NCT05920226

Myocardial Fibrosis in Patients With Permanent Pacemakers

• Status: Active Not Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 300 (estimated)
• Sponsor: Ryazan State Medical University · Academic / Other
• Sex: All
• Age: 60 Years – 85 Years
• Healthy volunteers: Accepted

Summary

Patients with cardiac pathology and arrhythmias including those who have indications for pacemakers implantation will be included in the study. We will determine the influence of pacemaker implantation with the localization of the ventricular electrode in the top of the right ventricle or the middle third of the right ventricle according to echocardiographic and electrocardiographic parameters, congestive heart failure progression, patients' quality of life and follow-up therapy of patients with identified myocardial fibrosis with existing pacemaker. Study of changes in echocardiography, electrocardiography, myocardial fibrosis markers, the quality of life of patients will allow to choose the most optimal localization of the ventricular electrode during implantation of the permanent pacemakers system in order to improve the quality of life of the patients.

Detailed description

Anticipated design of the study: an open, prospective, study, with parallel groups of patients according to ICH GCP ((International Conference on Harmonisation - Good Clinical Practice) criteria. The study will involve 300 patients with cardiac pathology and arrhythmias including those who have indications for pacemakers implantation, who will be allocated into 2 groups: group 1 - patients who require a permanent pacemaker placement; group 2 - patients who do not require a permanent pacemaker placement. Patients involved in the study will undergo peripheral venous blood sampling to determine the level of myocardial fibrosis markers (Halitin-3, ST2), electrocardiography (assessment of the type of bradyarrhythmia, assessment of the presence/absence and type of intraventricular conductivity disorder, estimation of the width of the QRS complex, direction of the electric axis of the heart), echocardiography (evaluation of ejection fraction, heart chamber size, mitral and tricuspidal manifestation, interventricular delay), contrast-enhanced cardiac magnetic resonance imaging (MRI), quality of life assessment using the Aquarel questionnaire. All procedures will be repeated at time points as per protocol. Specific information for Group A patients: there will be different variants of localization of the right ventricular lead (top of the right ventricle, the upper third of the ventricular septum, the middle third of the ventricular septum, the lower third of the ventricular septum, front wall of the right ventricle, lower wall of the right ventricle, parahisial region, His bundle). The analysis of the subgroups will be carried out according to the following criteria: electrode localization, main indication for pacemakers implantation, pacemakers model, type of initial intraventricular conductivity disorder.

Conditions

• Fibrosis
• Atrial Fibrillation
• Atrial Flutter

Interventions

Type	Name	Description
DEVICE	pacemakers implantation and assessment of cardiac function and cardiac fibrosis	150 patients will be implanted with pacemakers. In addition to the echocardiography, contrast-enhanced cardiac MRI and peripheral venous blood sampling for myocardial fibrosis markers, the tests described above will be repeated at 1 (V1), 12 (V2), 24 (V3) months after inclusion. Echocardiography and peripheral venous blood sampling for myocardial fibrosis markers detection will be repeated to all patients before pacemakers implantation and after 6,12 and 24 months of observation period. Contrast-enhanced cardiac magnetic resonance imaging (MRI) will be performed before pacemaker implantation and 6 months after surgery. In addition, pacemakers programming data will be evaluated after 1, 12, 24 months after inclusion in the study (atrioventricular delay, percentage of ventricular stimulation, episodes of high atrial frequency, fibrillation/atrial flutter, ventricular tachycardia).
DIAGNOSTIC_TEST	assessment of cardiac function and cardiac fibrosis	The patients who do not require a pacemaker placement will undergo diagnostic testing such as echocardiography, contrast-enhanced cardiac MRI and peripheral venous blood sampling for myocardial fibrosis markers.

Timeline

• Start date: 2023-07-01
• Primary completion: 2027-07-01
• Completion: 2028-07-01
• First posted: 2023-06-27
• Last updated: 2024-04-11

Locations

1 site across 1 country: Russia