What are the ECG characteristics of hypercalcemia?

Updated: Oct 03, 2018
  • Author: Mahendra Agraharkar, MD, MBBS, FACP, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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On electrocardiography (ECG), characteristic changes in patients with hypercalcemia include shortening of the QT interval. ECG changes in patients with very high serum calcium levels include the following [14, 15, 16] :

  • Slight prolongation of the PR and QRS intervals
  • T wave flattening or inversion
  • A J wave at the end of the QRS complex
  • ST elevation mimicking acute myocardial infarction

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