About this trial
Multicenter randomized controlled trial which will include patients with left ventricular ejection fraction \>50% requiring a first implant of a cardiac pacemaker with expected high pacing percentages.
Patients will be randomized 1:1 to right ventricular apical pacing vs left septal or deep septal pacing. The primary endpoint will be pacing-induced cardiomyopathy during the first year of follow-up.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
First implant of a single-chamber or dual chamber pacemaker due to persistent bradycardia associated with high degree atrio-ventricular (AV) block (complete AV block or second degree type II AV block), with second-degree type I AV block (symptomatic or associated with intra-hisian or infra-hisian block), or with atrial fibrillation with symptomatic slow ventricular rate (<45lpm).
LVEF>50% at echocardiography performed maximum 7 days before pacemaker implant.
Informed consent signature.
Disqualifiers
Life expectancy <12 months
Severe cardiac valvular abnormality requiring intervention
Unstable Angina, Acute myocardial infarction, coronary revascularization, valvular surgery or valvular percutaneous intervention in the 90 days prior to pacemaker implant.
Inclusion in another trial which may influence the results of this study.
Trial design
Parallel
Treatments tested in this trial
Pacemaker implant
DeviceAll patients in the study will have a clear indication for a permanent pacemaker. The type of device (single or dual chamber) will be chosen as per clinical practice. The only difference between the two groups of the study will be the position of the ventricular lead.
Treatment groups
Trial outcomes
Primary outcomes
Pacing-induced cardiomyopathy
Decrease in the left ventricular ejection fraction (LVEF) by \>10% as compared to the LVEF before pacemaker implant and final LVEF\<45%.
Secondary outcomes
LVEF during follow-up
To compare the mean or median (depending on distribution) LVEF before and one year after pacemaker implant in the two groups.
Mitral and tricuspid regurgitation
To compare the degree of mitral and tricuspid regurgitation before and one year after pacemaker implant in the two groups.
New York Heart Association (NYHA) class
To compare the NYHA class one year after pacemaker implant in the two groups.
Brain Natriuretic Peptide levels
To compare the N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels one year after pacemaker implant in the two groups.
Other outcomes
Complications
Complications related to the ventricular lead
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
Institut d'Investigació Biomèdica de Bellvitge
Lead sponsor
Fundació La Marató de TV3
Collaborator
Hospital Universitari de Bellvitge
Collaborator