Remote magnetic navigation system provides a superior catheter stability in acquisition of His bundle electrogram

Area of Science:

• Cardiology
• Medical Devices
• Electrophysiology

Background:

• Catheter stability is crucial for successful electrophysiology (EP) procedures.
• Remote magnetic navigation systems (RMNS) are emerging tools for EP catheter manipulation.
• Prospective data comparing RMNS and manual catheter stability are limited.

Purpose of the Study:

• To prospectively compare the amplitude and stability of His-electrograms using RMNS versus conventional manual catheter placement.
• To evaluate the impact of RMNS on catheter stability in EP procedures.

Main Methods:

• A prospective cross-over study involving 14 patients.
• Continuous His-electrogram recording for 3 minutes using both RMNS and manual catheters in the same patient.
• Analysis of the first 100 beats, measuring His-electrogram amplitude and calculating the coefficient of variation.

Main Results:

• His-electrograms demonstrated greater stability and homogeneity with RMNS in 10 out of 14 patients.
• Pooled variance of RMNS recordings was significantly lower than that of manual recordings (p=0.01).

Conclusions:

• RMNS provides more stable and homogeneous His-electrogram recordings than traditional manual methods in most patients.
• RMNS indicates superior catheter stability, potentially enhancing EP procedure success.