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Atrioventricular Pacemaker Rhythm - Pacemaker Rhythms.

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Atrioventricular Rhythm

  • This rhythm is easily identified by the conspicuous presence of a pacing spike immediately preceding the P waves and the QRS complexes.
  • The PR interval is measured from the atrial spike to the ventricular spike. This is also referred to as AV delay.
  • This “delay” is programmed by the physician during implantation to mimic the natural delay of the PR interval to facilitate the “atrial kick”.

Practice Strip

atrioventricular tracing question

Analyze this tracing using the five steps of rhythm analysis.

Show Answer
  • Rhythm: regular
  • Rate 88
  • P Wave: upright and uniform with spikes
  • PR interval: 0.18 sec
  • QRS: 0.16 sec, wide and bizarre with spikes
  • Interpretation: Atrioventricular (sequential) Pacemaker Rhythm

Authors and Reviewers

Authored by Thomas O'Brien
Medically reviewed by Dr. Jonathan Keroes, MD, Cardiology
Last Update: 11/8/2020

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