Short PR Interval
April 24th, 2019
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:
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