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Case report
Reversible complete heart block due to hypercalcaemia
  1. Venkatakrishnan Ramakumar,
  2. Shyam S Kothari,
  3. Sandeep Seth and
  4. Sumit Kumar
  1. Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
  1. Correspondence to Professor Shyam S Kothari; kothariss100{at}gmail.com

Abstract

A 65-year-old woman presented to the emergency room with a syncope. An ECG done revealed complete heart block with a narrow QRS escape rhythm and a normal QT interval. Further investigation revealed severe hypercalcaemia and elevated parathormone levels. Her heart block disappeared on correction of the hypercalcaemia. A right inferior parathyroid adenoma was found and surgically removed. Thus, hypercalcaemia may lead to reversible complete heart block without QT interval shortening.

  • arrhythmias
  • cardiovascular medicine
  • pacing and electrophysiology
  • calcium and bone

https://doi.org/10.1136/bcr-2020-238537

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    Footnotes

    • Contributors VR and SK were involved in conceptualisation, drafting and intellectual content. SSK and SS were involved in drafting, intellectual content, critical reviewing and final approval.

    • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

    • Competing interests None declared.

    • Patient consent for publication Next of kin consent obtained.

    • Provenance and peer review Not commissioned; externally peer reviewed.