Sick sinus syndrome
Conditions
Interventions
Minimal ventricular pacing group:According to the baseline PR interval of patients, the paced and sensed AV interval are set, and the special function of the pacemaker is turned on. The ventricular pa
Atrioventricular sequential pacing group:Fixed paced and sensed AV intervals are set to ensure atrioventricular sequential pacing. The ventricular pacing burden is more than 90%
Sponsors
Xuzhou Central Hospital
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Patients older than 18 years, 2. According to the ACC / AHA dual chamber pacemaker implantation guidelines, the patients are class I or class IIa indications; 3. Patients with i-degree atrioventricular block (PR >= 200ms) indicated by basic ECG; 4. Patients with normal cardiac structure were examined by ultrasonography; 5. Patients with ejection fraction > 50%.
Exclusion criteria
Exclusion criteria: 1. Patients with atrioventricular block and highly pacemaker-dependent; 2. Patients with paroxysmal or persistent atrial fibrillation; 3. Patients with structural heart disease; 4. Patients expecting life span less than one year; 5. Patients with cardiomyopathy, previous myocardial infarction, congestive heart failure, severe arrhythmia.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| atrial high frequency episode; | — |
Secondary
| Measure | Time frame |
|---|---|
| vena contracta width;mitral regurgitation fraction;The Duke Activity Status Index;International Physical Activity Questionnaire; | — |
Countries
China
Contacts
Public ContactHan Bing
Xuzhou Central Hospital
Outcome results
None listed