The desire for physiological pacing: Are we there yet?

Area of Science:

• Cardiology
• Electrophysiology
• Medical Device Technology

Background:

• Pacing is a standard therapy for bradycardia and heart failure.
• Traditional right ventricular apical pacing can lead to abnormal depolarization and impaired left ventricular function.
• There is a need for physiological pacing systems to improve outcomes.

Purpose of the Study:

• To review the evolution of physiological pacing.
• To evaluate historical data on right ventricular pacing.
• To discuss new lead positions, focusing on His bundle pacing.

Main Methods:

• Review of existing literature on pacing lead positions.
• Analysis of historical data from right ventricular pacing studies.
• Evaluation of His bundle pacing as a physiological alternative.

Main Results:

• Right ventricular apical pacing is associated with risks like impaired systolic function and increased mortality.
• His bundle pacing closely mimics normal cardiac conduction pathways.
• Alternative lead positions are being explored to achieve more physiological pacing.

Conclusions:

• His bundle pacing represents a significant advancement towards physiological pacing.
• This approach may mitigate risks associated with conventional right ventricular pacing.
• Further research into optimal lead placement is crucial for improving pacing therapies.