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Effects of Left Ventricular Pacing Optimilization on Cardiac Perfusion, Contractile Force, and Clinical Performance in Patients With Ventricular Dysfunction and Heart Failure

Effects of Left Ventricular Pacing Optimilization on Cardiac Perfusion, Contractile Force, and Clinical Performance in Patients With Ventricular Dysfunction and Heart Failure

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00551681
Acronym
CONTRACT
Enrollment
52
Registered
2007-10-31
Start date
2007-11-30
Completion date
2015-08-31
Last updated
2016-04-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Heart Failure, Left Ventricular Dysfunction

Keywords

cardiac resynchronisation therapy, epicardial lead, coronary sinus

Brief summary

To compare a surgical approach of LV lead placement for BIV pacing with the conventional transvenous approach by assessment of differences on the effects on cardiac perfusion and relate this to the clinical cardiac function.

Interventions

DEVICEbiventricular pacemaker with epicardial left ventricular lead

epicardial left ventricular lead placement

DEVICEtransvenous left ventricular lead placement

implantation of biventricular pacemaker with transvenous left ventricular lead placement

Sponsors

R&D Cardiologie
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Heart failure NYHA III or IV * QRS duration \>120msec or, when paced \> 200msec on 12-lead ECG * LBBB on ecg * LV ejection fraction 35% or less * LV dyssynchony on echocardiography

Exclusion criteria

* Severe (drug refractory) heart failure with short (\<6 months) life expectancy. * Permanent or persistent atrial fibrillation * Other indications for cardiac surgery within 6 months * Life expectancy less than one year due to other conditions * Major contra-indication for general anaesthesia * Participation in another study * Pregnancy or the desire to become pregnant during the follow up of the study.

Design outcomes

Primary

MeasureTime frame
Degree of change in cardiac perfusion following epicardial LV lead placement, compared to transvenous LV lead placement6 months

Secondary

MeasureTime frame
Resynchronization of the LV, measured with TDI, 2D- and 3D-echocardiography, in patients with epicardial LV lead placement, compared to transvenous LV lead placement6 months

Countries

Netherlands

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026