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Test Findings

Tall T Waves



    • Look For

    • T wave prominence. Note whether the T waves are symmetrical or asymmetrical.
    • Causes of Tall T Waves

    • Hyperkalaemia
    • Benign early repolarisation
    • Myocardial infarction
    • Interpretation

    • Narrow, symmetrical ‘tented’ T waves - suggestive of hyperkalaemia
    • Tall T waves with concave ST elevation in the precordial leads - suggestive of benign early repolarisation
    • Prominent, symmetrical and pointed (‘hyperacute’) T waves - suggestive of myocardial infarction
    • Example

    • “Tented” T waves associated with mild hyperkalaemia:
    • Tall T Waves
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