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The relationship between right ventricular lead position and paced QRS duration
Tohru Kawakami1, Nobukiyo Tanaka, Hiroyoshi Ohno
1Division of Cardiology, Ichinomiyanishi Hospital, Ichinomiya, Aichi, Japan. tkawakami-ind@umin.ac.jp
Pacing and Clinical Electrophysiology : PACE
|December 21, 2012
Summary
The anatomical location of right ventricular pacing impacts paced QRS duration. Cardiac angiography can identify pacing sites that result in shorter QRS durations, optimizing pacemaker function.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Imaging
Background:
- The correlation between right ventricular pacing site and paced QRS duration remains unclear.
- Understanding this relationship is crucial for optimizing pacemaker therapy.
Purpose of the Study:
- To investigate the relationship between anatomical right ventricular pacing sites and paced QRS duration.
- To determine if cardiac angiography can identify optimal pacing locations.
Main Methods:
- Fifty patients with pacemakers underwent cardiac angiography.
- Right ventricular lead positions were analyzed using right ventriculograms (RVG) and left ventriculograms (LVG).
- Paced QRS duration was measured and correlated with pacing site.
Main Results:
- Paced QRS duration was significantly longer at the right ventricular apex compared to outflow and inflow areas.
- Significant differences in paced QRS duration were observed across left ventricular angiographic views, except for the apex.
- Cardiac angiography revealed distinct QRS durations based on pacing location.
Conclusions:
- A clear relationship exists between the anatomical right ventricular pacing site and paced QRS duration.
- Cardiac angiography is a valuable tool for identifying pacing sites that yield shorter QRS durations.
- This finding can guide lead placement for improved pacemaker performance.
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