NCT00450684

Cardiac Resynchronization Therapy in Congenital Heart Defects

Cardiac Resynchronization Therapy in Heart Failure Patients With Congenital Heart Defects

• Status: Completed
• Phase: Phase 2 / Phase 3
• Study type: Interventional
• Enrollment: 55 (actual)
• Sponsor: Competence Network for Congenital Heart Defects · Other Government
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

The objective of this multicentre prospective therapeutic study is to evaluate the effects of CRT on the right and left ventricular function of patients with CHD in the medium and long term. Patients who reject the randomization or cannot be paced with right ventricular pacing alone will be enrolled in group C with continuous biventricular pacing, which is the main group in this study. Optional: Immediately after implantation the patients are divided into group A and B (randomized, single blind (for the patient), cross-over design). The treatment and the completing follow-up examination will take approximately 18 months and includes seven visits - one previous to the CRT and six at certain times afterward. At selected time intervals echocardiographic 3D and Tissue Doppler Imaging to evaluate the global and regional ventricular function are performed. Subjective quality of life assessment (questionnaire) will also be performed at the defined follow-up intervals, and if applicable (optional) also objective assessment of the physical performance (VO2 max). 55 patients also including children and adults with CHD are planned to be included in the study. The main target is to provide evidence of the effectiveness of CRT with biventricular stimulation in terms of improved ventricular function (ejection fraction and QRS interval).

Conditions

• Congenital Heart Defects

Interventions

Type	Name	Description
DEVICE	Implantation and testing of CRT	Biventricular pacing for 12 weeks (CRT ON) followed by automatic rhythmicity or the original, conventional biventricular stimulation for 12 weeks (CRT OFF), then returning to biventricular pacing (CRT ON).
DEVICE	Implantation and testing of CRT	Automatic rhythmicity or original conventional biventricular stimulation for 12 weeks (CRT OFF) followed by biventricular pacing (CRT ON).

Timeline

• Start date: 2007-05-01
• Primary completion: 2012-02-01
• Completion: 2013-09-01
• First posted: 2007-03-22
• Last updated: 2014-10-10

Locations

16 sites across 2 countries: Austria, Germany