Atrioventricular Pacemaker Rhythm - Course # 317-7
- 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”.
- Analyze this tracing using the five steps of rhythm analysis.
- Compare your answers with the answers on the next slide.
Practice Strip Answers
- 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
317 Atrioventricular Pacemaker Rhythm - Course # 317-7