Trastornos de la conducción auriculoventricular tras el implante valvular aórtico transcatéter

Transcatheter aortic valve implantation has revolutionized the field of percutaneous coronary intervention, some excellent results have been achieved, but complications have not entirely been eliminated. Atrioventricular conduction disturbances, mainly left bundle branch block, are the most prevalent complications, largely due to the proximity of the aortic valve to the atrioventricular node and the bundle of His. The type of percutaneous valve prosthesis has an effect on the incidence of conduction disturbances and the consequent need for a pacemaker. Although pacemaker implantation is associated with worsening ventricular function during follow-up, it does not appear to influence mortality. The position of the prosthesis is one of the main factors associated with the need for a pacemaker. New prosthesis designs provide greater control over implantation and device positioning, but without completely excluding the risk of a complete atrioventricular block. Better understanding of this complication would reduce the degree of uncertainty associated with paroxysmal atrioventricular block and its clinical sequelae.