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Poster Session 4

Category: Clinical Obstetrics

Poster Session 4

(1259) Vaping during pregnancy: implications for maternal and fetal health

Thursday, February 12, 2026

3:30 PM - 5:00 PM

Coauthor(s)

AH

Anna Harb, MD

University of Tennessee Graduate School of Medicine
Knoxville, Tennessee, United States
Megan L. Young, MPH (she/her/hers)

Process Improvement and Quality Review Manager
University of Tennessee Medical Center
Knoxville, Tennessee, United States
Jill M. Maples, PhD

Associate Professor
University of Tennessee Health Science Center COM Knoxville
Knoxville, Tennessee, United States

Submitting Author(s)

Jordan E. Lewis, MPH

Researcher
University of Tennessee Graduate School of Medicine
Knoxville, Tennessee, United States

Presenting Author(s)

Shelley M. Stiltner, MD (she/her/hers)

OB/GYN Resident
University of Tennessee Graduate School of Medicine
Knoxville, Tennessee, United States

Coauthor(s)

HM

Heather Moss, MD

Assistant Professor
University of Tennessee Graduate School of Medicine
Knoxville, Tennessee, United States

Objective:
As electronic vapor product (EVP) use becomes increasingly prevalent—particularly among younger populations—it is often perceived as a safer alternative to tobacco, despite limited data on its perinatal effects. This study aimed to assess whether EVP and/or tobacco exposure is associated with maternal factors such as psychiatric disorders and breastfeeding intentions as well as perinatal complications such as fetal growth restriction, preterm delivery, and premature rupture of membranes (PPROM), with the goal of informing clinical counseling and public health recommendations.

Study Design:
This retrospective cohort study included pregnant individuals who delivered at the University of Tennessee Medical Center between June 2023-April 2024. Electronic health and delivery record data was collected on EVP use, tobacco use, and maternal and neonatal outcomes. Variables included any history of psychiatric disorders, premature rupture of membranes (PPROM), preterm birth, fetal growth restriction, and breastfeeding plan on admission. Differences in maternal and fetal outcomes by tobacco and EVP usage were tested using chi square analysis. Multivariable logistic regressions were used to examine the associations between tobacco or EVP usage and fetal growth restriction, preterm delivery, and PPROM after adjusting for covariates.

Results:
Differences in maternal fetal outcomes between the patients who did not use smoked tobacco or EVP, smoked tobacco only, EVPs only, or both are presented in Table 1. After controlled for multiple factors, EVP use increased the odds of PPROM, while smoking tobacco increased the odds of FGR, and both EVP and tobacco use increased the odds of preterm delivery (Table 2).

Conclusion:
Among pregnant patients who reported tobacco and/or EVP usage, there are multiple associations with adverse maternal and fetal outcomes. EVPs should not be recommended as a safe alternative to tobacco use in pregnancy.