Reversible High-Degree Atrioventricular Block Associated With Magnesium Toxicity in Severe Pre-Eclampsia.
AF, L., E, T., N, B., LG, M., SC, P., & AM, S. (2026). Reversible High-Degree Atrioventricular Block Associated With Magnesium Toxicity in Severe Pre-Eclampsia.. Annals of noninvasive electrocardiology : the official journal of the International Society for Holt. https://doi.org/10.1111/anec.70233
AF L, E T, N B, LG M, SC P, AM S. Reversible High-Degree Atrioventricular Block Associated With Magnesium Toxicity in Severe Pre-Eclampsia.. Annals of noninvasive electrocardiology : the official journal of the International Society for Holt. 2026; doi: 10.1111/anec.70233
AF L, E T, N B, et al. Reversible High-Degree Atrioventricular Block Associated With Magnesium Toxicity in Severe Pre-Eclampsia.[J]. Annals of noninvasive electrocardiology : the official journal of the International Society for Holt. 2026. DOI: 10.1111/anec.70233.
@article{af2026,
author = {Lwiza AF and Thomas E and Batchu N and Mmbaga LG and Peter SC and Sadiq AM},
title = {Reversible High-Degree Atrioventricular Block Associated With Magnesium Toxicity in Severe Pre-Eclampsia.},
journal = {Annals of noninvasive electrocardiology : the official journal of the International Society for Holt},
year = {2026},
doi = {10.1111/anec.70233},
note = {PMID: 42670803},
}
TY - JOUR AU - Lwiza AF AU - Thomas E AU - Batchu N AU - Mmbaga LG AU - Peter SC AU - Sadiq AM TI - Reversible High-Degree Atrioventricular Block Associated With Magnesium Toxicity in Severe Pre-Eclampsia. T2 - Annals of noninvasive electrocardiology : the official journal of the International Society for Holt PY - 2026 DO - 10.1111/anec.70233 AN - PMID:42670803 ER -
We report a 35-year-old woman at 31 weeks and 5 days' gestation with severe pre-eclampsia and acute kidney injury who developed symptomatic hypermagnesemia (4.49 mmol/L) and 2:1 second-degree atrioventricular block after receiving a standard Pritchard magnesium sulfate regimen. Magnesium sulfate was discontinued, intravenous calcium gluconate was administered, and emergency cesarean delivery was performed. The atrioventricular block resolved completely, and the mother recovered well. This case highlights a rare but reversible manifestation of magnesium toxicity and the importance of early recognition in patients with deteriorating renal function.