Key result
Low right atrial septal pacing using a new 'over the wire' lead system achieved an acute implantation and short-term success rate of >90% in 100 patients without major complications.
Why the study?
Does a new "over the wire" lead system allow for successful and safe implantation of active fixation leads for low right atrial septal pacing?
Observational (n=100)
Does a new "over the wire" lead system allow for successful and safe implantation of active fixation leads for low right atrial septal pacing?
A new "over the wire" lead system facilitates successful and safe low right atrial septal pacing with stable electrical parameters at 6 months.
New over-the-wire lead may ease LAS insertion; leaves open whether it reduces paroxysmal AF in practice.
BACKGROUND: Pacing in the low right atrial septum (LAS) appears superior to right atrial appendage or free wall stimulation for the prevention of paroxysmal atrial fibrillation. However, insertion of active fixation lead in the low right atrial septal position is difficult and time consuming, inhibiting application of this pacing method in daily practice. METHODS: The technique of handling and positioning of a new "over the wire" lead system is presented with emphasis on electrocardiographic P wave pattern and fluoroscopic landmarks. RESULTS: The initial results demonstrate an acute implantation and short-term success of LAS pacing of >90% in the first 100 patients without major complications. Pacing thresholds at 3 and 6 months were fully comparable with that of the conventional atrial pacing, whereas impedance and atrial sensing signals were significantly higher at 3 and 6 months follow-up. CONCLUSION: These favorable initial results justify recommanding chronic LAS pacing with the active fixation atrial lead and providinge guidelines and fluoroscopic landmarks for the implantation. Insertion of the atrial active fixation lead positioned with the Locatortrade mark tool strongly supports the implantation procedure.
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Voogt et al. (2005) conducted an observational in Paroxysmal atrial fibrillation (prevention) (n=100). Low right atrial septal pacing using a new 'over the wire' lead system vs. Conventional atrial pacing was evaluated on Acute implantation and short-term success. Low right atrial septal pacing using a new 'over the wire' lead system achieved an acute implantation and short-term success rate of >90% in 100 patients without major complications.
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