Electrocardiographic Changes in Pregnant Patients With Congenital Heart Disease For the STORCC Investigators

Maria A. Pabon, Amrit Misra, Kimberlee Gauvreau, Madeline E. Duncan, Ava Conklin, Katherine E. Economy, Fred M. Wu, Thomas Tadros, Anne Marie Valente, Shivani R. Aggarwal, Nael Aldweib, Alex Alexander, Laith Alshawabkeh, Tooba Z. Anwer, Nancy Barker, Fernando Baraona Reyes, Yonatan Buber, Jean Marie Carabuena, Matthew Carazo, Christopher DeZorziVedang Diwanji, Sheila Drakeley, Valeria Duarte, Sarah Rae Easter, Gabriele Egidy Assenza, Kimberlee Gauvreau, Julia Graf, Michelle Gurvitz, Daniel Halpern, Amy Harmon, Kelsey Hickey, Jenna Hynes, Caitlyn Joyce, William P. Knapp, Navya Krishna, Michael Landzberg, Matthew Lippmann, Anais Marenco, Sarah E. Miller, Mary Mullen, Alexander Opotowsky, Sara Partington, Tony Pastor, Saraubh Rajpal, Anna Ray, Carla P. Rodriguez-Monserrate, Carrie Rouse, Zoe Schefter, Keri Shafer, Michael N. Singh, Ada C.Stefanescu Schmidt, Bushra Taha, Allison L. Tsao, Shailendra Upadhyay, Christopher Valle, Sara Villegas-Keech, Alexandria F. Williams, Fred Wu

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Electrocardiograms (EKGs) are routinely performed in pregnant patients with pre-existing cardiovascular disease. However, in pregnant patients with congenital heart disease (CHD), EKG changes during gestation have not been explored. Methods: We performed a retrospective study of pregnant patients with CHD enrolled in the STORCC initiative. Patients were included if they had at least two EKGs across the perinatal period and were grouped by specific conditions: atrial septal defect (ASD), tetralogy of Fallot, congenital pulmonary stenosis, coarctation of the aorta (CoA), bicuspid aortic valve (BAV), systemic right ventricle (SRV), and Fontan circulation. EKG parameters were measured in all available EKGs by two investigators, blinded to diagnosis and time of gestation. Results: One hundred and seventy pregnant patients were included. There was a statistically significant increase in HR from pre-pregnancy to third trimester in all groups except for those with Fontan and SRV. Patients with ASD and BAV had a statistically significant increase in their QTc (ASD:13 ms, p = 0.017; BAV:7 ms, p = 0.018) during pregnancy. QRS duration was shorter (4 ms) in the third trimester for patients with ASD (p = 0.033) and CoA (p = 0.014). Despite these individual findings, EKG parameters remained within normal limits and regressed to baseline in the postpartum period. Conclusions: Patients with CHD have statistically significant EKG changes throughout pregnancy, but the values remain within normal limits. Like patients without heart disease, those with CHD increase their HR during pregnancy, except individuals with SRV and Fontan, who appear to lack capacity for physiologic HR augmentation.

Original languageEnglish (US)
Article numbere70037
JournalAnnals of Noninvasive Electrocardiology
Volume30
Issue number1
DOIs
StatePublished - Jan 2025

Keywords

  • adult congenital heart disease
  • congenital heart disease
  • electrocardiogram
  • heart rate
  • pregnancy

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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