Chronic heart failure with bradycardiac arrhythmia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Signing the informed consent of the patient and indicating the date of signing; Patients with relatively stable residential location can finish follow-up during the clinical study; Aged at least 18 years old; Patients with cardiac pacing indications; NYHA cardiac function grade II-IV; LVEF=45%.
Exclusion criteria
Exclusion criteria: QRS>120ms (except right bundle branch block); Life expectancy is less than 3 years; Patients with right ventricular mechanical valve; Heart transplant patients or patients waiting for heart transplantation; Patients with heart valve disease; Women of childbearing age who have been pregnant or are pregnant at the time of the study; Patients with severe renal insufficiency (Cre >2.5mg/dl or > 275umol/LGFR =30 ml/min/1.72m2); Patients with severe hepatic insufficiency; Patients with severe anemia; Patients have been registered other clinical studies which may affect the purpose of this study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Any one of right ventricular leads, left ventricular leads, or his bundle leads failed in implantation;The conduction block was found to occur in the descending pathway of the bundle conduction during pacemaker implantation;Pacemakers need to be removed for other reasons; or pacemaker and electrode wire systems need to be repaired;Right ventricular pacing, left ventricular pacing or his bundle pacing threshold is greater than 5 volts during follow-up;Completing 18 months follow-up;Patient death; | — |
Countries
China
Contacts
Shanghai Chest Hospital, Shanghai Jiao Tong University