Longitudinal dissociation and transition in thickness of the His‐Purkinje system cause various QRS waveforms of surface ECG under His bundle pacing: A simulation study based on clinical observations

His bundle pacing (HBP) is a feasible and reliable alternative to conventional right ventricular pacing (RVP), but associated ECG (electrocardiogram) changes have not been well‐studied. This study aimed to determine the mechanisms underlying ECG changes associated with HBP using patient‐specific multiscale heart simulations.

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