Abstract 15755: Associations Between Use of Assisted Reproductive Technology Intrauterine Insemination With Adverse Pregnancy Outcomes in U.S. Natality Data, 2016 - 2021

Abstract

Background/Hypothesis: Assisted reproductive technology (ART) and intrauterine insemination (IUI) may be associated with increased risk of adverse pregnancy outcomes (APOs) and contribute to future cardiovascular disease. Aims: To determine the joint association of ART/IUI and pre-pregnancy cardiometabolic factors with APOs in a national sample. Methods: We analyzed Natality Data from the National Vital Statistics System of the National Center for Health Statistics between 2016-2021. We used multivariable logistic regression to estimate the joint association of ART/IUI and pre-pregnancy cardiometabolic risk factors with APOs. Results: Among 21,625,155 deliveries, women who conceived with either ART (n=228,597) or IUI (n=136,630) were older, more likely White or Asian race, more educated, and less likely to smoke than those who conceived without fertility treatments. Compared to pregnancies conceived without fertility treatments and with no pre-pregnancy cardiometabolic risk factors, ART/IUI-conceived pregnancies were generally associated with increased risk of gestational diabetes, pregnancy induced hypertension, and eclampsia among both women with and without pre-pregnancy cardiometabolic risk factors (Table 1). Women who conceived with ART/IUI and had ≥ 2 cardiometabolic risk factors had the highest adjusted OR of gestational diabetes (2.45 [2.41, 2.67]), while those who conceived with ART/IUI and had pre-pregnancy diabetes had the highest adjusted OR of pregnancy induced hypertension (3.37 [3.00, 3.79]). Conclusions: Patients with pregnancies conceived by ART/IUI are at an increased risk of APOs, including gestational diabetes, pregnancy induced hypertension and eclampsia. The presence of pre-pregnancy cardiometabolic factors modestly increases this risk. Clinicians should consider targeted strategies to optimize the pre-pregnancy cardiometabolic health of women seeking infertility treatments.