1. Body Mass Index, Adverse Pregnancy Outcomes, and Cardiovascular Disease Risk
- Author
-
Khan, Sadiya S, Petito, Lucia C, Huang, Xiaoning, Harrington, Katharine, McNeil, Rebecca B, Bello, Natalie A, Merz, C Noel Bairey, Miller, Eliza C, Ravi, Rupa, Scifres, Christina, Catov, Janet M, Pemberton, Victoria L, Varagic, Jasmina, Zee, Phyllis C, Yee, Lynn M, Ray, Mitali, Kim, Jin Kyung, Lane-Cordova, Abbi D, Lewey, Jennifer, Theilen, Lauren H, Saade, George R, Greenland, Philip, Grobman, William A, and Networks, for the NICHD nuMoM2b and NHLBI nuMoM2b Heart Health Study
- Subjects
Reproductive Medicine ,Biomedical and Clinical Sciences ,Heart Disease ,Maternal Morbidity and Mortality ,Contraception/Reproduction ,Nutrition ,Perinatal Period - Conditions Originating in Perinatal Period ,Conditions Affecting the Embryonic and Fetal Periods ,Women's Health ,Maternal Health ,Pediatric ,Pregnancy ,Cardiovascular ,Diabetes ,Prevention ,Obesity ,Preterm ,Low Birth Weight and Health of the Newborn ,Clinical Research ,4.1 Discovery and preclinical testing of markers and technologies ,2.1 Biological and endogenous factors ,Reproductive health and childbirth ,Good Health and Well Being ,Adult ,Female ,Infant ,Newborn ,Humans ,United States ,Young Adult ,Pregnancy Outcome ,Diabetes ,Gestational ,Premature Birth ,Cardiovascular Diseases ,Hypertension ,Pregnancy-Induced ,Body Mass Index ,Risk Factors ,Hyperlipidemias ,body mass index ,cardiovascular diseases ,hypertension ,pregnancy ,obesity ,NICHD nuMoM2b and NHLBI nuMoM2b Heart Health Study Networks ,Cardiorespiratory Medicine and Haematology ,Clinical Sciences ,Cardiovascular System & Hematology ,Cardiovascular medicine and haematology ,Clinical sciences - Abstract
BackgroundObesity is a well-established risk factor for both adverse pregnancy outcomes (APOs) and cardiovascular disease (CVD). However, it is not known whether APOs are mediators or markers of the obesity-CVD relationship. This study examined the association between body mass index, APOs, and postpartum CVD risk factors.MethodsThe sample included adults from the nuMoM2b (Nulliparous Pregnancy Outcomes Study: Monitoring Mothers-To-Be) Heart Health Study who were enrolled in their first trimester (6 weeks-13 weeks 6 days gestation) from 8 United States sites. Participants had a follow-up visit at 3.7 years postpartum. APOs, which included hypertensive disorders of pregnancy, preterm birth, small-for-gestational-age birth, and gestational diabetes, were centrally adjudicated. Mediation analyses estimated the association between early pregnancy body mass index and postpartum CVD risk factors (hypertension, hyperlipidemia, and diabetes) and the proportion mediated by each APO adjusted for demographics and baseline health behaviors, psychosocial stressors, and CVD risk factor levels.ResultsAmong 4216 participants enrolled, mean±SD maternal age was 27±6 years. Early pregnancy prevalence of overweight was 25%, and obesity was 22%. Hypertensive disorders of pregnancy occurred in 15%, preterm birth in 8%, small-for-gestational-age birth in 11%, and gestational diabetes in 4%. Early pregnancy obesity, compared with normal body mass index, was associated with significantly higher incidence of postpartum hypertension (adjusted odds ratio, 1.14 [95% CI, 1.10-1.18]), hyperlipidemia (1.11 [95% CI, 1.08-1.14]), and diabetes (1.03 [95% CI, 1.01-1.04]) even after adjustment for baseline CVD risk factor levels. APOs were associated with higher incidence of postpartum hypertension (1.97 [95% CI, 1.61-2.40]) and hyperlipidemia (1.31 [95% CI, 1.03-1.67]). Hypertensive disorders of pregnancy mediated a small proportion of the association between obesity and incident hypertension (13% [11%-15%]) and did not mediate associations with incident hyperlipidemia or diabetes. There was no significant mediation by preterm birth or small-for-gestational-age birth.ConclusionsThere was heterogeneity across APO subtypes in their association with postpartum CVD risk factors and mediation of the association between early pregnancy obesity and postpartum CVD risk factors. However, only a small or nonsignificant proportion of the association between obesity and CVD risk factors was mediated by any of the APOs, suggesting APOs are a marker of prepregnancy CVD risk and not a predominant cause of postpartum CVD risk.
- Published
- 2023