Correction of RBBB by His Bundle Pacing (A) Surface 12-lead electrocardiogram (ECG) of a patient with chronic right bundle branch block (RBBB) and a QRS.

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Presentation transcript:

Correction of RBBB by His Bundle Pacing (A) Surface 12-lead electrocardiogram (ECG) of a patient with chronic right bundle branch block (RBBB) and a QRS duration of 150 ms at a sweep speed of 100 mm/s. With permanent selective His bundle pacing (S-HBP), QRS duration has completely normalized with a duration of 90 ms. (B) Surface 12-lead ECG of a patient with chronic RBBB at a sweep speed of 50 mm/s. With S-HBP, QRS is partially corrected but still shows terminal R-wave in V1. With nonselective His bundle pacing (NS-HBP) at a slightly higher output, the terminal R-wave in V1 is resolved with fusion (basal septal right ventricular [RV] capture in addition to His capture). (C) Surface 12-lead ECG of a patient with chronic RBBB and a QRS duration of 150 ms is shown at a sweep speed of 100 mm/s. Pacing from His and RV apex (RVA) with a His-RV delay of 40 ms completely normalized the RBBB with a QRS duration of 90 ms with fusion from the RV apex. H = His. Kenneth A. Ellenbogen, and Pugazhendhi Vijayaraman JACEP 2015;1:592-595 American College of Cardiology Foundation