Physiological Pacing for AV Block to Prevent Pacemaker-induced Cardiomyopathy

Inclusion Criteria: * The patient must be ≥ 18 years of age. * The patient must indicate their acceptance to participate in the study by signing an informed consent document. * Patients with EF\> 50% and indication for pacemaker implantation due to atrial-ventricular block according to current clinical guidelines. Exclusion Criteria: * Inability to understand and sign the informed consent. * Patients with severe comorbidities and life expectancy \<1 year. * Patients with severe cognitive impairment or other comorbidities resulting in dependence for basic activities of daily life. * Patients who cannot come to our center to carry out the follow-up of the study.