Patients with successful left bundle branch pacing in our center were included in this study from April 2018 to December 2019. Baseline data was collected, and pacing parameters, ECG and echocardiographic results were analyzed during 3 years follow-up. According to whether or not a potential was recorded and the specific potential characteristics at implantation, the patients were divided into 3 groups: left bundle branch potential group; Purkinje potential group; and no-potential group. During the 3 years follow-up, the investigators collected the ECG、UCG and pacemaker parameters to analyze.
A total of 136 patients with a high percentage of ventricular pacing and successful left bundle branch pacing were included in this study from April 2018 to December 2019. Baseline data was collected, and pacing parameters, ECG and echocardiographic results were analyzed during 3 years follow-up. According to whether or not a potential was recorded and the specific potential characteristics at implantation, the patients were divided into 3 groups: left bundle branch potential group (L group) 31.6%; Purkinje potential group (P group) 10.3%; and no-potential group (N group) 58.1%. During the 3 years follow-up, the investigators collected the ECG、UCG and pacemaker parameters to analyze.
Study Type
OBSERVATIONAL
Enrollment
136
model 3830, 69cm, Medtronic, Inc., Minneapolis, MN, USA
Linyi People's Hospital
Linyi, Shandong, China
Change from Baseline in left atrium diameter at 3 years
Echocardiography is measured by a professional using an ultrasound machine, record the following results: left atrium diameter (ms)
Time frame: Baseline and 3 years
Change from Baseline in left ventricular end diastolic diameter at 3 years
Left ventricular end diastolic diameter (ms)
Time frame: Baseline and 3 years
Change from Baseline in left ventricular ejection fraction at 3 years
Left ventricular ejection fraction (%)
Time frame: Baseline and 3 years
Change from Baseline in pulmonary artery systolic pressure at 3 years
Pulmonary artery systolic pressure (mmHg)
Time frame: Baseline and 3 years
Change from Baseline in threshold at 3 years
Threshold was measured with a pace-sensing analyser: threshold (V) at 0.5ms
Time frame: Baseline and 3 years
Change from Baseline in impedance at 3 years
Impedance was measured with a pace-sensing analyser: impedance(Ω)
Time frame: Baseline and 3 years
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