An extremely high generator impedance in the blood pool can be observed in a patient with severe polycythemia. However, ablation can be performed safely as long as the generator impedance during contact with the myocardial tissue is within acceptable limits.
Keywords: Ebstein's anomaly; atrial flutter; congenital heart disease; generator impedance; polycythemia.
© 2024 The Author(s). Journal of Arrhythmia published by John Wiley & Sons Australia, Ltd on behalf of Japanese Heart Rhythm Society.