Heart Failure
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: The study population consists of patients referred for CRT implantation, who have a class I indication for CRT according to current international guidelines. The patients will be recruited from the out-patient Pacemaker/ICD clinic and from the cardiology ward. ;Inclusion criteria: * Chronic heart failure with NYHA functional class II-IV * Left ventricular ejection fraction (LVEF) 120 ms * In sinus rhythm
Exclusion criteria
Exclusion criteria: * Atrial fibrillation * >=4 premature ventricular complexes on standard 12-lead ECG * Age 80 years * Incapable of giving informed consent * Moderate to severe aortic valve stenosis
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main study endpoints * Agreement between the increase in LVdP/dtmax obtained at the optimal AV- and VV-interval as predicted by D-VCG and the largest increase in LVdP/dtmax during hemodynamic evaluation of AV- and VV-intervals. * Agreement between the increase in LVdP/dtmax obtained at the optimal LV lead position as predicted by VCG and LVLED and the largest increase in LVdP/dtmax during hemodynamic evaluation of potential LV lead positions. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary study endpoint: * Agreement between QRS vector area, -angle and -amplitude on VCG with that on D-VCG. | — |
Countries
Netherlands