Mapping Electrical Delays in Cardiac Resynchronization Therapy
Author Information
Author(s): Scharf Christoph, Krasniqi Nazmi, Hellermann Jens, Rahn Mariette, Sütsch Gabor, Brunckhorst Corinna, Duru Firat
Primary Institution: University Hospital Zurich, Zurich, Switzerland
Hypothesis
Can a coordinate system for coronary sinus mapping improve the predictability of electrical delays during cardiac resynchronization therapy?
Conclusion
Electrical delays within the coronary sinus vary during sinus rhythm but become predictable during right ventricular pacing.
Supporting Evidence
- Electrical delays in the coronary sinus were found to be inhomogeneous during sinus rhythm.
- During right ventricular pacing, delays increased significantly, indicating a predictable pattern.
- A coordinate system was proposed to help define lead positions irrespective of individual coronary sinus branch orientation.
Takeaway
Doctors used a special map to see how electricity moves in the heart during treatment, and they found a way to make it easier to predict where to place the wires.
Methodology
The study involved mapping lead positions in the coronary sinus during sinus rhythm and right ventricular pacing in 13 patients.
Limitations
The study did not assess mechanical dyssynchrony and hemodynamic responses during the implant procedure.
Participant Demographics
All 13 participants were male with a mean age of 67 years.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website