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ECG Disease Patterns
 
ECG Disease Patterns
 

Hypercalcaemia on ECG

 
 
 
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Overview

Hypercalcaemia, or an increased serum calcium concentration >2.60 mmol/L, shortens action potentials which primarily results in early ventricular repolarisation (shortened QT) on ECG.
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  • ECG Findings in Hypercalcaemia

  • Shortened QT interval (due to a shortened ST segment)
  • Osborn waves (J waves) - dome or hump-shaped deflections following the J point
  • QRS prolongation
  • PR prolongation
Severe hypercalcaemia may produce ST elevation and T wave inversion that mimics an acute myocardial infarction.
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