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ORIGINAL RESEARCH article

Front. Endocrinol.

Sec. Cardiovascular Endocrinology

Volume 16 - 2025 | doi: 10.3389/fendo.2025.1601897

The Effect of Surgical Cure of Primary Hyperparathyroidism on Cardiac Electrical Activity. A Cross-Sectional Study

Provisionally accepted
Piotr  KmiećPiotr KmiećIzabela  Maria Karwacka-BujakIzabela Maria Karwacka-Bujak*Michał  BohdanMichał BohdanRenata  Świątkowska-StodulskaRenata Świątkowska-StodulskaKrzysztof  SworczakKrzysztof Sworczak
  • Medical University of Gdansk, Gdańsk, Poland

The final, formatted version of the article will be published soon.

Cardiovascular complications are not assessed routinely in the management of primary hyperparathyroidism (pHPT), nor do they constitute indications for surgical treatment of this disorder.Research concerning the effects on cardiac electrical activity in PHPT is scarce.In the current study, 45 consecutive pHPT patients with hypercalcaemia and elevated parathyroid hormone levels were assessed clinically, biochemically and by 24-h ECG monitoring before, one and six months after curative parathyroidectomy (PTX).There were 41 female and four male subjects, their mean age was 54.6 ±14.6 years. 20 patients were normotensive and 25 had previously or newly diagnosed hypertension. Patients without hypertension compared to the hypertensive ones had lower BMI: 23.2 (20.3-25.4) versus 26.7 (24.8-28.4), higher total calcium: 11.9 ±0.8 versus 11.3 ±0.9 mg/dL, and shorter QTc: 418 ±17 versus 436 ±17 ms, p<0.001. Before surgery, Ca and PTH correlated negatively with QTc. Upon curative PTX, the median number of supraventricular premature beats (SVPBs) and ventricular premature beats (VPBs) decreased significantly, which was paralleled by a 37% decrease in the prevalence of clinically significant SVPBs (>76 per 24h), and a 29% decrease in the number of patients with more than 3 VPBs/24h six months after surgery. QTc increased from 428 ±19 before to 441 ±17 ms after PTX. The change in the median number of SVPBs and VPBs was comparable between patients with versus without HT.Curative PTX normalizes QTc, reduces supraventricular and ventricular extrasystoles in patients with hypercalcaemic pHPT.

Keywords: primary hyperparathyroidism, Parathyroidectomy, Hypertension, Premature cardiac complexes, Electrocardiography

Received: 28 Mar 2025; Accepted: 02 Jul 2025.

Copyright: © 2025 Kmieć, Karwacka-Bujak, Bohdan, Świątkowska-Stodulska and Sworczak. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Izabela Maria Karwacka-Bujak, Medical University of Gdansk, Gdańsk, Poland

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