Pregnancy is increasingly understood not as a cardiovascular neutral event but as a profound stress test that can expose and amplify underlying heart disease risk — and for too many women in the United States, that test is proving fatal. The fact that heart disease has surpassed hemorrhage and infection as the top cause of pregnancy-related death reframes how clinicians and patients should approach reproductive planning and postpartum follow-up.
This review published in Obstetrics and Gynecology synthesizes evidence on the full arc of cardiovascular risk surrounding pregnancy, from preconception through the extended postpartum window. The authors examine how modifiable risk factors — hypertension, type 2 diabetes, dyslipidemia, and obesity — compound cardiovascular vulnerability during gestation and persist well after delivery. For women with pre-existing cardiac conditions, the modified World Health Organization 2.0 classification is highlighted as a validated framework for stratifying risk before conception occurs. Clinically, the review addresses a diagnostically challenging problem: distinguishing normal pregnancy-related dyspnea from early heart failure signals, with NT-proBNP biomarker testing identified as a useful discriminating tool. The leading direct killers examined include peripartum cardiomyopathy, acute myocardial infarction, and hypertensive disorders of pregnancy. The authors argue that perinatal CVD risk algorithms and remote postpartum monitoring programs hold particular promise for closing the pronounced racial mortality gap, with Black women bearing a disproportionate burden of these deaths.
This review arrives in a context where US maternal mortality rates are already outliers among high-income nations, and the cardiovascular subset of those deaths is both undercounted and under-addressed. The racial disparity dimension is especially critical — structural inequities in preconception care access and postpartum follow-up likely drive much of this gap, meaning algorithmic risk tools alone are insufficient without systemic delivery reform. The review is narrative rather than a meta-analysis, limiting causal inference, but it consolidates a practical evidence base that cardiologists, obstetricians, and primary care physicians managing reproductive-aged women should find actionable. Incrementally confirmatory in parts, it is nonetheless a timely synthesis given rising cardiometabolic disease prevalence in younger adults.