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Test Findings

Short PR Interval

April 24th, 2019


  • 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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