). After adjustment for age, race, body mass index and smoking, adjusted OR (aOR) of having previous history of hypertension in pregnancy for developing hypertension later was 1.36 (1.00-3.75). In addition, age, black ethnicity and body mass index were associated with hypertension, with aORs of 1.16 (1.09-1.25), 3.73 (2.13-6.52), and 1.09 (1.05-1.13), respectively.
Conclusions: Hypertension in pregnancy may be associated with an increased risk of hypertension in later life. Further studies are needed to separate the effect of pregnancy-induced hypertension and pre-exiting chronic hypertension on the subsequent risk of hypertension later in life.
Author Disclosures: S. Li: None. X. Xiong: None. C. Fernandez: None. W. Chen: None. S.R. Srinivasan: None. G.S. Berenson: None.
This research has received full or partial funding support from the American Heart Association, National Center.
- © 2014 by American Heart Association, Inc.