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PR interval

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

The reference range for the PR interval is between 0.2 sec (5 little squares) and 0.12 sec (3 little squares).

The PR interval represents the time taken for activation to pass from the sinus node, across the atrium, through the AV node into the Purkinje system and finally to activate the ventricles.


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