Complete Heart Block Due to High Vagal Tone in Pregnancy
Atrioventricular (AV) block is rare in pregnancy.1 Most cases of complete heart block (CHB) that occur during pregnancy are due to congenital CHB that presents in the peripartum period. The pathogenesis of acquired CHB in pregnancy is not fully understood. Various mechanisms have been proposed, including atrial stretch and the effect of estrogen on estrogen receptors.2 We report a case of vagally mediated CHB. This condition causes variable intranodal AV block, which does not necessitate pacing and can be managed conservatively.
Authors
- Ella Cockburn (ORCID: https://orcid.org/0009-0003-2314-8374)
- J. Yao (ORCID: https://orcid.org/0000-0001-8974-4265)
- Robert L. Anderson (ORCID: https://orcid.org/0009-0000-5568-7768)
Institutions
- The Royal Melbourne Hospital (AU)
- The University of Melbourne (AU)
Publication Details
- Journal
- CJC Open
- Published
- 2025-06-09
- DOI
- https://doi.org/10.1016/j.cjco.2025.06.001
- Primary Topic
- Cardiac Arrhythmias and Treatments
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- University of Melbourne