First Degree Heart Block

First Degree Heart Block EKG tracing

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Caliper Time Interval: ___ seconds




RhythmRegular
RateThe underlying rate
P WaveNormal
PR IntervalProlonged (>0.20 sec)
QRSNormal (0.06-0.10 sec)
NotesA first degree AV block occurs when electrical impulses moving through the Atrioventricular (AV) node are delayed (but not blocked). First degree indicates slowed conduction without missed beats.


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This website is intended for use by medical professionals for educational purposes only. For medical care, contact a healthcare provider. Copyright 2017 © Medical Training and Simulation LLC. All Rights Reserved.