Atrial fixation leads--a visual aid confirming actual fixation

Area of Science:

• Cardiology
• Medical Devices
• Electrophysiology

Background:

• Atrial lead implantation requires secure fixation for optimal function.
• Standard methods like fluoroscopy can sometimes make visualizing lead tip fixation difficult.
• Active fixation mechanisms are crucial for stable lead placement.

Purpose of the Study:

• To describe a novel method for confirming atrial lead fixation.
• To evaluate the utility of observing stylet motion synchronized with atrial systole.
• To assess the positioning of the Accufix model #330-801 atrial lead.

Main Methods:

• Observation of fixation stylet motion during atrial systole.
• Utilizing synchronized clockwise/counterclockwise movements as an indicator of fixation.
• Assessing lead placement in the right atrial appendage.
• Confirmation in a cohort of nine patients.

Main Results:

• Organized stylet motion in synchrony with atrial systole indicates adequate lead fixation.
• This observation method is particularly useful when screw visualization is poor under fluoroscopy.
• The Accufix model #330-801 atrial lead was confirmed to be adequately positioned in the right atrial appendage in all observed patients.

Conclusions:

• Observing synchronized stylet motion is a valuable technique for confirming atrial lead fixation.
• This method enhances the reliability of lead placement, especially in challenging fluoroscopic scenarios.
• Adequate positioning of the Accufix atrial lead in the right atrial appendage can be reliably confirmed using this observation.