Status after pacemaker implantation
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patient must be more than 18 years old; 2. Patients with the indication of permanent pacemaker implantation in our hospital, and with the diagnosis of sick sinus syndrome (SSS) with normal QRS duration (< 120 ms) at baseline or atrioventricular block (AVB) not completely dependent on pacing; 3. Patients implanted with dual-chamber pacemaker and with clear ultrasonic images for ventricular synchrony analysis; 4. Patients who have been successfully performed with left bundle branch pacing or right ventricular septum pacing. The criteria for successful implantation are shown in section 4.2 of the study protocol; 5. Patient is informed and has signed informed consent. Patient is willing to attend an outpatient follow-up.
Exclusion criteria
Exclusion criteria: 1. Heart failure due to any etiology; 2. Structural heart disease, including valvular heart disease, congenital heart disease, cardiomyopathy, etc; 3. Moderate to severe pulmonary hypertension caused by any disease; 4. Atrial fibrillation or frequent premature ventricular / atrial contraction bigeminy or trigeminy; 5. Active infection; 6. Patient with mentally ill; 7. Participation in another clinical trial, either within the past 2 months or still ongoing. 8. Pregnant women, breast-feeding, or of child-bearing potential; 9. Patients with poor compliance who cannot be followed up according to the study protocol by researcher's judgment; 10. Any other situation that the researcher considers the patient is unsuitable for participation in the trial.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| peak strain dispersion;longitudinal systolic peak strain; | — |
Secondary
| Measure | Time frame |
|---|---|
| Pulmonary pressure;Degree of mitral valve regurgitation;Degree of tricuspid valve regurgitation;NYHA classification;NT-proBNP level; | — |
Countries
China
Contacts
Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University