Hypercalcaemia on ECG
February 15th, 2021
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.
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.
Next Page
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------