Update on long-term cardiovascular risk after pre-eclampsia: a systematic review and meta-analysis

Background/introduction There is a need for further studies on the cardiovascular risk of women experiencing pre-eclampsia (PE).Purpose To update the literature regarding the association between a history of PE and subsequent cardiovascular diseases, including cardiovascular death, coronary heart diseases, heart failure, and stroke, focusing on the trend in the effect size (ES) estimates over time.Methods and results Following PRISMA guidelines, from inception to May 2023, we performed a systematic review of PubMed, MEDLINE, Scopus, and EMBASE. Randomized, cohort, or case-control studies in English were included if fulfiling the following criteria:(i) The association between PE and subsequent cardiovascular disease was adjusted for clinically relevant variables, (ii) the presence of a control group, and (iii) at least 1 year of follow-up. Pooled adjusted ESs and 95% confidence intervals (CIs) were used as effect estimates and calculated with a random-effect model. Twenty-two studies met the inclusion criteria. PE was associated with a higher risk of cardiovascular death (ES 2.08, 95% CI 1.70-2.54, I-2 56%, P < 0.00001), coronary artery diseases (ES 2.04, 95% CI 1.76-2.38, I-2 87%, P < 0.00001), heart failure (ES 2.47, 95% CI 1.89-3.22, I-2 83%, P < 0.00001), and stroke (ES 1.75, 95% CI 1.52-2.02, I-2 72%, P < 0.00001) after adjusting for potential confounders. This risk is evident in the first 1-to-3 years of follow-up and remains significant until 39 years of follow-up.Conclusions Compared to women who experienced a normal pregnancy, those suffering from PE have about double the risk of lifetime cardiovascular disease.