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. 2020 Apr 27;1(1):68-75.
doi: 10.1016/j.hroo.2020.03.001. eCollection 2020 Apr.

His-bundle pacing is the best approach to physiological pacing

Affiliations

His-bundle pacing is the best approach to physiological pacing

Gaurav A Upadhyay et al. Heart Rhythm O2. .
No abstract available

Keywords: Biventricular pacing; Cardiac resynchronization therapy; His-bundle pacing; Left bundle branch block; Pacemaker; Right bundle branch block.

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Figures

None
Graphical abstract
Figure 1
Figure 1
Complete correction of wide QRS (top: left bundle branch block) with His-bundle pacing (HBP), restoring physiological conduction through intrinsic activation of the His–Purkinje system (bottom: corrected HBP).
Figure 2
Figure 2
Subtle differences in surface QRS morphology with LCS and LVS. Both exhibit an isoelectric segment after the stimulus; however, intracardiac recordings show evidence of septal capture. High-density mapping of the septum shows presystolic recruitment of Purkinje, which proves LCS, whereas passive Purkinje is still activated at QRS onset during LVS. No data suggest whether these responses are equivalent. LCS = left conduction system; LVAT = left ventricular activation time; LVS = left ventricular (LV) septum.
Figure 3
Figure 3
Evidence of intraseptal substrate that impedes the ability to fix the lead deeper and correct wide QRS. Unipolar electrogram shows significant fractionated local recording within the septum. Without including the S-QRS, the left ventricular activation time (LVAT) is already 84 ms from intrinsicoid deflection, signifying inability to achieve cardiac resynchronization therapy by left bundle branch area pacing.

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