Test Findings
 

Short PR Interval

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Overview

    • Look For

    • PR interval <120ms (3mm).
    • Causes of Short PR Interval

    • Normal variant (accelerated conduction through the AV node)
    • Preexcitation (accessory pathway) - Wolff-Parkinson-White syndrome, Lown-Ganong-Levine syndrome
    • Example

    • Short PR interval in the context of Wolff-Parkinson-White syndrome, with visible delta wave:
    • Short PR Interval
       
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