Clinical Research Directory

Inclusion Criteria: 1. Patients diagnosed with atrioventricular conduction block, meeting the indications for dual-chamber leadless pacemakers as per the "Chinese Expert Consensus on Clinical Application of Leadless Pacemakers (2022)". 2. Age ≥18 years. 3. Expected lifespan ≥1 year. 4. Consent to sign an informed consent form and cooperate in the collection of baseline data and subsequent follow-ups Exclusion Criteria: 1. Patients anticipated to have a high ventricular pacing proportion (\>40%) and with left ventricular ejection fraction less than 50%. 2. Patients with persistent atrial fibrillation and a high expected ventricular pacing proportion. 3. Post-tricuspid valve mechanical valve replacement surgery. 4. Patients with inferior vena cava pathway anomalies, precluding passage of the leadless pacemaker's delivery sheath. 5. Patients with an expected lifespan of less than 1 year. 6 Patients who are pregnant, planning pregnancy, or undergoing cardiac transplantation.