Left Bundle Pacing: Has Cardiac Pacing Changed Forever?
A hidden and deleterious side effect
Despite the great benefit of the AV synchronized pacing, the endocardial lead at the apex of the right ventricle remained causing unwanted pacing with wide QRS and complete left bundle branch block effect, with significant dyssynchrony of the left ventricular walls given rise to a second problem: the “Ventricular Pacemaker Syndrome or Wide QRS Syndrome”, whose prevention and treatment gave origin to resynchronization therapy. – . Despite being present in the entire cardiac stimulation, this dyssynchrony was neglected for a long time due to the great benefit resulting of the bradycardia correction.
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